./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe021_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 48c9605d 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/safe021_tso.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 09edf41151ee2be1e615b82a5ff75107fc67a0fb206ce4e8ba7b647488d110c1 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 01:05:24,169 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 01:05:24,222 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-08 01:05:24,226 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 01:05:24,226 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 01:05:24,244 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 01:05:24,245 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 01:05:24,245 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 01:05:24,245 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 01:05:24,245 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 01:05:24,246 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 01:05:24,246 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 01:05:24,246 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 01:05:24,246 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 01:05:24,246 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 01:05:24,246 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 01:05:24,246 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-08 01:05:24,246 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 01:05:24,247 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 01:05:24,247 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 01:05:24,247 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 01:05:24,247 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-08 01:05:24,247 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 01:05:24,247 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-08 01:05:24,247 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 01:05:24,247 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-08 01:05:24,247 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 01:05:24,247 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 01:05:24,247 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 01:05:24,248 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 01:05:24,248 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 01:05:24,248 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 01:05:24,248 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:05:24,248 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 01:05:24,248 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 01:05:24,248 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-08 01:05:24,248 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-08 01:05:24,248 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 01:05:24,248 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 01:05:24,248 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 01:05:24,248 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 01:05:24,249 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 01:05:24,249 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 01:05:24,249 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 -> 09edf41151ee2be1e615b82a5ff75107fc67a0fb206ce4e8ba7b647488d110c1 [2025-02-08 01:05:24,457 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 01:05:24,464 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 01:05:24,465 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 01:05:24,467 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 01:05:24,467 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 01:05:24,469 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe021_tso.i [2025-02-08 01:05:25,573 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7bc22688e/4d628745147d4e47a0a82515d60f4c44/FLAGf601876a2 [2025-02-08 01:05:25,838 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 01:05:25,839 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe021_tso.i [2025-02-08 01:05:25,849 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7bc22688e/4d628745147d4e47a0a82515d60f4c44/FLAGf601876a2 [2025-02-08 01:05:26,145 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/7bc22688e/4d628745147d4e47a0a82515d60f4c44 [2025-02-08 01:05:26,148 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 01:05:26,149 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 01:05:26,150 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 01:05:26,150 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 01:05:26,154 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 01:05:26,155 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:05:26" (1/1) ... [2025-02-08 01:05:26,158 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14894776 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:05:26, skipping insertion in model container [2025-02-08 01:05:26,158 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 01:05:26" (1/1) ... [2025-02-08 01:05:26,189 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 01:05:26,312 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/safe021_tso.i[945,958] [2025-02-08 01:05:26,454 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:05:26,463 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 01:05:26,473 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/safe021_tso.i[945,958] [2025-02-08 01:05:26,505 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 01:05:26,537 INFO L204 MainTranslator]: Completed translation [2025-02-08 01:05:26,539 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:05:26 WrapperNode [2025-02-08 01:05:26,539 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 01:05:26,540 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 01:05:26,540 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 01:05:26,540 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 01:05:26,545 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:05:26" (1/1) ... [2025-02-08 01:05:26,558 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:05:26" (1/1) ... [2025-02-08 01:05:26,577 INFO L138 Inliner]: procedures = 175, calls = 41, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 58 [2025-02-08 01:05:26,578 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 01:05:26,579 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 01:05:26,579 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 01:05:26,579 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 01:05:26,586 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:05:26" (1/1) ... [2025-02-08 01:05:26,586 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:05:26" (1/1) ... [2025-02-08 01:05:26,587 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:05:26" (1/1) ... [2025-02-08 01:05:26,600 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]. [2025-02-08 01:05:26,601 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:05:26" (1/1) ... [2025-02-08 01:05:26,601 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:05:26" (1/1) ... [2025-02-08 01:05:26,604 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:05:26" (1/1) ... [2025-02-08 01:05:26,605 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:05:26" (1/1) ... [2025-02-08 01:05:26,606 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:05:26" (1/1) ... [2025-02-08 01:05:26,606 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:05:26" (1/1) ... [2025-02-08 01:05:26,607 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 01:05:26,608 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 01:05:26,609 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 01:05:26,609 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 01:05:26,609 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:05:26" (1/1) ... [2025-02-08 01:05:26,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 01:05:26,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 01:05:26,632 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) [2025-02-08 01:05:26,634 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 [2025-02-08 01:05:26,653 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-08 01:05:26,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 01:05:26,653 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-02-08 01:05:26,653 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-02-08 01:05:26,653 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-02-08 01:05:26,653 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-02-08 01:05:26,653 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-02-08 01:05:26,653 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-02-08 01:05:26,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 01:05:26,654 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-08 01:05:26,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 01:05:26,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 01:05:26,655 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-08 01:05:26,739 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 01:05:26,741 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 01:05:26,858 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-08 01:05:26,858 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 01:05:26,917 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 01:05:26,917 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 01:05:26,917 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:05:26 BoogieIcfgContainer [2025-02-08 01:05:26,917 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 01:05:26,919 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 01:05:26,919 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 01:05:26,922 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 01:05:26,923 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 01:05:26" (1/3) ... [2025-02-08 01:05:26,923 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67fc16e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:05:26, skipping insertion in model container [2025-02-08 01:05:26,923 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 01:05:26" (2/3) ... [2025-02-08 01:05:26,923 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67fc16e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 01:05:26, skipping insertion in model container [2025-02-08 01:05:26,923 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:05:26" (3/3) ... [2025-02-08 01:05:26,924 INFO L128 eAbstractionObserver]: Analyzing ICFG safe021_tso.i [2025-02-08 01:05:26,935 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 01:05:26,936 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG safe021_tso.i that has 4 procedures, 38 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-02-08 01:05:26,937 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-08 01:05:26,967 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-08 01:05:26,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 38 transitions, 88 flow [2025-02-08 01:05:27,019 INFO L124 PetriNetUnfolderBase]: 1/35 cut-off events. [2025-02-08 01:05:27,021 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 01:05:27,024 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. [2025-02-08 01:05:27,025 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 38 transitions, 88 flow [2025-02-08 01:05:27,027 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 32 transitions, 73 flow [2025-02-08 01:05:27,036 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 01:05:27,050 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;@3aa83e16, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 01:05:27,051 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-02-08 01:05:27,061 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-08 01:05:27,061 INFO L124 PetriNetUnfolderBase]: 0/31 cut-off events. [2025-02-08 01:05:27,061 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-08 01:05:27,061 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:05:27,062 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:05:27,062 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-08 01:05:27,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:05:27,066 INFO L85 PathProgramCache]: Analyzing trace with hash -101451644, now seen corresponding path program 1 times [2025-02-08 01:05:27,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:05:27,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658906347] [2025-02-08 01:05:27,072 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:05:27,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:05:27,147 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-08 01:05:27,179 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 01:05:27,180 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:05:27,180 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:05:27,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:05:27,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:05:27,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658906347] [2025-02-08 01:05:27,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658906347] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:05:27,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:05:27,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 01:05:27,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388809339] [2025-02-08 01:05:27,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:05:27,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:05:27,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:05:27,559 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:05:27,559 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:05:27,568 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2025-02-08 01:05:27,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 73 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 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) [2025-02-08 01:05:27,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:05:27,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2025-02-08 01:05:27,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:05:28,566 INFO L124 PetriNetUnfolderBase]: 8206/12100 cut-off events. [2025-02-08 01:05:28,566 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2025-02-08 01:05:28,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24104 conditions, 12100 events. 8206/12100 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 71888 event pairs, 2314 based on Foata normal form. 356/12433 useless extension candidates. Maximal degree in co-relation 24093. Up to 6107 conditions per place. [2025-02-08 01:05:28,623 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 46 selfloop transitions, 5 changer transitions 63/118 dead transitions. [2025-02-08 01:05:28,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 118 transitions, 476 flow [2025-02-08 01:05:28,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 01:05:28,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-08 01:05:28,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 165 transitions. [2025-02-08 01:05:28,639 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6203007518796992 [2025-02-08 01:05:28,640 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 73 flow. Second operand 7 states and 165 transitions. [2025-02-08 01:05:28,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 118 transitions, 476 flow [2025-02-08 01:05:28,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 118 transitions, 472 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-08 01:05:28,653 INFO L231 Difference]: Finished difference. Result has 51 places, 36 transitions, 132 flow [2025-02-08 01:05:28,655 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=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=132, PETRI_PLACES=51, PETRI_TRANSITIONS=36} [2025-02-08 01:05:28,659 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 9 predicate places. [2025-02-08 01:05:28,659 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 36 transitions, 132 flow [2025-02-08 01:05:28,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 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) [2025-02-08 01:05:28,659 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:05:28,659 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:05:28,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 01:05:28,659 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)] === [2025-02-08 01:05:28,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:05:28,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1865447227, now seen corresponding path program 1 times [2025-02-08 01:05:28,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:05:28,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513778187] [2025-02-08 01:05:28,660 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:05:28,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:05:28,679 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 01:05:28,688 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 01:05:28,689 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:05:28,689 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:05:28,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:05:28,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:05:28,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513778187] [2025-02-08 01:05:28,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513778187] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:05:28,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:05:28,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:05:28,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219658235] [2025-02-08 01:05:28,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:05:28,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 01:05:28,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:05:28,889 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 01:05:28,890 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-08 01:05:28,891 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2025-02-08 01:05:28,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 36 transitions, 132 flow. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 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) [2025-02-08 01:05:28,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:05:28,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2025-02-08 01:05:28,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:05:29,794 INFO L124 PetriNetUnfolderBase]: 7482/11076 cut-off events. [2025-02-08 01:05:29,795 INFO L125 PetriNetUnfolderBase]: For 7146/7149 co-relation queries the response was YES. [2025-02-08 01:05:29,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28408 conditions, 11076 events. 7482/11076 cut-off events. For 7146/7149 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 63262 event pairs, 1024 based on Foata normal form. 300/11366 useless extension candidates. Maximal degree in co-relation 28392. Up to 5205 conditions per place. [2025-02-08 01:05:29,859 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 56 selfloop transitions, 6 changer transitions 74/140 dead transitions. [2025-02-08 01:05:29,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 140 transitions, 698 flow [2025-02-08 01:05:29,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 01:05:29,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-08 01:05:29,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 205 transitions. [2025-02-08 01:05:29,863 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5394736842105263 [2025-02-08 01:05:29,863 INFO L175 Difference]: Start difference. First operand has 51 places, 36 transitions, 132 flow. Second operand 10 states and 205 transitions. [2025-02-08 01:05:29,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 140 transitions, 698 flow [2025-02-08 01:05:29,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 140 transitions, 648 flow, removed 10 selfloop flow, removed 2 redundant places. [2025-02-08 01:05:29,913 INFO L231 Difference]: Finished difference. Result has 63 places, 38 transitions, 170 flow [2025-02-08 01:05:29,913 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=170, PETRI_PLACES=63, PETRI_TRANSITIONS=38} [2025-02-08 01:05:29,914 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 21 predicate places. [2025-02-08 01:05:29,914 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 38 transitions, 170 flow [2025-02-08 01:05:29,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 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) [2025-02-08 01:05:29,914 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:05:29,914 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:05:29,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 01:05:29,914 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)] === [2025-02-08 01:05:29,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:05:29,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1688131195, now seen corresponding path program 1 times [2025-02-08 01:05:29,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:05:29,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775311712] [2025-02-08 01:05:29,916 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:05:29,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:05:29,925 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 01:05:29,934 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 01:05:29,934 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:05:29,934 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:05:30,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:05:30,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:05:30,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775311712] [2025-02-08 01:05:30,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775311712] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:05:30,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:05:30,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:05:30,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810637617] [2025-02-08 01:05:30,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:05:30,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 01:05:30,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:05:30,050 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 01:05:30,050 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-08 01:05:30,055 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2025-02-08 01:05:30,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 38 transitions, 170 flow. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 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) [2025-02-08 01:05:30,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:05:30,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2025-02-08 01:05:30,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:05:30,976 INFO L124 PetriNetUnfolderBase]: 7901/11573 cut-off events. [2025-02-08 01:05:30,976 INFO L125 PetriNetUnfolderBase]: For 20638/20641 co-relation queries the response was YES. [2025-02-08 01:05:31,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33251 conditions, 11573 events. 7901/11573 cut-off events. For 20638/20641 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 67319 event pairs, 564 based on Foata normal form. 330/11892 useless extension candidates. Maximal degree in co-relation 33226. Up to 4081 conditions per place. [2025-02-08 01:05:31,035 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 79 selfloop transitions, 16 changer transitions 104/203 dead transitions. [2025-02-08 01:05:31,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 203 transitions, 1222 flow [2025-02-08 01:05:31,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-08 01:05:31,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-02-08 01:05:31,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 281 transitions. [2025-02-08 01:05:31,038 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5688259109311741 [2025-02-08 01:05:31,038 INFO L175 Difference]: Start difference. First operand has 63 places, 38 transitions, 170 flow. Second operand 13 states and 281 transitions. [2025-02-08 01:05:31,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 203 transitions, 1222 flow [2025-02-08 01:05:31,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 203 transitions, 1137 flow, removed 40 selfloop flow, removed 7 redundant places. [2025-02-08 01:05:31,124 INFO L231 Difference]: Finished difference. Result has 74 places, 48 transitions, 341 flow [2025-02-08 01:05:31,124 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=341, PETRI_PLACES=74, PETRI_TRANSITIONS=48} [2025-02-08 01:05:31,125 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 32 predicate places. [2025-02-08 01:05:31,126 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 48 transitions, 341 flow [2025-02-08 01:05:31,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 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) [2025-02-08 01:05:31,126 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:05:31,126 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:05:31,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 01:05:31,126 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)] === [2025-02-08 01:05:31,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:05:31,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1293426673, now seen corresponding path program 1 times [2025-02-08 01:05:31,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:05:31,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096407516] [2025-02-08 01:05:31,128 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:05:31,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:05:31,135 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-08 01:05:31,140 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-08 01:05:31,141 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:05:31,141 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:05:31,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:05:31,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:05:31,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096407516] [2025-02-08 01:05:31,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096407516] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:05:31,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:05:31,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 01:05:31,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729674612] [2025-02-08 01:05:31,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:05:31,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 01:05:31,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:05:31,249 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 01:05:31,249 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-02-08 01:05:31,251 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2025-02-08 01:05:31,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 48 transitions, 341 flow. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 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) [2025-02-08 01:05:31,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:05:31,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2025-02-08 01:05:31,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:05:32,232 INFO L124 PetriNetUnfolderBase]: 9355/13719 cut-off events. [2025-02-08 01:05:32,232 INFO L125 PetriNetUnfolderBase]: For 45933/45936 co-relation queries the response was YES. [2025-02-08 01:05:32,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44465 conditions, 13719 events. 9355/13719 cut-off events. For 45933/45936 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 80514 event pairs, 1261 based on Foata normal form. 290/13999 useless extension candidates. Maximal degree in co-relation 44433. Up to 4580 conditions per place. [2025-02-08 01:05:32,358 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 63 selfloop transitions, 7 changer transitions 79/153 dead transitions. [2025-02-08 01:05:32,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 153 transitions, 1193 flow [2025-02-08 01:05:32,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 01:05:32,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-02-08 01:05:32,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 191 transitions. [2025-02-08 01:05:32,360 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5584795321637427 [2025-02-08 01:05:32,360 INFO L175 Difference]: Start difference. First operand has 74 places, 48 transitions, 341 flow. Second operand 9 states and 191 transitions. [2025-02-08 01:05:32,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 153 transitions, 1193 flow [2025-02-08 01:05:32,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 153 transitions, 1057 flow, removed 68 selfloop flow, removed 8 redundant places. [2025-02-08 01:05:32,533 INFO L231 Difference]: Finished difference. Result has 72 places, 38 transitions, 216 flow [2025-02-08 01:05:32,533 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=216, PETRI_PLACES=72, PETRI_TRANSITIONS=38} [2025-02-08 01:05:32,533 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 30 predicate places. [2025-02-08 01:05:32,534 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 38 transitions, 216 flow [2025-02-08 01:05:32,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 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) [2025-02-08 01:05:32,534 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:05:32,534 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:05:32,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 01:05:32,534 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)] === [2025-02-08 01:05:32,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:05:32,535 INFO L85 PathProgramCache]: Analyzing trace with hash 108941876, now seen corresponding path program 1 times [2025-02-08 01:05:32,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:05:32,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618693343] [2025-02-08 01:05:32,535 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:05:32,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:05:32,540 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-08 01:05:32,546 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-08 01:05:32,546 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:05:32,546 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:05:32,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:05:32,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:05:32,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618693343] [2025-02-08 01:05:32,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618693343] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:05:32,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:05:32,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 01:05:32,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442547936] [2025-02-08 01:05:32,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:05:32,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 01:05:32,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:05:32,612 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 01:05:32,612 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 01:05:32,612 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2025-02-08 01:05:32,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 38 transitions, 216 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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) [2025-02-08 01:05:32,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:05:32,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2025-02-08 01:05:32,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:05:32,918 INFO L124 PetriNetUnfolderBase]: 3477/5581 cut-off events. [2025-02-08 01:05:32,918 INFO L125 PetriNetUnfolderBase]: For 12419/12422 co-relation queries the response was YES. [2025-02-08 01:05:32,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16540 conditions, 5581 events. 3477/5581 cut-off events. For 12419/12422 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 32294 event pairs, 548 based on Foata normal form. 256/5834 useless extension candidates. Maximal degree in co-relation 16519. Up to 2834 conditions per place. [2025-02-08 01:05:32,956 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 68 selfloop transitions, 5 changer transitions 1/79 dead transitions. [2025-02-08 01:05:32,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 79 transitions, 626 flow [2025-02-08 01:05:32,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 01:05:32,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-08 01:05:32,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2025-02-08 01:05:32,958 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6447368421052632 [2025-02-08 01:05:32,958 INFO L175 Difference]: Start difference. First operand has 72 places, 38 transitions, 216 flow. Second operand 4 states and 98 transitions. [2025-02-08 01:05:32,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 79 transitions, 626 flow [2025-02-08 01:05:32,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 79 transitions, 487 flow, removed 21 selfloop flow, removed 14 redundant places. [2025-02-08 01:05:32,978 INFO L231 Difference]: Finished difference. Result has 59 places, 41 transitions, 187 flow [2025-02-08 01:05:32,978 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=187, PETRI_PLACES=59, PETRI_TRANSITIONS=41} [2025-02-08 01:05:32,979 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 17 predicate places. [2025-02-08 01:05:32,980 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 41 transitions, 187 flow [2025-02-08 01:05:32,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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) [2025-02-08 01:05:32,981 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:05:32,981 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] [2025-02-08 01:05:32,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 01:05:32,981 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)] === [2025-02-08 01:05:32,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:05:32,981 INFO L85 PathProgramCache]: Analyzing trace with hash -2087065657, now seen corresponding path program 1 times [2025-02-08 01:05:32,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:05:32,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402633856] [2025-02-08 01:05:32,981 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:05:32,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:05:32,990 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-08 01:05:32,995 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-08 01:05:32,996 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:05:32,996 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:05:33,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:05:33,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:05:33,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402633856] [2025-02-08 01:05:33,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402633856] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:05:33,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:05:33,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 01:05:33,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708422519] [2025-02-08 01:05:33,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:05:33,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 01:05:33,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:05:33,067 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 01:05:33,069 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 01:05:33,069 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2025-02-08 01:05:33,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 41 transitions, 187 flow. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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) [2025-02-08 01:05:33,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:05:33,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2025-02-08 01:05:33,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:05:33,269 INFO L124 PetriNetUnfolderBase]: 2204/3536 cut-off events. [2025-02-08 01:05:33,269 INFO L125 PetriNetUnfolderBase]: For 3493/3496 co-relation queries the response was YES. [2025-02-08 01:05:33,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9946 conditions, 3536 events. 2204/3536 cut-off events. For 3493/3496 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 18201 event pairs, 300 based on Foata normal form. 198/3731 useless extension candidates. Maximal degree in co-relation 9933. Up to 1101 conditions per place. [2025-02-08 01:05:33,284 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 78 selfloop transitions, 8 changer transitions 2/93 dead transitions. [2025-02-08 01:05:33,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 93 transitions, 606 flow [2025-02-08 01:05:33,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 01:05:33,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-08 01:05:33,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2025-02-08 01:05:33,285 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6368421052631579 [2025-02-08 01:05:33,285 INFO L175 Difference]: Start difference. First operand has 59 places, 41 transitions, 187 flow. Second operand 5 states and 121 transitions. [2025-02-08 01:05:33,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 93 transitions, 606 flow [2025-02-08 01:05:33,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 93 transitions, 596 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-02-08 01:05:33,289 INFO L231 Difference]: Finished difference. Result has 63 places, 44 transitions, 227 flow [2025-02-08 01:05:33,289 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=227, PETRI_PLACES=63, PETRI_TRANSITIONS=44} [2025-02-08 01:05:33,290 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 21 predicate places. [2025-02-08 01:05:33,290 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 44 transitions, 227 flow [2025-02-08 01:05:33,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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) [2025-02-08 01:05:33,291 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:05:33,291 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] [2025-02-08 01:05:33,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-08 01:05:33,291 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 1 more)] === [2025-02-08 01:05:33,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:05:33,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1436970422, now seen corresponding path program 1 times [2025-02-08 01:05:33,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:05:33,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654766119] [2025-02-08 01:05:33,291 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:05:33,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:05:33,297 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-08 01:05:33,306 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-08 01:05:33,306 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:05:33,306 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:05:33,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:05:33,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:05:33,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654766119] [2025-02-08 01:05:33,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654766119] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:05:33,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:05:33,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 01:05:33,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937785804] [2025-02-08 01:05:33,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:05:33,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 01:05:33,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:05:33,393 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 01:05:33,393 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-02-08 01:05:33,393 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2025-02-08 01:05:33,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 44 transitions, 227 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) [2025-02-08 01:05:33,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:05:33,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2025-02-08 01:05:33,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:05:33,576 INFO L124 PetriNetUnfolderBase]: 1387/2201 cut-off events. [2025-02-08 01:05:33,576 INFO L125 PetriNetUnfolderBase]: For 3290/3293 co-relation queries the response was YES. [2025-02-08 01:05:33,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6746 conditions, 2201 events. 1387/2201 cut-off events. For 3290/3293 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 10092 event pairs, 241 based on Foata normal form. 88/2286 useless extension candidates. Maximal degree in co-relation 6732. Up to 762 conditions per place. [2025-02-08 01:05:33,586 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 66 selfloop transitions, 11 changer transitions 3/85 dead transitions. [2025-02-08 01:05:33,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 85 transitions, 563 flow [2025-02-08 01:05:33,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 01:05:33,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 01:05:33,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 124 transitions. [2025-02-08 01:05:33,588 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.543859649122807 [2025-02-08 01:05:33,588 INFO L175 Difference]: Start difference. First operand has 63 places, 44 transitions, 227 flow. Second operand 6 states and 124 transitions. [2025-02-08 01:05:33,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 85 transitions, 563 flow [2025-02-08 01:05:33,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 85 transitions, 513 flow, removed 13 selfloop flow, removed 7 redundant places. [2025-02-08 01:05:33,598 INFO L231 Difference]: Finished difference. Result has 63 places, 44 transitions, 228 flow [2025-02-08 01:05:33,598 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=228, PETRI_PLACES=63, PETRI_TRANSITIONS=44} [2025-02-08 01:05:33,599 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 21 predicate places. [2025-02-08 01:05:33,599 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 44 transitions, 228 flow [2025-02-08 01:05:33,599 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) [2025-02-08 01:05:33,599 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-08 01:05:33,600 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] [2025-02-08 01:05:33,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-08 01:05:33,600 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 1 more)] === [2025-02-08 01:05:33,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 01:05:33,600 INFO L85 PathProgramCache]: Analyzing trace with hash -668109638, now seen corresponding path program 1 times [2025-02-08 01:05:33,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 01:05:33,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905912008] [2025-02-08 01:05:33,600 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 01:05:33,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 01:05:33,607 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-08 01:05:33,614 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-08 01:05:33,614 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 01:05:33,614 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 01:05:33,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 01:05:33,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 01:05:33,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905912008] [2025-02-08 01:05:33,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905912008] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 01:05:33,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 01:05:33,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 01:05:33,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006374000] [2025-02-08 01:05:33,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 01:05:33,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 01:05:33,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 01:05:33,713 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 01:05:33,713 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-08 01:05:33,715 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2025-02-08 01:05:33,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 44 transitions, 228 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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) [2025-02-08 01:05:33,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-08 01:05:33,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2025-02-08 01:05:33,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-08 01:05:33,934 INFO L124 PetriNetUnfolderBase]: 1559/2448 cut-off events. [2025-02-08 01:05:33,934 INFO L125 PetriNetUnfolderBase]: For 3439/3439 co-relation queries the response was YES. [2025-02-08 01:05:33,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7447 conditions, 2448 events. 1559/2448 cut-off events. For 3439/3439 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 11252 event pairs, 353 based on Foata normal form. 8/2455 useless extension candidates. Maximal degree in co-relation 7435. Up to 1280 conditions per place. [2025-02-08 01:05:33,940 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 0 selfloop transitions, 0 changer transitions 85/85 dead transitions. [2025-02-08 01:05:33,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 85 transitions, 595 flow [2025-02-08 01:05:33,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 01:05:33,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-08 01:05:33,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2025-02-08 01:05:33,942 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4605263157894737 [2025-02-08 01:05:33,942 INFO L175 Difference]: Start difference. First operand has 63 places, 44 transitions, 228 flow. Second operand 6 states and 105 transitions. [2025-02-08 01:05:33,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 85 transitions, 595 flow [2025-02-08 01:05:33,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 85 transitions, 470 flow, removed 20 selfloop flow, removed 8 redundant places. [2025-02-08 01:05:33,950 INFO L231 Difference]: Finished difference. Result has 58 places, 0 transitions, 0 flow [2025-02-08 01:05:33,951 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=58, PETRI_TRANSITIONS=0} [2025-02-08 01:05:33,953 INFO L279 CegarLoopForPetriNet]: 42 programPoint places, 16 predicate places. [2025-02-08 01:05:33,954 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 0 transitions, 0 flow [2025-02-08 01:05:33,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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) [2025-02-08 01:05:33,956 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2025-02-08 01:05:33,956 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2025-02-08 01:05:33,956 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2025-02-08 01:05:33,956 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2025-02-08 01:05:33,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-08 01:05:33,957 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 01:05:33,962 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-02-08 01:05:33,962 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-08 01:05:33,966 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.02 01:05:33 BasicIcfg [2025-02-08 01:05:33,966 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-08 01:05:33,966 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-08 01:05:33,966 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-08 01:05:33,966 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-08 01:05:33,967 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 01:05:26" (3/4) ... [2025-02-08 01:05:33,968 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-02-08 01:05:33,970 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P0 [2025-02-08 01:05:33,971 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P1 [2025-02-08 01:05:33,971 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P2 [2025-02-08 01:05:33,973 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 28 nodes and edges [2025-02-08 01:05:33,973 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2025-02-08 01:05:33,973 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2025-02-08 01:05:33,973 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2025-02-08 01:05:34,028 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-08 01:05:34,028 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-08 01:05:34,028 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-08 01:05:34,029 INFO L158 Benchmark]: Toolchain (without parser) took 7879.85ms. Allocated memory was 167.8MB in the beginning and 838.9MB in the end (delta: 671.1MB). Free memory was 123.0MB in the beginning and 172.1MB in the end (delta: -49.1MB). Peak memory consumption was 621.5MB. Max. memory is 16.1GB. [2025-02-08 01:05:34,029 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 201.3MB. Free memory is still 116.4MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 01:05:34,029 INFO L158 Benchmark]: CACSL2BoogieTranslator took 389.35ms. Allocated memory is still 167.8MB. Free memory was 121.9MB in the beginning and 102.5MB in the end (delta: 19.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-08 01:05:34,029 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.56ms. Allocated memory is still 167.8MB. Free memory was 102.5MB in the beginning and 100.7MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 01:05:34,029 INFO L158 Benchmark]: Boogie Preprocessor took 28.44ms. Allocated memory is still 167.8MB. Free memory was 100.7MB in the beginning and 99.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 01:05:34,029 INFO L158 Benchmark]: IcfgBuilder took 309.10ms. Allocated memory is still 167.8MB. Free memory was 99.5MB in the beginning and 79.5MB in the end (delta: 20.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-08 01:05:34,030 INFO L158 Benchmark]: TraceAbstraction took 7046.75ms. Allocated memory was 167.8MB in the beginning and 838.9MB in the end (delta: 671.1MB). Free memory was 78.4MB in the beginning and 176.5MB in the end (delta: -98.1MB). Peak memory consumption was 571.1MB. Max. memory is 16.1GB. [2025-02-08 01:05:34,030 INFO L158 Benchmark]: Witness Printer took 61.91ms. Allocated memory is still 838.9MB. Free memory was 176.5MB in the beginning and 172.1MB in the end (delta: 4.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 01:05:34,031 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 201.3MB. Free memory is still 116.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 389.35ms. Allocated memory is still 167.8MB. Free memory was 121.9MB in the beginning and 102.5MB in the end (delta: 19.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.56ms. Allocated memory is still 167.8MB. Free memory was 102.5MB in the beginning and 100.7MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.44ms. Allocated memory is still 167.8MB. Free memory was 100.7MB in the beginning and 99.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 309.10ms. Allocated memory is still 167.8MB. Free memory was 99.5MB in the beginning and 79.5MB in the end (delta: 20.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 7046.75ms. Allocated memory was 167.8MB in the beginning and 838.9MB in the end (delta: 671.1MB). Free memory was 78.4MB in the beginning and 176.5MB in the end (delta: -98.1MB). Peak memory consumption was 571.1MB. Max. memory is 16.1GB. * Witness Printer took 61.91ms. Allocated memory is still 838.9MB. Free memory was 176.5MB in the beginning and 172.1MB in the end (delta: 4.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 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: 7.0s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 5.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 701 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 696 mSDsluCounter, 41 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 29 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1490 IncrementalHoareTripleChecker+Invalid, 1514 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 12 mSDtfsCounter, 1490 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 68 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=341occurred in iteration=3, InterpolantAutomatonStates: 60, 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, 1.1s InterpolantComputationTime, 156 NumberOfCodeBlocks, 156 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 148 ConstructedInterpolants, 0 QuantifiedInterpolants, 580 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! [2025-02-08 01:05:34,050 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