./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-1-pthread.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/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 ../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-1-pthread.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 04a1d4ff1109dce80fd92bb8b947109ce8379b8f1a452f4ba67af1891a651644 --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 16:18:30,167 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 16:18:30,230 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 16:18:30,235 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 16:18:30,236 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 16:18:30,260 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 16:18:30,261 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 16:18:30,261 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 16:18:30,262 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 16:18:30,265 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 16:18:30,265 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 16:18:30,266 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 16:18:30,267 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 16:18:30,268 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 16:18:30,268 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 16:18:30,268 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 16:18:30,268 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 16:18:30,269 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 16:18:30,269 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 16:18:30,269 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 16:18:30,269 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 16:18:30,270 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 16:18:30,270 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 16:18:30,270 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 16:18:30,270 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 16:18:30,271 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 16:18:30,271 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 16:18:30,271 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 16:18:30,272 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 16:18:30,272 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 16:18:30,273 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 16:18:30,273 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 16:18:30,296 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 16:18:30,297 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 16:18:30,297 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 16:18:30,297 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 16:18:30,297 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 16:18:30,297 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 16:18:30,298 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 16:18:30,298 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 16:18:30,298 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 16:18:30,298 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 16:18:30,298 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 16:18:30,299 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 04a1d4ff1109dce80fd92bb8b947109ce8379b8f1a452f4ba67af1891a651644 [2024-06-27 16:18:30,577 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 16:18:30,606 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 16:18:30,608 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 16:18:30,609 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 16:18:30,609 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 16:18:30,610 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/read_write_lock-1-pthread.i [2024-06-27 16:18:31,645 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 16:18:31,837 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 16:18:31,838 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/read_write_lock-1-pthread.i [2024-06-27 16:18:31,850 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f931b6ea4/b86d6dd9539148288dea5a25d5687e74/FLAGcb961d2f8 [2024-06-27 16:18:31,865 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f931b6ea4/b86d6dd9539148288dea5a25d5687e74 [2024-06-27 16:18:31,867 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 16:18:31,868 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-06-27 16:18:31,869 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 16:18:31,874 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 16:18:31,878 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 16:18:31,878 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 04:18:31" (1/1) ... [2024-06-27 16:18:31,879 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15791add and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:18:31, skipping insertion in model container [2024-06-27 16:18:31,879 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 04:18:31" (1/1) ... [2024-06-27 16:18:31,916 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 16:18:32,200 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/read_write_lock-1-pthread.i[30919,30932] [2024-06-27 16:18:32,218 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 16:18:32,231 INFO L202 MainTranslator]: Completed pre-run [2024-06-27 16:18:32,266 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/read_write_lock-1-pthread.i[30919,30932] [2024-06-27 16:18:32,278 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 16:18:32,322 INFO L206 MainTranslator]: Completed translation [2024-06-27 16:18:32,322 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:18:32 WrapperNode [2024-06-27 16:18:32,323 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 16:18:32,323 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 16:18:32,324 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 16:18:32,324 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 16:18:32,329 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:18:32" (1/1) ... [2024-06-27 16:18:32,341 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:18:32" (1/1) ... [2024-06-27 16:18:32,357 INFO L138 Inliner]: procedures = 165, calls = 34, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 57 [2024-06-27 16:18:32,358 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 16:18:32,359 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 16:18:32,359 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 16:18:32,359 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 16:18:32,399 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:18:32" (1/1) ... [2024-06-27 16:18:32,400 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:18:32" (1/1) ... [2024-06-27 16:18:32,402 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:18:32" (1/1) ... [2024-06-27 16:18:32,412 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]. [2024-06-27 16:18:32,413 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:18:32" (1/1) ... [2024-06-27 16:18:32,413 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:18:32" (1/1) ... [2024-06-27 16:18:32,417 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:18:32" (1/1) ... [2024-06-27 16:18:32,418 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:18:32" (1/1) ... [2024-06-27 16:18:32,419 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:18:32" (1/1) ... [2024-06-27 16:18:32,420 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:18:32" (1/1) ... [2024-06-27 16:18:32,422 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 16:18:32,423 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 16:18:32,423 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 16:18:32,423 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 16:18:32,423 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:18:32" (1/1) ... [2024-06-27 16:18:32,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 16:18:32,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:18:32,453 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) [2024-06-27 16:18:32,455 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 [2024-06-27 16:18:32,493 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsRwLockUnlock [2024-06-27 16:18:32,493 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsRwLockReadLock [2024-06-27 16:18:32,494 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 16:18:32,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 16:18:32,494 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2024-06-27 16:18:32,494 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2024-06-27 16:18:32,494 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsRwLockWriteLock [2024-06-27 16:18:32,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 16:18:32,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-27 16:18:32,497 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 16:18:32,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 16:18:32,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 16:18:32,497 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2024-06-27 16:18:32,497 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2024-06-27 16:18:32,498 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 16:18:32,635 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 16:18:32,637 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 16:18:32,764 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 16:18:32,764 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 16:18:32,859 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 16:18:32,859 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 16:18:32,859 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 04:18:32 BoogieIcfgContainer [2024-06-27 16:18:32,859 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 16:18:32,861 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 16:18:32,861 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 16:18:32,863 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 16:18:32,864 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 04:18:31" (1/3) ... [2024-06-27 16:18:32,864 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eb97f52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 04:18:32, skipping insertion in model container [2024-06-27 16:18:32,864 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:18:32" (2/3) ... [2024-06-27 16:18:32,865 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eb97f52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 04:18:32, skipping insertion in model container [2024-06-27 16:18:32,865 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 04:18:32" (3/3) ... [2024-06-27 16:18:32,866 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock-1-pthread.i [2024-06-27 16:18:32,872 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-06-27 16:18:32,880 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 16:18:32,880 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-06-27 16:18:32,880 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 16:18:32,925 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-06-27 16:18:32,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 54 transitions, 136 flow [2024-06-27 16:18:32,987 INFO L124 PetriNetUnfolderBase]: 2/50 cut-off events. [2024-06-27 16:18:33,002 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-27 16:18:33,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 50 events. 2/50 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 106 event pairs, 0 based on Foata normal form. 0/46 useless extension candidates. Maximal degree in co-relation 49. Up to 2 conditions per place. [2024-06-27 16:18:33,006 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 54 transitions, 136 flow [2024-06-27 16:18:33,009 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 48 transitions, 117 flow [2024-06-27 16:18:33,015 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 16:18:33,020 INFO L357 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, mHoare=true, 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;@3cebe538, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 16:18:33,021 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-27 16:18:33,029 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 16:18:33,030 INFO L124 PetriNetUnfolderBase]: 1/34 cut-off events. [2024-06-27 16:18:33,040 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-06-27 16:18:33,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:18:33,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:18:33,041 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 16:18:33,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:18:33,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1561652, now seen corresponding path program 1 times [2024-06-27 16:18:33,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:18:33,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011163666] [2024-06-27 16:18:33,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:18:33,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:18:33,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:18:33,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:33,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:18:33,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011163666] [2024-06-27 16:18:33,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011163666] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:18:33,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:18:33,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 16:18:33,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378125382] [2024-06-27 16:18:33,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:18:33,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 16:18:33,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:18:33,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 16:18:33,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-27 16:18:33,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-06-27 16:18:33,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 48 transitions, 117 flow. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 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) [2024-06-27 16:18:33,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:18:33,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-06-27 16:18:33,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:18:36,056 INFO L124 PetriNetUnfolderBase]: 23844/35987 cut-off events. [2024-06-27 16:18:36,058 INFO L125 PetriNetUnfolderBase]: For 2803/2803 co-relation queries the response was YES. [2024-06-27 16:18:36,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70708 conditions, 35987 events. 23844/35987 cut-off events. For 2803/2803 co-relation queries the response was YES. Maximal size of possible extension queue 1432. Compared 259957 event pairs, 2821 based on Foata normal form. 1894/36537 useless extension candidates. Maximal degree in co-relation 63845. Up to 10474 conditions per place. [2024-06-27 16:18:36,267 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 170 selfloop transitions, 29 changer transitions 8/218 dead transitions. [2024-06-27 16:18:36,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 218 transitions, 952 flow [2024-06-27 16:18:36,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 16:18:36,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 16:18:36,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 386 transitions. [2024-06-27 16:18:36,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6498316498316499 [2024-06-27 16:18:36,279 INFO L175 Difference]: Start difference. First operand has 59 places, 48 transitions, 117 flow. Second operand 11 states and 386 transitions. [2024-06-27 16:18:36,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 218 transitions, 952 flow [2024-06-27 16:18:36,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 218 transitions, 891 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-27 16:18:36,296 INFO L231 Difference]: Finished difference. Result has 70 places, 77 transitions, 302 flow [2024-06-27 16:18:36,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=302, PETRI_PLACES=70, PETRI_TRANSITIONS=77} [2024-06-27 16:18:36,300 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 11 predicate places. [2024-06-27 16:18:36,309 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 77 transitions, 302 flow [2024-06-27 16:18:36,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 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) [2024-06-27 16:18:36,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:18:36,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:18:36,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 16:18:36,310 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 16:18:36,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:18:36,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1618512467, now seen corresponding path program 1 times [2024-06-27 16:18:36,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:18:36,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872844356] [2024-06-27 16:18:36,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:18:36,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:18:36,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:18:36,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:36,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:18:36,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872844356] [2024-06-27 16:18:36,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872844356] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:18:36,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:18:36,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 16:18:36,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438411325] [2024-06-27 16:18:36,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:18:36,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 16:18:36,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:18:36,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 16:18:36,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 16:18:36,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 54 [2024-06-27 16:18:36,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 77 transitions, 302 flow. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:18:36,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:18:36,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 54 [2024-06-27 16:18:36,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:18:36,617 INFO L124 PetriNetUnfolderBase]: 800/2036 cut-off events. [2024-06-27 16:18:36,617 INFO L125 PetriNetUnfolderBase]: For 869/1295 co-relation queries the response was YES. [2024-06-27 16:18:36,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4732 conditions, 2036 events. 800/2036 cut-off events. For 869/1295 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 15531 event pairs, 116 based on Foata normal form. 955/2902 useless extension candidates. Maximal degree in co-relation 4098. Up to 1072 conditions per place. [2024-06-27 16:18:36,625 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 44 selfloop transitions, 2 changer transitions 2/79 dead transitions. [2024-06-27 16:18:36,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 79 transitions, 399 flow [2024-06-27 16:18:36,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 16:18:36,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 16:18:36,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 106 transitions. [2024-06-27 16:18:36,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.654320987654321 [2024-06-27 16:18:36,627 INFO L175 Difference]: Start difference. First operand has 70 places, 77 transitions, 302 flow. Second operand 3 states and 106 transitions. [2024-06-27 16:18:36,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 79 transitions, 399 flow [2024-06-27 16:18:36,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 79 transitions, 399 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-27 16:18:36,640 INFO L231 Difference]: Finished difference. Result has 66 places, 68 transitions, 291 flow [2024-06-27 16:18:36,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=291, PETRI_PLACES=66, PETRI_TRANSITIONS=68} [2024-06-27 16:18:36,641 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 7 predicate places. [2024-06-27 16:18:36,641 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 68 transitions, 291 flow [2024-06-27 16:18:36,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:18:36,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:18:36,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:18:36,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 16:18:36,642 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 16:18:36,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:18:36,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1684547409, now seen corresponding path program 2 times [2024-06-27 16:18:36,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:18:36,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282585515] [2024-06-27 16:18:36,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:18:36,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:18:36,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:18:36,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:36,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:18:36,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282585515] [2024-06-27 16:18:36,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282585515] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:18:36,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:18:36,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 16:18:36,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387578319] [2024-06-27 16:18:36,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:18:36,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 16:18:36,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:18:36,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 16:18:36,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 16:18:36,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 54 [2024-06-27 16:18:36,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 68 transitions, 291 flow. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:18:36,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:18:36,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 54 [2024-06-27 16:18:36,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:18:36,754 INFO L124 PetriNetUnfolderBase]: 116/374 cut-off events. [2024-06-27 16:18:36,754 INFO L125 PetriNetUnfolderBase]: For 234/241 co-relation queries the response was YES. [2024-06-27 16:18:36,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 828 conditions, 374 events. 116/374 cut-off events. For 234/241 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1945 event pairs, 9 based on Foata normal form. 52/407 useless extension candidates. Maximal degree in co-relation 806. Up to 177 conditions per place. [2024-06-27 16:18:36,756 INFO L140 encePairwiseOnDemand]: 48/54 looper letters, 20 selfloop transitions, 2 changer transitions 6/55 dead transitions. [2024-06-27 16:18:36,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 55 transitions, 257 flow [2024-06-27 16:18:36,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 16:18:36,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 16:18:36,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 98 transitions. [2024-06-27 16:18:36,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6049382716049383 [2024-06-27 16:18:36,757 INFO L175 Difference]: Start difference. First operand has 66 places, 68 transitions, 291 flow. Second operand 3 states and 98 transitions. [2024-06-27 16:18:36,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 55 transitions, 257 flow [2024-06-27 16:18:36,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 55 transitions, 246 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 16:18:36,760 INFO L231 Difference]: Finished difference. Result has 61 places, 42 transitions, 162 flow [2024-06-27 16:18:36,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=61, PETRI_TRANSITIONS=42} [2024-06-27 16:18:36,761 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 2 predicate places. [2024-06-27 16:18:36,761 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 42 transitions, 162 flow [2024-06-27 16:18:36,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 16:18:36,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:18:36,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 16:18:36,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 16:18:36,762 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 16:18:36,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:18:36,762 INFO L85 PathProgramCache]: Analyzing trace with hash -309757069, now seen corresponding path program 1 times [2024-06-27 16:18:36,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:18:36,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527467911] [2024-06-27 16:18:36,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:18:36,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:18:36,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:18:36,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:36,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:18:36,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527467911] [2024-06-27 16:18:36,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527467911] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:18:36,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:18:36,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 16:18:36,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980645132] [2024-06-27 16:18:36,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:18:36,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 16:18:36,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:18:36,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 16:18:36,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-27 16:18:36,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-06-27 16:18:36,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 42 transitions, 162 flow. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 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) [2024-06-27 16:18:36,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:18:36,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-06-27 16:18:36,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:18:36,937 INFO L124 PetriNetUnfolderBase]: 105/309 cut-off events. [2024-06-27 16:18:36,937 INFO L125 PetriNetUnfolderBase]: For 121/121 co-relation queries the response was YES. [2024-06-27 16:18:36,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 790 conditions, 309 events. 105/309 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1381 event pairs, 22 based on Foata normal form. 0/305 useless extension candidates. Maximal degree in co-relation 772. Up to 57 conditions per place. [2024-06-27 16:18:36,939 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 37 selfloop transitions, 9 changer transitions 11/72 dead transitions. [2024-06-27 16:18:36,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 72 transitions, 367 flow [2024-06-27 16:18:36,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 16:18:36,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 16:18:36,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 202 transitions. [2024-06-27 16:18:36,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37407407407407406 [2024-06-27 16:18:36,940 INFO L175 Difference]: Start difference. First operand has 61 places, 42 transitions, 162 flow. Second operand 10 states and 202 transitions. [2024-06-27 16:18:36,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 72 transitions, 367 flow [2024-06-27 16:18:36,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 72 transitions, 351 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-06-27 16:18:36,943 INFO L231 Difference]: Finished difference. Result has 70 places, 44 transitions, 196 flow [2024-06-27 16:18:36,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=196, PETRI_PLACES=70, PETRI_TRANSITIONS=44} [2024-06-27 16:18:36,943 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 11 predicate places. [2024-06-27 16:18:36,944 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 44 transitions, 196 flow [2024-06-27 16:18:36,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 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) [2024-06-27 16:18:36,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:18:36,944 INFO L208 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] [2024-06-27 16:18:36,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 16:18:36,945 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 16:18:36,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:18:36,945 INFO L85 PathProgramCache]: Analyzing trace with hash 467992471, now seen corresponding path program 1 times [2024-06-27 16:18:36,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:18:36,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339815967] [2024-06-27 16:18:36,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:18:36,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:18:36,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:18:36,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:36,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:18:36,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339815967] [2024-06-27 16:18:36,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339815967] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:18:36,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:18:36,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 16:18:36,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145824049] [2024-06-27 16:18:36,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:18:36,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 16:18:36,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:18:36,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 16:18:36,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-27 16:18:37,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-06-27 16:18:37,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 44 transitions, 196 flow. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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) [2024-06-27 16:18:37,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:18:37,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-06-27 16:18:37,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:18:37,123 INFO L124 PetriNetUnfolderBase]: 105/269 cut-off events. [2024-06-27 16:18:37,124 INFO L125 PetriNetUnfolderBase]: For 151/151 co-relation queries the response was YES. [2024-06-27 16:18:37,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 778 conditions, 269 events. 105/269 cut-off events. For 151/151 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1070 event pairs, 22 based on Foata normal form. 2/269 useless extension candidates. Maximal degree in co-relation 761. Up to 64 conditions per place. [2024-06-27 16:18:37,125 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 23 selfloop transitions, 4 changer transitions 27/67 dead transitions. [2024-06-27 16:18:37,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 67 transitions, 371 flow [2024-06-27 16:18:37,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 16:18:37,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 16:18:37,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 186 transitions. [2024-06-27 16:18:37,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38271604938271603 [2024-06-27 16:18:37,127 INFO L175 Difference]: Start difference. First operand has 70 places, 44 transitions, 196 flow. Second operand 9 states and 186 transitions. [2024-06-27 16:18:37,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 67 transitions, 371 flow [2024-06-27 16:18:37,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 67 transitions, 361 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 16:18:37,130 INFO L231 Difference]: Finished difference. Result has 67 places, 35 transitions, 147 flow [2024-06-27 16:18:37,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=147, PETRI_PLACES=67, PETRI_TRANSITIONS=35} [2024-06-27 16:18:37,130 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 8 predicate places. [2024-06-27 16:18:37,130 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 35 transitions, 147 flow [2024-06-27 16:18:37,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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) [2024-06-27 16:18:37,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:18:37,131 INFO L208 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] [2024-06-27 16:18:37,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 16:18:37,131 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting readerErr0ASSERT_VIOLATIONERROR_FUNCTION === [readerErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-06-27 16:18:37,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:18:37,132 INFO L85 PathProgramCache]: Analyzing trace with hash -717569101, now seen corresponding path program 1 times [2024-06-27 16:18:37,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:18:37,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757062091] [2024-06-27 16:18:37,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:18:37,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:18:37,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:18:37,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:18:37,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:18:37,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757062091] [2024-06-27 16:18:37,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757062091] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:18:37,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:18:37,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 16:18:37,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491755081] [2024-06-27 16:18:37,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:18:37,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 16:18:37,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:18:37,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 16:18:37,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-06-27 16:18:37,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-06-27 16:18:37,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 35 transitions, 147 flow. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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) [2024-06-27 16:18:37,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:18:37,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-06-27 16:18:37,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:18:37,281 INFO L124 PetriNetUnfolderBase]: 78/183 cut-off events. [2024-06-27 16:18:37,282 INFO L125 PetriNetUnfolderBase]: For 124/128 co-relation queries the response was YES. [2024-06-27 16:18:37,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 519 conditions, 183 events. 78/183 cut-off events. For 124/128 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 559 event pairs, 22 based on Foata normal form. 6/188 useless extension candidates. Maximal degree in co-relation 505. Up to 57 conditions per place. [2024-06-27 16:18:37,283 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 0 selfloop transitions, 0 changer transitions 54/54 dead transitions. [2024-06-27 16:18:37,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 54 transitions, 297 flow [2024-06-27 16:18:37,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 16:18:37,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 16:18:37,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 180 transitions. [2024-06-27 16:18:37,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37037037037037035 [2024-06-27 16:18:37,284 INFO L175 Difference]: Start difference. First operand has 67 places, 35 transitions, 147 flow. Second operand 9 states and 180 transitions. [2024-06-27 16:18:37,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 54 transitions, 297 flow [2024-06-27 16:18:37,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 54 transitions, 265 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-27 16:18:37,286 INFO L231 Difference]: Finished difference. Result has 57 places, 0 transitions, 0 flow [2024-06-27 16:18:37,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=57, PETRI_TRANSITIONS=0} [2024-06-27 16:18:37,286 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -2 predicate places. [2024-06-27 16:18:37,287 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 0 transitions, 0 flow [2024-06-27 16:18:37,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 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) [2024-06-27 16:18:37,289 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2024-06-27 16:18:37,289 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 7 remaining) [2024-06-27 16:18:37,290 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2024-06-27 16:18:37,290 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2024-06-27 16:18:37,290 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2024-06-27 16:18:37,290 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2024-06-27 16:18:37,290 INFO L805 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2024-06-27 16:18:37,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 16:18:37,291 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2024-06-27 16:18:37,295 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-27 16:18:37,295 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-27 16:18:37,299 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 04:18:37 BasicIcfg [2024-06-27 16:18:37,299 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-27 16:18:37,300 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-06-27 16:18:37,300 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-06-27 16:18:37,300 INFO L274 PluginConnector]: Witness Printer initialized [2024-06-27 16:18:37,300 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 04:18:32" (3/4) ... [2024-06-27 16:18:37,301 INFO L137 WitnessPrinter]: Generating witness for correct program [2024-06-27 16:18:37,304 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure reader [2024-06-27 16:18:37,304 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure writer [2024-06-27 16:18:37,307 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 50 nodes and edges [2024-06-27 16:18:37,307 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-06-27 16:18:37,307 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-06-27 16:18:37,308 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-06-27 16:18:37,365 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-06-27 16:18:37,365 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-06-27 16:18:37,365 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-06-27 16:18:37,366 INFO L158 Benchmark]: Toolchain (without parser) took 5497.88ms. Allocated memory was 195.0MB in the beginning and 1.0GB in the end (delta: 807.4MB). Free memory was 115.6MB in the beginning and 630.2MB in the end (delta: -514.5MB). Peak memory consumption was 295.2MB. Max. memory is 16.1GB. [2024-06-27 16:18:37,366 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 195.0MB. Free memory is still 163.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 16:18:37,366 INFO L158 Benchmark]: CACSL2BoogieTranslator took 453.85ms. Allocated memory is still 195.0MB. Free memory was 115.5MB in the beginning and 94.2MB in the end (delta: 21.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-06-27 16:18:37,367 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.61ms. Allocated memory is still 195.0MB. Free memory was 94.2MB in the beginning and 92.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 16:18:37,367 INFO L158 Benchmark]: Boogie Preprocessor took 63.39ms. Allocated memory is still 195.0MB. Free memory was 92.2MB in the beginning and 161.3MB in the end (delta: -69.1MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. [2024-06-27 16:18:37,367 INFO L158 Benchmark]: RCFGBuilder took 437.03ms. Allocated memory is still 195.0MB. Free memory was 161.3MB in the beginning and 139.3MB in the end (delta: 22.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-06-27 16:18:37,367 INFO L158 Benchmark]: TraceAbstraction took 4438.30ms. Allocated memory was 195.0MB in the beginning and 1.0GB in the end (delta: 807.4MB). Free memory was 138.8MB in the beginning and 634.4MB in the end (delta: -495.6MB). Peak memory consumption was 313.8MB. Max. memory is 16.1GB. [2024-06-27 16:18:37,368 INFO L158 Benchmark]: Witness Printer took 65.86ms. Allocated memory is still 1.0GB. Free memory was 634.4MB in the beginning and 630.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-27 16:18:37,369 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 195.0MB. Free memory is still 163.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 453.85ms. Allocated memory is still 195.0MB. Free memory was 115.5MB in the beginning and 94.2MB in the end (delta: 21.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.61ms. Allocated memory is still 195.0MB. Free memory was 94.2MB in the beginning and 92.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 63.39ms. Allocated memory is still 195.0MB. Free memory was 92.2MB in the beginning and 161.3MB in the end (delta: -69.1MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. * RCFGBuilder took 437.03ms. Allocated memory is still 195.0MB. Free memory was 161.3MB in the beginning and 139.3MB in the end (delta: 22.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 4438.30ms. Allocated memory was 195.0MB in the beginning and 1.0GB in the end (delta: 807.4MB). Free memory was 138.8MB in the beginning and 634.4MB in the end (delta: -495.6MB). Peak memory consumption was 313.8MB. Max. memory is 16.1GB. * Witness Printer took 65.86ms. Allocated memory is still 1.0GB. Free memory was 634.4MB in the beginning and 630.2MB 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: 710]: 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, 76 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: 4.3s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 392 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 359 mSDsluCounter, 114 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 89 mSDsCounter, 25 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1042 IncrementalHoareTripleChecker+Invalid, 1067 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 25 mSolverCounterUnsat, 25 mSDtfsCounter, 1042 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=302occurred in iteration=1, InterpolantAutomatonStates: 45, 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, 0.3s InterpolantComputationTime, 106 NumberOfCodeBlocks, 106 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 100 ConstructedInterpolants, 0 QuantifiedInterpolants, 201 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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! [2024-06-27 16:18:37,399 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 Result: TRUE