./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8ab0bd5 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-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.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 55711f117aca8cc6da45707674eed41f8615ce4fb09ace088988b9afc0dc0851 --- Real Ultimate output --- This is Ultimate 0.3.0-?-f8ab0bd-m [2025-03-13 21:34:33,130 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-13 21:34:33,184 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-13 21:34:33,189 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-13 21:34:33,189 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-13 21:34:33,213 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-13 21:34:33,213 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-13 21:34:33,213 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-13 21:34:33,214 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-13 21:34:33,214 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-13 21:34:33,215 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-13 21:34:33,215 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-13 21:34:33,215 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-13 21:34:33,215 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-13 21:34:33,215 INFO L153 SettingsManager]: * Use SBE=true [2025-03-13 21:34:33,216 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-13 21:34:33,216 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-13 21:34:33,216 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-13 21:34:33,216 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-13 21:34:33,216 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-13 21:34:33,216 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-13 21:34:33,216 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-13 21:34:33,216 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-13 21:34:33,216 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-13 21:34:33,217 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-13 21:34:33,217 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-13 21:34:33,217 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-13 21:34:33,217 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-13 21:34:33,217 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-13 21:34:33,217 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-13 21:34:33,217 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-13 21:34:33,217 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-13 21:34:33,217 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-13 21:34:33,218 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-13 21:34:33,218 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-13 21:34:33,218 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-13 21:34:33,218 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-13 21:34:33,218 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-13 21:34:33,218 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-13 21:34:33,218 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-13 21:34:33,218 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-13 21:34:33,218 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-13 21:34:33,219 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-13 21:34:33,219 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 -> 55711f117aca8cc6da45707674eed41f8615ce4fb09ace088988b9afc0dc0851 [2025-03-13 21:34:33,445 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-13 21:34:33,454 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-13 21:34:33,457 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-13 21:34:33,458 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-13 21:34:33,458 INFO L274 PluginConnector]: CDTParser initialized [2025-03-13 21:34:33,459 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2025-03-13 21:34:34,625 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/571f7375f/1008917590bb44a188163b5173dcd739/FLAGea7d8cd6e [2025-03-13 21:34:34,918 INFO L384 CDTParser]: Found 1 translation units. [2025-03-13 21:34:34,924 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2025-03-13 21:34:34,939 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/571f7375f/1008917590bb44a188163b5173dcd739/FLAGea7d8cd6e [2025-03-13 21:34:34,956 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/571f7375f/1008917590bb44a188163b5173dcd739 [2025-03-13 21:34:34,959 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-13 21:34:34,960 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-13 21:34:34,962 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-13 21:34:34,962 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-13 21:34:34,966 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-13 21:34:34,967 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.03 09:34:34" (1/1) ... [2025-03-13 21:34:34,967 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46904ae9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:34:34, skipping insertion in model container [2025-03-13 21:34:34,968 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.03 09:34:34" (1/1) ... [2025-03-13 21:34:34,995 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-13 21:34:35,112 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-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2025-03-13 21:34:35,218 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-13 21:34:35,225 INFO L200 MainTranslator]: Completed pre-run [2025-03-13 21:34:35,234 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-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2025-03-13 21:34:35,272 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-13 21:34:35,300 INFO L204 MainTranslator]: Completed translation [2025-03-13 21:34:35,301 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:34:35 WrapperNode [2025-03-13 21:34:35,302 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-13 21:34:35,303 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-13 21:34:35,303 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-13 21:34:35,303 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-13 21:34:35,309 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:34:35" (1/1) ... [2025-03-13 21:34:35,318 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:34:35" (1/1) ... [2025-03-13 21:34:35,334 INFO L138 Inliner]: procedures = 176, calls = 46, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 64 [2025-03-13 21:34:35,334 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-13 21:34:35,335 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-13 21:34:35,335 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-13 21:34:35,335 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-13 21:34:35,342 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:34:35" (1/1) ... [2025-03-13 21:34:35,343 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:34:35" (1/1) ... [2025-03-13 21:34:35,351 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:34:35" (1/1) ... [2025-03-13 21:34:35,367 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]. [2025-03-13 21:34:35,367 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:34:35" (1/1) ... [2025-03-13 21:34:35,367 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:34:35" (1/1) ... [2025-03-13 21:34:35,371 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:34:35" (1/1) ... [2025-03-13 21:34:35,371 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:34:35" (1/1) ... [2025-03-13 21:34:35,372 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:34:35" (1/1) ... [2025-03-13 21:34:35,373 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:34:35" (1/1) ... [2025-03-13 21:34:35,374 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-13 21:34:35,375 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-13 21:34:35,375 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-13 21:34:35,375 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-13 21:34:35,375 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:34:35" (1/1) ... [2025-03-13 21:34:35,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-13 21:34:35,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-13 21:34:35,400 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) [2025-03-13 21:34:35,402 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 [2025-03-13 21:34:35,417 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-13 21:34:35,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-13 21:34:35,418 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-03-13 21:34:35,418 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-03-13 21:34:35,418 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-03-13 21:34:35,418 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-03-13 21:34:35,418 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-03-13 21:34:35,418 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-03-13 21:34:35,418 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2025-03-13 21:34:35,418 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2025-03-13 21:34:35,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-13 21:34:35,418 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-13 21:34:35,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-13 21:34:35,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-13 21:34:35,419 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-13 21:34:35,527 INFO L256 CfgBuilder]: Building ICFG [2025-03-13 21:34:35,528 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-13 21:34:35,679 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-13 21:34:35,680 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-13 21:34:35,680 INFO L318 CfgBuilder]: Performing block encoding [2025-03-13 21:34:35,767 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-13 21:34:35,770 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.03 09:34:35 BoogieIcfgContainer [2025-03-13 21:34:35,770 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-13 21:34:35,772 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-13 21:34:35,773 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-13 21:34:35,776 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-13 21:34:35,777 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.03 09:34:34" (1/3) ... [2025-03-13 21:34:35,777 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5357579c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.03 09:34:35, skipping insertion in model container [2025-03-13 21:34:35,777 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:34:35" (2/3) ... [2025-03-13 21:34:35,778 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5357579c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.03 09:34:35, skipping insertion in model container [2025-03-13 21:34:35,778 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.03 09:34:35" (3/3) ... [2025-03-13 21:34:35,779 INFO L128 eAbstractionObserver]: Analyzing ICFG safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2025-03-13 21:34:35,790 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-13 21:34:35,791 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i that has 5 procedures, 45 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-03-13 21:34:35,791 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-13 21:34:35,836 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-13 21:34:35,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 45 transitions, 106 flow [2025-03-13 21:34:35,887 INFO L124 PetriNetUnfolderBase]: 1/41 cut-off events. [2025-03-13 21:34:35,888 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-13 21:34:35,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 41 events. 1/41 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 76 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2025-03-13 21:34:35,890 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 45 transitions, 106 flow [2025-03-13 21:34:35,892 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 38 transitions, 88 flow [2025-03-13 21:34:35,898 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-13 21:34:35,905 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;@52f35580, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-13 21:34:35,905 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-03-13 21:34:35,915 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-13 21:34:35,915 INFO L124 PetriNetUnfolderBase]: 0/37 cut-off events. [2025-03-13 21:34:35,915 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-13 21:34:35,915 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:34:35,916 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:34:35,916 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 2 more)] === [2025-03-13 21:34:35,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:34:35,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1673529675, now seen corresponding path program 1 times [2025-03-13 21:34:35,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:34:35,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123212184] [2025-03-13 21:34:35,926 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:34:35,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:34:35,996 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-13 21:34:36,024 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-13 21:34:36,024 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:34:36,024 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:34:36,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:34:36,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:34:36,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123212184] [2025-03-13 21:34:36,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123212184] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:34:36,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:34:36,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-13 21:34:36,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499172612] [2025-03-13 21:34:36,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:34:36,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-13 21:34:36,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:34:36,436 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-13 21:34:36,437 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-13 21:34:36,439 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2025-03-13 21:34:36,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 38 transitions, 88 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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) [2025-03-13 21:34:36,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:34:36,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2025-03-13 21:34:36,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:34:38,059 INFO L124 PetriNetUnfolderBase]: 19981/28439 cut-off events. [2025-03-13 21:34:38,059 INFO L125 PetriNetUnfolderBase]: For 194/194 co-relation queries the response was YES. [2025-03-13 21:34:38,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55773 conditions, 28439 events. 19981/28439 cut-off events. For 194/194 co-relation queries the response was YES. Maximal size of possible extension queue 1042. Compared 177851 event pairs, 2463 based on Foata normal form. 900/29320 useless extension candidates. Maximal degree in co-relation 55761. Up to 15601 conditions per place. [2025-03-13 21:34:38,235 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 65 selfloop transitions, 6 changer transitions 1/78 dead transitions. [2025-03-13 21:34:38,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 78 transitions, 321 flow [2025-03-13 21:34:38,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-13 21:34:38,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-13 21:34:38,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 118 transitions. [2025-03-13 21:34:38,247 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6555555555555556 [2025-03-13 21:34:38,248 INFO L175 Difference]: Start difference. First operand has 51 places, 38 transitions, 88 flow. Second operand 4 states and 118 transitions. [2025-03-13 21:34:38,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 78 transitions, 321 flow [2025-03-13 21:34:38,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 78 transitions, 314 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-13 21:34:38,258 INFO L231 Difference]: Finished difference. Result has 52 places, 42 transitions, 126 flow [2025-03-13 21:34:38,259 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=126, PETRI_PLACES=52, PETRI_TRANSITIONS=42} [2025-03-13 21:34:38,263 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 1 predicate places. [2025-03-13 21:34:38,263 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 42 transitions, 126 flow [2025-03-13 21:34:38,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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) [2025-03-13 21:34:38,264 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:34:38,264 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] [2025-03-13 21:34:38,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-13 21:34:38,265 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 2 more)] === [2025-03-13 21:34:38,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:34:38,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1047038305, now seen corresponding path program 1 times [2025-03-13 21:34:38,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:34:38,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763741491] [2025-03-13 21:34:38,266 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:34:38,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:34:38,279 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-13 21:34:38,293 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-13 21:34:38,295 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:34:38,295 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:34:38,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:34:38,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:34:38,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763741491] [2025-03-13 21:34:38,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763741491] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:34:38,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:34:38,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-13 21:34:38,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295382288] [2025-03-13 21:34:38,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:34:38,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-13 21:34:38,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:34:38,468 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-13 21:34:38,469 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-13 21:34:38,469 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2025-03-13 21:34:38,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 42 transitions, 126 flow. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 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) [2025-03-13 21:34:38,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:34:38,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2025-03-13 21:34:38,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:34:39,632 INFO L124 PetriNetUnfolderBase]: 13861/19823 cut-off events. [2025-03-13 21:34:39,633 INFO L125 PetriNetUnfolderBase]: For 4064/4064 co-relation queries the response was YES. [2025-03-13 21:34:39,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45025 conditions, 19823 events. 13861/19823 cut-off events. For 4064/4064 co-relation queries the response was YES. Maximal size of possible extension queue 636. Compared 116935 event pairs, 1337 based on Foata normal form. 756/20560 useless extension candidates. Maximal degree in co-relation 45013. Up to 8041 conditions per place. [2025-03-13 21:34:39,772 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 84 selfloop transitions, 10 changer transitions 1/101 dead transitions. [2025-03-13 21:34:39,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 101 transitions, 463 flow [2025-03-13 21:34:39,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-13 21:34:39,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-13 21:34:39,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 152 transitions. [2025-03-13 21:34:39,775 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6755555555555556 [2025-03-13 21:34:39,775 INFO L175 Difference]: Start difference. First operand has 52 places, 42 transitions, 126 flow. Second operand 5 states and 152 transitions. [2025-03-13 21:34:39,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 101 transitions, 463 flow [2025-03-13 21:34:39,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 101 transitions, 452 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-03-13 21:34:39,786 INFO L231 Difference]: Finished difference. Result has 56 places, 46 transitions, 178 flow [2025-03-13 21:34:39,787 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=178, PETRI_PLACES=56, PETRI_TRANSITIONS=46} [2025-03-13 21:34:39,787 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 5 predicate places. [2025-03-13 21:34:39,787 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 46 transitions, 178 flow [2025-03-13 21:34:39,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 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) [2025-03-13 21:34:39,787 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:34:39,788 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:34:39,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-13 21:34:39,788 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 2 more)] === [2025-03-13 21:34:39,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:34:39,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1643699465, now seen corresponding path program 1 times [2025-03-13 21:34:39,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:34:39,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087990171] [2025-03-13 21:34:39,791 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:34:39,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:34:39,802 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-13 21:34:39,814 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-13 21:34:39,815 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:34:39,817 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:34:39,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:34:39,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:34:39,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087990171] [2025-03-13 21:34:39,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087990171] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:34:39,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:34:39,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-13 21:34:39,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060235808] [2025-03-13 21:34:39,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:34:39,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-13 21:34:39,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:34:39,984 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-13 21:34:39,984 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-03-13 21:34:39,985 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2025-03-13 21:34:39,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 46 transitions, 178 flow. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 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) [2025-03-13 21:34:39,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:34:39,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2025-03-13 21:34:39,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:34:40,657 INFO L124 PetriNetUnfolderBase]: 8597/12179 cut-off events. [2025-03-13 21:34:40,657 INFO L125 PetriNetUnfolderBase]: For 7774/7774 co-relation queries the response was YES. [2025-03-13 21:34:40,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30639 conditions, 12179 events. 8597/12179 cut-off events. For 7774/7774 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 64365 event pairs, 1091 based on Foata normal form. 420/12580 useless extension candidates. Maximal degree in co-relation 30625. Up to 3644 conditions per place. [2025-03-13 21:34:40,716 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 101 selfloop transitions, 14 changer transitions 1/122 dead transitions. [2025-03-13 21:34:40,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 122 transitions, 610 flow [2025-03-13 21:34:40,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-13 21:34:40,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-13 21:34:40,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 184 transitions. [2025-03-13 21:34:40,721 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6814814814814815 [2025-03-13 21:34:40,721 INFO L175 Difference]: Start difference. First operand has 56 places, 46 transitions, 178 flow. Second operand 6 states and 184 transitions. [2025-03-13 21:34:40,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 122 transitions, 610 flow [2025-03-13 21:34:40,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 122 transitions, 580 flow, removed 5 selfloop flow, removed 4 redundant places. [2025-03-13 21:34:40,778 INFO L231 Difference]: Finished difference. Result has 59 places, 50 transitions, 228 flow [2025-03-13 21:34:40,779 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=228, PETRI_PLACES=59, PETRI_TRANSITIONS=50} [2025-03-13 21:34:40,779 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 8 predicate places. [2025-03-13 21:34:40,779 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 50 transitions, 228 flow [2025-03-13 21:34:40,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 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) [2025-03-13 21:34:40,780 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:34:40,780 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] [2025-03-13 21:34:40,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-13 21:34:40,780 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-13 21:34:40,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:34:40,780 INFO L85 PathProgramCache]: Analyzing trace with hash -2042133261, now seen corresponding path program 1 times [2025-03-13 21:34:40,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:34:40,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800465051] [2025-03-13 21:34:40,781 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:34:40,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:34:40,787 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-03-13 21:34:40,793 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-03-13 21:34:40,793 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:34:40,793 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:34:40,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:34:40,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:34:40,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800465051] [2025-03-13 21:34:40,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800465051] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:34:40,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:34:40,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-13 21:34:40,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134748552] [2025-03-13 21:34:40,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:34:40,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-13 21:34:40,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:34:40,923 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-13 21:34:40,923 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-03-13 21:34:40,923 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2025-03-13 21:34:40,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 50 transitions, 228 flow. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 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) [2025-03-13 21:34:40,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:34:40,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2025-03-13 21:34:40,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:34:41,351 INFO L124 PetriNetUnfolderBase]: 6433/8939 cut-off events. [2025-03-13 21:34:41,352 INFO L125 PetriNetUnfolderBase]: For 7834/7834 co-relation queries the response was YES. [2025-03-13 21:34:41,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23640 conditions, 8939 events. 6433/8939 cut-off events. For 7834/7834 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 44527 event pairs, 977 based on Foata normal form. 128/9048 useless extension candidates. Maximal degree in co-relation 23625. Up to 3076 conditions per place. [2025-03-13 21:34:41,393 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 88 selfloop transitions, 18 changer transitions 1/113 dead transitions. [2025-03-13 21:34:41,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 113 transitions, 584 flow [2025-03-13 21:34:41,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-13 21:34:41,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-13 21:34:41,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 186 transitions. [2025-03-13 21:34:41,395 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5904761904761905 [2025-03-13 21:34:41,395 INFO L175 Difference]: Start difference. First operand has 59 places, 50 transitions, 228 flow. Second operand 7 states and 186 transitions. [2025-03-13 21:34:41,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 113 transitions, 584 flow [2025-03-13 21:34:41,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 113 transitions, 538 flow, removed 9 selfloop flow, removed 5 redundant places. [2025-03-13 21:34:41,476 INFO L231 Difference]: Finished difference. Result has 62 places, 50 transitions, 238 flow [2025-03-13 21:34:41,477 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=238, PETRI_PLACES=62, PETRI_TRANSITIONS=50} [2025-03-13 21:34:41,477 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 11 predicate places. [2025-03-13 21:34:41,477 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 50 transitions, 238 flow [2025-03-13 21:34:41,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 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) [2025-03-13 21:34:41,478 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:34:41,478 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] [2025-03-13 21:34:41,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-13 21:34:41,478 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-13 21:34:41,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:34:41,479 INFO L85 PathProgramCache]: Analyzing trace with hash -60029462, now seen corresponding path program 1 times [2025-03-13 21:34:41,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:34:41,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504662415] [2025-03-13 21:34:41,479 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:34:41,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:34:41,485 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-03-13 21:34:41,491 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-03-13 21:34:41,491 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:34:41,491 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:34:41,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:34:41,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:34:41,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504662415] [2025-03-13 21:34:41,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504662415] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:34:41,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:34:41,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-13 21:34:41,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553514890] [2025-03-13 21:34:41,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:34:41,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-13 21:34:41,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:34:41,615 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-13 21:34:41,615 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-13 21:34:41,619 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2025-03-13 21:34:41,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 50 transitions, 238 flow. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 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) [2025-03-13 21:34:41,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:34:41,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2025-03-13 21:34:41,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:34:42,375 INFO L124 PetriNetUnfolderBase]: 11241/15583 cut-off events. [2025-03-13 21:34:42,375 INFO L125 PetriNetUnfolderBase]: For 13647/13647 co-relation queries the response was YES. [2025-03-13 21:34:42,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41125 conditions, 15583 events. 11241/15583 cut-off events. For 13647/13647 co-relation queries the response was YES. Maximal size of possible extension queue 524. Compared 82527 event pairs, 3672 based on Foata normal form. 16/15580 useless extension candidates. Maximal degree in co-relation 41109. Up to 8546 conditions per place. [2025-03-13 21:34:42,449 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 71 selfloop transitions, 7 changer transitions 17/100 dead transitions. [2025-03-13 21:34:42,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 100 transitions, 660 flow [2025-03-13 21:34:42,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-13 21:34:42,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-13 21:34:42,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 122 transitions. [2025-03-13 21:34:42,451 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5422222222222223 [2025-03-13 21:34:42,451 INFO L175 Difference]: Start difference. First operand has 62 places, 50 transitions, 238 flow. Second operand 5 states and 122 transitions. [2025-03-13 21:34:42,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 100 transitions, 660 flow [2025-03-13 21:34:42,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 100 transitions, 471 flow, removed 34 selfloop flow, removed 10 redundant places. [2025-03-13 21:34:42,614 INFO L231 Difference]: Finished difference. Result has 60 places, 56 transitions, 200 flow [2025-03-13 21:34:42,614 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=200, PETRI_PLACES=60, PETRI_TRANSITIONS=56} [2025-03-13 21:34:42,616 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 9 predicate places. [2025-03-13 21:34:42,616 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 56 transitions, 200 flow [2025-03-13 21:34:42,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 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) [2025-03-13 21:34:42,616 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:34:42,616 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] [2025-03-13 21:34:42,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-13 21:34:42,616 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-13 21:34:42,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:34:42,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1230576532, now seen corresponding path program 2 times [2025-03-13 21:34:42,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:34:42,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775311712] [2025-03-13 21:34:42,617 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-13 21:34:42,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:34:42,628 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 34 statements into 1 equivalence classes. [2025-03-13 21:34:42,641 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-03-13 21:34:42,642 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-13 21:34:42,642 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:34:42,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:34:42,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:34:42,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775311712] [2025-03-13 21:34:42,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775311712] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:34:42,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:34:42,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-13 21:34:42,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907577723] [2025-03-13 21:34:42,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:34:42,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-13 21:34:42,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:34:42,790 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-13 21:34:42,790 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-13 21:34:42,798 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2025-03-13 21:34:42,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 56 transitions, 200 flow. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 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) [2025-03-13 21:34:42,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:34:42,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2025-03-13 21:34:42,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:34:43,735 INFO L124 PetriNetUnfolderBase]: 19165/26518 cut-off events. [2025-03-13 21:34:43,736 INFO L125 PetriNetUnfolderBase]: For 11596/11617 co-relation queries the response was YES. [2025-03-13 21:34:43,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68191 conditions, 26518 events. 19165/26518 cut-off events. For 11596/11617 co-relation queries the response was YES. Maximal size of possible extension queue 940. Compared 148202 event pairs, 2589 based on Foata normal form. 34/26528 useless extension candidates. Maximal degree in co-relation 68176. Up to 13312 conditions per place. [2025-03-13 21:34:43,835 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 95 selfloop transitions, 11 changer transitions 47/158 dead transitions. [2025-03-13 21:34:43,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 158 transitions, 858 flow [2025-03-13 21:34:43,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-13 21:34:43,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-13 21:34:43,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 175 transitions. [2025-03-13 21:34:43,836 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2025-03-13 21:34:43,836 INFO L175 Difference]: Start difference. First operand has 60 places, 56 transitions, 200 flow. Second operand 7 states and 175 transitions. [2025-03-13 21:34:43,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 158 transitions, 858 flow [2025-03-13 21:34:43,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 158 transitions, 816 flow, removed 3 selfloop flow, removed 4 redundant places. [2025-03-13 21:34:43,853 INFO L231 Difference]: Finished difference. Result has 65 places, 63 transitions, 264 flow [2025-03-13 21:34:43,853 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=264, PETRI_PLACES=65, PETRI_TRANSITIONS=63} [2025-03-13 21:34:43,853 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 14 predicate places. [2025-03-13 21:34:43,853 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 63 transitions, 264 flow [2025-03-13 21:34:43,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 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) [2025-03-13 21:34:43,854 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:34:43,854 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] [2025-03-13 21:34:43,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-13 21:34:43,854 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-13 21:34:43,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:34:43,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1199807542, now seen corresponding path program 3 times [2025-03-13 21:34:43,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:34:43,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810637617] [2025-03-13 21:34:43,854 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-13 21:34:43,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:34:43,862 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 34 statements into 1 equivalence classes. [2025-03-13 21:34:43,869 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-03-13 21:34:43,869 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-13 21:34:43,869 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:34:43,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:34:43,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:34:43,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810637617] [2025-03-13 21:34:43,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810637617] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:34:43,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:34:43,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-13 21:34:43,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879516539] [2025-03-13 21:34:43,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:34:43,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-13 21:34:43,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:34:43,974 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-13 21:34:43,974 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-13 21:34:43,979 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2025-03-13 21:34:43,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 63 transitions, 264 flow. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 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) [2025-03-13 21:34:43,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:34:43,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2025-03-13 21:34:43,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:34:45,071 INFO L124 PetriNetUnfolderBase]: 20803/28924 cut-off events. [2025-03-13 21:34:45,071 INFO L125 PetriNetUnfolderBase]: For 12376/12376 co-relation queries the response was YES. [2025-03-13 21:34:45,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73724 conditions, 28924 events. 20803/28924 cut-off events. For 12376/12376 co-relation queries the response was YES. Maximal size of possible extension queue 1073. Compared 165883 event pairs, 4012 based on Foata normal form. 48/28971 useless extension candidates. Maximal degree in co-relation 73706. Up to 7400 conditions per place. [2025-03-13 21:34:45,186 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 63 selfloop transitions, 6 changer transitions 150/224 dead transitions. [2025-03-13 21:34:45,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 224 transitions, 1229 flow [2025-03-13 21:34:45,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-13 21:34:45,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-13 21:34:45,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 271 transitions. [2025-03-13 21:34:45,188 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5018518518518519 [2025-03-13 21:34:45,188 INFO L175 Difference]: Start difference. First operand has 65 places, 63 transitions, 264 flow. Second operand 12 states and 271 transitions. [2025-03-13 21:34:45,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 224 transitions, 1229 flow [2025-03-13 21:34:45,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 224 transitions, 1205 flow, removed 9 selfloop flow, removed 3 redundant places. [2025-03-13 21:34:45,208 INFO L231 Difference]: Finished difference. Result has 80 places, 50 transitions, 210 flow [2025-03-13 21:34:45,208 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=210, PETRI_PLACES=80, PETRI_TRANSITIONS=50} [2025-03-13 21:34:45,209 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 29 predicate places. [2025-03-13 21:34:45,209 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 50 transitions, 210 flow [2025-03-13 21:34:45,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 7 states have internal predecessors, (99), 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) [2025-03-13 21:34:45,209 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:34:45,209 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] [2025-03-13 21:34:45,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-13 21:34:45,209 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-13 21:34:45,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:34:45,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1206497112, now seen corresponding path program 4 times [2025-03-13 21:34:45,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:34:45,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773728152] [2025-03-13 21:34:45,209 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-13 21:34:45,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:34:45,215 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 34 statements into 2 equivalence classes. [2025-03-13 21:34:45,226 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 34 of 34 statements. [2025-03-13 21:34:45,227 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-13 21:34:45,227 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:34:45,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 21:34:45,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:34:45,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773728152] [2025-03-13 21:34:45,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773728152] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:34:45,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:34:45,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-13 21:34:45,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389776910] [2025-03-13 21:34:45,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:34:45,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-13 21:34:45,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:34:45,308 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-13 21:34:45,308 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-13 21:34:45,317 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2025-03-13 21:34:45,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 50 transitions, 210 flow. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 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) [2025-03-13 21:34:45,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:34:45,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2025-03-13 21:34:45,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:34:45,486 INFO L124 PetriNetUnfolderBase]: 1943/2761 cut-off events. [2025-03-13 21:34:45,486 INFO L125 PetriNetUnfolderBase]: For 1575/1576 co-relation queries the response was YES. [2025-03-13 21:34:45,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7075 conditions, 2761 events. 1943/2761 cut-off events. For 1575/1576 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 10695 event pairs, 479 based on Foata normal form. 16/2777 useless extension candidates. Maximal degree in co-relation 7059. Up to 2448 conditions per place. [2025-03-13 21:34:45,492 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 0 selfloop transitions, 0 changer transitions 65/65 dead transitions. [2025-03-13 21:34:45,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 65 transitions, 364 flow [2025-03-13 21:34:45,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-13 21:34:45,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-13 21:34:45,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 108 transitions. [2025-03-13 21:34:45,493 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4 [2025-03-13 21:34:45,493 INFO L175 Difference]: Start difference. First operand has 80 places, 50 transitions, 210 flow. Second operand 6 states and 108 transitions. [2025-03-13 21:34:45,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 65 transitions, 364 flow [2025-03-13 21:34:45,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 65 transitions, 316 flow, removed 10 selfloop flow, removed 13 redundant places. [2025-03-13 21:34:45,495 INFO L231 Difference]: Finished difference. Result has 62 places, 0 transitions, 0 flow [2025-03-13 21:34:45,495 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=62, PETRI_TRANSITIONS=0} [2025-03-13 21:34:45,495 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 11 predicate places. [2025-03-13 21:34:45,496 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 0 transitions, 0 flow [2025-03-13 21:34:45,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 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) [2025-03-13 21:34:45,498 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2025-03-13 21:34:45,498 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2025-03-13 21:34:45,498 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2025-03-13 21:34:45,498 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2025-03-13 21:34:45,498 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2025-03-13 21:34:45,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-13 21:34:45,498 INFO L422 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1, 1] [2025-03-13 21:34:45,501 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-13 21:34:45,501 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-13 21:34:45,504 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.03 09:34:45 BasicIcfg [2025-03-13 21:34:45,504 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-13 21:34:45,505 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-13 21:34:45,505 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-13 21:34:45,505 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-13 21:34:45,506 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.03 09:34:35" (3/4) ... [2025-03-13 21:34:45,507 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-13 21:34:45,509 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P0 [2025-03-13 21:34:45,509 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P1 [2025-03-13 21:34:45,509 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P2 [2025-03-13 21:34:45,509 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P3 [2025-03-13 21:34:45,511 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 37 nodes and edges [2025-03-13 21:34:45,512 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2025-03-13 21:34:45,512 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-03-13 21:34:45,512 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-03-13 21:34:45,567 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-13 21:34:45,568 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-13 21:34:45,568 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-13 21:34:45,569 INFO L158 Benchmark]: Toolchain (without parser) took 10608.58ms. Allocated memory was 142.6MB in the beginning and 1.1GB in the end (delta: 989.9MB). Free memory was 111.4MB in the beginning and 281.4MB in the end (delta: -169.9MB). Peak memory consumption was 820.2MB. Max. memory is 16.1GB. [2025-03-13 21:34:45,569 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 201.3MB. Free memory is still 124.5MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-13 21:34:45,569 INFO L158 Benchmark]: CACSL2BoogieTranslator took 341.19ms. Allocated memory is still 142.6MB. Free memory was 111.4MB in the beginning and 91.0MB in the end (delta: 20.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-13 21:34:45,570 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.07ms. Allocated memory is still 142.6MB. Free memory was 91.0MB in the beginning and 89.5MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-13 21:34:45,571 INFO L158 Benchmark]: Boogie Preprocessor took 39.56ms. Allocated memory is still 142.6MB. Free memory was 89.5MB in the beginning and 87.5MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-13 21:34:45,571 INFO L158 Benchmark]: IcfgBuilder took 395.57ms. Allocated memory is still 142.6MB. Free memory was 87.5MB in the beginning and 64.8MB in the end (delta: 22.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-13 21:34:45,571 INFO L158 Benchmark]: TraceAbstraction took 9732.03ms. Allocated memory was 142.6MB in the beginning and 1.1GB in the end (delta: 989.9MB). Free memory was 64.3MB in the beginning and 285.8MB in the end (delta: -221.5MB). Peak memory consumption was 761.5MB. Max. memory is 16.1GB. [2025-03-13 21:34:45,572 INFO L158 Benchmark]: Witness Printer took 63.14ms. Allocated memory is still 1.1GB. Free memory was 285.8MB in the beginning and 281.4MB in the end (delta: 4.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-13 21:34:45,573 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 201.3MB. Free memory is still 124.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 341.19ms. Allocated memory is still 142.6MB. Free memory was 111.4MB in the beginning and 91.0MB in the end (delta: 20.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.07ms. Allocated memory is still 142.6MB. Free memory was 91.0MB in the beginning and 89.5MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.56ms. Allocated memory is still 142.6MB. Free memory was 89.5MB in the beginning and 87.5MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 395.57ms. Allocated memory is still 142.6MB. Free memory was 87.5MB in the beginning and 64.8MB in the end (delta: 22.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 9732.03ms. Allocated memory was 142.6MB in the beginning and 1.1GB in the end (delta: 989.9MB). Free memory was 64.3MB in the beginning and 285.8MB in the end (delta: -221.5MB). Peak memory consumption was 761.5MB. Max. memory is 16.1GB. * Witness Printer took 63.14ms. Allocated memory is still 1.1GB. Free memory was 285.8MB in the beginning and 281.4MB in the end (delta: 4.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 75 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 9.6s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 8.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 762 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 753 mSDsluCounter, 42 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 33 mSDsCounter, 34 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1351 IncrementalHoareTripleChecker+Invalid, 1385 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 34 mSolverCounterUnsat, 9 mSDtfsCounter, 1351 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=264occurred in iteration=6, InterpolantAutomatonStates: 52, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 225 NumberOfCodeBlocks, 225 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 217 ConstructedInterpolants, 0 QuantifiedInterpolants, 953 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-03-13 21:34:45,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE