./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe026_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe026_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 497394b95b3d1d02ab9ce49b64d507b876172aa5c11270440b3f7ed6bf5019ac --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 17:22:11,309 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 17:22:11,362 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 17:22:11,365 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 17:22:11,365 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 17:22:11,380 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 17:22:11,380 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 17:22:11,380 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 17:22:11,381 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 17:22:11,381 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 17:22:11,381 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 17:22:11,382 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 17:22:11,382 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 17:22:11,382 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 17:22:11,382 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 17:22:11,383 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 17:22:11,383 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 17:22:11,383 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 17:22:11,383 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 17:22:11,383 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 17:22:11,383 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 17:22:11,383 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 17:22:11,383 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 17:22:11,383 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 17:22:11,383 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 17:22:11,383 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 17:22:11,384 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 17:22:11,384 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 17:22:11,384 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 17:22:11,384 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 17:22:11,384 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 17:22:11,384 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 17:22:11,384 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 17:22:11,385 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 17:22:11,385 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 17:22:11,385 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 17:22:11,385 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 17:22:11,385 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 17:22:11,385 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 17:22:11,385 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 17:22:11,385 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 17:22:11,385 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 17:22:11,385 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 17:22:11,385 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 497394b95b3d1d02ab9ce49b64d507b876172aa5c11270440b3f7ed6bf5019ac [2025-03-08 17:22:11,608 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 17:22:11,618 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 17:22:11,620 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 17:22:11,621 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 17:22:11,622 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 17:22:11,622 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe026_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2025-03-08 17:22:12,821 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f746527f9/1fc72c3164c54a63b0abf607032baa3f/FLAGc1a23c0fe [2025-03-08 17:22:13,130 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 17:22:13,133 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe026_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2025-03-08 17:22:13,149 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f746527f9/1fc72c3164c54a63b0abf607032baa3f/FLAGc1a23c0fe [2025-03-08 17:22:13,165 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f746527f9/1fc72c3164c54a63b0abf607032baa3f [2025-03-08 17:22:13,168 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 17:22:13,169 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 17:22:13,170 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 17:22:13,171 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 17:22:13,176 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 17:22:13,177 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:22:13" (1/1) ... [2025-03-08 17:22:13,179 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17c5f70e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:22:13, skipping insertion in model container [2025-03-08 17:22:13,179 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:22:13" (1/1) ... [2025-03-08 17:22:13,209 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 17:22:13,334 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe026_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[996,1009] [2025-03-08 17:22:13,507 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 17:22:13,516 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 17:22:13,525 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe026_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[996,1009] [2025-03-08 17:22:13,563 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 17:22:13,588 INFO L204 MainTranslator]: Completed translation [2025-03-08 17:22:13,589 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:22:13 WrapperNode [2025-03-08 17:22:13,589 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 17:22:13,590 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 17:22:13,590 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 17:22:13,590 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 17:22:13,594 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:22:13" (1/1) ... [2025-03-08 17:22:13,605 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:22:13" (1/1) ... [2025-03-08 17:22:13,629 INFO L138 Inliner]: procedures = 175, calls = 40, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 114 [2025-03-08 17:22:13,631 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 17:22:13,633 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 17:22:13,633 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 17:22:13,633 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 17:22:13,639 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:22:13" (1/1) ... [2025-03-08 17:22:13,640 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:22:13" (1/1) ... [2025-03-08 17:22:13,642 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:22:13" (1/1) ... [2025-03-08 17:22:13,657 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-08 17:22:13,657 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:22:13" (1/1) ... [2025-03-08 17:22:13,657 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:22:13" (1/1) ... [2025-03-08 17:22:13,663 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:22:13" (1/1) ... [2025-03-08 17:22:13,664 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:22:13" (1/1) ... [2025-03-08 17:22:13,664 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:22:13" (1/1) ... [2025-03-08 17:22:13,665 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:22:13" (1/1) ... [2025-03-08 17:22:13,667 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 17:22:13,667 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 17:22:13,668 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 17:22:13,668 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 17:22:13,668 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:22:13" (1/1) ... [2025-03-08 17:22:13,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 17:22:13,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:22:13,698 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-08 17:22:13,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-08 17:22:13,718 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-08 17:22:13,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 17:22:13,719 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-03-08 17:22:13,719 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-03-08 17:22:13,719 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-03-08 17:22:13,719 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-03-08 17:22:13,719 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-03-08 17:22:13,719 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-03-08 17:22:13,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 17:22:13,720 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-08 17:22:13,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 17:22:13,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 17:22:13,721 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-08 17:22:13,816 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 17:22:13,817 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 17:22:14,052 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-08 17:22:14,052 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 17:22:14,224 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 17:22:14,224 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 17:22:14,225 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:22:14 BoogieIcfgContainer [2025-03-08 17:22:14,225 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 17:22:14,226 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 17:22:14,227 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 17:22:14,230 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 17:22:14,230 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 05:22:13" (1/3) ... [2025-03-08 17:22:14,231 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e5888f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:22:14, skipping insertion in model container [2025-03-08 17:22:14,231 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:22:13" (2/3) ... [2025-03-08 17:22:14,231 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e5888f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:22:14, skipping insertion in model container [2025-03-08 17:22:14,231 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:22:14" (3/3) ... [2025-03-08 17:22:14,232 INFO L128 eAbstractionObserver]: Analyzing ICFG safe026_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2025-03-08 17:22:14,242 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 17:22:14,243 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG safe026_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i that has 4 procedures, 38 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2025-03-08 17:22:14,243 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-08 17:22:14,284 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-08 17:22:14,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 38 transitions, 88 flow [2025-03-08 17:22:14,333 INFO L124 PetriNetUnfolderBase]: 1/35 cut-off events. [2025-03-08 17:22:14,336 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-08 17:22:14,338 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 62 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2025-03-08 17:22:14,338 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 38 transitions, 88 flow [2025-03-08 17:22:14,342 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 35 transitions, 79 flow [2025-03-08 17:22:14,348 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 17:22:14,358 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;@6ff8337c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 17:22:14,358 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-03-08 17:22:14,362 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-08 17:22:14,362 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2025-03-08 17:22:14,362 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-08 17:22:14,362 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:22:14,362 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2025-03-08 17:22:14,363 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-08 17:22:14,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:22:14,367 INFO L85 PathProgramCache]: Analyzing trace with hash 10660587, now seen corresponding path program 1 times [2025-03-08 17:22:14,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:22:14,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977620529] [2025-03-08 17:22:14,373 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:22:14,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:22:14,434 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-08 17:22:14,455 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-08 17:22:14,456 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:22:14,456 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:22:14,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:22:14,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:22:14,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977620529] [2025-03-08 17:22:14,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977620529] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:22:14,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:22:14,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-08 17:22:14,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118332464] [2025-03-08 17:22:14,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:22:14,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 17:22:14,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:22:14,730 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 17:22:14,731 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 17:22:14,732 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2025-03-08 17:22:14,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 35 transitions, 79 flow. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:22:14,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:22:14,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2025-03-08 17:22:14,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:22:15,436 INFO L124 PetriNetUnfolderBase]: 3481/5088 cut-off events. [2025-03-08 17:22:15,436 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2025-03-08 17:22:15,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10161 conditions, 5088 events. 3481/5088 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 27693 event pairs, 371 based on Foata normal form. 180/5236 useless extension candidates. Maximal degree in co-relation 10150. Up to 4371 conditions per place. [2025-03-08 17:22:15,474 INFO L140 encePairwiseOnDemand]: 34/38 looper letters, 43 selfloop transitions, 2 changer transitions 2/53 dead transitions. [2025-03-08 17:22:15,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 53 transitions, 215 flow [2025-03-08 17:22:15,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 17:22:15,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-08 17:22:15,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2025-03-08 17:22:15,483 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6754385964912281 [2025-03-08 17:22:15,485 INFO L175 Difference]: Start difference. First operand has 44 places, 35 transitions, 79 flow. Second operand 3 states and 77 transitions. [2025-03-08 17:22:15,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 53 transitions, 215 flow [2025-03-08 17:22:15,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 53 transitions, 210 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-08 17:22:15,492 INFO L231 Difference]: Finished difference. Result has 42 places, 32 transitions, 74 flow [2025-03-08 17:22:15,495 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=42, PETRI_TRANSITIONS=32} [2025-03-08 17:22:15,498 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, -2 predicate places. [2025-03-08 17:22:15,498 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 32 transitions, 74 flow [2025-03-08 17:22:15,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:22:15,499 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:22:15,499 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:22:15,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 17:22:15,500 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-08 17:22:15,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:22:15,501 INFO L85 PathProgramCache]: Analyzing trace with hash -494767524, now seen corresponding path program 1 times [2025-03-08 17:22:15,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:22:15,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224504084] [2025-03-08 17:22:15,502 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:22:15,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:22:15,514 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-08 17:22:15,532 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-08 17:22:15,535 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:22:15,535 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:22:15,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:22:15,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:22:15,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224504084] [2025-03-08 17:22:15,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224504084] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:22:15,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:22:15,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 17:22:15,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508945376] [2025-03-08 17:22:15,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:22:15,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 17:22:15,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:22:15,754 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 17:22:15,754 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-08 17:22:15,757 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2025-03-08 17:22:15,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 74 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) [2025-03-08 17:22:15,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:22:15,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2025-03-08 17:22:15,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:22:16,429 INFO L124 PetriNetUnfolderBase]: 4791/7063 cut-off events. [2025-03-08 17:22:16,430 INFO L125 PetriNetUnfolderBase]: For 352/352 co-relation queries the response was YES. [2025-03-08 17:22:16,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14397 conditions, 7063 events. 4791/7063 cut-off events. For 352/352 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 38129 event pairs, 684 based on Foata normal form. 0/6908 useless extension candidates. Maximal degree in co-relation 14387. Up to 4121 conditions per place. [2025-03-08 17:22:16,454 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 38 selfloop transitions, 2 changer transitions 65/109 dead transitions. [2025-03-08 17:22:16,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 109 transitions, 450 flow [2025-03-08 17:22:16,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 17:22:16,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-08 17:22:16,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 163 transitions. [2025-03-08 17:22:16,458 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5361842105263158 [2025-03-08 17:22:16,458 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 74 flow. Second operand 8 states and 163 transitions. [2025-03-08 17:22:16,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 109 transitions, 450 flow [2025-03-08 17:22:16,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 109 transitions, 434 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-08 17:22:16,463 INFO L231 Difference]: Finished difference. Result has 51 places, 31 transitions, 84 flow [2025-03-08 17:22:16,463 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=84, PETRI_PLACES=51, PETRI_TRANSITIONS=31} [2025-03-08 17:22:16,464 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 7 predicate places. [2025-03-08 17:22:16,464 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 31 transitions, 84 flow [2025-03-08 17:22:16,464 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) [2025-03-08 17:22:16,464 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:22:16,464 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:22:16,464 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 17:22:16,464 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-08 17:22:16,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:22:16,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1160994901, now seen corresponding path program 1 times [2025-03-08 17:22:16,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:22:16,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816176793] [2025-03-08 17:22:16,466 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:22:16,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:22:16,475 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-08 17:22:16,482 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-08 17:22:16,482 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:22:16,482 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:22:16,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:22:16,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:22:16,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816176793] [2025-03-08 17:22:16,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816176793] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:22:16,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:22:16,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 17:22:16,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687652078] [2025-03-08 17:22:16,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:22:16,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 17:22:16,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:22:16,614 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 17:22:16,614 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-08 17:22:16,619 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2025-03-08 17:22:16,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 31 transitions, 84 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) [2025-03-08 17:22:16,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:22:16,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2025-03-08 17:22:16,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:22:17,674 INFO L124 PetriNetUnfolderBase]: 5981/8863 cut-off events. [2025-03-08 17:22:17,674 INFO L125 PetriNetUnfolderBase]: For 1994/1994 co-relation queries the response was YES. [2025-03-08 17:22:17,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19778 conditions, 8863 events. 5981/8863 cut-off events. For 1994/1994 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 50505 event pairs, 379 based on Foata normal form. 246/9106 useless extension candidates. Maximal degree in co-relation 19763. Up to 4459 conditions per place. [2025-03-08 17:22:17,713 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 56 selfloop transitions, 7 changer transitions 67/134 dead transitions. [2025-03-08 17:22:17,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 134 transitions, 586 flow [2025-03-08 17:22:17,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 17:22:17,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-08 17:22:17,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 203 transitions. [2025-03-08 17:22:17,717 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5342105263157895 [2025-03-08 17:22:17,717 INFO L175 Difference]: Start difference. First operand has 51 places, 31 transitions, 84 flow. Second operand 10 states and 203 transitions. [2025-03-08 17:22:17,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 134 transitions, 586 flow [2025-03-08 17:22:17,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 134 transitions, 550 flow, removed 14 selfloop flow, removed 6 redundant places. [2025-03-08 17:22:17,787 INFO L231 Difference]: Finished difference. Result has 56 places, 36 transitions, 131 flow [2025-03-08 17:22:17,787 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=131, PETRI_PLACES=56, PETRI_TRANSITIONS=36} [2025-03-08 17:22:17,788 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 12 predicate places. [2025-03-08 17:22:17,788 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 36 transitions, 131 flow [2025-03-08 17:22:17,788 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) [2025-03-08 17:22:17,789 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:22:17,789 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:22:17,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 17:22:17,789 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-08 17:22:17,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:22:17,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1250309826, now seen corresponding path program 1 times [2025-03-08 17:22:17,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:22:17,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384588570] [2025-03-08 17:22:17,790 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:22:17,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:22:17,801 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-08 17:22:17,808 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-08 17:22:17,809 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:22:17,809 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:22:17,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:22:17,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:22:17,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384588570] [2025-03-08 17:22:17,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384588570] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:22:17,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:22:17,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 17:22:17,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46840809] [2025-03-08 17:22:17,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:22:17,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 17:22:17,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:22:17,915 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 17:22:17,915 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 17:22:17,919 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2025-03-08 17:22:17,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 36 transitions, 131 flow. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:22:17,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:22:17,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2025-03-08 17:22:17,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:22:18,774 INFO L124 PetriNetUnfolderBase]: 8213/12195 cut-off events. [2025-03-08 17:22:18,774 INFO L125 PetriNetUnfolderBase]: For 7354/7356 co-relation queries the response was YES. [2025-03-08 17:22:18,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30418 conditions, 12195 events. 8213/12195 cut-off events. For 7354/7356 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 72274 event pairs, 1781 based on Foata normal form. 218/12410 useless extension candidates. Maximal degree in co-relation 30399. Up to 5849 conditions per place. [2025-03-08 17:22:18,815 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 48 selfloop transitions, 5 changer transitions 41/98 dead transitions. [2025-03-08 17:22:18,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 98 transitions, 510 flow [2025-03-08 17:22:18,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 17:22:18,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-08 17:22:18,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 131 transitions. [2025-03-08 17:22:18,817 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5745614035087719 [2025-03-08 17:22:18,817 INFO L175 Difference]: Start difference. First operand has 56 places, 36 transitions, 131 flow. Second operand 6 states and 131 transitions. [2025-03-08 17:22:18,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 98 transitions, 510 flow [2025-03-08 17:22:18,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 98 transitions, 498 flow, removed 6 selfloop flow, removed 4 redundant places. [2025-03-08 17:22:18,877 INFO L231 Difference]: Finished difference. Result has 54 places, 36 transitions, 143 flow [2025-03-08 17:22:18,877 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=143, PETRI_PLACES=54, PETRI_TRANSITIONS=36} [2025-03-08 17:22:18,878 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 10 predicate places. [2025-03-08 17:22:18,878 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 36 transitions, 143 flow [2025-03-08 17:22:18,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:22:18,878 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:22:18,878 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:22:18,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 17:22:18,879 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-08 17:22:18,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:22:18,879 INFO L85 PathProgramCache]: Analyzing trace with hash 838861448, now seen corresponding path program 2 times [2025-03-08 17:22:18,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:22:18,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629086106] [2025-03-08 17:22:18,879 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 17:22:18,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:22:18,885 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 1 equivalence classes. [2025-03-08 17:22:18,896 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-08 17:22:18,897 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-08 17:22:18,897 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:22:19,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:22:19,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:22:19,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629086106] [2025-03-08 17:22:19,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629086106] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:22:19,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:22:19,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 17:22:19,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631882211] [2025-03-08 17:22:19,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:22:19,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 17:22:19,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:22:19,016 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 17:22:19,016 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 17:22:19,017 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2025-03-08 17:22:19,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 36 transitions, 143 flow. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:22:19,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:22:19,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2025-03-08 17:22:19,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:22:19,573 INFO L124 PetriNetUnfolderBase]: 3687/5886 cut-off events. [2025-03-08 17:22:19,573 INFO L125 PetriNetUnfolderBase]: For 3514/3514 co-relation queries the response was YES. [2025-03-08 17:22:19,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14811 conditions, 5886 events. 3687/5886 cut-off events. For 3514/3514 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 34407 event pairs, 541 based on Foata normal form. 266/6148 useless extension candidates. Maximal degree in co-relation 14791. Up to 3047 conditions per place. [2025-03-08 17:22:19,598 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 62 selfloop transitions, 5 changer transitions 1/73 dead transitions. [2025-03-08 17:22:19,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 73 transitions, 417 flow [2025-03-08 17:22:19,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 17:22:19,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-08 17:22:19,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 95 transitions. [2025-03-08 17:22:19,599 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.625 [2025-03-08 17:22:19,599 INFO L175 Difference]: Start difference. First operand has 54 places, 36 transitions, 143 flow. Second operand 4 states and 95 transitions. [2025-03-08 17:22:19,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 73 transitions, 417 flow [2025-03-08 17:22:19,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 73 transitions, 388 flow, removed 4 selfloop flow, removed 6 redundant places. [2025-03-08 17:22:19,609 INFO L231 Difference]: Finished difference. Result has 51 places, 39 transitions, 156 flow [2025-03-08 17:22:19,609 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=156, PETRI_PLACES=51, PETRI_TRANSITIONS=39} [2025-03-08 17:22:19,609 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 7 predicate places. [2025-03-08 17:22:19,609 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 39 transitions, 156 flow [2025-03-08 17:22:19,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:22:19,610 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:22:19,610 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:22:19,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 17:22:19,610 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-08 17:22:19,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:22:19,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1386949405, now seen corresponding path program 1 times [2025-03-08 17:22:19,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:22:19,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456724902] [2025-03-08 17:22:19,611 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:22:19,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:22:19,620 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-03-08 17:22:19,654 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-03-08 17:22:19,655 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:22:19,656 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:22:19,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:22:19,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:22:19,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456724902] [2025-03-08 17:22:19,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456724902] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:22:19,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:22:19,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 17:22:19,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333179234] [2025-03-08 17:22:19,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:22:19,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 17:22:19,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:22:19,794 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 17:22:19,794 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-08 17:22:19,795 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2025-03-08 17:22:19,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 39 transitions, 156 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) [2025-03-08 17:22:19,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:22:19,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2025-03-08 17:22:19,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:22:20,180 INFO L124 PetriNetUnfolderBase]: 2297/3666 cut-off events. [2025-03-08 17:22:20,181 INFO L125 PetriNetUnfolderBase]: For 2332/2332 co-relation queries the response was YES. [2025-03-08 17:22:20,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9832 conditions, 3666 events. 2297/3666 cut-off events. For 2332/2332 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 19053 event pairs, 289 based on Foata normal form. 208/3870 useless extension candidates. Maximal degree in co-relation 9814. Up to 1161 conditions per place. [2025-03-08 17:22:20,192 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 76 selfloop transitions, 8 changer transitions 2/91 dead transitions. [2025-03-08 17:22:20,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 91 transitions, 525 flow [2025-03-08 17:22:20,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 17:22:20,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-08 17:22:20,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2025-03-08 17:22:20,193 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6368421052631579 [2025-03-08 17:22:20,193 INFO L175 Difference]: Start difference. First operand has 51 places, 39 transitions, 156 flow. Second operand 5 states and 121 transitions. [2025-03-08 17:22:20,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 91 transitions, 525 flow [2025-03-08 17:22:20,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 91 transitions, 515 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-03-08 17:22:20,196 INFO L231 Difference]: Finished difference. Result has 55 places, 42 transitions, 196 flow [2025-03-08 17:22:20,196 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=196, PETRI_PLACES=55, PETRI_TRANSITIONS=42} [2025-03-08 17:22:20,196 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 11 predicate places. [2025-03-08 17:22:20,196 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 42 transitions, 196 flow [2025-03-08 17:22:20,197 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) [2025-03-08 17:22:20,197 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:22:20,197 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] [2025-03-08 17:22:20,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 17:22:20,197 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-08 17:22:20,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:22:20,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1578580241, now seen corresponding path program 1 times [2025-03-08 17:22:20,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:22:20,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244457863] [2025-03-08 17:22:20,197 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:22:20,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:22:20,204 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-03-08 17:22:20,260 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-03-08 17:22:20,261 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:22:20,262 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:22:20,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:22:20,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:22:20,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244457863] [2025-03-08 17:22:20,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244457863] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:22:20,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:22:20,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 17:22:20,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584228526] [2025-03-08 17:22:20,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:22:20,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 17:22:20,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:22:20,400 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 17:22:20,400 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-03-08 17:22:20,401 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2025-03-08 17:22:20,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 42 transitions, 196 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:22:20,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:22:20,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2025-03-08 17:22:20,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:22:20,637 INFO L124 PetriNetUnfolderBase]: 1423/2240 cut-off events. [2025-03-08 17:22:20,637 INFO L125 PetriNetUnfolderBase]: For 2576/2576 co-relation queries the response was YES. [2025-03-08 17:22:20,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6560 conditions, 2240 events. 1423/2240 cut-off events. For 2576/2576 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 10324 event pairs, 229 based on Foata normal form. 92/2328 useless extension candidates. Maximal degree in co-relation 6540. Up to 784 conditions per place. [2025-03-08 17:22:20,644 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 63 selfloop transitions, 11 changer transitions 3/82 dead transitions. [2025-03-08 17:22:20,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 82 transitions, 489 flow [2025-03-08 17:22:20,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 17:22:20,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-08 17:22:20,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 123 transitions. [2025-03-08 17:22:20,645 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5394736842105263 [2025-03-08 17:22:20,645 INFO L175 Difference]: Start difference. First operand has 55 places, 42 transitions, 196 flow. Second operand 6 states and 123 transitions. [2025-03-08 17:22:20,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 82 transitions, 489 flow [2025-03-08 17:22:20,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 82 transitions, 439 flow, removed 13 selfloop flow, removed 7 redundant places. [2025-03-08 17:22:20,650 INFO L231 Difference]: Finished difference. Result has 55 places, 42 transitions, 197 flow [2025-03-08 17:22:20,650 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=197, PETRI_PLACES=55, PETRI_TRANSITIONS=42} [2025-03-08 17:22:20,651 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 11 predicate places. [2025-03-08 17:22:20,651 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 42 transitions, 197 flow [2025-03-08 17:22:20,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:22:20,651 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:22:20,651 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] [2025-03-08 17:22:20,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-08 17:22:20,651 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-08 17:22:20,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:22:20,652 INFO L85 PathProgramCache]: Analyzing trace with hash -837883710, now seen corresponding path program 1 times [2025-03-08 17:22:20,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:22:20,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341793776] [2025-03-08 17:22:20,652 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:22:20,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:22:20,659 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-08 17:22:20,703 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-08 17:22:20,704 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:22:20,704 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:22:21,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:22:21,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:22:21,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341793776] [2025-03-08 17:22:21,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341793776] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:22:21,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:22:21,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-08 17:22:21,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264506493] [2025-03-08 17:22:21,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:22:21,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 17:22:21,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:22:21,423 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 17:22:21,423 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-03-08 17:22:21,429 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 38 [2025-03-08 17:22:21,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 42 transitions, 197 flow. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:22:21,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:22:21,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 38 [2025-03-08 17:22:21,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:22:21,874 INFO L124 PetriNetUnfolderBase]: 1861/2918 cut-off events. [2025-03-08 17:22:21,875 INFO L125 PetriNetUnfolderBase]: For 3239/3239 co-relation queries the response was YES. [2025-03-08 17:22:21,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8392 conditions, 2918 events. 1861/2918 cut-off events. For 3239/3239 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 14127 event pairs, 630 based on Foata normal form. 8/2924 useless extension candidates. Maximal degree in co-relation 8374. Up to 1275 conditions per place. [2025-03-08 17:22:21,882 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 45 selfloop transitions, 4 changer transitions 72/125 dead transitions. [2025-03-08 17:22:21,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 125 transitions, 841 flow [2025-03-08 17:22:21,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-08 17:22:21,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-08 17:22:21,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2025-03-08 17:22:21,884 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4502923976608187 [2025-03-08 17:22:21,884 INFO L175 Difference]: Start difference. First operand has 55 places, 42 transitions, 197 flow. Second operand 9 states and 154 transitions. [2025-03-08 17:22:21,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 125 transitions, 841 flow [2025-03-08 17:22:21,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 125 transitions, 647 flow, removed 30 selfloop flow, removed 8 redundant places. [2025-03-08 17:22:21,893 INFO L231 Difference]: Finished difference. Result has 61 places, 42 transitions, 168 flow [2025-03-08 17:22:21,893 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=168, PETRI_PLACES=61, PETRI_TRANSITIONS=42} [2025-03-08 17:22:21,894 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 17 predicate places. [2025-03-08 17:22:21,894 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 42 transitions, 168 flow [2025-03-08 17:22:21,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:22:21,894 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:22:21,894 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] [2025-03-08 17:22:21,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-08 17:22:21,895 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2025-03-08 17:22:21,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:22:21,895 INFO L85 PathProgramCache]: Analyzing trace with hash -702249624, now seen corresponding path program 2 times [2025-03-08 17:22:21,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:22:21,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612380427] [2025-03-08 17:22:21,895 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 17:22:21,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:22:21,902 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 28 statements into 1 equivalence classes. [2025-03-08 17:22:21,951 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-08 17:22:21,953 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-08 17:22:21,953 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-08 17:22:21,953 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-08 17:22:21,959 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-08 17:22:22,020 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-08 17:22:22,021 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:22:22,021 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-08 17:22:22,045 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-08 17:22:22,045 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-08 17:22:22,046 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2025-03-08 17:22:22,048 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2025-03-08 17:22:22,048 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2025-03-08 17:22:22,048 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2025-03-08 17:22:22,048 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2025-03-08 17:22:22,048 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2025-03-08 17:22:22,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-08 17:22:22,048 INFO L422 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1] [2025-03-08 17:22:22,109 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-08 17:22:22,109 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-08 17:22:22,112 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.03 05:22:22 BasicIcfg [2025-03-08 17:22:22,112 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-08 17:22:22,113 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-08 17:22:22,113 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-08 17:22:22,113 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-08 17:22:22,114 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:22:14" (3/4) ... [2025-03-08 17:22:22,114 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2025-03-08 17:22:22,189 INFO L127 tionWitnessGenerator]: Generated YAML witness of length 9. [2025-03-08 17:22:22,227 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-08 17:22:22,227 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-08 17:22:22,227 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-08 17:22:22,228 INFO L158 Benchmark]: Toolchain (without parser) took 9059.02ms. Allocated memory was 142.6MB in the beginning and 1.1GB in the end (delta: 931.1MB). Free memory was 109.6MB in the beginning and 812.0MB in the end (delta: -702.5MB). Peak memory consumption was 226.5MB. Max. memory is 16.1GB. [2025-03-08 17:22:22,228 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 201.3MB. Free memory is still 126.2MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 17:22:22,228 INFO L158 Benchmark]: CACSL2BoogieTranslator took 419.25ms. Allocated memory is still 142.6MB. Free memory was 109.6MB in the beginning and 86.3MB in the end (delta: 23.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-08 17:22:22,228 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.99ms. Allocated memory is still 142.6MB. Free memory was 86.3MB in the beginning and 84.1MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 17:22:22,228 INFO L158 Benchmark]: Boogie Preprocessor took 34.43ms. Allocated memory is still 142.6MB. Free memory was 84.1MB in the beginning and 81.2MB in the end (delta: 2.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-08 17:22:22,229 INFO L158 Benchmark]: IcfgBuilder took 557.23ms. Allocated memory is still 142.6MB. Free memory was 81.2MB in the beginning and 95.2MB in the end (delta: -14.1MB). Peak memory consumption was 47.7MB. Max. memory is 16.1GB. [2025-03-08 17:22:22,229 INFO L158 Benchmark]: TraceAbstraction took 7886.15ms. Allocated memory was 142.6MB in the beginning and 1.1GB in the end (delta: 931.1MB). Free memory was 95.2MB in the beginning and 828.8MB in the end (delta: -733.6MB). Peak memory consumption was 195.6MB. Max. memory is 16.1GB. [2025-03-08 17:22:22,229 INFO L158 Benchmark]: Witness Printer took 114.11ms. Allocated memory is still 1.1GB. Free memory was 828.8MB in the beginning and 812.0MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-08 17:22:22,230 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 201.3MB. Free memory is still 126.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 419.25ms. Allocated memory is still 142.6MB. Free memory was 109.6MB in the beginning and 86.3MB in the end (delta: 23.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.99ms. Allocated memory is still 142.6MB. Free memory was 86.3MB in the beginning and 84.1MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 34.43ms. Allocated memory is still 142.6MB. Free memory was 84.1MB in the beginning and 81.2MB in the end (delta: 2.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 557.23ms. Allocated memory is still 142.6MB. Free memory was 81.2MB in the beginning and 95.2MB in the end (delta: -14.1MB). Peak memory consumption was 47.7MB. Max. memory is 16.1GB. * TraceAbstraction took 7886.15ms. Allocated memory was 142.6MB in the beginning and 1.1GB in the end (delta: 931.1MB). Free memory was 95.2MB in the beginning and 828.8MB in the end (delta: -733.6MB). Peak memory consumption was 195.6MB. Max. memory is 16.1GB. * Witness Printer took 114.11ms. Allocated memory is still 1.1GB. Free memory was 828.8MB in the beginning and 812.0MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L709] 0 int __unbuffered_cnt = 0; [L711] 0 int __unbuffered_p2_EAX = 0; [L713] 0 int __unbuffered_p2_EBX = 0; [L714] 0 _Bool main$tmp_guard0; [L715] 0 _Bool main$tmp_guard1; [L717] 0 int x = 0; [L719] 0 int y = 0; [L720] 0 _Bool y$flush_delayed; [L721] 0 int y$mem_tmp; [L722] 0 _Bool y$r_buff0_thd0; [L723] 0 _Bool y$r_buff0_thd1; [L724] 0 _Bool y$r_buff0_thd2; [L725] 0 _Bool y$r_buff0_thd3; [L726] 0 _Bool y$r_buff1_thd0; [L727] 0 _Bool y$r_buff1_thd1; [L728] 0 _Bool y$r_buff1_thd2; [L729] 0 _Bool y$r_buff1_thd3; [L730] 0 _Bool y$read_delayed; [L731] 0 int *y$read_delayed_var; [L732] 0 int y$w_buff0; [L733] 0 _Bool y$w_buff0_used; [L734] 0 int y$w_buff1; [L735] 0 _Bool y$w_buff1_used; [L736] 0 _Bool weak$$choice0; [L737] 0 _Bool weak$$choice2; [L828] 0 pthread_t t2393; [L829] FCALL, FORK 0 pthread_create(&t2393, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, main$tmp_guard0=0, main$tmp_guard1=0, t2393=-3, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0] [L830] 0 pthread_t t2394; [L831] FCALL, FORK 0 pthread_create(&t2394, ((void *)0), P1, ((void *)0)) VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, main$tmp_guard0=0, main$tmp_guard1=0, t2393=-3, t2394=-2, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0] [L832] 0 pthread_t t2395; [L833] FCALL, FORK 0 pthread_create(&t2395, ((void *)0), P2, ((void *)0)) VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, main$tmp_guard0=0, main$tmp_guard1=0, t2393=-3, t2394=-2, t2395=-1, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0] [L741] 1 y$w_buff1 = y$w_buff0 [L742] 1 y$w_buff0 = 1 [L743] 1 y$w_buff1_used = y$w_buff0_used [L744] 1 y$w_buff0_used = (_Bool)1 [L745] CALL 1 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L18] COND FALSE 1 !(!expression) [L745] RET 1 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L746] 1 y$r_buff1_thd0 = y$r_buff0_thd0 [L747] 1 y$r_buff1_thd1 = y$r_buff0_thd1 [L748] 1 y$r_buff1_thd2 = y$r_buff0_thd2 [L749] 1 y$r_buff1_thd3 = y$r_buff0_thd3 [L750] 1 y$r_buff0_thd1 = (_Bool)1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0] [L753] 1 x = 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0] [L770] 2 x = 2 VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0] [L787] 3 __unbuffered_p2_EAX = x VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p2_EAX=2, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0] [L790] 3 weak$$choice0 = __VERIFIER_nondet_bool() [L791] 3 weak$$choice2 = __VERIFIER_nondet_bool() [L792] 3 y$flush_delayed = weak$$choice2 [L793] 3 y$mem_tmp = y [L794] 3 y = !y$w_buff0_used || !y$r_buff0_thd3 && !y$w_buff1_used || !y$r_buff0_thd3 && !y$r_buff1_thd3 ? y : (y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : y$w_buff1) [L795] 3 y$w_buff0 = weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd3 && !y$w_buff1_used || !y$r_buff0_thd3 && !y$r_buff1_thd3 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : y$w_buff0)) [L796] 3 y$w_buff1 = weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd3 && !y$w_buff1_used || !y$r_buff0_thd3 && !y$r_buff1_thd3 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff1 : y$w_buff1)) [L797] 3 y$w_buff0_used = weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd3 && !y$w_buff1_used || !y$r_buff0_thd3 && !y$r_buff1_thd3 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$w_buff0_used)) [L798] 3 y$w_buff1_used = weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd3 && !y$w_buff1_used || !y$r_buff0_thd3 && !y$r_buff1_thd3 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : (_Bool)0)) [L799] 3 y$r_buff0_thd3 = weak$$choice2 ? y$r_buff0_thd3 : (!y$w_buff0_used || !y$r_buff0_thd3 && !y$w_buff1_used || !y$r_buff0_thd3 && !y$r_buff1_thd3 ? y$r_buff0_thd3 : (y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$r_buff0_thd3)) [L800] 3 y$r_buff1_thd3 = weak$$choice2 ? y$r_buff1_thd3 : (!y$w_buff0_used || !y$r_buff0_thd3 && !y$w_buff1_used || !y$r_buff0_thd3 && !y$r_buff1_thd3 ? y$r_buff1_thd3 : (y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : (_Bool)0)) [L801] 3 __unbuffered_p2_EBX = y [L802] 3 y = y$flush_delayed ? y$mem_tmp : y [L803] 3 y$flush_delayed = (_Bool)0 VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p2_EAX=2, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=1, weak$$choice2=1, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0] [L773] 2 y = y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L774] 2 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L775] 2 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$w_buff1_used [L776] 2 y$r_buff0_thd2 = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L777] 2 y$r_buff1_thd2 = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$r_buff1_thd2 VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p2_EAX=2, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=1, weak$$choice2=1, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0] [L780] 2 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=1, __unbuffered_p2_EAX=2, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=1, weak$$choice2=1, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0] [L806] 3 y = y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd3 ? y$w_buff1 : y) [L807] 3 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$w_buff0_used [L808] 3 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$w_buff1_used [L809] 3 y$r_buff0_thd3 = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$r_buff0_thd3 [L810] 3 y$r_buff1_thd3 = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$r_buff1_thd3 VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=1, __unbuffered_p2_EAX=2, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=1, weak$$choice2=1, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0] [L756] 1 y = y$w_buff0_used && y$r_buff0_thd1 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd1 ? y$w_buff1 : y) [L757] 1 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$w_buff0_used [L758] 1 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd1 || y$w_buff1_used && y$r_buff1_thd1 ? (_Bool)0 : y$w_buff1_used [L759] 1 y$r_buff0_thd1 = y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$r_buff0_thd1 [L760] 1 y$r_buff1_thd1 = y$w_buff0_used && y$r_buff0_thd1 || y$w_buff1_used && y$r_buff1_thd1 ? (_Bool)0 : y$r_buff1_thd1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=1, __unbuffered_p2_EAX=2, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=1, weak$$choice2=1, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=1] [L813] 3 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=2, __unbuffered_p2_EAX=2, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=1, weak$$choice2=1, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=1] [L763] 1 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=3, __unbuffered_p2_EAX=2, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=1, weak$$choice2=1, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=1] [L835] 0 main$tmp_guard0 = __unbuffered_cnt == 3 VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=3, __unbuffered_p2_EAX=2, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t2393=-3, t2394=-2, t2395=-1, weak$$choice0=1, weak$$choice2=1, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=1] [L837] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L837] RET 0 assume_abort_if_not(main$tmp_guard0) [L839] 0 y = y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L840] 0 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L841] 0 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L842] 0 y$r_buff0_thd0 = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L843] 0 y$r_buff1_thd0 = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=3, __unbuffered_p2_EAX=2, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t2393=-3, t2394=-2, t2395=-1, weak$$choice0=1, weak$$choice2=1, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=1] [L846] 0 main$tmp_guard1 = !(x == 2 && __unbuffered_p2_EAX == 2 && __unbuffered_p2_EBX == 0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=3, __unbuffered_p2_EAX=2, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t2393=-3, t2394=-2, t2395=-1, weak$$choice0=1, weak$$choice2=1, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=1] [L848] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(expression)=0, __unbuffered_cnt=3, __unbuffered_p2_EAX=2, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, expression=0, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=1, weak$$choice2=1, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=1] [L18] 0 reach_error() VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(expression)=0, __unbuffered_cnt=3, __unbuffered_p2_EAX=2, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, expression=0, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=1, weak$$choice2=1, x=2, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=1] - UnprovableResult [Line: 18]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 833]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 829]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 831]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 62 locations, 59 edges, 6 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: 7.7s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 5.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 552 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 548 mSDsluCounter, 30 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 29 mSDsCounter, 25 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1282 IncrementalHoareTripleChecker+Invalid, 1307 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 25 mSolverCounterUnsat, 1 mSDtfsCounter, 1282 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=197occurred in iteration=7, InterpolantAutomatonStates: 51, 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, 0.3s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 169 NumberOfCodeBlocks, 169 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 133 ConstructedInterpolants, 0 QuantifiedInterpolants, 586 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 RESULT: Ultimate proved your program to be incorrect! [2025-03-08 17:22:22,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE