./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe034_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe034_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 f95cec1ef19619129f583fb8c66d7deea9b3c11be41d52b59a1e2cd5f199d72e --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 04:26:15,115 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 04:26:15,185 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-06 04:26:15,194 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 04:26:15,195 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 04:26:15,219 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 04:26:15,219 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 04:26:15,219 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 04:26:15,220 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 04:26:15,220 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 04:26:15,220 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 04:26:15,220 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 04:26:15,220 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 04:26:15,220 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 04:26:15,220 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 04:26:15,220 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 04:26:15,221 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 04:26:15,221 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 04:26:15,221 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 04:26:15,221 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 04:26:15,221 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 04:26:15,221 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 04:26:15,221 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 04:26:15,221 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 04:26:15,221 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 04:26:15,221 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 04:26:15,221 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 04:26:15,221 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 04:26:15,222 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 04:26:15,222 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 04:26:15,222 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 04:26:15,222 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 04:26:15,225 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:26:15,225 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 04:26:15,226 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 04:26:15,226 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 04:26:15,226 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 04:26:15,226 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 04:26:15,226 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 04:26:15,226 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 04:26:15,226 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 04:26:15,226 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 04:26:15,226 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 04:26:15,226 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 -> f95cec1ef19619129f583fb8c66d7deea9b3c11be41d52b59a1e2cd5f199d72e [2025-02-06 04:26:15,532 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 04:26:15,541 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 04:26:15,542 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 04:26:15,544 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 04:26:15,544 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 04:26:15,545 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe034_tso.i [2025-02-06 04:26:16,753 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/62fd255f2/5e53817683df4563b4e0e36b6cf8001f/FLAG6fa7cd4ff [2025-02-06 04:26:17,053 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 04:26:17,057 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe034_tso.i [2025-02-06 04:26:17,076 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/62fd255f2/5e53817683df4563b4e0e36b6cf8001f/FLAG6fa7cd4ff [2025-02-06 04:26:17,326 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/62fd255f2/5e53817683df4563b4e0e36b6cf8001f [2025-02-06 04:26:17,332 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 04:26:17,333 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 04:26:17,334 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 04:26:17,334 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 04:26:17,339 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 04:26:17,339 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:26:17" (1/1) ... [2025-02-06 04:26:17,340 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e386d16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:26:17, skipping insertion in model container [2025-02-06 04:26:17,340 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:26:17" (1/1) ... [2025-02-06 04:26:17,369 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 04:26:17,472 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/safe034_tso.i[945,958] [2025-02-06 04:26:17,575 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:26:17,583 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 04:26:17,590 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/safe034_tso.i[945,958] [2025-02-06 04:26:17,622 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:26:17,650 INFO L204 MainTranslator]: Completed translation [2025-02-06 04:26:17,650 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:26:17 WrapperNode [2025-02-06 04:26:17,650 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 04:26:17,651 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 04:26:17,651 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 04:26:17,651 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 04:26:17,655 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:26:17" (1/1) ... [2025-02-06 04:26:17,674 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:26:17" (1/1) ... [2025-02-06 04:26:17,688 INFO L138 Inliner]: procedures = 175, calls = 45, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 58 [2025-02-06 04:26:17,688 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 04:26:17,689 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 04:26:17,689 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 04:26:17,689 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 04:26:17,695 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:26:17" (1/1) ... [2025-02-06 04:26:17,695 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:26:17" (1/1) ... [2025-02-06 04:26:17,696 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:26:17" (1/1) ... [2025-02-06 04:26:17,703 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-02-06 04:26:17,703 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:26:17" (1/1) ... [2025-02-06 04:26:17,703 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:26:17" (1/1) ... [2025-02-06 04:26:17,706 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:26:17" (1/1) ... [2025-02-06 04:26:17,707 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:26:17" (1/1) ... [2025-02-06 04:26:17,708 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:26:17" (1/1) ... [2025-02-06 04:26:17,708 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:26:17" (1/1) ... [2025-02-06 04:26:17,709 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 04:26:17,710 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 04:26:17,710 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 04:26:17,710 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 04:26:17,710 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:26:17" (1/1) ... [2025-02-06 04:26:17,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:26:17,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:26:17,736 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 04:26:17,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 04:26:17,759 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-06 04:26:17,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 04:26:17,759 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-02-06 04:26:17,759 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-02-06 04:26:17,759 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-02-06 04:26:17,759 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-02-06 04:26:17,759 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-02-06 04:26:17,760 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-02-06 04:26:17,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 04:26:17,760 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-06 04:26:17,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 04:26:17,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 04:26:17,761 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 04:26:17,853 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 04:26:17,855 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 04:26:17,979 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 04:26:17,979 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 04:26:18,049 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 04:26:18,051 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 04:26:18,051 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:26:18 BoogieIcfgContainer [2025-02-06 04:26:18,051 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 04:26:18,053 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 04:26:18,054 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 04:26:18,058 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 04:26:18,059 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 04:26:17" (1/3) ... [2025-02-06 04:26:18,059 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@201b306c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:26:18, skipping insertion in model container [2025-02-06 04:26:18,060 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:26:17" (2/3) ... [2025-02-06 04:26:18,060 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@201b306c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:26:18, skipping insertion in model container [2025-02-06 04:26:18,060 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:26:18" (3/3) ... [2025-02-06 04:26:18,061 INFO L128 eAbstractionObserver]: Analyzing ICFG safe034_tso.i [2025-02-06 04:26:18,071 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 04:26:18,073 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG safe034_tso.i that has 4 procedures, 40 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-02-06 04:26:18,074 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 04:26:18,117 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-02-06 04:26:18,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 40 transitions, 92 flow [2025-02-06 04:26:18,181 INFO L124 PetriNetUnfolderBase]: 1/37 cut-off events. [2025-02-06 04:26:18,183 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 04:26:18,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 37 events. 1/37 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 64 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2025-02-06 04:26:18,185 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 40 transitions, 92 flow [2025-02-06 04:26:18,191 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 34 transitions, 77 flow [2025-02-06 04:26:18,199 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 04:26:18,213 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;@837eb75, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 04:26:18,214 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-02-06 04:26:18,229 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 04:26:18,229 INFO L124 PetriNetUnfolderBase]: 0/33 cut-off events. [2025-02-06 04:26:18,229 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 04:26:18,230 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:26:18,230 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:26:18,230 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:26:18,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:26:18,239 INFO L85 PathProgramCache]: Analyzing trace with hash -823888058, now seen corresponding path program 1 times [2025-02-06 04:26:18,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:26:18,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290042438] [2025-02-06 04:26:18,248 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:26:18,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:26:18,321 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-06 04:26:18,366 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-06 04:26:18,370 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:26:18,370 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:26:18,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:26:18,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:26:18,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290042438] [2025-02-06 04:26:18,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290042438] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:26:18,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:26:18,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 04:26:18,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688909518] [2025-02-06 04:26:18,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:26:18,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 04:26:18,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:26:18,655 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 04:26:18,656 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 04:26:18,657 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2025-02-06 04:26:18,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 34 transitions, 77 flow. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:26:18,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:26:18,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2025-02-06 04:26:18,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:26:19,225 INFO L124 PetriNetUnfolderBase]: 4185/6549 cut-off events. [2025-02-06 04:26:19,226 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2025-02-06 04:26:19,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12818 conditions, 6549 events. 4185/6549 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 37992 event pairs, 818 based on Foata normal form. 294/6828 useless extension candidates. Maximal degree in co-relation 12807. Up to 3216 conditions per place. [2025-02-06 04:26:19,256 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 60 selfloop transitions, 5 changer transitions 1/71 dead transitions. [2025-02-06 04:26:19,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 71 transitions, 289 flow [2025-02-06 04:26:19,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 04:26:19,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 04:26:19,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 104 transitions. [2025-02-06 04:26:19,265 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.65 [2025-02-06 04:26:19,266 INFO L175 Difference]: Start difference. First operand has 44 places, 34 transitions, 77 flow. Second operand 4 states and 104 transitions. [2025-02-06 04:26:19,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 71 transitions, 289 flow [2025-02-06 04:26:19,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 71 transitions, 284 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 04:26:19,271 INFO L231 Difference]: Finished difference. Result has 46 places, 37 transitions, 108 flow [2025-02-06 04:26:19,273 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=108, PETRI_PLACES=46, PETRI_TRANSITIONS=37} [2025-02-06 04:26:19,275 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 2 predicate places. [2025-02-06 04:26:19,275 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 37 transitions, 108 flow [2025-02-06 04:26:19,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:26:19,276 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:26:19,276 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:26:19,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 04:26:19,276 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:26:19,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:26:19,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1759969070, now seen corresponding path program 1 times [2025-02-06 04:26:19,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:26:19,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163582165] [2025-02-06 04:26:19,277 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:26:19,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:26:19,284 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 04:26:19,296 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 04:26:19,296 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:26:19,296 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:26:19,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:26:19,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:26:19,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163582165] [2025-02-06 04:26:19,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163582165] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:26:19,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:26:19,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 04:26:19,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266893748] [2025-02-06 04:26:19,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:26:19,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 04:26:19,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:26:19,446 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 04:26:19,446 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 04:26:19,446 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2025-02-06 04:26:19,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 108 flow. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:26:19,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:26:19,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2025-02-06 04:26:19,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:26:19,760 INFO L124 PetriNetUnfolderBase]: 2390/3744 cut-off events. [2025-02-06 04:26:19,760 INFO L125 PetriNetUnfolderBase]: For 715/715 co-relation queries the response was YES. [2025-02-06 04:26:19,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8561 conditions, 3744 events. 2390/3744 cut-off events. For 715/715 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 18972 event pairs, 536 based on Foata normal form. 194/3923 useless extension candidates. Maximal degree in co-relation 8549. Up to 1317 conditions per place. [2025-02-06 04:26:19,774 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 77 selfloop transitions, 8 changer transitions 1/91 dead transitions. [2025-02-06 04:26:19,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 91 transitions, 409 flow [2025-02-06 04:26:19,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 04:26:19,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 04:26:19,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 133 transitions. [2025-02-06 04:26:19,776 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.665 [2025-02-06 04:26:19,776 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 108 flow. Second operand 5 states and 133 transitions. [2025-02-06 04:26:19,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 91 transitions, 409 flow [2025-02-06 04:26:19,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 91 transitions, 399 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-02-06 04:26:19,780 INFO L231 Difference]: Finished difference. Result has 50 places, 40 transitions, 148 flow [2025-02-06 04:26:19,780 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=148, PETRI_PLACES=50, PETRI_TRANSITIONS=40} [2025-02-06 04:26:19,781 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 6 predicate places. [2025-02-06 04:26:19,781 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 148 flow [2025-02-06 04:26:19,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:26:19,781 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:26:19,781 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] [2025-02-06 04:26:19,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 04:26:19,781 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:26:19,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:26:19,782 INFO L85 PathProgramCache]: Analyzing trace with hash -2132447877, now seen corresponding path program 1 times [2025-02-06 04:26:19,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:26:19,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543552207] [2025-02-06 04:26:19,782 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:26:19,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:26:19,788 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-06 04:26:19,794 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-06 04:26:19,794 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:26:19,795 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:26:19,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:26:19,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:26:19,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543552207] [2025-02-06 04:26:19,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543552207] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:26:19,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:26:19,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 04:26:19,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224754480] [2025-02-06 04:26:19,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:26:19,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 04:26:19,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:26:19,907 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 04:26:19,907 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-02-06 04:26:19,907 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2025-02-06 04:26:19,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 148 flow. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:26:19,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:26:19,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2025-02-06 04:26:19,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:26:20,148 INFO L124 PetriNetUnfolderBase]: 1561/2393 cut-off events. [2025-02-06 04:26:20,149 INFO L125 PetriNetUnfolderBase]: For 1362/1362 co-relation queries the response was YES. [2025-02-06 04:26:20,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5921 conditions, 2393 events. 1561/2393 cut-off events. For 1362/1362 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 10918 event pairs, 487 based on Foata normal form. 64/2442 useless extension candidates. Maximal degree in co-relation 5907. Up to 918 conditions per place. [2025-02-06 04:26:20,162 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 64 selfloop transitions, 11 changer transitions 1/81 dead transitions. [2025-02-06 04:26:20,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 81 transitions, 392 flow [2025-02-06 04:26:20,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 04:26:20,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 04:26:20,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 132 transitions. [2025-02-06 04:26:20,164 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.55 [2025-02-06 04:26:20,164 INFO L175 Difference]: Start difference. First operand has 50 places, 40 transitions, 148 flow. Second operand 6 states and 132 transitions. [2025-02-06 04:26:20,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 81 transitions, 392 flow [2025-02-06 04:26:20,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 81 transitions, 367 flow, removed 4 selfloop flow, removed 4 redundant places. [2025-02-06 04:26:20,175 INFO L231 Difference]: Finished difference. Result has 53 places, 40 transitions, 162 flow [2025-02-06 04:26:20,175 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=162, PETRI_PLACES=53, PETRI_TRANSITIONS=40} [2025-02-06 04:26:20,175 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 9 predicate places. [2025-02-06 04:26:20,175 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 40 transitions, 162 flow [2025-02-06 04:26:20,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:26:20,176 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:26:20,176 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:26:20,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 04:26:20,176 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:26:20,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:26:20,177 INFO L85 PathProgramCache]: Analyzing trace with hash 597342926, now seen corresponding path program 1 times [2025-02-06 04:26:20,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:26:20,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390763429] [2025-02-06 04:26:20,177 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:26:20,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:26:20,184 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-02-06 04:26:20,198 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-02-06 04:26:20,198 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:26:20,198 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:26:20,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:26:20,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:26:20,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390763429] [2025-02-06 04:26:20,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390763429] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:26:20,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:26:20,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-06 04:26:20,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863156856] [2025-02-06 04:26:20,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:26:20,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 04:26:20,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:26:20,382 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 04:26:20,382 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-02-06 04:26:20,388 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2025-02-06 04:26:20,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 40 transitions, 162 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:26:20,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:26:20,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2025-02-06 04:26:20,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:26:20,913 INFO L124 PetriNetUnfolderBase]: 2921/4465 cut-off events. [2025-02-06 04:26:20,914 INFO L125 PetriNetUnfolderBase]: For 3256/3256 co-relation queries the response was YES. [2025-02-06 04:26:20,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11370 conditions, 4465 events. 2921/4465 cut-off events. For 3256/3256 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 22938 event pairs, 125 based on Foata normal form. 16/4480 useless extension candidates. Maximal degree in co-relation 11355. Up to 1820 conditions per place. [2025-02-06 04:26:20,929 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 70 selfloop transitions, 8 changer transitions 61/143 dead transitions. [2025-02-06 04:26:20,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 143 transitions, 848 flow [2025-02-06 04:26:20,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 04:26:20,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-02-06 04:26:20,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 199 transitions. [2025-02-06 04:26:20,931 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4975 [2025-02-06 04:26:20,931 INFO L175 Difference]: Start difference. First operand has 53 places, 40 transitions, 162 flow. Second operand 10 states and 199 transitions. [2025-02-06 04:26:20,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 143 transitions, 848 flow [2025-02-06 04:26:20,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 143 transitions, 654 flow, removed 30 selfloop flow, removed 8 redundant places. [2025-02-06 04:26:20,946 INFO L231 Difference]: Finished difference. Result has 62 places, 45 transitions, 165 flow [2025-02-06 04:26:20,946 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=165, PETRI_PLACES=62, PETRI_TRANSITIONS=45} [2025-02-06 04:26:20,947 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 18 predicate places. [2025-02-06 04:26:20,947 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 45 transitions, 165 flow [2025-02-06 04:26:20,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:26:20,947 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:26:20,947 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:26:20,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 04:26:20,947 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-02-06 04:26:20,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:26:20,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1017833558, now seen corresponding path program 2 times [2025-02-06 04:26:20,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:26:20,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408666069] [2025-02-06 04:26:20,948 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 04:26:20,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:26:20,955 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 1 equivalence classes. [2025-02-06 04:26:20,962 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-02-06 04:26:20,962 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 04:26:20,962 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:26:21,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:26:21,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:26:21,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408666069] [2025-02-06 04:26:21,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408666069] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:26:21,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:26:21,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 04:26:21,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297206581] [2025-02-06 04:26:21,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:26:21,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 04:26:21,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:26:21,083 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 04:26:21,083 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 04:26:21,089 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 40 [2025-02-06 04:26:21,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 45 transitions, 165 flow. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:26:21,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:26:21,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 40 [2025-02-06 04:26:21,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:26:21,366 INFO L124 PetriNetUnfolderBase]: 2047/3240 cut-off events. [2025-02-06 04:26:21,366 INFO L125 PetriNetUnfolderBase]: For 1110/1110 co-relation queries the response was YES. [2025-02-06 04:26:21,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7955 conditions, 3240 events. 2047/3240 cut-off events. For 1110/1110 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 16131 event pairs, 346 based on Foata normal form. 8/3245 useless extension candidates. Maximal degree in co-relation 7944. Up to 2073 conditions per place. [2025-02-06 04:26:21,373 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 0 selfloop transitions, 0 changer transitions 89/89 dead transitions. [2025-02-06 04:26:21,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 89 transitions, 471 flow [2025-02-06 04:26:21,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 04:26:21,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-02-06 04:26:21,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2025-02-06 04:26:21,378 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2025-02-06 04:26:21,378 INFO L175 Difference]: Start difference. First operand has 62 places, 45 transitions, 165 flow. Second operand 7 states and 130 transitions. [2025-02-06 04:26:21,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 89 transitions, 471 flow [2025-02-06 04:26:21,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 89 transitions, 465 flow, removed 3 selfloop flow, removed 3 redundant places. [2025-02-06 04:26:21,380 INFO L231 Difference]: Finished difference. Result has 58 places, 0 transitions, 0 flow [2025-02-06 04:26:21,380 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=58, PETRI_TRANSITIONS=0} [2025-02-06 04:26:21,381 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 14 predicate places. [2025-02-06 04:26:21,381 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 0 transitions, 0 flow [2025-02-06 04:26:21,381 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:26:21,383 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2025-02-06 04:26:21,383 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2025-02-06 04:26:21,383 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2025-02-06 04:26:21,383 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2025-02-06 04:26:21,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 04:26:21,383 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2025-02-06 04:26:21,386 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-02-06 04:26:21,386 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-06 04:26:21,389 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.02 04:26:21 BasicIcfg [2025-02-06 04:26:21,389 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-06 04:26:21,389 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-06 04:26:21,389 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-06 04:26:21,389 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-06 04:26:21,390 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:26:18" (3/4) ... [2025-02-06 04:26:21,391 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-02-06 04:26:21,393 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P0 [2025-02-06 04:26:21,393 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P1 [2025-02-06 04:26:21,393 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P2 [2025-02-06 04:26:21,395 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 28 nodes and edges [2025-02-06 04:26:21,395 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2025-02-06 04:26:21,395 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2025-02-06 04:26:21,395 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2025-02-06 04:26:21,437 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-06 04:26:21,438 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-06 04:26:21,438 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-06 04:26:21,438 INFO L158 Benchmark]: Toolchain (without parser) took 4105.47ms. Allocated memory was 167.8MB in the beginning and 427.8MB in the end (delta: 260.0MB). Free memory was 123.0MB in the beginning and 265.2MB in the end (delta: -142.1MB). Peak memory consumption was 118.2MB. Max. memory is 16.1GB. [2025-02-06 04:26:21,439 INFO L158 Benchmark]: CDTParser took 0.50ms. Allocated memory is still 201.3MB. Free memory is still 116.4MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 04:26:21,439 INFO L158 Benchmark]: CACSL2BoogieTranslator took 316.43ms. Allocated memory is still 167.8MB. Free memory was 123.0MB in the beginning and 100.4MB in the end (delta: 22.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-06 04:26:21,439 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.09ms. Allocated memory is still 167.8MB. Free memory was 100.4MB in the beginning and 98.5MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 04:26:21,439 INFO L158 Benchmark]: Boogie Preprocessor took 20.69ms. Allocated memory is still 167.8MB. Free memory was 98.5MB in the beginning and 97.5MB in the end (delta: 944.5kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 04:26:21,439 INFO L158 Benchmark]: IcfgBuilder took 341.69ms. Allocated memory is still 167.8MB. Free memory was 97.5MB in the beginning and 78.0MB in the end (delta: 19.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-06 04:26:21,440 INFO L158 Benchmark]: TraceAbstraction took 3335.67ms. Allocated memory was 167.8MB in the beginning and 427.8MB in the end (delta: 260.0MB). Free memory was 77.2MB in the beginning and 273.4MB in the end (delta: -196.2MB). Peak memory consumption was 76.3MB. Max. memory is 16.1GB. [2025-02-06 04:26:21,440 INFO L158 Benchmark]: Witness Printer took 48.78ms. Allocated memory is still 427.8MB. Free memory was 273.4MB in the beginning and 265.2MB in the end (delta: 8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-06 04:26:21,441 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50ms. Allocated memory is still 201.3MB. Free memory is still 116.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 316.43ms. Allocated memory is still 167.8MB. Free memory was 123.0MB in the beginning and 100.4MB in the end (delta: 22.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.09ms. Allocated memory is still 167.8MB. Free memory was 100.4MB in the beginning and 98.5MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 20.69ms. Allocated memory is still 167.8MB. Free memory was 98.5MB in the beginning and 97.5MB in the end (delta: 944.5kB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 341.69ms. Allocated memory is still 167.8MB. Free memory was 97.5MB in the beginning and 78.0MB in the end (delta: 19.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 3335.67ms. Allocated memory was 167.8MB in the beginning and 427.8MB in the end (delta: 260.0MB). Free memory was 77.2MB in the beginning and 273.4MB in the end (delta: -196.2MB). Peak memory consumption was 76.3MB. Max. memory is 16.1GB. * Witness Printer took 48.78ms. Allocated memory is still 427.8MB. Free memory was 273.4MB in the beginning and 265.2MB in the end (delta: 8.2MB). 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, 66 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.2s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 417 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 411 mSDsluCounter, 32 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 31 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 855 IncrementalHoareTripleChecker+Invalid, 871 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 1 mSDtfsCounter, 855 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=165occurred in iteration=4, InterpolantAutomatonStates: 32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 120 NumberOfCodeBlocks, 120 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 115 ConstructedInterpolants, 0 QuantifiedInterpolants, 469 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-02-06 04:26:21,454 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE