./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/mix017_power.opt_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/mix017_power.opt_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 c394bf0b454616c76d3ba114fe7f9b161b2a3a1a85dec23beec05d3a021c1c91 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 17:16:46,852 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 17:16:46,906 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 17:16:46,909 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 17:16:46,911 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 17:16:46,932 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 17:16:46,933 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 17:16:46,933 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 17:16:46,934 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 17:16:46,934 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 17:16:46,934 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 17:16:46,934 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 17:16:46,934 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 17:16:46,935 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 17:16:46,935 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 17:16:46,936 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 17:16:46,936 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 17:16:46,936 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 17:16:46,936 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 17:16:46,936 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 17:16:46,936 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 17:16:46,936 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 17:16:46,936 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 17:16:46,936 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 17:16:46,936 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 17:16:46,936 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 17:16:46,936 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 17:16:46,936 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 17:16:46,936 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 17:16:46,936 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 17:16:46,936 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 17:16:46,936 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 17:16:46,936 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 17:16:46,936 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 17:16:46,936 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 17:16:46,936 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 17:16:46,936 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 17:16:46,937 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 17:16:46,937 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 17:16:46,937 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 17:16:46,937 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 17:16:46,937 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 17:16:46,937 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 17:16:46,937 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 -> c394bf0b454616c76d3ba114fe7f9b161b2a3a1a85dec23beec05d3a021c1c91 [2025-03-08 17:16:47,144 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 17:16:47,149 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 17:16:47,151 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 17:16:47,152 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 17:16:47,152 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 17:16:47,153 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/mix017_power.opt_rmo.opt.i [2025-03-08 17:16:48,310 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46e4d0357/e90bee9a757a404981d81d111df010ef/FLAGbc7089b22 [2025-03-08 17:16:48,618 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 17:16:48,623 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix017_power.opt_rmo.opt.i [2025-03-08 17:16:48,638 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46e4d0357/e90bee9a757a404981d81d111df010ef/FLAGbc7089b22 [2025-03-08 17:16:48,859 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46e4d0357/e90bee9a757a404981d81d111df010ef [2025-03-08 17:16:48,861 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 17:16:48,862 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 17:16:48,863 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 17:16:48,863 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 17:16:48,866 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 17:16:48,866 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:16:48" (1/1) ... [2025-03-08 17:16:48,867 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ae8d271 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:16:48, skipping insertion in model container [2025-03-08 17:16:48,867 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:16:48" (1/1) ... [2025-03-08 17:16:48,891 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 17:16:49,016 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/mix017_power.opt_rmo.opt.i[958,971] [2025-03-08 17:16:49,181 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 17:16:49,189 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 17:16:49,200 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/mix017_power.opt_rmo.opt.i[958,971] [2025-03-08 17:16:49,238 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 17:16:49,264 INFO L204 MainTranslator]: Completed translation [2025-03-08 17:16:49,264 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:16:49 WrapperNode [2025-03-08 17:16:49,265 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 17:16:49,265 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 17:16:49,265 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 17:16:49,266 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 17:16:49,270 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:16:49" (1/1) ... [2025-03-08 17:16:49,283 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:16:49" (1/1) ... [2025-03-08 17:16:49,301 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 129 [2025-03-08 17:16:49,302 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 17:16:49,302 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 17:16:49,302 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 17:16:49,302 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 17:16:49,308 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:16:49" (1/1) ... [2025-03-08 17:16:49,309 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:16:49" (1/1) ... [2025-03-08 17:16:49,311 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:16:49" (1/1) ... [2025-03-08 17:16:49,321 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 17:16:49,322 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:16:49" (1/1) ... [2025-03-08 17:16:49,322 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:16:49" (1/1) ... [2025-03-08 17:16:49,326 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:16:49" (1/1) ... [2025-03-08 17:16:49,327 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:16:49" (1/1) ... [2025-03-08 17:16:49,328 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:16:49" (1/1) ... [2025-03-08 17:16:49,329 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:16:49" (1/1) ... [2025-03-08 17:16:49,331 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 17:16:49,331 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 17:16:49,331 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 17:16:49,332 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 17:16:49,332 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:16:49" (1/1) ... [2025-03-08 17:16:49,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 17:16:49,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 17:16:49,363 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 17:16:49,367 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 17:16:49,390 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-08 17:16:49,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 17:16:49,390 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-03-08 17:16:49,390 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-03-08 17:16:49,390 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-03-08 17:16:49,390 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-03-08 17:16:49,390 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-03-08 17:16:49,390 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-03-08 17:16:49,390 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2025-03-08 17:16:49,390 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2025-03-08 17:16:49,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 17:16:49,390 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-08 17:16:49,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 17:16:49,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 17:16:49,391 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 17:16:49,491 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 17:16:49,492 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 17:16:49,736 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-08 17:16:49,737 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 17:16:49,919 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 17:16:49,919 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 17:16:49,920 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:16:49 BoogieIcfgContainer [2025-03-08 17:16:49,920 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 17:16:49,921 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 17:16:49,922 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 17:16:49,926 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 17:16:49,926 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 05:16:48" (1/3) ... [2025-03-08 17:16:49,927 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f3c37d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:16:49, skipping insertion in model container [2025-03-08 17:16:49,927 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:16:49" (2/3) ... [2025-03-08 17:16:49,928 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f3c37d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:16:49, skipping insertion in model container [2025-03-08 17:16:49,928 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:16:49" (3/3) ... [2025-03-08 17:16:49,929 INFO L128 eAbstractionObserver]: Analyzing ICFG mix017_power.opt_rmo.opt.i [2025-03-08 17:16:49,940 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 17:16:49,943 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG mix017_power.opt_rmo.opt.i that has 5 procedures, 49 locations, 1 initial locations, 0 loop locations, and 2 error locations. [2025-03-08 17:16:49,943 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-08 17:16:49,991 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-08 17:16:50,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 49 transitions, 114 flow [2025-03-08 17:16:50,044 INFO L124 PetriNetUnfolderBase]: 1/45 cut-off events. [2025-03-08 17:16:50,046 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-08 17:16:50,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 45 events. 1/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 99 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 49. Up to 2 conditions per place. [2025-03-08 17:16:50,051 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 49 transitions, 114 flow [2025-03-08 17:16:50,053 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 45 transitions, 102 flow [2025-03-08 17:16:50,061 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 17:16:50,071 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;@77ee2df8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 17:16:50,074 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2025-03-08 17:16:50,081 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-08 17:16:50,082 INFO L124 PetriNetUnfolderBase]: 0/18 cut-off events. [2025-03-08 17:16:50,082 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-08 17:16:50,082 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:16:50,082 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:16:50,083 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-08 17:16:50,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:16:50,087 INFO L85 PathProgramCache]: Analyzing trace with hash 887480527, now seen corresponding path program 1 times [2025-03-08 17:16:50,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:16:50,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770718926] [2025-03-08 17:16:50,094 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:16:50,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:16:50,159 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-08 17:16:50,188 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-08 17:16:50,188 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:16:50,188 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:16:50,435 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 17:16:50,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:16:50,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770718926] [2025-03-08 17:16:50,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770718926] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:16:50,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:16:50,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-08 17:16:50,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676162529] [2025-03-08 17:16:50,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:16:50,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 17:16:50,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:16:50,460 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 17:16:50,461 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 17:16:50,462 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2025-03-08 17:16:50,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 45 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 17:16:50,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:16:50,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2025-03-08 17:16:50,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:16:53,925 INFO L124 PetriNetUnfolderBase]: 40307/53603 cut-off events. [2025-03-08 17:16:53,925 INFO L125 PetriNetUnfolderBase]: For 235/235 co-relation queries the response was YES. [2025-03-08 17:16:54,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107047 conditions, 53603 events. 40307/53603 cut-off events. For 235/235 co-relation queries the response was YES. Maximal size of possible extension queue 1626. Compared 316946 event pairs, 5087 based on Foata normal form. 1476/54806 useless extension candidates. Maximal degree in co-relation 107035. Up to 45661 conditions per place. [2025-03-08 17:16:54,198 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 57 selfloop transitions, 2 changer transitions 2/68 dead transitions. [2025-03-08 17:16:54,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 68 transitions, 273 flow [2025-03-08 17:16:54,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 17:16:54,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-08 17:16:54,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2025-03-08 17:16:54,207 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6598639455782312 [2025-03-08 17:16:54,209 INFO L175 Difference]: Start difference. First operand has 57 places, 45 transitions, 102 flow. Second operand 3 states and 97 transitions. [2025-03-08 17:16:54,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 68 transitions, 273 flow [2025-03-08 17:16:54,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 68 transitions, 268 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-08 17:16:54,216 INFO L231 Difference]: Finished difference. Result has 54 places, 42 transitions, 96 flow [2025-03-08 17:16:54,217 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=54, PETRI_TRANSITIONS=42} [2025-03-08 17:16:54,219 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, -3 predicate places. [2025-03-08 17:16:54,219 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 42 transitions, 96 flow [2025-03-08 17:16:54,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 17:16:54,220 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:16:54,220 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:16:54,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 17:16:54,220 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-08 17:16:54,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:16:54,221 INFO L85 PathProgramCache]: Analyzing trace with hash 710183437, now seen corresponding path program 1 times [2025-03-08 17:16:54,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:16:54,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617373825] [2025-03-08 17:16:54,221 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:16:54,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:16:54,234 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-08 17:16:54,263 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-08 17:16:54,263 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:16:54,263 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:16:54,405 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 17:16:54,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:16:54,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617373825] [2025-03-08 17:16:54,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617373825] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:16:54,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:16:54,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 17:16:54,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325520263] [2025-03-08 17:16:54,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:16:54,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 17:16:54,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:16:54,407 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 17:16:54,407 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 17:16:54,407 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2025-03-08 17:16:54,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 96 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:16:54,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:16:54,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2025-03-08 17:16:54,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:16:56,899 INFO L124 PetriNetUnfolderBase]: 32715/47347 cut-off events. [2025-03-08 17:16:56,899 INFO L125 PetriNetUnfolderBase]: For 1688/1688 co-relation queries the response was YES. [2025-03-08 17:16:57,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93285 conditions, 47347 events. 32715/47347 cut-off events. For 1688/1688 co-relation queries the response was YES. Maximal size of possible extension queue 1589. Compared 324181 event pairs, 4407 based on Foata normal form. 1512/47652 useless extension candidates. Maximal degree in co-relation 93275. Up to 24941 conditions per place. [2025-03-08 17:16:57,405 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 74 selfloop transitions, 6 changer transitions 1/88 dead transitions. [2025-03-08 17:16:57,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 88 transitions, 360 flow [2025-03-08 17:16:57,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 17:16:57,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-08 17:16:57,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 127 transitions. [2025-03-08 17:16:57,409 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6479591836734694 [2025-03-08 17:16:57,409 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 96 flow. Second operand 4 states and 127 transitions. [2025-03-08 17:16:57,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 88 transitions, 360 flow [2025-03-08 17:16:57,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 88 transitions, 352 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-08 17:16:57,415 INFO L231 Difference]: Finished difference. Result has 56 places, 46 transitions, 134 flow [2025-03-08 17:16:57,415 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=134, PETRI_PLACES=56, PETRI_TRANSITIONS=46} [2025-03-08 17:16:57,415 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, -1 predicate places. [2025-03-08 17:16:57,416 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 46 transitions, 134 flow [2025-03-08 17:16:57,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:16:57,416 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:16:57,416 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:16:57,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 17:16:57,417 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-08 17:16:57,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:16:57,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1453627104, now seen corresponding path program 1 times [2025-03-08 17:16:57,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:16:57,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936768683] [2025-03-08 17:16:57,419 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:16:57,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:16:57,431 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-08 17:16:57,453 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-08 17:16:57,454 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:16:57,456 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:16:57,575 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 17:16:57,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:16:57,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936768683] [2025-03-08 17:16:57,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936768683] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:16:57,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:16:57,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 17:16:57,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125867160] [2025-03-08 17:16:57,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:16:57,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 17:16:57,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:16:57,578 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 17:16:57,578 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-08 17:16:57,578 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2025-03-08 17:16:57,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 46 transitions, 134 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 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 17:16:57,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:16:57,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2025-03-08 17:16:57,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:16:58,916 INFO L124 PetriNetUnfolderBase]: 21403/30851 cut-off events. [2025-03-08 17:16:58,916 INFO L125 PetriNetUnfolderBase]: For 6132/6132 co-relation queries the response was YES. [2025-03-08 17:16:58,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68739 conditions, 30851 events. 21403/30851 cut-off events. For 6132/6132 co-relation queries the response was YES. Maximal size of possible extension queue 853. Compared 194115 event pairs, 2563 based on Foata normal form. 1192/31444 useless extension candidates. Maximal degree in co-relation 68727. Up to 11261 conditions per place. [2025-03-08 17:16:59,066 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 96 selfloop transitions, 10 changer transitions 1/114 dead transitions. [2025-03-08 17:16:59,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 114 transitions, 513 flow [2025-03-08 17:16:59,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-08 17:16:59,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-08 17:16:59,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 164 transitions. [2025-03-08 17:16:59,068 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6693877551020408 [2025-03-08 17:16:59,068 INFO L175 Difference]: Start difference. First operand has 56 places, 46 transitions, 134 flow. Second operand 5 states and 164 transitions. [2025-03-08 17:16:59,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 114 transitions, 513 flow [2025-03-08 17:16:59,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 114 transitions, 502 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-03-08 17:16:59,076 INFO L231 Difference]: Finished difference. Result has 60 places, 50 transitions, 186 flow [2025-03-08 17:16:59,076 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=186, PETRI_PLACES=60, PETRI_TRANSITIONS=50} [2025-03-08 17:16:59,077 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 3 predicate places. [2025-03-08 17:16:59,077 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 50 transitions, 186 flow [2025-03-08 17:16:59,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 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 17:16:59,077 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:16:59,077 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] [2025-03-08 17:16:59,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 17:16:59,077 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-08 17:16:59,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:16:59,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1239840213, now seen corresponding path program 1 times [2025-03-08 17:16:59,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:16:59,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468144920] [2025-03-08 17:16:59,078 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:16:59,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:16:59,089 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-08 17:16:59,131 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-08 17:16:59,135 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:16:59,135 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:16:59,272 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 17:16:59,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:16:59,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468144920] [2025-03-08 17:16:59,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468144920] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:16:59,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:16:59,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 17:16:59,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252648445] [2025-03-08 17:16:59,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:16:59,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 17:16:59,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:16:59,274 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 17:16:59,274 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-03-08 17:16:59,275 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2025-03-08 17:16:59,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 50 transitions, 186 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 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 17:16:59,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:16:59,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2025-03-08 17:16:59,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:17:00,462 INFO L124 PetriNetUnfolderBase]: 13227/18611 cut-off events. [2025-03-08 17:17:00,462 INFO L125 PetriNetUnfolderBase]: For 11662/11662 co-relation queries the response was YES. [2025-03-08 17:17:00,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45727 conditions, 18611 events. 13227/18611 cut-off events. For 11662/11662 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 102402 event pairs, 2215 based on Foata normal form. 584/19028 useless extension candidates. Maximal degree in co-relation 45713. Up to 5388 conditions per place. [2025-03-08 17:17:00,543 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 116 selfloop transitions, 14 changer transitions 1/138 dead transitions. [2025-03-08 17:17:00,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 138 transitions, 672 flow [2025-03-08 17:17:00,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 17:17:00,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-08 17:17:00,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 199 transitions. [2025-03-08 17:17:00,545 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6768707482993197 [2025-03-08 17:17:00,545 INFO L175 Difference]: Start difference. First operand has 60 places, 50 transitions, 186 flow. Second operand 6 states and 199 transitions. [2025-03-08 17:17:00,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 138 transitions, 672 flow [2025-03-08 17:17:00,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 138 transitions, 642 flow, removed 5 selfloop flow, removed 4 redundant places. [2025-03-08 17:17:00,683 INFO L231 Difference]: Finished difference. Result has 63 places, 54 transitions, 236 flow [2025-03-08 17:17:00,683 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=236, PETRI_PLACES=63, PETRI_TRANSITIONS=54} [2025-03-08 17:17:00,684 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 6 predicate places. [2025-03-08 17:17:00,684 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 54 transitions, 236 flow [2025-03-08 17:17:00,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 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 17:17:00,684 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:17:00,684 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:17:00,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 17:17:00,684 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-08 17:17:00,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:17:00,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1076230306, now seen corresponding path program 1 times [2025-03-08 17:17:00,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:17:00,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123055895] [2025-03-08 17:17:00,685 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:17:00,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:17:00,693 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-03-08 17:17:00,724 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-03-08 17:17:00,725 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:17:00,725 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:17:00,934 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 17:17:00,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:17:00,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123055895] [2025-03-08 17:17:00,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123055895] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:17:00,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:17:00,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 17:17:00,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278507548] [2025-03-08 17:17:00,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:17:00,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 17:17:00,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:17:00,935 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 17:17:00,935 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-03-08 17:17:00,936 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 49 [2025-03-08 17:17:00,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 54 transitions, 236 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 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 17:17:00,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:17:00,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 49 [2025-03-08 17:17:00,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:17:01,980 INFO L124 PetriNetUnfolderBase]: 10367/14231 cut-off events. [2025-03-08 17:17:01,980 INFO L125 PetriNetUnfolderBase]: For 11350/11350 co-relation queries the response was YES. [2025-03-08 17:17:02,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36352 conditions, 14231 events. 10367/14231 cut-off events. For 11350/11350 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 73849 event pairs, 2043 based on Foata normal form. 152/14352 useless extension candidates. Maximal degree in co-relation 36337. Up to 5376 conditions per place. [2025-03-08 17:17:02,055 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 100 selfloop transitions, 18 changer transitions 1/126 dead transitions. [2025-03-08 17:17:02,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 126 transitions, 634 flow [2025-03-08 17:17:02,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-08 17:17:02,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-08 17:17:02,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 198 transitions. [2025-03-08 17:17:02,057 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.577259475218659 [2025-03-08 17:17:02,057 INFO L175 Difference]: Start difference. First operand has 63 places, 54 transitions, 236 flow. Second operand 7 states and 198 transitions. [2025-03-08 17:17:02,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 126 transitions, 634 flow [2025-03-08 17:17:02,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 126 transitions, 588 flow, removed 9 selfloop flow, removed 5 redundant places. [2025-03-08 17:17:02,239 INFO L231 Difference]: Finished difference. Result has 66 places, 54 transitions, 246 flow [2025-03-08 17:17:02,240 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=246, PETRI_PLACES=66, PETRI_TRANSITIONS=54} [2025-03-08 17:17:02,240 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 9 predicate places. [2025-03-08 17:17:02,240 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 54 transitions, 246 flow [2025-03-08 17:17:02,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 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 17:17:02,240 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:17:02,241 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:17:02,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 17:17:02,241 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-08 17:17:02,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:17:02,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1141707127, now seen corresponding path program 1 times [2025-03-08 17:17:02,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:17:02,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850364507] [2025-03-08 17:17:02,242 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 17:17:02,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:17:02,251 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-03-08 17:17:02,313 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-03-08 17:17:02,314 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:17:02,315 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:17:02,586 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 17:17:02,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:17:02,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850364507] [2025-03-08 17:17:02,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850364507] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:17:02,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:17:02,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 17:17:02,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436434983] [2025-03-08 17:17:02,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:17:02,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 17:17:02,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:17:02,587 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 17:17:02,587 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 17:17:02,592 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 49 [2025-03-08 17:17:02,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 54 transitions, 246 flow. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:17:02,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:17:02,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 49 [2025-03-08 17:17:02,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:17:03,910 INFO L124 PetriNetUnfolderBase]: 15441/21185 cut-off events. [2025-03-08 17:17:03,911 INFO L125 PetriNetUnfolderBase]: For 16602/16602 co-relation queries the response was YES. [2025-03-08 17:17:03,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54475 conditions, 21185 events. 15441/21185 cut-off events. For 16602/16602 co-relation queries the response was YES. Maximal size of possible extension queue 692. Compared 117514 event pairs, 1821 based on Foata normal form. 16/21195 useless extension candidates. Maximal degree in co-relation 54459. Up to 11428 conditions per place. [2025-03-08 17:17:04,018 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 72 selfloop transitions, 1 changer transitions 50/129 dead transitions. [2025-03-08 17:17:04,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 129 transitions, 830 flow [2025-03-08 17:17:04,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 17:17:04,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-08 17:17:04,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 154 transitions. [2025-03-08 17:17:04,020 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2025-03-08 17:17:04,020 INFO L175 Difference]: Start difference. First operand has 66 places, 54 transitions, 246 flow. Second operand 6 states and 154 transitions. [2025-03-08 17:17:04,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 129 transitions, 830 flow [2025-03-08 17:17:04,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 129 transitions, 605 flow, removed 34 selfloop flow, removed 10 redundant places. [2025-03-08 17:17:04,228 INFO L231 Difference]: Finished difference. Result has 65 places, 54 transitions, 161 flow [2025-03-08 17:17:04,228 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=161, PETRI_PLACES=65, PETRI_TRANSITIONS=54} [2025-03-08 17:17:04,228 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 8 predicate places. [2025-03-08 17:17:04,228 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 54 transitions, 161 flow [2025-03-08 17:17:04,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:17:04,229 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:17:04,229 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:17:04,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 17:17:04,229 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-08 17:17:04,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:17:04,229 INFO L85 PathProgramCache]: Analyzing trace with hash -339960249, now seen corresponding path program 2 times [2025-03-08 17:17:04,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:17:04,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393822482] [2025-03-08 17:17:04,229 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 17:17:04,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:17:04,237 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 37 statements into 1 equivalence classes. [2025-03-08 17:17:04,302 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-03-08 17:17:04,303 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-08 17:17:04,303 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:17:04,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 17:17:04,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:17:04,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393822482] [2025-03-08 17:17:04,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393822482] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:17:04,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:17:04,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-08 17:17:04,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857874705] [2025-03-08 17:17:04,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:17:04,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 17:17:04,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:17:04,530 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 17:17:04,530 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-08 17:17:04,534 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 49 [2025-03-08 17:17:04,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 54 transitions, 161 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 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 17:17:04,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:17:04,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 49 [2025-03-08 17:17:04,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:17:05,500 INFO L124 PetriNetUnfolderBase]: 13385/18598 cut-off events. [2025-03-08 17:17:05,501 INFO L125 PetriNetUnfolderBase]: For 4340/4340 co-relation queries the response was YES. [2025-03-08 17:17:05,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42036 conditions, 18598 events. 13385/18598 cut-off events. For 4340/4340 co-relation queries the response was YES. Maximal size of possible extension queue 636. Compared 101455 event pairs, 3301 based on Foata normal form. 16/18612 useless extension candidates. Maximal degree in co-relation 42022. Up to 11002 conditions per place. [2025-03-08 17:17:05,570 INFO L140 encePairwiseOnDemand]: 39/49 looper letters, 62 selfloop transitions, 4 changer transitions 80/152 dead transitions. [2025-03-08 17:17:05,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 152 transitions, 736 flow [2025-03-08 17:17:05,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-08 17:17:05,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-08 17:17:05,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 197 transitions. [2025-03-08 17:17:05,571 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5025510204081632 [2025-03-08 17:17:05,572 INFO L175 Difference]: Start difference. First operand has 65 places, 54 transitions, 161 flow. Second operand 8 states and 197 transitions. [2025-03-08 17:17:05,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 152 transitions, 736 flow [2025-03-08 17:17:05,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 152 transitions, 721 flow, removed 5 selfloop flow, removed 4 redundant places. [2025-03-08 17:17:05,576 INFO L231 Difference]: Finished difference. Result has 71 places, 56 transitions, 192 flow [2025-03-08 17:17:05,576 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=192, PETRI_PLACES=71, PETRI_TRANSITIONS=56} [2025-03-08 17:17:05,577 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 14 predicate places. [2025-03-08 17:17:05,577 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 56 transitions, 192 flow [2025-03-08 17:17:05,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 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 17:17:05,577 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:17:05,577 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:17:05,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-08 17:17:05,577 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-08 17:17:05,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:17:05,578 INFO L85 PathProgramCache]: Analyzing trace with hash 413170295, now seen corresponding path program 3 times [2025-03-08 17:17:05,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:17:05,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712627926] [2025-03-08 17:17:05,578 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 17:17:05,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:17:05,588 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 37 statements into 1 equivalence classes. [2025-03-08 17:17:05,628 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-03-08 17:17:05,629 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-08 17:17:05,629 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:17:05,793 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 17:17:05,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:17:05,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712627926] [2025-03-08 17:17:05,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712627926] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:17:05,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:17:05,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-08 17:17:05,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481417178] [2025-03-08 17:17:05,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:17:05,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 17:17:05,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:17:05,796 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 17:17:05,796 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-03-08 17:17:05,803 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 49 [2025-03-08 17:17:05,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 56 transitions, 192 flow. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:17:05,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:17:05,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 49 [2025-03-08 17:17:05,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:17:06,792 INFO L124 PetriNetUnfolderBase]: 12315/17330 cut-off events. [2025-03-08 17:17:06,792 INFO L125 PetriNetUnfolderBase]: For 9208/9208 co-relation queries the response was YES. [2025-03-08 17:17:06,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43790 conditions, 17330 events. 12315/17330 cut-off events. For 9208/9208 co-relation queries the response was YES. Maximal size of possible extension queue 662. Compared 97312 event pairs, 3383 based on Foata normal form. 16/17344 useless extension candidates. Maximal degree in co-relation 43772. Up to 8880 conditions per place. [2025-03-08 17:17:06,832 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 51 selfloop transitions, 1 changer transitions 64/122 dead transitions. [2025-03-08 17:17:06,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 122 transitions, 646 flow [2025-03-08 17:17:06,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 17:17:06,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-08 17:17:06,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 145 transitions. [2025-03-08 17:17:06,833 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4931972789115646 [2025-03-08 17:17:06,833 INFO L175 Difference]: Start difference. First operand has 71 places, 56 transitions, 192 flow. Second operand 6 states and 145 transitions. [2025-03-08 17:17:06,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 122 transitions, 646 flow [2025-03-08 17:17:06,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 122 transitions, 636 flow, removed 5 selfloop flow, removed 3 redundant places. [2025-03-08 17:17:06,836 INFO L231 Difference]: Finished difference. Result has 73 places, 54 transitions, 186 flow [2025-03-08 17:17:06,836 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=186, PETRI_PLACES=73, PETRI_TRANSITIONS=54} [2025-03-08 17:17:06,836 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 16 predicate places. [2025-03-08 17:17:06,836 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 54 transitions, 186 flow [2025-03-08 17:17:06,837 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 17:17:06,837 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:17:06,837 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:17:06,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-08 17:17:06,837 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-08 17:17:06,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:17:06,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1453232515, now seen corresponding path program 4 times [2025-03-08 17:17:06,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:17:06,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943561587] [2025-03-08 17:17:06,837 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 17:17:06,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:17:06,844 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 37 statements into 2 equivalence classes. [2025-03-08 17:17:06,855 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 37 of 37 statements. [2025-03-08 17:17:06,855 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 17:17:06,855 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 17:17:07,554 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 17:17:07,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 17:17:07,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943561587] [2025-03-08 17:17:07,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943561587] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 17:17:07,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 17:17:07,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-08 17:17:07,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240288559] [2025-03-08 17:17:07,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 17:17:07,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-08 17:17:07,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 17:17:07,556 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-08 17:17:07,556 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-08 17:17:07,561 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 49 [2025-03-08 17:17:07,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 54 transitions, 186 flow. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 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 17:17:07,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 17:17:07,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 49 [2025-03-08 17:17:07,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 17:17:08,326 INFO L124 PetriNetUnfolderBase]: 8819/12536 cut-off events. [2025-03-08 17:17:08,326 INFO L125 PetriNetUnfolderBase]: For 7060/7060 co-relation queries the response was YES. [2025-03-08 17:17:08,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31502 conditions, 12536 events. 8819/12536 cut-off events. For 7060/7060 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 69008 event pairs, 1261 based on Foata normal form. 16/12550 useless extension candidates. Maximal degree in co-relation 31482. Up to 6264 conditions per place. [2025-03-08 17:17:08,381 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 67 selfloop transitions, 4 changer transitions 64/140 dead transitions. [2025-03-08 17:17:08,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 140 transitions, 728 flow [2025-03-08 17:17:08,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 17:17:08,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-08 17:17:08,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 196 transitions. [2025-03-08 17:17:08,382 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4 [2025-03-08 17:17:08,382 INFO L175 Difference]: Start difference. First operand has 73 places, 54 transitions, 186 flow. Second operand 10 states and 196 transitions. [2025-03-08 17:17:08,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 140 transitions, 728 flow [2025-03-08 17:17:08,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 140 transitions, 712 flow, removed 5 selfloop flow, removed 5 redundant places. [2025-03-08 17:17:08,387 INFO L231 Difference]: Finished difference. Result has 78 places, 53 transitions, 193 flow [2025-03-08 17:17:08,388 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=193, PETRI_PLACES=78, PETRI_TRANSITIONS=53} [2025-03-08 17:17:08,388 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 21 predicate places. [2025-03-08 17:17:08,388 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 53 transitions, 193 flow [2025-03-08 17:17:08,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 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 17:17:08,388 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 17:17:08,388 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 17:17:08,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-08 17:17:08,388 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-08 17:17:08,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 17:17:08,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1975650293, now seen corresponding path program 5 times [2025-03-08 17:17:08,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 17:17:08,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819570413] [2025-03-08 17:17:08,389 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 17:17:08,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 17:17:08,399 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 37 statements into 1 equivalence classes. [2025-03-08 17:17:08,422 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-03-08 17:17:08,422 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-08 17:17:08,422 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-08 17:17:08,422 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-08 17:17:08,426 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-03-08 17:17:08,465 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-03-08 17:17:08,465 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 17:17:08,465 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-08 17:17:08,495 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-08 17:17:08,496 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-08 17:17:08,497 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2025-03-08 17:17:08,498 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2025-03-08 17:17:08,498 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2025-03-08 17:17:08,498 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2025-03-08 17:17:08,498 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2025-03-08 17:17:08,498 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2025-03-08 17:17:08,498 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2025-03-08 17:17:08,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-08 17:17:08,498 INFO L422 BasicCegarLoop]: Path program histogram: [5, 1, 1, 1, 1, 1] [2025-03-08 17:17:08,580 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-08 17:17:08,581 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-08 17:17:08,588 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.03 05:17:08 BasicIcfg [2025-03-08 17:17:08,588 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-08 17:17:08,590 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-08 17:17:08,590 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-08 17:17:08,590 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-08 17:17:08,590 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:16:49" (3/4) ... [2025-03-08 17:17:08,591 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2025-03-08 17:17:08,667 INFO L127 tionWitnessGenerator]: Generated YAML witness of length 9. [2025-03-08 17:17:08,701 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-08 17:17:08,701 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-08 17:17:08,701 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-08 17:17:08,702 INFO L158 Benchmark]: Toolchain (without parser) took 19839.49ms. Allocated memory was 142.6MB in the beginning and 3.7GB in the end (delta: 3.6GB). Free memory was 104.1MB in the beginning and 2.0GB in the end (delta: -1.9GB). Peak memory consumption was 1.6GB. Max. memory is 16.1GB. [2025-03-08 17:17:08,702 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 201.3MB. Free memory was 125.9MB in the beginning and 125.6MB in the end (delta: 307.6kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 17:17:08,703 INFO L158 Benchmark]: CACSL2BoogieTranslator took 401.99ms. Allocated memory is still 142.6MB. Free memory was 104.1MB in the beginning and 80.7MB in the end (delta: 23.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-08 17:17:08,703 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.41ms. Allocated memory is still 142.6MB. Free memory was 80.7MB in the beginning and 78.5MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-08 17:17:08,704 INFO L158 Benchmark]: Boogie Preprocessor took 28.65ms. Allocated memory is still 142.6MB. Free memory was 78.5MB in the beginning and 75.5MB in the end (delta: 3.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-08 17:17:08,704 INFO L158 Benchmark]: IcfgBuilder took 588.30ms. Allocated memory is still 142.6MB. Free memory was 75.5MB in the beginning and 89.8MB in the end (delta: -14.3MB). Peak memory consumption was 47.8MB. Max. memory is 16.1GB. [2025-03-08 17:17:08,704 INFO L158 Benchmark]: TraceAbstraction took 18666.40ms. Allocated memory was 142.6MB in the beginning and 3.7GB in the end (delta: 3.6GB). Free memory was 89.0MB in the beginning and 2.0GB in the end (delta: -2.0GB). Peak memory consumption was 1.6GB. Max. memory is 16.1GB. [2025-03-08 17:17:08,705 INFO L158 Benchmark]: Witness Printer took 111.34ms. Allocated memory is still 3.7GB. Free memory was 2.0GB in the beginning and 2.0GB in the end (delta: 21.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-08 17:17:08,705 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 201.3MB. Free memory was 125.9MB in the beginning and 125.6MB in the end (delta: 307.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 401.99ms. Allocated memory is still 142.6MB. Free memory was 104.1MB in the beginning and 80.7MB in the end (delta: 23.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.41ms. Allocated memory is still 142.6MB. Free memory was 80.7MB in the beginning and 78.5MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 28.65ms. Allocated memory is still 142.6MB. Free memory was 78.5MB in the beginning and 75.5MB in the end (delta: 3.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 588.30ms. Allocated memory is still 142.6MB. Free memory was 75.5MB in the beginning and 89.8MB in the end (delta: -14.3MB). Peak memory consumption was 47.8MB. Max. memory is 16.1GB. * TraceAbstraction took 18666.40ms. Allocated memory was 142.6MB in the beginning and 3.7GB in the end (delta: 3.6GB). Free memory was 89.0MB in the beginning and 2.0GB in the end (delta: -2.0GB). Peak memory consumption was 1.6GB. Max. memory is 16.1GB. * Witness Printer took 111.34ms. Allocated memory is still 3.7GB. Free memory was 2.0GB in the beginning and 2.0GB in the end (delta: 21.0MB). Peak memory consumption was 25.2MB. 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: [L710] 0 int __unbuffered_cnt = 0; [L712] 0 int __unbuffered_p0_EAX = 0; [L714] 0 int __unbuffered_p1_EAX = 0; [L716] 0 int __unbuffered_p2_EAX = 0; [L718] 0 int __unbuffered_p3_EAX = 0; [L720] 0 int __unbuffered_p3_EBX = 0; [L722] 0 int a = 0; [L723] 0 _Bool main$tmp_guard0; [L724] 0 _Bool main$tmp_guard1; [L726] 0 int x = 0; [L728] 0 int y = 0; [L729] 0 _Bool y$flush_delayed; [L730] 0 int y$mem_tmp; [L731] 0 _Bool y$r_buff0_thd0; [L732] 0 _Bool y$r_buff0_thd1; [L733] 0 _Bool y$r_buff0_thd2; [L734] 0 _Bool y$r_buff0_thd3; [L735] 0 _Bool y$r_buff0_thd4; [L736] 0 _Bool y$r_buff1_thd0; [L737] 0 _Bool y$r_buff1_thd1; [L738] 0 _Bool y$r_buff1_thd2; [L739] 0 _Bool y$r_buff1_thd3; [L740] 0 _Bool y$r_buff1_thd4; [L741] 0 _Bool y$read_delayed; [L742] 0 int *y$read_delayed_var; [L743] 0 int y$w_buff0; [L744] 0 _Bool y$w_buff0_used; [L745] 0 int y$w_buff1; [L746] 0 _Bool y$w_buff1_used; [L748] 0 int z = 0; [L749] 0 _Bool weak$$choice0; [L750] 0 _Bool weak$$choice2; [L858] 0 pthread_t t437; [L859] FCALL, FORK 0 pthread_create(&t437, ((void *)0), P0, ((void *)0)) VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, main$tmp_guard0=0, main$tmp_guard1=0, t437=-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$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=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, z=0] [L860] 0 pthread_t t438; [L861] FCALL, FORK 0 pthread_create(&t438, ((void *)0), P1, ((void *)0)) VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, main$tmp_guard0=0, main$tmp_guard1=0, t437=-3, t438=-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$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=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, z=0] [L862] 0 pthread_t t439; [L863] FCALL, FORK 0 pthread_create(&t439, ((void *)0), P2, ((void *)0)) VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, main$tmp_guard0=0, main$tmp_guard1=0, t437=-3, t438=-2, t439=-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$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=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, z=0] [L864] 0 pthread_t t440; [L865] FCALL, FORK 0 pthread_create(&t440, ((void *)0), P3, ((void *)0)) VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, main$tmp_guard0=0, main$tmp_guard1=0, t437=-3, t438=-2, t439=-1, t440=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=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=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, z=0] [L797] 3 y$w_buff1 = y$w_buff0 [L798] 3 y$w_buff0 = 1 [L799] 3 y$w_buff1_used = y$w_buff0_used [L800] 3 y$w_buff0_used = (_Bool)1 [L801] CALL 3 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L18] COND FALSE 3 !(!expression) [L801] RET 3 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L802] 3 y$r_buff1_thd0 = y$r_buff0_thd0 [L803] 3 y$r_buff1_thd1 = y$r_buff0_thd1 [L804] 3 y$r_buff1_thd2 = y$r_buff0_thd2 [L805] 3 y$r_buff1_thd3 = y$r_buff0_thd3 [L806] 3 y$r_buff1_thd4 = y$r_buff0_thd4 [L807] 3 y$r_buff0_thd3 = (_Bool)1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=0, arg={0:0}, main$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=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=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, z=0] [L810] 3 __unbuffered_p2_EAX = z VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=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=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=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, z=0] [L827] 4 z = 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=0, __unbuffered_p3_EBX=0, a=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=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=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, z=1] [L830] 4 __unbuffered_p3_EAX = z VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=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=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=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, z=1] [L833] 4 __unbuffered_p3_EBX = a VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=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=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=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, z=1] [L754] 1 a = 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, 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=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=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, z=1] [L757] 1 __unbuffered_p0_EAX = x VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, 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=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=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, z=1] [L769] 2 x = 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, 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=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=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, z=1] [L772] 2 weak$$choice0 = __VERIFIER_nondet_bool() [L773] 2 weak$$choice2 = __VERIFIER_nondet_bool() [L774] 2 y$flush_delayed = weak$$choice2 [L775] 2 y$mem_tmp = y [L776] 2 y = !y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y : (y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : y$w_buff1) [L777] 2 y$w_buff0 = weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : y$w_buff0)) [L778] 2 y$w_buff1 = weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff1 : y$w_buff1)) [L779] 2 y$w_buff0_used = weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used)) [L780] 2 y$w_buff1_used = weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : (_Bool)0)) [L781] 2 y$r_buff0_thd2 = weak$$choice2 ? y$r_buff0_thd2 : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$r_buff0_thd2 : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2)) [L782] 2 y$r_buff1_thd2 = weak$$choice2 ? y$r_buff1_thd2 : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$r_buff1_thd2 : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : (_Bool)0)) [L783] 2 __unbuffered_p1_EAX = y [L784] 2 y = y$flush_delayed ? y$mem_tmp : y [L785] 2 y$flush_delayed = (_Bool)0 VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=1] [L836] 4 y = y$w_buff0_used && y$r_buff0_thd4 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd4 ? y$w_buff1 : y) [L837] 4 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd4 ? (_Bool)0 : y$w_buff0_used [L838] 4 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd4 || y$w_buff1_used && y$r_buff1_thd4 ? (_Bool)0 : y$w_buff1_used [L839] 4 y$r_buff0_thd4 = y$w_buff0_used && y$r_buff0_thd4 ? (_Bool)0 : y$r_buff0_thd4 [L840] 4 y$r_buff1_thd4 = y$w_buff0_used && y$r_buff0_thd4 || y$w_buff1_used && y$r_buff1_thd4 ? (_Bool)0 : y$r_buff1_thd4 VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=1] [L813] 3 y = y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd3 ? y$w_buff1 : y) [L814] 3 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$w_buff0_used [L815] 3 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$w_buff1_used [L816] 3 y$r_buff0_thd3 = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$r_buff0_thd3 [L817] 3 y$r_buff1_thd3 = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$r_buff1_thd3 VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=1, z=1] [L820] 3 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=1, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=1, z=1] [L762] 1 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=2, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=1, z=1] [L790] 2 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=3, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=1, z=1] [L843] 4 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=4, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=1, z=1] [L867] 0 main$tmp_guard0 = __unbuffered_cnt == 4 VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=4, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t437=-3, t438=-2, t439=-1, t440=0, weak$$choice0=0, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=1, z=1] [L869] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L869] RET 0 assume_abort_if_not(main$tmp_guard0) [L871] 0 y = y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L872] 0 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L873] 0 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L874] 0 y$r_buff0_thd0 = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L875] 0 y$r_buff1_thd0 = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=4, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t437=-3, t438=-2, t439=-1, t440=0, weak$$choice0=0, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=1, z=1] [L878] 0 main$tmp_guard1 = !(__unbuffered_p0_EAX == 0 && __unbuffered_p1_EAX == 0 && __unbuffered_p2_EAX == 0 && __unbuffered_p3_EAX == 1 && __unbuffered_p3_EBX == 0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=4, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t437=-3, t438=-2, t439=-1, t440=0, weak$$choice0=0, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=1, z=1] [L880] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \old(expression)=0, __unbuffered_cnt=4, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, expression=0, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=1, z=1] [L18] 0 reach_error() VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(arg)={0:0}, \old(expression)=0, __unbuffered_cnt=4, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p3_EAX=1, __unbuffered_p3_EBX=0, a=1, arg={0:0}, arg={0:0}, arg={0:0}, expression=0, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=1, x=1, 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=1, y$r_buff0_thd4=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$r_buff1_thd4=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, z=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: 859]: 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: 865]: 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: 861]: 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: 863]: 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 9 procedures, 83 locations, 79 edges, 7 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: 18.5s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 15.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 881 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 873 mSDsluCounter, 69 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 65 mSDsCounter, 39 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2056 IncrementalHoareTripleChecker+Invalid, 2095 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 39 mSolverCounterUnsat, 4 mSDtfsCounter, 2056 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 69 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=246occurred in iteration=5, InterpolantAutomatonStates: 55, 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, 0.4s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 287 NumberOfCodeBlocks, 287 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 241 ConstructedInterpolants, 0 QuantifiedInterpolants, 1414 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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 17:17:08,720 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