./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe027_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/safe027_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 7912270168edfe57ed71790473a28594e3bc48002f5ead86961705c042bbf781 --- Real Ultimate output --- This is Ultimate 0.3.0-?-f8ab0bd-m [2025-03-13 21:35:20,375 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-13 21:35:20,423 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-13 21:35:20,430 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-13 21:35:20,432 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-13 21:35:20,453 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-13 21:35:20,455 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-13 21:35:20,455 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-13 21:35:20,455 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-13 21:35:20,456 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-13 21:35:20,456 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-13 21:35:20,456 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-13 21:35:20,456 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-13 21:35:20,456 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-13 21:35:20,456 INFO L153 SettingsManager]: * Use SBE=true [2025-03-13 21:35:20,456 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-13 21:35:20,457 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-13 21:35:20,457 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-13 21:35:20,457 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-13 21:35:20,457 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-13 21:35:20,457 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-13 21:35:20,457 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-13 21:35:20,457 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-13 21:35:20,457 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-13 21:35:20,457 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-13 21:35:20,457 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-13 21:35:20,457 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-13 21:35:20,457 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-13 21:35:20,458 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-13 21:35:20,458 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-13 21:35:20,458 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-13 21:35:20,458 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-13 21:35:20,458 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-13 21:35:20,458 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-13 21:35:20,458 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-13 21:35:20,458 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-13 21:35:20,458 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-13 21:35:20,458 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-13 21:35:20,458 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-13 21:35:20,459 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-13 21:35:20,459 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-13 21:35:20,459 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-13 21:35:20,459 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-13 21:35:20,459 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 -> 7912270168edfe57ed71790473a28594e3bc48002f5ead86961705c042bbf781 [2025-03-13 21:35:20,692 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-13 21:35:20,699 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-13 21:35:20,701 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-13 21:35:20,702 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-13 21:35:20,702 INFO L274 PluginConnector]: CDTParser initialized [2025-03-13 21:35:20,703 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2025-03-13 21:35:21,839 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/967532d85/a86282313bc6424faac872051f8b8410/FLAGeebabf7b1 [2025-03-13 21:35:22,158 INFO L384 CDTParser]: Found 1 translation units. [2025-03-13 21:35:22,159 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2025-03-13 21:35:22,176 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/967532d85/a86282313bc6424faac872051f8b8410/FLAGeebabf7b1 [2025-03-13 21:35:22,406 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/967532d85/a86282313bc6424faac872051f8b8410 [2025-03-13 21:35:22,408 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-13 21:35:22,409 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-13 21:35:22,410 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-13 21:35:22,410 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-13 21:35:22,415 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-13 21:35:22,416 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.03 09:35:22" (1/1) ... [2025-03-13 21:35:22,417 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2427776 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:35:22, skipping insertion in model container [2025-03-13 21:35:22,418 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.03 09:35:22" (1/1) ... [2025-03-13 21:35:22,449 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-13 21:35:22,576 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/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2025-03-13 21:35:22,732 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-13 21:35:22,742 INFO L200 MainTranslator]: Completed pre-run [2025-03-13 21:35:22,752 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/safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2025-03-13 21:35:22,787 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-13 21:35:22,825 INFO L204 MainTranslator]: Completed translation [2025-03-13 21:35:22,825 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:35:22 WrapperNode [2025-03-13 21:35:22,825 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-13 21:35:22,826 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-13 21:35:22,826 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-13 21:35:22,826 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-13 21:35:22,831 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:35:22" (1/1) ... [2025-03-13 21:35:22,843 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:35:22" (1/1) ... [2025-03-13 21:35:22,858 INFO L138 Inliner]: procedures = 176, calls = 46, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 66 [2025-03-13 21:35:22,858 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-13 21:35:22,859 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-13 21:35:22,859 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-13 21:35:22,859 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-13 21:35:22,863 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:35:22" (1/1) ... [2025-03-13 21:35:22,864 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:35:22" (1/1) ... [2025-03-13 21:35:22,865 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:35:22" (1/1) ... [2025-03-13 21:35:22,877 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 21:35:22,878 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:35:22" (1/1) ... [2025-03-13 21:35:22,878 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:35:22" (1/1) ... [2025-03-13 21:35:22,881 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:35:22" (1/1) ... [2025-03-13 21:35:22,881 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:35:22" (1/1) ... [2025-03-13 21:35:22,882 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:35:22" (1/1) ... [2025-03-13 21:35:22,883 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:35:22" (1/1) ... [2025-03-13 21:35:22,886 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-13 21:35:22,886 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-13 21:35:22,887 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-13 21:35:22,887 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-13 21:35:22,887 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:35:22" (1/1) ... [2025-03-13 21:35:22,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-13 21:35:22,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-13 21:35:22,912 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 21:35:22,916 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 21:35:22,930 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-13 21:35:22,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-13 21:35:22,930 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-03-13 21:35:22,930 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-03-13 21:35:22,930 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-03-13 21:35:22,930 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-03-13 21:35:22,930 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-03-13 21:35:22,930 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-03-13 21:35:22,930 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2025-03-13 21:35:22,930 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2025-03-13 21:35:22,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-13 21:35:22,930 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-13 21:35:22,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-13 21:35:22,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-13 21:35:22,931 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 21:35:23,022 INFO L256 CfgBuilder]: Building ICFG [2025-03-13 21:35:23,023 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-13 21:35:23,139 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-13 21:35:23,140 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-13 21:35:23,140 INFO L318 CfgBuilder]: Performing block encoding [2025-03-13 21:35:23,221 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-13 21:35:23,223 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.03 09:35:23 BoogieIcfgContainer [2025-03-13 21:35:23,223 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-13 21:35:23,225 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-13 21:35:23,225 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-13 21:35:23,228 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-13 21:35:23,228 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.03 09:35:22" (1/3) ... [2025-03-13 21:35:23,228 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71d434ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.03 09:35:23, skipping insertion in model container [2025-03-13 21:35:23,229 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 09:35:22" (2/3) ... [2025-03-13 21:35:23,229 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71d434ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.03 09:35:23, skipping insertion in model container [2025-03-13 21:35:23,229 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.03 09:35:23" (3/3) ... [2025-03-13 21:35:23,230 INFO L128 eAbstractionObserver]: Analyzing ICFG safe027_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2025-03-13 21:35:23,241 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-13 21:35:23,244 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG safe027_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 21:35:23,244 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-13 21:35:23,285 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-13 21:35:23,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 45 transitions, 106 flow [2025-03-13 21:35:23,352 INFO L124 PetriNetUnfolderBase]: 1/41 cut-off events. [2025-03-13 21:35:23,353 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-13 21:35:23,357 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 5. Compared 79 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 21:35:23,358 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 45 transitions, 106 flow [2025-03-13 21:35:23,361 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 38 transitions, 88 flow [2025-03-13 21:35:23,367 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-13 21:35:23,374 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;@2e7b16e5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-13 21:35:23,375 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-03-13 21:35:23,383 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-13 21:35:23,383 INFO L124 PetriNetUnfolderBase]: 0/37 cut-off events. [2025-03-13 21:35:23,383 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-13 21:35:23,383 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:35:23,384 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-13 21:35:23,384 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 21:35:23,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:35:23,388 INFO L85 PathProgramCache]: Analyzing trace with hash 9386031, now seen corresponding path program 1 times [2025-03-13 21:35:23,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:35:23,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879521743] [2025-03-13 21:35:23,393 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:35:23,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:35:23,457 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-13 21:35:23,490 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-13 21:35:23,491 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:35:23,491 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:35:23,778 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 21:35:23,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:35:23,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879521743] [2025-03-13 21:35:23,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879521743] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:35:23,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:35:23,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-13 21:35:23,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710141998] [2025-03-13 21:35:23,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:35:23,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-13 21:35:23,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:35:23,803 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-13 21:35:23,804 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-13 21:35:23,805 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2025-03-13 21:35:23,807 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 21:35:23,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:35:23,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2025-03-13 21:35:23,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:35:25,454 INFO L124 PetriNetUnfolderBase]: 19981/28439 cut-off events. [2025-03-13 21:35:25,455 INFO L125 PetriNetUnfolderBase]: For 186/186 co-relation queries the response was YES. [2025-03-13 21:35:25,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55773 conditions, 28439 events. 19981/28439 cut-off events. For 186/186 co-relation queries the response was YES. Maximal size of possible extension queue 1062. Compared 178191 event pairs, 2463 based on Foata normal form. 900/29295 useless extension candidates. Maximal degree in co-relation 55761. Up to 15601 conditions per place. [2025-03-13 21:35:25,600 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 65 selfloop transitions, 6 changer transitions 1/78 dead transitions. [2025-03-13 21:35:25,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 78 transitions, 321 flow [2025-03-13 21:35:25,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-13 21:35:25,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-13 21:35:25,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 118 transitions. [2025-03-13 21:35:25,614 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6555555555555556 [2025-03-13 21:35:25,615 INFO L175 Difference]: Start difference. First operand has 51 places, 38 transitions, 88 flow. Second operand 4 states and 118 transitions. [2025-03-13 21:35:25,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 78 transitions, 321 flow [2025-03-13 21:35:25,624 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 21:35:25,627 INFO L231 Difference]: Finished difference. Result has 52 places, 42 transitions, 126 flow [2025-03-13 21:35:25,629 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 21:35:25,632 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 1 predicate places. [2025-03-13 21:35:25,633 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 42 transitions, 126 flow [2025-03-13 21:35:25,633 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 21:35:25,633 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:35:25,633 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 21:35:25,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-13 21:35:25,634 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 21:35:25,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:35:25,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1545681353, now seen corresponding path program 1 times [2025-03-13 21:35:25,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:35:25,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71091225] [2025-03-13 21:35:25,635 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:35:25,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:35:25,652 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-13 21:35:25,674 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-13 21:35:25,674 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:35:25,674 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:35:25,821 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 21:35:25,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:35:25,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71091225] [2025-03-13 21:35:25,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71091225] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:35:25,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:35:25,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-13 21:35:25,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761418105] [2025-03-13 21:35:25,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:35:25,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-13 21:35:25,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:35:25,824 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-13 21:35:25,824 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-13 21:35:25,824 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2025-03-13 21:35:25,824 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 21:35:25,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:35:25,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2025-03-13 21:35:25,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:35:26,882 INFO L124 PetriNetUnfolderBase]: 13861/19823 cut-off events. [2025-03-13 21:35:26,883 INFO L125 PetriNetUnfolderBase]: For 4080/4080 co-relation queries the response was YES. [2025-03-13 21:35:26,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45025 conditions, 19823 events. 13861/19823 cut-off events. For 4080/4080 co-relation queries the response was YES. Maximal size of possible extension queue 643. Compared 116937 event pairs, 1337 based on Foata normal form. 756/20535 useless extension candidates. Maximal degree in co-relation 45013. Up to 8041 conditions per place. [2025-03-13 21:35:27,003 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 84 selfloop transitions, 10 changer transitions 1/101 dead transitions. [2025-03-13 21:35:27,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 101 transitions, 463 flow [2025-03-13 21:35:27,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-13 21:35:27,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-13 21:35:27,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 152 transitions. [2025-03-13 21:35:27,006 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6755555555555556 [2025-03-13 21:35:27,006 INFO L175 Difference]: Start difference. First operand has 52 places, 42 transitions, 126 flow. Second operand 5 states and 152 transitions. [2025-03-13 21:35:27,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 101 transitions, 463 flow [2025-03-13 21:35:27,018 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 21:35:27,020 INFO L231 Difference]: Finished difference. Result has 56 places, 46 transitions, 178 flow [2025-03-13 21:35:27,020 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 21:35:27,021 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 5 predicate places. [2025-03-13 21:35:27,021 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 46 transitions, 178 flow [2025-03-13 21:35:27,021 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 21:35:27,021 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:35:27,021 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 21:35:27,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-13 21:35:27,022 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 21:35:27,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:35:27,023 INFO L85 PathProgramCache]: Analyzing trace with hash 243540513, now seen corresponding path program 1 times [2025-03-13 21:35:27,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:35:27,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716097601] [2025-03-13 21:35:27,024 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:35:27,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:35:27,034 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-13 21:35:27,049 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-13 21:35:27,049 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:35:27,049 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:35:27,198 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 21:35:27,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:35:27,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716097601] [2025-03-13 21:35:27,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716097601] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:35:27,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:35:27,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-13 21:35:27,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881302087] [2025-03-13 21:35:27,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:35:27,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-13 21:35:27,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:35:27,201 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-13 21:35:27,201 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-03-13 21:35:27,202 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2025-03-13 21:35:27,202 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 21:35:27,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:35:27,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2025-03-13 21:35:27,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:35:27,720 INFO L124 PetriNetUnfolderBase]: 8597/12179 cut-off events. [2025-03-13 21:35:27,722 INFO L125 PetriNetUnfolderBase]: For 7798/7798 co-relation queries the response was YES. [2025-03-13 21:35:27,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30639 conditions, 12179 events. 8597/12179 cut-off events. For 7798/7798 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 64466 event pairs, 1091 based on Foata normal form. 420/12555 useless extension candidates. Maximal degree in co-relation 30625. Up to 3644 conditions per place. [2025-03-13 21:35:27,782 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 101 selfloop transitions, 14 changer transitions 1/122 dead transitions. [2025-03-13 21:35:27,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 122 transitions, 610 flow [2025-03-13 21:35:27,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-13 21:35:27,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-13 21:35:27,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 184 transitions. [2025-03-13 21:35:27,784 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6814814814814815 [2025-03-13 21:35:27,784 INFO L175 Difference]: Start difference. First operand has 56 places, 46 transitions, 178 flow. Second operand 6 states and 184 transitions. [2025-03-13 21:35:27,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 122 transitions, 610 flow [2025-03-13 21:35:27,853 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 21:35:27,854 INFO L231 Difference]: Finished difference. Result has 59 places, 50 transitions, 228 flow [2025-03-13 21:35:27,854 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 21:35:27,854 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 8 predicate places. [2025-03-13 21:35:27,854 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 50 transitions, 228 flow [2025-03-13 21:35:27,855 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 21:35:27,855 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:35:27,855 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 21:35:27,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-13 21:35:27,855 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 21:35:27,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:35:27,855 INFO L85 PathProgramCache]: Analyzing trace with hash -155861429, now seen corresponding path program 1 times [2025-03-13 21:35:27,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:35:27,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72412557] [2025-03-13 21:35:27,856 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:35:27,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:35:27,866 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-03-13 21:35:27,875 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-03-13 21:35:27,875 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:35:27,875 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:35:28,000 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 21:35:28,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:35:28,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72412557] [2025-03-13 21:35:28,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72412557] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:35:28,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:35:28,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-13 21:35:28,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513243463] [2025-03-13 21:35:28,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:35:28,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-13 21:35:28,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:35:28,002 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-13 21:35:28,002 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-03-13 21:35:28,003 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2025-03-13 21:35:28,003 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 21:35:28,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:35:28,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2025-03-13 21:35:28,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:35:28,438 INFO L124 PetriNetUnfolderBase]: 6433/8939 cut-off events. [2025-03-13 21:35:28,439 INFO L125 PetriNetUnfolderBase]: For 7858/7858 co-relation queries the response was YES. [2025-03-13 21:35:28,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23640 conditions, 8939 events. 6433/8939 cut-off events. For 7858/7858 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 44717 event pairs, 977 based on Foata normal form. 128/9023 useless extension candidates. Maximal degree in co-relation 23625. Up to 3076 conditions per place. [2025-03-13 21:35:28,476 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 88 selfloop transitions, 18 changer transitions 1/113 dead transitions. [2025-03-13 21:35:28,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 113 transitions, 584 flow [2025-03-13 21:35:28,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-13 21:35:28,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-13 21:35:28,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 186 transitions. [2025-03-13 21:35:28,480 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5904761904761905 [2025-03-13 21:35:28,481 INFO L175 Difference]: Start difference. First operand has 59 places, 50 transitions, 228 flow. Second operand 7 states and 186 transitions. [2025-03-13 21:35:28,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 113 transitions, 584 flow [2025-03-13 21:35:28,555 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 21:35:28,556 INFO L231 Difference]: Finished difference. Result has 62 places, 50 transitions, 238 flow [2025-03-13 21:35:28,557 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 21:35:28,558 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 11 predicate places. [2025-03-13 21:35:28,558 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 50 transitions, 238 flow [2025-03-13 21:35:28,559 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 21:35:28,559 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:35:28,559 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 21:35:28,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-13 21:35:28,559 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 21:35:28,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:35:28,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1430564694, now seen corresponding path program 1 times [2025-03-13 21:35:28,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:35:28,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108538122] [2025-03-13 21:35:28,559 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 21:35:28,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:35:28,568 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-03-13 21:35:28,577 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-03-13 21:35:28,578 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 21:35:28,578 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:35:28,729 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 21:35:28,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:35:28,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108538122] [2025-03-13 21:35:28,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108538122] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:35:28,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:35:28,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-13 21:35:28,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154427889] [2025-03-13 21:35:28,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:35:28,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-13 21:35:28,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:35:28,731 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-13 21:35:28,731 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-13 21:35:28,736 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2025-03-13 21:35:28,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 50 transitions, 238 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 21:35:28,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:35:28,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2025-03-13 21:35:28,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:35:29,194 INFO L124 PetriNetUnfolderBase]: 9549/13221 cut-off events. [2025-03-13 21:35:29,194 INFO L125 PetriNetUnfolderBase]: For 12038/12038 co-relation queries the response was YES. [2025-03-13 21:35:29,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34851 conditions, 13221 events. 9549/13221 cut-off events. For 12038/12038 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 68055 event pairs, 1653 based on Foata normal form. 16/13160 useless extension candidates. Maximal degree in co-relation 34835. Up to 5616 conditions per place. [2025-03-13 21:35:29,238 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 73 selfloop transitions, 3 changer transitions 32/113 dead transitions. [2025-03-13 21:35:29,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 113 transitions, 760 flow [2025-03-13 21:35:29,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-13 21:35:29,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-13 21:35:29,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 139 transitions. [2025-03-13 21:35:29,239 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5148148148148148 [2025-03-13 21:35:29,239 INFO L175 Difference]: Start difference. First operand has 62 places, 50 transitions, 238 flow. Second operand 6 states and 139 transitions. [2025-03-13 21:35:29,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 113 transitions, 760 flow [2025-03-13 21:35:29,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 113 transitions, 535 flow, removed 34 selfloop flow, removed 10 redundant places. [2025-03-13 21:35:29,407 INFO L231 Difference]: Finished difference. Result has 60 places, 50 transitions, 156 flow [2025-03-13 21:35:29,407 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=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=156, PETRI_PLACES=60, PETRI_TRANSITIONS=50} [2025-03-13 21:35:29,407 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 9 predicate places. [2025-03-13 21:35:29,407 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 50 transitions, 156 flow [2025-03-13 21:35:29,407 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 21:35:29,407 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:35:29,408 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 21:35:29,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-13 21:35:29,408 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 21:35:29,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:35:29,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1662225218, now seen corresponding path program 2 times [2025-03-13 21:35:29,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:35:29,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275558274] [2025-03-13 21:35:29,408 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-13 21:35:29,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:35:29,417 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 34 statements into 1 equivalence classes. [2025-03-13 21:35:29,423 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-03-13 21:35:29,423 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-13 21:35:29,423 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:35:29,537 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 21:35:29,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:35:29,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275558274] [2025-03-13 21:35:29,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275558274] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:35:29,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:35:29,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-13 21:35:29,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267841998] [2025-03-13 21:35:29,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:35:29,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-13 21:35:29,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:35:29,538 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-13 21:35:29,538 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-13 21:35:29,543 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2025-03-13 21:35:29,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 50 transitions, 156 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 21:35:29,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:35:29,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2025-03-13 21:35:29,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:35:29,934 INFO L124 PetriNetUnfolderBase]: 6483/9020 cut-off events. [2025-03-13 21:35:29,934 INFO L125 PetriNetUnfolderBase]: For 1573/1573 co-relation queries the response was YES. [2025-03-13 21:35:29,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20600 conditions, 9020 events. 6483/9020 cut-off events. For 1573/1573 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 43352 event pairs, 1208 based on Foata normal form. 16/9035 useless extension candidates. Maximal degree in co-relation 20586. Up to 5052 conditions per place. [2025-03-13 21:35:29,967 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 93 selfloop transitions, 9 changer transitions 22/129 dead transitions. [2025-03-13 21:35:29,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 129 transitions, 645 flow [2025-03-13 21:35:29,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-13 21:35:29,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-13 21:35:29,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2025-03-13 21:35:29,969 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2025-03-13 21:35:29,969 INFO L175 Difference]: Start difference. First operand has 60 places, 50 transitions, 156 flow. Second operand 7 states and 165 transitions. [2025-03-13 21:35:29,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 129 transitions, 645 flow [2025-03-13 21:35:29,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 129 transitions, 617 flow, removed 5 selfloop flow, removed 5 redundant places. [2025-03-13 21:35:29,974 INFO L231 Difference]: Finished difference. Result has 64 places, 57 transitions, 210 flow [2025-03-13 21:35:29,975 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=210, PETRI_PLACES=64, PETRI_TRANSITIONS=57} [2025-03-13 21:35:29,975 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 13 predicate places. [2025-03-13 21:35:29,975 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 57 transitions, 210 flow [2025-03-13 21:35:29,975 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 21:35:29,975 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:35:29,976 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 21:35:29,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-13 21:35:29,976 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 21:35:29,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:35:29,976 INFO L85 PathProgramCache]: Analyzing trace with hash -556438004, now seen corresponding path program 3 times [2025-03-13 21:35:29,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:35:29,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418337586] [2025-03-13 21:35:29,976 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-13 21:35:29,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:35:29,982 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 34 statements into 1 equivalence classes. [2025-03-13 21:35:29,988 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-03-13 21:35:29,989 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-13 21:35:29,989 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:35:30,089 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 21:35:30,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:35:30,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418337586] [2025-03-13 21:35:30,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418337586] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:35:30,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:35:30,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-13 21:35:30,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681247168] [2025-03-13 21:35:30,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:35:30,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-13 21:35:30,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:35:30,090 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-13 21:35:30,091 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-13 21:35:30,096 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2025-03-13 21:35:30,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 57 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 21:35:30,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:35:30,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2025-03-13 21:35:30,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:35:30,557 INFO L124 PetriNetUnfolderBase]: 9107/12656 cut-off events. [2025-03-13 21:35:30,557 INFO L125 PetriNetUnfolderBase]: For 7203/7203 co-relation queries the response was YES. [2025-03-13 21:35:30,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31554 conditions, 12656 events. 9107/12656 cut-off events. For 7203/7203 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 63947 event pairs, 2178 based on Foata normal form. 16/12666 useless extension candidates. Maximal degree in co-relation 31538. Up to 8456 conditions per place. [2025-03-13 21:35:30,588 INFO L140 encePairwiseOnDemand]: 36/45 looper letters, 59 selfloop transitions, 9 changer transitions 48/121 dead transitions. [2025-03-13 21:35:30,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 121 transitions, 654 flow [2025-03-13 21:35:30,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-13 21:35:30,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-13 21:35:30,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 152 transitions. [2025-03-13 21:35:30,590 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48253968253968255 [2025-03-13 21:35:30,590 INFO L175 Difference]: Start difference. First operand has 64 places, 57 transitions, 210 flow. Second operand 7 states and 152 transitions. [2025-03-13 21:35:30,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 121 transitions, 654 flow [2025-03-13 21:35:30,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 121 transitions, 648 flow, removed 3 selfloop flow, removed 2 redundant places. [2025-03-13 21:35:30,594 INFO L231 Difference]: Finished difference. Result has 70 places, 57 transitions, 240 flow [2025-03-13 21:35:30,594 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=240, PETRI_PLACES=70, PETRI_TRANSITIONS=57} [2025-03-13 21:35:30,594 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 19 predicate places. [2025-03-13 21:35:30,594 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 57 transitions, 240 flow [2025-03-13 21:35:30,594 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 21:35:30,594 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 21:35:30,594 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 21:35:30,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-13 21:35:30,595 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 21:35:30,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 21:35:30,595 INFO L85 PathProgramCache]: Analyzing trace with hash -746738016, now seen corresponding path program 4 times [2025-03-13 21:35:30,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 21:35:30,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987922104] [2025-03-13 21:35:30,595 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-13 21:35:30,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 21:35:30,600 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 34 statements into 2 equivalence classes. [2025-03-13 21:35:30,606 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 21:35:30,606 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-13 21:35:30,606 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 21:35:30,726 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 21:35:30,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 21:35:30,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987922104] [2025-03-13 21:35:30,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987922104] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 21:35:30,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 21:35:30,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-13 21:35:30,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019589665] [2025-03-13 21:35:30,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 21:35:30,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-13 21:35:30,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 21:35:30,727 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-13 21:35:30,727 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-13 21:35:30,731 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2025-03-13 21:35:30,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 57 transitions, 240 flow. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 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 21:35:30,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 21:35:30,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2025-03-13 21:35:30,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 21:35:31,291 INFO L124 PetriNetUnfolderBase]: 9519/13425 cut-off events. [2025-03-13 21:35:31,291 INFO L125 PetriNetUnfolderBase]: For 12941/12944 co-relation queries the response was YES. [2025-03-13 21:35:31,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34725 conditions, 13425 events. 9519/13425 cut-off events. For 12941/12944 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 71753 event pairs, 1399 based on Foata normal form. 16/13438 useless extension candidates. Maximal degree in co-relation 34714. Up to 6876 conditions per place. [2025-03-13 21:35:31,314 INFO L140 encePairwiseOnDemand]: 37/45 looper letters, 0 selfloop transitions, 0 changer transitions 121/121 dead transitions. [2025-03-13 21:35:31,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 121 transitions, 715 flow [2025-03-13 21:35:31,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-13 21:35:31,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-13 21:35:31,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 132 transitions. [2025-03-13 21:35:31,315 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4888888888888889 [2025-03-13 21:35:31,316 INFO L175 Difference]: Start difference. First operand has 70 places, 57 transitions, 240 flow. Second operand 6 states and 132 transitions. [2025-03-13 21:35:31,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 121 transitions, 715 flow [2025-03-13 21:35:31,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 121 transitions, 697 flow, removed 9 selfloop flow, removed 1 redundant places. [2025-03-13 21:35:31,323 INFO L231 Difference]: Finished difference. Result has 69 places, 0 transitions, 0 flow [2025-03-13 21:35:31,323 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=69, PETRI_TRANSITIONS=0} [2025-03-13 21:35:31,324 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, 18 predicate places. [2025-03-13 21:35:31,324 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 0 transitions, 0 flow [2025-03-13 21:35:31,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 7 states have internal predecessors, (92), 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 21:35:31,326 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2025-03-13 21:35:31,326 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2025-03-13 21:35:31,326 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2025-03-13 21:35:31,326 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2025-03-13 21:35:31,326 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2025-03-13 21:35:31,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-13 21:35:31,327 INFO L422 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1, 1] [2025-03-13 21:35:31,329 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-13 21:35:31,329 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-13 21:35:31,333 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.03 09:35:31 BasicIcfg [2025-03-13 21:35:31,333 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-13 21:35:31,334 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-13 21:35:31,334 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-13 21:35:31,334 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-13 21:35:31,334 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.03 09:35:23" (3/4) ... [2025-03-13 21:35:31,336 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-13 21:35:31,338 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P0 [2025-03-13 21:35:31,338 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P1 [2025-03-13 21:35:31,338 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P2 [2025-03-13 21:35:31,338 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P3 [2025-03-13 21:35:31,341 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 39 nodes and edges [2025-03-13 21:35:31,341 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2025-03-13 21:35:31,342 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-03-13 21:35:31,342 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-03-13 21:35:31,396 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-13 21:35:31,397 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-13 21:35:31,397 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-13 21:35:31,397 INFO L158 Benchmark]: Toolchain (without parser) took 8988.54ms. Allocated memory was 142.6MB in the beginning and 1.1GB in the end (delta: 973.1MB). Free memory was 104.4MB in the beginning and 809.6MB in the end (delta: -705.2MB). Peak memory consumption was 268.0MB. Max. memory is 16.1GB. [2025-03-13 21:35:31,398 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 201.3MB. Free memory is still 114.2MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-13 21:35:31,398 INFO L158 Benchmark]: CACSL2BoogieTranslator took 415.42ms. Allocated memory is still 142.6MB. Free memory was 104.4MB in the beginning and 84.5MB in the end (delta: 19.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-13 21:35:31,399 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.46ms. Allocated memory is still 142.6MB. Free memory was 83.7MB in the beginning and 82.1MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-13 21:35:31,399 INFO L158 Benchmark]: Boogie Preprocessor took 27.24ms. Allocated memory is still 142.6MB. Free memory was 82.1MB in the beginning and 80.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-13 21:35:31,399 INFO L158 Benchmark]: IcfgBuilder took 336.34ms. Allocated memory is still 142.6MB. Free memory was 80.6MB in the beginning and 56.9MB in the end (delta: 23.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-13 21:35:31,399 INFO L158 Benchmark]: TraceAbstraction took 8108.74ms. Allocated memory was 142.6MB in the beginning and 1.1GB in the end (delta: 973.1MB). Free memory was 56.2MB in the beginning and 818.0MB in the end (delta: -761.8MB). Peak memory consumption was 209.3MB. Max. memory is 16.1GB. [2025-03-13 21:35:31,399 INFO L158 Benchmark]: Witness Printer took 63.09ms. Allocated memory is still 1.1GB. Free memory was 818.0MB in the beginning and 809.6MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-13 21:35:31,400 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 201.3MB. Free memory is still 114.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 415.42ms. Allocated memory is still 142.6MB. Free memory was 104.4MB in the beginning and 84.5MB in the end (delta: 19.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.46ms. Allocated memory is still 142.6MB. Free memory was 83.7MB in the beginning and 82.1MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.24ms. Allocated memory is still 142.6MB. Free memory was 82.1MB in the beginning and 80.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 336.34ms. Allocated memory is still 142.6MB. Free memory was 80.6MB in the beginning and 56.9MB in the end (delta: 23.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 8108.74ms. Allocated memory was 142.6MB in the beginning and 1.1GB in the end (delta: 973.1MB). Free memory was 56.2MB in the beginning and 818.0MB in the end (delta: -761.8MB). Peak memory consumption was 209.3MB. Max. memory is 16.1GB. * Witness Printer took 63.09ms. Allocated memory is still 1.1GB. Free memory was 818.0MB in the beginning and 809.6MB in the end (delta: 8.4MB). 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: 8.0s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 6.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 736 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 729 mSDsluCounter, 44 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 44 mSDsCounter, 31 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1310 IncrementalHoareTripleChecker+Invalid, 1341 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 31 mSolverCounterUnsat, 0 mSDtfsCounter, 1310 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=240occurred in iteration=7, InterpolantAutomatonStates: 48, 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, 1.2s InterpolantComputationTime, 225 NumberOfCodeBlocks, 225 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 217 ConstructedInterpolants, 0 QuantifiedInterpolants, 1160 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 21:35:31,414 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE