./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 26c7def9550acbb8db0f014014632a2eeeeca7df9ce503e9999e1bc5b1d84980 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 04:24:35,939 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 04:24:35,995 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-06 04:24:36,000 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 04:24:36,003 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 04:24:36,016 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 04:24:36,017 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 04:24:36,017 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 04:24:36,017 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 04:24:36,017 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 04:24:36,017 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 04:24:36,018 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 04:24:36,018 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 04:24:36,018 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 04:24:36,018 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 04:24:36,018 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 04:24:36,018 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 04:24:36,018 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 04:24:36,018 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 04:24:36,018 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 04:24:36,019 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 04:24:36,019 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 04:24:36,019 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 04:24:36,019 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 04:24:36,019 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 04:24:36,019 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 04:24:36,019 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 04:24:36,019 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 04:24:36,019 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 04:24:36,019 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 04:24:36,019 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 04:24:36,020 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 04:24:36,020 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:24:36,020 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 04:24:36,020 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 04:24:36,020 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 04:24:36,020 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 04:24:36,020 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 04:24:36,020 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 04:24:36,020 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 04:24:36,020 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 04:24:36,020 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 04:24:36,021 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 04:24:36,021 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-jdk21/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 -> 26c7def9550acbb8db0f014014632a2eeeeca7df9ce503e9999e1bc5b1d84980 [2025-02-06 04:24:36,228 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 04:24:36,236 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 04:24:36,238 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 04:24:36,239 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 04:24:36,239 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 04:24:36,240 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2025-02-06 04:24:37,627 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b1afce7db/4e75813508d14322af728afafe43db0d/FLAG2f71d50d9 [2025-02-06 04:24:38,029 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 04:24:38,030 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2025-02-06 04:24:38,044 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b1afce7db/4e75813508d14322af728afafe43db0d/FLAG2f71d50d9 [2025-02-06 04:24:38,245 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b1afce7db/4e75813508d14322af728afafe43db0d [2025-02-06 04:24:38,247 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 04:24:38,248 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 04:24:38,250 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 04:24:38,251 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 04:24:38,254 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 04:24:38,254 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:24:38" (1/1) ... [2025-02-06 04:24:38,255 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27b8530a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:24:38, skipping insertion in model container [2025-02-06 04:24:38,256 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:24:38" (1/1) ... [2025-02-06 04:24:38,283 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 04:24:38,405 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2025-02-06 04:24:38,523 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:24:38,530 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 04:24:38,536 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2025-02-06 04:24:38,569 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:24:38,595 INFO L204 MainTranslator]: Completed translation [2025-02-06 04:24:38,595 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:24:38 WrapperNode [2025-02-06 04:24:38,595 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 04:24:38,596 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 04:24:38,596 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 04:24:38,596 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 04:24:38,600 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:24:38" (1/1) ... [2025-02-06 04:24:38,610 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:24:38" (1/1) ... [2025-02-06 04:24:38,628 INFO L138 Inliner]: procedures = 175, calls = 41, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 58 [2025-02-06 04:24:38,628 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 04:24:38,628 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 04:24:38,629 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 04:24:38,629 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 04:24:38,633 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:24:38" (1/1) ... [2025-02-06 04:24:38,636 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:24:38" (1/1) ... [2025-02-06 04:24:38,638 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:24:38" (1/1) ... [2025-02-06 04:24:38,648 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]. [2025-02-06 04:24:38,648 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:24:38" (1/1) ... [2025-02-06 04:24:38,649 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:24:38" (1/1) ... [2025-02-06 04:24:38,651 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:24:38" (1/1) ... [2025-02-06 04:24:38,652 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:24:38" (1/1) ... [2025-02-06 04:24:38,652 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:24:38" (1/1) ... [2025-02-06 04:24:38,653 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:24:38" (1/1) ... [2025-02-06 04:24:38,654 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 04:24:38,655 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 04:24:38,655 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 04:24:38,655 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 04:24:38,655 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:24:38" (1/1) ... [2025-02-06 04:24:38,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:24:38,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:24:38,676 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 04:24:38,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 04:24:38,697 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-06 04:24:38,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 04:24:38,697 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-02-06 04:24:38,700 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-02-06 04:24:38,700 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-02-06 04:24:38,700 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-02-06 04:24:38,701 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-02-06 04:24:38,701 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-02-06 04:24:38,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 04:24:38,701 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-06 04:24:38,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 04:24:38,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 04:24:38,702 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 04:24:38,788 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 04:24:38,790 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 04:24:38,886 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 04:24:38,886 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 04:24:38,974 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 04:24:38,975 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 04:24:38,975 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:24:38 BoogieIcfgContainer [2025-02-06 04:24:38,976 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 04:24:38,977 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 04:24:38,977 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 04:24:38,980 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 04:24:38,981 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 04:24:38" (1/3) ... [2025-02-06 04:24:38,982 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42ef6254 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:24:38, skipping insertion in model container [2025-02-06 04:24:38,982 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:24:38" (2/3) ... [2025-02-06 04:24:38,982 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42ef6254 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:24:38, skipping insertion in model container [2025-02-06 04:24:38,983 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:24:38" (3/3) ... [2025-02-06 04:24:38,984 INFO L128 eAbstractionObserver]: Analyzing ICFG safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2025-02-06 04:24:38,994 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 04:24:38,998 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i that has 4 procedures, 38 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-02-06 04:24:38,999 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 04:24:39,042 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-06 04:24:39,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 38 transitions, 88 flow [2025-02-06 04:24:39,093 INFO L124 PetriNetUnfolderBase]: 1/35 cut-off events. [2025-02-06 04:24:39,097 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 04:24:39,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 35 events. 1/35 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 61 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2025-02-06 04:24:39,099 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 38 transitions, 88 flow [2025-02-06 04:24:39,100 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 32 transitions, 73 flow [2025-02-06 04:24:39,105 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 04:24:39,117 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;@72c9702, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 04:24:39,118 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-02-06 04:24:39,125 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 04:24:39,126 INFO L124 PetriNetUnfolderBase]: 0/31 cut-off events. [2025-02-06 04:24:39,126 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 04:24:39,126 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:24:39,126 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:24:39,127 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:24:39,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:24:39,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1759975645, now seen corresponding path program 1 times [2025-02-06 04:24:39,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:24:39,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824290443] [2025-02-06 04:24:39,140 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:24:39,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:24:39,228 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-06 04:24:39,269 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-06 04:24:39,270 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:24:39,271 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:24:39,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:24:39,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:24:39,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824290443] [2025-02-06 04:24:39,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824290443] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:24:39,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:24:39,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 04:24:39,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283274672] [2025-02-06 04:24:39,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:24:39,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 04:24:39,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:24:39,497 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 04:24:39,497 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 04:24:39,499 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2025-02-06 04:24:39,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2025-02-06 04:24:39,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:24:39,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2025-02-06 04:24:39,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:24:39,973 INFO L124 PetriNetUnfolderBase]: 3123/4931 cut-off events. [2025-02-06 04:24:39,974 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2025-02-06 04:24:39,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9638 conditions, 4931 events. 3123/4931 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 28086 event pairs, 535 based on Foata normal form. 216/5142 useless extension candidates. Maximal degree in co-relation 9627. Up to 2501 conditions per place. [2025-02-06 04:24:40,063 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 54 selfloop transitions, 5 changer transitions 1/65 dead transitions. [2025-02-06 04:24:40,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 65 transitions, 265 flow [2025-02-06 04:24:40,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 04:24:40,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 04:24:40,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2025-02-06 04:24:40,077 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6447368421052632 [2025-02-06 04:24:40,078 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 73 flow. Second operand 4 states and 98 transitions. [2025-02-06 04:24:40,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 65 transitions, 265 flow [2025-02-06 04:24:40,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 65 transitions, 260 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 04:24:40,086 INFO L231 Difference]: Finished difference. Result has 44 places, 35 transitions, 104 flow [2025-02-06 04:24:40,089 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=104, PETRI_PLACES=44, PETRI_TRANSITIONS=35} [2025-02-06 04:24:40,093 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 2 predicate places. [2025-02-06 04:24:40,094 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 35 transitions, 104 flow [2025-02-06 04:24:40,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2025-02-06 04:24:40,094 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:24:40,094 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:24:40,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 04:24:40,094 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:24:40,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:24:40,095 INFO L85 PathProgramCache]: Analyzing trace with hash 672314451, now seen corresponding path program 1 times [2025-02-06 04:24:40,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:24:40,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147563146] [2025-02-06 04:24:40,095 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:24:40,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:24:40,113 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 04:24:40,129 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 04:24:40,132 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:24:40,132 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:24:40,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:24:40,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:24:40,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147563146] [2025-02-06 04:24:40,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147563146] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:24:40,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:24:40,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 04:24:40,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453765782] [2025-02-06 04:24:40,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:24:40,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:24:40,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:24:40,274 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:24:40,274 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 04:24:40,274 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2025-02-06 04:24:40,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 35 transitions, 104 flow. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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) [2025-02-06 04:24:40,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:24:40,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2025-02-06 04:24:40,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:24:40,623 INFO L124 PetriNetUnfolderBase]: 1827/2899 cut-off events. [2025-02-06 04:24:40,624 INFO L125 PetriNetUnfolderBase]: For 600/600 co-relation queries the response was YES. [2025-02-06 04:24:40,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6659 conditions, 2899 events. 1827/2899 cut-off events. For 600/600 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 14447 event pairs, 339 based on Foata normal form. 152/3046 useless extension candidates. Maximal degree in co-relation 6647. Up to 960 conditions per place. [2025-02-06 04:24:40,636 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 69 selfloop transitions, 8 changer transitions 1/83 dead transitions. [2025-02-06 04:24:40,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 83 transitions, 377 flow [2025-02-06 04:24:40,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 04:24:40,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 04:24:40,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2025-02-06 04:24:40,639 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6578947368421053 [2025-02-06 04:24:40,639 INFO L175 Difference]: Start difference. First operand has 44 places, 35 transitions, 104 flow. Second operand 5 states and 125 transitions. [2025-02-06 04:24:40,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 83 transitions, 377 flow [2025-02-06 04:24:40,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 83 transitions, 367 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-02-06 04:24:40,644 INFO L231 Difference]: Finished difference. Result has 48 places, 38 transitions, 144 flow [2025-02-06 04:24:40,644 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=144, PETRI_PLACES=48, PETRI_TRANSITIONS=38} [2025-02-06 04:24:40,645 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 6 predicate places. [2025-02-06 04:24:40,645 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 38 transitions, 144 flow [2025-02-06 04:24:40,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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) [2025-02-06 04:24:40,645 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:24:40,645 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] [2025-02-06 04:24:40,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 04:24:40,646 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:24:40,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:24:40,646 INFO L85 PathProgramCache]: Analyzing trace with hash 686531963, now seen corresponding path program 1 times [2025-02-06 04:24:40,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:24:40,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510499022] [2025-02-06 04:24:40,647 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:24:40,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:24:40,657 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-06 04:24:40,672 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-06 04:24:40,673 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:24:40,673 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:24:40,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:24:40,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:24:40,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510499022] [2025-02-06 04:24:40,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510499022] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:24:40,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:24:40,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 04:24:40,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476904389] [2025-02-06 04:24:40,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:24:40,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 04:24:40,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:24:40,816 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 04:24:40,816 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-02-06 04:24:40,816 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2025-02-06 04:24:40,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 38 transitions, 144 flow. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 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) [2025-02-06 04:24:40,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:24:40,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2025-02-06 04:24:40,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:24:41,011 INFO L124 PetriNetUnfolderBase]: 1155/1795 cut-off events. [2025-02-06 04:24:41,011 INFO L125 PetriNetUnfolderBase]: For 1138/1138 co-relation queries the response was YES. [2025-02-06 04:24:41,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4519 conditions, 1795 events. 1155/1795 cut-off events. For 1138/1138 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 7937 event pairs, 303 based on Foata normal form. 56/1846 useless extension candidates. Maximal degree in co-relation 4505. Up to 672 conditions per place. [2025-02-06 04:24:41,020 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 58 selfloop transitions, 11 changer transitions 1/75 dead transitions. [2025-02-06 04:24:41,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 75 transitions, 368 flow [2025-02-06 04:24:41,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 04:24:41,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 04:24:41,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 126 transitions. [2025-02-06 04:24:41,022 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5526315789473685 [2025-02-06 04:24:41,023 INFO L175 Difference]: Start difference. First operand has 48 places, 38 transitions, 144 flow. Second operand 6 states and 126 transitions. [2025-02-06 04:24:41,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 75 transitions, 368 flow [2025-02-06 04:24:41,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 75 transitions, 343 flow, removed 4 selfloop flow, removed 4 redundant places. [2025-02-06 04:24:41,035 INFO L231 Difference]: Finished difference. Result has 51 places, 38 transitions, 158 flow [2025-02-06 04:24:41,035 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=158, PETRI_PLACES=51, PETRI_TRANSITIONS=38} [2025-02-06 04:24:41,036 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 9 predicate places. [2025-02-06 04:24:41,036 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 38 transitions, 158 flow [2025-02-06 04:24:41,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 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) [2025-02-06 04:24:41,037 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:24:41,037 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] [2025-02-06 04:24:41,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 04:24:41,037 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:24:41,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:24:41,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1610147117, now seen corresponding path program 1 times [2025-02-06 04:24:41,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:24:41,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583052917] [2025-02-06 04:24:41,038 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:24:41,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:24:41,047 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-06 04:24:41,073 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-06 04:24:41,077 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:24:41,077 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:24:41,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:24:41,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:24:41,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583052917] [2025-02-06 04:24:41,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583052917] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:24:41,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:24:41,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-06 04:24:41,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454137246] [2025-02-06 04:24:41,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:24:41,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 04:24:41,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:24:41,279 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 04:24:41,280 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-06 04:24:41,288 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2025-02-06 04:24:41,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 38 transitions, 158 flow. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 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) [2025-02-06 04:24:41,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:24:41,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2025-02-06 04:24:41,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:24:41,708 INFO L124 PetriNetUnfolderBase]: 2183/3394 cut-off events. [2025-02-06 04:24:41,709 INFO L125 PetriNetUnfolderBase]: For 2840/2840 co-relation queries the response was YES. [2025-02-06 04:24:41,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8859 conditions, 3394 events. 2183/3394 cut-off events. For 2840/2840 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 16926 event pairs, 534 based on Foata normal form. 16/3407 useless extension candidates. Maximal degree in co-relation 8844. Up to 1286 conditions per place. [2025-02-06 04:24:41,722 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 62 selfloop transitions, 7 changer transitions 60/133 dead transitions. [2025-02-06 04:24:41,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 133 transitions, 808 flow [2025-02-06 04:24:41,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 04:24:41,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 04:24:41,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2025-02-06 04:24:41,726 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49736842105263157 [2025-02-06 04:24:41,726 INFO L175 Difference]: Start difference. First operand has 51 places, 38 transitions, 158 flow. Second operand 10 states and 189 transitions. [2025-02-06 04:24:41,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 133 transitions, 808 flow [2025-02-06 04:24:41,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 133 transitions, 614 flow, removed 30 selfloop flow, removed 8 redundant places. [2025-02-06 04:24:41,741 INFO L231 Difference]: Finished difference. Result has 58 places, 41 transitions, 143 flow [2025-02-06 04:24:41,741 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=143, PETRI_PLACES=58, PETRI_TRANSITIONS=41} [2025-02-06 04:24:41,742 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 16 predicate places. [2025-02-06 04:24:41,742 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 41 transitions, 143 flow [2025-02-06 04:24:41,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 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) [2025-02-06 04:24:41,743 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:24:41,743 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] [2025-02-06 04:24:41,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 04:24:41,743 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:24:41,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:24:41,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1364396177, now seen corresponding path program 2 times [2025-02-06 04:24:41,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:24:41,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095971518] [2025-02-06 04:24:41,745 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:24:41,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:24:41,755 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 29 statements into 1 equivalence classes. [2025-02-06 04:24:41,765 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-06 04:24:41,765 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 04:24:41,765 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:24:41,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:24:41,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:24:41,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095971518] [2025-02-06 04:24:41,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095971518] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:24:41,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:24:41,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 04:24:41,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553701133] [2025-02-06 04:24:41,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:24:41,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 04:24:41,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:24:41,880 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 04:24:41,880 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 04:24:41,885 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2025-02-06 04:24:41,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 41 transitions, 143 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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) [2025-02-06 04:24:41,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:24:41,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2025-02-06 04:24:41,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:24:42,192 INFO L124 PetriNetUnfolderBase]: 2335/3639 cut-off events. [2025-02-06 04:24:42,193 INFO L125 PetriNetUnfolderBase]: For 1018/1020 co-relation queries the response was YES. [2025-02-06 04:24:42,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8846 conditions, 3639 events. 2335/3639 cut-off events. For 1018/1020 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 18013 event pairs, 609 based on Foata normal form. 8/3641 useless extension candidates. Maximal degree in co-relation 8829. Up to 1464 conditions per place. [2025-02-06 04:24:42,203 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 36 selfloop transitions, 3 changer transitions 43/86 dead transitions. [2025-02-06 04:24:42,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 86 transitions, 454 flow [2025-02-06 04:24:42,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 04:24:42,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 04:24:42,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 112 transitions. [2025-02-06 04:24:42,204 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49122807017543857 [2025-02-06 04:24:42,204 INFO L175 Difference]: Start difference. First operand has 58 places, 41 transitions, 143 flow. Second operand 6 states and 112 transitions. [2025-02-06 04:24:42,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 86 transitions, 454 flow [2025-02-06 04:24:42,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 86 transitions, 429 flow, removed 8 selfloop flow, removed 6 redundant places. [2025-02-06 04:24:42,207 INFO L231 Difference]: Finished difference. Result has 54 places, 38 transitions, 132 flow [2025-02-06 04:24:42,207 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=132, PETRI_PLACES=54, PETRI_TRANSITIONS=38} [2025-02-06 04:24:42,208 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 12 predicate places. [2025-02-06 04:24:42,208 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 38 transitions, 132 flow [2025-02-06 04:24:42,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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) [2025-02-06 04:24:42,208 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:24:42,208 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] [2025-02-06 04:24:42,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 04:24:42,208 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:24:42,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:24:42,209 INFO L85 PathProgramCache]: Analyzing trace with hash 73367937, now seen corresponding path program 3 times [2025-02-06 04:24:42,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:24:42,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127417019] [2025-02-06 04:24:42,209 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 04:24:42,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:24:42,220 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 29 statements into 1 equivalence classes. [2025-02-06 04:24:42,225 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-06 04:24:42,226 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-02-06 04:24:42,226 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:24:42,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:24:42,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:24:42,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127417019] [2025-02-06 04:24:42,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127417019] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:24:42,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:24:42,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 04:24:42,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054438400] [2025-02-06 04:24:42,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:24:42,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 04:24:42,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:24:42,338 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 04:24:42,338 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 04:24:42,343 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 38 [2025-02-06 04:24:42,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 38 transitions, 132 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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) [2025-02-06 04:24:42,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:24:42,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 38 [2025-02-06 04:24:42,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:24:42,473 INFO L124 PetriNetUnfolderBase]: 450/730 cut-off events. [2025-02-06 04:24:42,474 INFO L125 PetriNetUnfolderBase]: For 156/156 co-relation queries the response was YES. [2025-02-06 04:24:42,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1754 conditions, 730 events. 450/730 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2626 event pairs, 119 based on Foata normal form. 8/738 useless extension candidates. Maximal degree in co-relation 1746. Up to 575 conditions per place. [2025-02-06 04:24:42,475 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 0 selfloop transitions, 0 changer transitions 53/53 dead transitions. [2025-02-06 04:24:42,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 53 transitions, 270 flow [2025-02-06 04:24:42,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 04:24:42,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 04:24:42,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 91 transitions. [2025-02-06 04:24:42,476 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3991228070175439 [2025-02-06 04:24:42,477 INFO L175 Difference]: Start difference. First operand has 54 places, 38 transitions, 132 flow. Second operand 6 states and 91 transitions. [2025-02-06 04:24:42,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 53 transitions, 270 flow [2025-02-06 04:24:42,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 53 transitions, 248 flow, removed 4 selfloop flow, removed 6 redundant places. [2025-02-06 04:24:42,478 INFO L231 Difference]: Finished difference. Result has 49 places, 0 transitions, 0 flow [2025-02-06 04:24:42,478 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=49, PETRI_TRANSITIONS=0} [2025-02-06 04:24:42,478 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 7 predicate places. [2025-02-06 04:24:42,478 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 0 transitions, 0 flow [2025-02-06 04:24:42,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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) [2025-02-06 04:24:42,480 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2025-02-06 04:24:42,481 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2025-02-06 04:24:42,481 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2025-02-06 04:24:42,481 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2025-02-06 04:24:42,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-06 04:24:42,481 INFO L422 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1] [2025-02-06 04:24:42,484 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-02-06 04:24:42,484 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-06 04:24:42,487 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.02 04:24:42 BasicIcfg [2025-02-06 04:24:42,487 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-06 04:24:42,488 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-06 04:24:42,488 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-06 04:24:42,488 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-06 04:24:42,488 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:24:38" (3/4) ... [2025-02-06 04:24:42,490 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-02-06 04:24:42,492 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P0 [2025-02-06 04:24:42,492 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P1 [2025-02-06 04:24:42,492 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P2 [2025-02-06 04:24:42,494 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 28 nodes and edges [2025-02-06 04:24:42,494 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2025-02-06 04:24:42,494 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2025-02-06 04:24:42,495 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2025-02-06 04:24:42,542 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-06 04:24:42,543 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-06 04:24:42,543 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-06 04:24:42,544 INFO L158 Benchmark]: Toolchain (without parser) took 4296.14ms. Allocated memory was 201.3MB in the beginning and 394.3MB in the end (delta: 192.9MB). Free memory was 159.2MB in the beginning and 114.7MB in the end (delta: 44.5MB). Peak memory consumption was 236.1MB. Max. memory is 16.1GB. [2025-02-06 04:24:42,544 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 201.3MB. Free memory is still 116.5MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 04:24:42,544 INFO L158 Benchmark]: CACSL2BoogieTranslator took 345.80ms. Allocated memory is still 201.3MB. Free memory was 158.8MB in the beginning and 138.8MB in the end (delta: 20.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-06 04:24:42,545 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.71ms. Allocated memory is still 201.3MB. Free memory was 138.8MB in the beginning and 137.0MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-06 04:24:42,545 INFO L158 Benchmark]: Boogie Preprocessor took 25.50ms. Allocated memory is still 201.3MB. Free memory was 137.0MB in the beginning and 135.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 04:24:42,545 INFO L158 Benchmark]: IcfgBuilder took 321.17ms. Allocated memory is still 201.3MB. Free memory was 135.5MB in the beginning and 116.2MB in the end (delta: 19.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-06 04:24:42,545 INFO L158 Benchmark]: TraceAbstraction took 3509.90ms. Allocated memory was 201.3MB in the beginning and 394.3MB in the end (delta: 192.9MB). Free memory was 115.4MB in the beginning and 119.8MB in the end (delta: -4.3MB). Peak memory consumption was 185.8MB. Max. memory is 16.1GB. [2025-02-06 04:24:42,545 INFO L158 Benchmark]: Witness Printer took 55.06ms. Allocated memory is still 394.3MB. Free memory was 119.8MB in the beginning and 114.7MB in the end (delta: 5.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-06 04:24:42,546 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 116.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 345.80ms. Allocated memory is still 201.3MB. Free memory was 158.8MB in the beginning and 138.8MB in the end (delta: 20.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.71ms. Allocated memory is still 201.3MB. Free memory was 138.8MB in the beginning and 137.0MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.50ms. Allocated memory is still 201.3MB. Free memory was 137.0MB in the beginning and 135.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 321.17ms. Allocated memory is still 201.3MB. Free memory was 135.5MB in the beginning and 116.2MB in the end (delta: 19.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 3509.90ms. Allocated memory was 201.3MB in the beginning and 394.3MB in the end (delta: 192.9MB). Free memory was 115.4MB in the beginning and 119.8MB in the end (delta: -4.3MB). Peak memory consumption was 185.8MB. Max. memory is 16.1GB. * Witness Printer took 55.06ms. Allocated memory is still 394.3MB. Free memory was 119.8MB in the beginning and 114.7MB in the end (delta: 5.0MB). 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 7 procedures, 62 locations, 4 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: 3.4s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 370 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 363 mSDsluCounter, 44 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 41 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 894 IncrementalHoareTripleChecker+Invalid, 907 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 3 mSDtfsCounter, 894 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=158occurred in iteration=3, InterpolantAutomatonStates: 37, 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, 0.9s InterpolantComputationTime, 144 NumberOfCodeBlocks, 144 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 138 ConstructedInterpolants, 0 QuantifiedInterpolants, 572 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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! [2025-02-06 04:24:42,563 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/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