./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-atomic/read_write_lock-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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_1.5.800.v20200727-1323.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-atomic/read_write_lock-1.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 ab88d5d149a161a7149bad4a02dfeb168f970e6264d498d3725e0f24ecb8e5e3 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 08:03:01,470 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 08:03:01,548 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-12 08:03:01,554 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 08:03:01,556 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 08:03:01,591 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 08:03:01,592 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 08:03:01,592 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 08:03:01,593 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 08:03:01,593 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 08:03:01,594 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 08:03:01,594 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 08:03:01,595 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 08:03:01,597 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 08:03:01,597 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 08:03:01,598 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 08:03:01,598 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-12 08:03:01,598 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 08:03:01,599 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 08:03:01,599 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 08:03:01,599 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 08:03:01,600 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-12 08:03:01,600 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 08:03:01,600 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-12 08:03:01,601 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 08:03:01,601 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 08:03:01,601 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-12 08:03:01,605 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 08:03:01,605 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 08:03:01,606 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 08:03:01,606 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 08:03:01,606 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 08:03:01,606 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 08:03:01,607 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 08:03:01,607 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 08:03:01,607 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-12 08:03:01,607 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 08:03:01,608 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 08:03:01,608 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 08:03:01,608 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 08:03:01,608 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 08:03:01,611 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 08:03:01,611 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ab88d5d149a161a7149bad4a02dfeb168f970e6264d498d3725e0f24ecb8e5e3 [2024-11-12 08:03:01,870 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 08:03:01,895 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 08:03:01,898 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 08:03:01,899 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 08:03:01,900 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 08:03:01,901 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-atomic/read_write_lock-1.i [2024-11-12 08:03:03,364 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 08:03:03,579 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 08:03:03,579 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-atomic/read_write_lock-1.i [2024-11-12 08:03:03,596 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ddc80aab/0f2f4babe37c45b08d4d5065c551131d/FLAG1140e22af [2024-11-12 08:03:03,617 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ddc80aab/0f2f4babe37c45b08d4d5065c551131d [2024-11-12 08:03:03,621 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 08:03:03,623 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 08:03:03,625 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 08:03:03,625 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 08:03:03,630 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 08:03:03,631 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:03:03" (1/1) ... [2024-11-12 08:03:03,631 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cdfafc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:03:03, skipping insertion in model container [2024-11-12 08:03:03,632 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:03:03" (1/1) ... [2024-11-12 08:03:03,675 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 08:03:03,965 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-atomic/read_write_lock-1.i[30145,30158] [2024-11-12 08:03:03,974 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 08:03:03,994 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 08:03:04,048 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-atomic/read_write_lock-1.i[30145,30158] [2024-11-12 08:03:04,056 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 08:03:04,146 INFO L204 MainTranslator]: Completed translation [2024-11-12 08:03:04,147 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:03:04 WrapperNode [2024-11-12 08:03:04,147 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 08:03:04,148 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 08:03:04,149 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 08:03:04,149 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 08:03:04,157 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:03:04" (1/1) ... [2024-11-12 08:03:04,174 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:03:04" (1/1) ... [2024-11-12 08:03:04,198 INFO L138 Inliner]: procedures = 163, calls = 26, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 56 [2024-11-12 08:03:04,200 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 08:03:04,200 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 08:03:04,201 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 08:03:04,201 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 08:03:04,211 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:03:04" (1/1) ... [2024-11-12 08:03:04,211 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:03:04" (1/1) ... [2024-11-12 08:03:04,213 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:03:04" (1/1) ... [2024-11-12 08:03:04,231 INFO L175 MemorySlicer]: Split 13 memory accesses to 2 slices as follows [2, 11]. 85 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [2, 11]. The 0 writes are split as follows [0, 0]. [2024-11-12 08:03:04,232 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:03:04" (1/1) ... [2024-11-12 08:03:04,233 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:03:04" (1/1) ... [2024-11-12 08:03:04,240 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:03:04" (1/1) ... [2024-11-12 08:03:04,242 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:03:04" (1/1) ... [2024-11-12 08:03:04,245 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:03:04" (1/1) ... [2024-11-12 08:03:04,246 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:03:04" (1/1) ... [2024-11-12 08:03:04,248 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 08:03:04,252 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 08:03:04,253 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 08:03:04,253 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 08:03:04,254 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:03:04" (1/1) ... [2024-11-12 08:03:04,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 08:03:04,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 08:03:04,281 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) [2024-11-12 08:03:04,284 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 [2024-11-12 08:03:04,325 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsRwLockUnlock [2024-11-12 08:03:04,325 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsRwLockReadLock [2024-11-12 08:03:04,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 08:03:04,325 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2024-11-12 08:03:04,325 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2024-11-12 08:03:04,326 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsRwLockWriteLock [2024-11-12 08:03:04,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 08:03:04,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-12 08:03:04,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 08:03:04,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 08:03:04,326 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2024-11-12 08:03:04,327 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2024-11-12 08:03:04,328 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-12 08:03:04,436 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 08:03:04,438 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 08:03:04,609 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-12 08:03:04,609 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 08:03:04,744 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 08:03:04,745 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-12 08:03:04,745 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:03:04 BoogieIcfgContainer [2024-11-12 08:03:04,745 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 08:03:04,747 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 08:03:04,748 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 08:03:04,751 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 08:03:04,751 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 08:03:03" (1/3) ... [2024-11-12 08:03:04,752 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21700a47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:03:04, skipping insertion in model container [2024-11-12 08:03:04,753 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:03:04" (2/3) ... [2024-11-12 08:03:04,753 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21700a47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:03:04, skipping insertion in model container [2024-11-12 08:03:04,754 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:03:04" (3/3) ... [2024-11-12 08:03:04,756 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock-1.i [2024-11-12 08:03:04,772 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 08:03:04,772 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-12 08:03:04,772 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-12 08:03:04,825 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-12 08:03:04,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 46 transitions, 120 flow [2024-11-12 08:03:04,895 INFO L124 PetriNetUnfolderBase]: 2/42 cut-off events. [2024-11-12 08:03:04,896 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-12 08:03:04,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 42 events. 2/42 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 84 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2024-11-12 08:03:04,902 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 46 transitions, 120 flow [2024-11-12 08:03:04,904 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 40 transitions, 101 flow [2024-11-12 08:03:04,918 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 08:03:04,926 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;@6e6b0c96, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 08:03:04,926 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-12 08:03:04,937 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-12 08:03:04,940 INFO L124 PetriNetUnfolderBase]: 1/24 cut-off events. [2024-11-12 08:03:04,940 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-12 08:03:04,940 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:03:04,941 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:03:04,941 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-12 08:03:04,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:03:04,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1231612407, now seen corresponding path program 1 times [2024-11-12 08:03:04,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:03:04,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816561337] [2024-11-12 08:03:04,960 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:03:04,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:03:05,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:03:05,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:03:05,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:03:05,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816561337] [2024-11-12 08:03:05,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816561337] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:03:05,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:03:05,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 08:03:05,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585632355] [2024-11-12 08:03:05,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:03:05,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 08:03:05,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:03:05,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 08:03:05,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 08:03:05,247 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-11-12 08:03:05,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 40 transitions, 101 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2024-11-12 08:03:05,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:03:05,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-11-12 08:03:05,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:03:06,754 INFO L124 PetriNetUnfolderBase]: 8977/13370 cut-off events. [2024-11-12 08:03:06,755 INFO L125 PetriNetUnfolderBase]: For 1098/1098 co-relation queries the response was YES. [2024-11-12 08:03:06,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26796 conditions, 13370 events. 8977/13370 cut-off events. For 1098/1098 co-relation queries the response was YES. Maximal size of possible extension queue 606. Compared 85902 event pairs, 4476 based on Foata normal form. 790/13554 useless extension candidates. Maximal degree in co-relation 24273. Up to 7538 conditions per place. [2024-11-12 08:03:06,851 INFO L140 encePairwiseOnDemand]: 39/46 looper letters, 49 selfloop transitions, 4 changer transitions 0/61 dead transitions. [2024-11-12 08:03:06,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 61 transitions, 264 flow [2024-11-12 08:03:06,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 08:03:06,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 08:03:06,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2024-11-12 08:03:06,864 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6739130434782609 [2024-11-12 08:03:06,867 INFO L175 Difference]: Start difference. First operand has 51 places, 40 transitions, 101 flow. Second operand 3 states and 93 transitions. [2024-11-12 08:03:06,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 61 transitions, 264 flow [2024-11-12 08:03:06,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 61 transitions, 242 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-12 08:03:06,900 INFO L231 Difference]: Finished difference. Result has 48 places, 41 transitions, 114 flow [2024-11-12 08:03:06,903 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=48, PETRI_TRANSITIONS=41} [2024-11-12 08:03:06,907 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, -3 predicate places. [2024-11-12 08:03:06,908 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 41 transitions, 114 flow [2024-11-12 08:03:06,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2024-11-12 08:03:06,908 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:03:06,908 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:03:06,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 08:03:06,909 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-12 08:03:06,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:03:06,910 INFO L85 PathProgramCache]: Analyzing trace with hash -765020605, now seen corresponding path program 1 times [2024-11-12 08:03:06,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:03:06,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234447755] [2024-11-12 08:03:06,911 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:03:06,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:03:06,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:03:07,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:03:07,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:03:07,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234447755] [2024-11-12 08:03:07,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234447755] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:03:07,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:03:07,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 08:03:07,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945642916] [2024-11-12 08:03:07,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:03:07,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 08:03:07,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:03:07,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 08:03:07,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 08:03:07,151 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-11-12 08:03:07,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 41 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:03:07,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:03:07,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-11-12 08:03:07,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:03:07,297 INFO L124 PetriNetUnfolderBase]: 468/977 cut-off events. [2024-11-12 08:03:07,298 INFO L125 PetriNetUnfolderBase]: For 248/248 co-relation queries the response was YES. [2024-11-12 08:03:07,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2393 conditions, 977 events. 468/977 cut-off events. For 248/248 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5585 event pairs, 72 based on Foata normal form. 698/1635 useless extension candidates. Maximal degree in co-relation 1287. Up to 686 conditions per place. [2024-11-12 08:03:07,305 INFO L140 encePairwiseOnDemand]: 38/46 looper letters, 30 selfloop transitions, 2 changer transitions 2/45 dead transitions. [2024-11-12 08:03:07,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 45 transitions, 195 flow [2024-11-12 08:03:07,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 08:03:07,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 08:03:07,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 82 transitions. [2024-11-12 08:03:07,308 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5942028985507246 [2024-11-12 08:03:07,308 INFO L175 Difference]: Start difference. First operand has 48 places, 41 transitions, 114 flow. Second operand 3 states and 82 transitions. [2024-11-12 08:03:07,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 45 transitions, 195 flow [2024-11-12 08:03:07,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 45 transitions, 185 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-12 08:03:07,317 INFO L231 Difference]: Finished difference. Result has 42 places, 34 transitions, 103 flow [2024-11-12 08:03:07,317 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=103, PETRI_PLACES=42, PETRI_TRANSITIONS=34} [2024-11-12 08:03:07,318 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, -9 predicate places. [2024-11-12 08:03:07,318 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 34 transitions, 103 flow [2024-11-12 08:03:07,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:03:07,318 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:03:07,319 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:03:07,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 08:03:07,319 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-12 08:03:07,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:03:07,320 INFO L85 PathProgramCache]: Analyzing trace with hash 954859745, now seen corresponding path program 2 times [2024-11-12 08:03:07,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:03:07,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881955290] [2024-11-12 08:03:07,321 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:03:07,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:03:07,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:03:07,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:03:07,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:03:07,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881955290] [2024-11-12 08:03:07,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881955290] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:03:07,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:03:07,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 08:03:07,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769527882] [2024-11-12 08:03:07,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:03:07,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 08:03:07,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:03:07,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 08:03:07,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 08:03:07,429 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-11-12 08:03:07,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 34 transitions, 103 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:03:07,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:03:07,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-11-12 08:03:07,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:03:07,495 INFO L124 PetriNetUnfolderBase]: 44/129 cut-off events. [2024-11-12 08:03:07,495 INFO L125 PetriNetUnfolderBase]: For 154/154 co-relation queries the response was YES. [2024-11-12 08:03:07,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 314 conditions, 129 events. 44/129 cut-off events. For 154/154 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 468 event pairs, 4 based on Foata normal form. 60/181 useless extension candidates. Maximal degree in co-relation 219. Up to 92 conditions per place. [2024-11-12 08:03:07,496 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 18 selfloop transitions, 2 changer transitions 6/34 dead transitions. [2024-11-12 08:03:07,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 34 transitions, 151 flow [2024-11-12 08:03:07,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 08:03:07,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 08:03:07,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2024-11-12 08:03:07,500 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2024-11-12 08:03:07,500 INFO L175 Difference]: Start difference. First operand has 42 places, 34 transitions, 103 flow. Second operand 3 states and 72 transitions. [2024-11-12 08:03:07,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 34 transitions, 151 flow [2024-11-12 08:03:07,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 34 transitions, 141 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-11-12 08:03:07,503 INFO L231 Difference]: Finished difference. Result has 36 places, 23 transitions, 69 flow [2024-11-12 08:03:07,503 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=36, PETRI_TRANSITIONS=23} [2024-11-12 08:03:07,504 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, -15 predicate places. [2024-11-12 08:03:07,505 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 23 transitions, 69 flow [2024-11-12 08:03:07,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 08:03:07,505 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-12 08:03:07,505 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-12 08:03:07,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-12 08:03:07,506 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-12 08:03:07,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 08:03:07,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1071216268, now seen corresponding path program 1 times [2024-11-12 08:03:07,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 08:03:07,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750653592] [2024-11-12 08:03:07,507 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 08:03:07,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 08:03:07,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 08:03:07,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 08:03:07,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 08:03:07,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750653592] [2024-11-12 08:03:07,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750653592] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 08:03:07,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 08:03:07,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-12 08:03:07,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745039969] [2024-11-12 08:03:07,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 08:03:07,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 08:03:07,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 08:03:07,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 08:03:07,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 08:03:07,563 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 46 [2024-11-12 08:03:07,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 23 transitions, 69 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2024-11-12 08:03:07,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-12 08:03:07,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 46 [2024-11-12 08:03:07,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-12 08:03:07,597 INFO L124 PetriNetUnfolderBase]: 31/81 cut-off events. [2024-11-12 08:03:07,597 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES. [2024-11-12 08:03:07,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 81 events. 31/81 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 223 event pairs, 15 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 200. Up to 45 conditions per place. [2024-11-12 08:03:07,598 INFO L140 encePairwiseOnDemand]: 44/46 looper letters, 0 selfloop transitions, 0 changer transitions 24/24 dead transitions. [2024-11-12 08:03:07,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 24 transitions, 113 flow [2024-11-12 08:03:07,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 08:03:07,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-12 08:03:07,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 54 transitions. [2024-11-12 08:03:07,601 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.391304347826087 [2024-11-12 08:03:07,601 INFO L175 Difference]: Start difference. First operand has 36 places, 23 transitions, 69 flow. Second operand 3 states and 54 transitions. [2024-11-12 08:03:07,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 24 transitions, 113 flow [2024-11-12 08:03:07,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 24 transitions, 103 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-11-12 08:03:07,602 INFO L231 Difference]: Finished difference. Result has 30 places, 0 transitions, 0 flow [2024-11-12 08:03:07,602 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=30, PETRI_TRANSITIONS=0} [2024-11-12 08:03:07,603 INFO L279 CegarLoopForPetriNet]: 51 programPoint places, -21 predicate places. [2024-11-12 08:03:07,604 INFO L471 AbstractCegarLoop]: Abstraction has has 30 places, 0 transitions, 0 flow [2024-11-12 08:03:07,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2024-11-12 08:03:07,607 INFO L782 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2024-11-12 08:03:07,608 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 7 remaining) [2024-11-12 08:03:07,608 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2024-11-12 08:03:07,608 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2024-11-12 08:03:07,608 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2024-11-12 08:03:07,608 INFO L782 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2024-11-12 08:03:07,609 INFO L782 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2024-11-12 08:03:07,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-12 08:03:07,609 INFO L421 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2024-11-12 08:03:07,614 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-12 08:03:07,615 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-12 08:03:07,620 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 08:03:07 BasicIcfg [2024-11-12 08:03:07,623 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-12 08:03:07,624 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-12 08:03:07,624 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-12 08:03:07,624 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-12 08:03:07,624 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:03:04" (3/4) ... [2024-11-12 08:03:07,627 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-12 08:03:07,629 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure reader [2024-11-12 08:03:07,630 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure writer [2024-11-12 08:03:07,634 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 50 nodes and edges [2024-11-12 08:03:07,635 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-11-12 08:03:07,635 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-12 08:03:07,635 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-12 08:03:07,732 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-12 08:03:07,733 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-12 08:03:07,733 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-12 08:03:07,734 INFO L158 Benchmark]: Toolchain (without parser) took 4110.93ms. Allocated memory was 172.0MB in the beginning and 253.8MB in the end (delta: 81.8MB). Free memory was 102.6MB in the beginning and 77.6MB in the end (delta: 25.0MB). Peak memory consumption was 109.6MB. Max. memory is 16.1GB. [2024-11-12 08:03:07,734 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 172.0MB. Free memory is still 128.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-12 08:03:07,734 INFO L158 Benchmark]: CACSL2BoogieTranslator took 522.07ms. Allocated memory is still 172.0MB. Free memory was 102.4MB in the beginning and 138.1MB in the end (delta: -35.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-11-12 08:03:07,734 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.02ms. Allocated memory is still 172.0MB. Free memory was 138.1MB in the beginning and 136.0MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-12 08:03:07,735 INFO L158 Benchmark]: Boogie Preprocessor took 51.26ms. Allocated memory is still 172.0MB. Free memory was 136.0MB in the beginning and 133.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-12 08:03:07,735 INFO L158 Benchmark]: RCFGBuilder took 493.04ms. Allocated memory is still 172.0MB. Free memory was 133.9MB in the beginning and 107.9MB in the end (delta: 26.0MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2024-11-12 08:03:07,735 INFO L158 Benchmark]: TraceAbstraction took 2875.52ms. Allocated memory was 172.0MB in the beginning and 253.8MB in the end (delta: 81.8MB). Free memory was 107.3MB in the beginning and 81.8MB in the end (delta: 25.5MB). Peak memory consumption was 109.6MB. Max. memory is 16.1GB. [2024-11-12 08:03:07,735 INFO L158 Benchmark]: Witness Printer took 109.50ms. Allocated memory is still 253.8MB. Free memory was 81.8MB in the beginning and 77.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-12 08:03:07,737 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 172.0MB. Free memory is still 128.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 522.07ms. Allocated memory is still 172.0MB. Free memory was 102.4MB in the beginning and 138.1MB in the end (delta: -35.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.02ms. Allocated memory is still 172.0MB. Free memory was 138.1MB in the beginning and 136.0MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 51.26ms. Allocated memory is still 172.0MB. Free memory was 136.0MB in the beginning and 133.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 493.04ms. Allocated memory is still 172.0MB. Free memory was 133.9MB in the beginning and 107.9MB in the end (delta: 26.0MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 2875.52ms. Allocated memory was 172.0MB in the beginning and 253.8MB in the end (delta: 81.8MB). Free memory was 107.3MB in the beginning and 81.8MB in the end (delta: 25.5MB). Peak memory consumption was 109.6MB. Max. memory is 16.1GB. * Witness Printer took 109.50ms. Allocated memory is still 253.8MB. Free memory was 81.8MB in the beginning and 77.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 685]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 64 locations, 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: 2.8s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 61 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 49 mSDsluCounter, 4 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 198 IncrementalHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 4 mSDtfsCounter, 198 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=114occurred in iteration=1, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 99 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-12 08:03:07,765 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE