./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/mutex-meet/13-privatized_27-multiple-protecting2_true.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version bcb38a6f 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/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i ./goblint.2024-05-21_14-57-05.files/mutex-meet/13-privatized_27-multiple-protecting2_true.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-bcb38a6-m [2024-06-03 20:56:47,331 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-03 20:56:47,396 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-03 20:56:47,399 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-03 20:56:47,399 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-03 20:56:47,429 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-03 20:56:47,430 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-03 20:56:47,431 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-03 20:56:47,431 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-03 20:56:47,434 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-03 20:56:47,434 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-03 20:56:47,435 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-03 20:56:47,435 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-03 20:56:47,436 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-03 20:56:47,437 INFO L153 SettingsManager]: * Use SBE=true [2024-06-03 20:56:47,437 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-03 20:56:47,437 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-03 20:56:47,437 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-03 20:56:47,438 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-03 20:56:47,438 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-03 20:56:47,438 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-03 20:56:47,438 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-03 20:56:47,439 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-03 20:56:47,439 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-03 20:56:47,439 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-03 20:56:47,439 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-03 20:56:47,439 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-03 20:56:47,440 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-03 20:56:47,440 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-03 20:56:47,440 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-03 20:56:47,441 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-03 20:56:47,441 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-03 20:56:47,442 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 20:56:47,442 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-03 20:56:47,442 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-03 20:56:47,442 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-03 20:56:47,442 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-03 20:56:47,443 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-03 20:56:47,443 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-03 20:56:47,443 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-03 20:56:47,443 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-03 20:56:47,444 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-03 20:56:47,444 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-03 20:56:47,444 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-03 20:56:47,612 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-03 20:56:47,634 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-03 20:56:47,636 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-03 20:56:47,637 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-03 20:56:47,637 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-03 20:56:47,638 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/mutex-meet/13-privatized_27-multiple-protecting2_true.yml/witness.yml [2024-06-03 20:56:47,751 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-03 20:56:47,751 INFO L274 PluginConnector]: CDTParser initialized [2024-06-03 20:56:47,753 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i [2024-06-03 20:56:48,640 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-03 20:56:48,864 INFO L384 CDTParser]: Found 1 translation units. [2024-06-03 20:56:48,864 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i [2024-06-03 20:56:48,878 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bbe1b855/c93c23c2d6ba4bbcb2b4accd446812a2/FLAG11870a636 [2024-06-03 20:56:48,891 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bbe1b855/c93c23c2d6ba4bbcb2b4accd446812a2 [2024-06-03 20:56:48,891 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-03 20:56:48,892 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-03 20:56:48,894 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-03 20:56:48,894 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-03 20:56:48,898 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-03 20:56:48,899 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 08:56:47" (1/2) ... [2024-06-03 20:56:48,899 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b4ea378 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:56:48, skipping insertion in model container [2024-06-03 20:56:48,900 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 08:56:47" (1/2) ... [2024-06-03 20:56:48,901 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@44723de4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:56:48, skipping insertion in model container [2024-06-03 20:56:48,901 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 08:56:48" (2/2) ... [2024-06-03 20:56:48,902 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b4ea378 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 08:56:48, skipping insertion in model container [2024-06-03 20:56:48,902 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 08:56:48" (2/2) ... [2024-06-03 20:56:48,902 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-03 20:56:48,941 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-03 20:56:48,942 INFO L97 edCorrectnessWitness]: Location invariant before [L711-L711] (((((! multithreaded || (__global_lock_locked || ((1LL - (long long )g1) + (long long )g2 >= 0LL && (long long )g1 + (long long )g2 >= 0LL))) && (! multithreaded || (mutex2_locked || g2 == 0))) && (! multithreaded || ((0 <= g1 && g1 <= 1) && (g1 == 0 || g1 == 1)))) && (! multithreaded || (mutex1_locked || g1 == 0))) && (! multithreaded || (__global_lock_locked || (((((0 <= g1 && 0 <= g2) && g1 <= 1) && g2 <= 1) && (g1 == 0 || g1 == 1)) && (g2 == 0 || g2 == 1))))) && (! multithreaded || ((0 <= g2 && g2 <= 1) && (g2 == 0 || g2 == 1))) [2024-06-03 20:56:48,943 INFO L97 edCorrectnessWitness]: Location invariant before [L712-L712] (((((! multithreaded || (__global_lock_locked || ((1LL - (long long )g1) + (long long )g2 >= 0LL && (long long )g1 + (long long )g2 >= 0LL))) && (! multithreaded || (mutex2_locked || g2 == 0))) && (! multithreaded || ((0 <= g1 && g1 <= 1) && (g1 == 0 || g1 == 1)))) && (! multithreaded || (mutex1_locked || g1 == 0))) && (! multithreaded || (__global_lock_locked || (((((0 <= g1 && 0 <= g2) && g1 <= 1) && g2 <= 1) && (g1 == 0 || g1 == 1)) && (g2 == 0 || g2 == 1))))) && (! multithreaded || ((0 <= g2 && g2 <= 1) && (g2 == 0 || g2 == 1))) [2024-06-03 20:56:48,943 INFO L103 edCorrectnessWitness]: ghost_variable __global_lock_locked = 0 [2024-06-03 20:56:48,943 INFO L103 edCorrectnessWitness]: ghost_variable mutex1_locked = 0 [2024-06-03 20:56:48,943 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-03 20:56:48,944 INFO L103 edCorrectnessWitness]: ghost_variable mutex2_locked = 0 [2024-06-03 20:56:48,944 INFO L106 edCorrectnessWitness]: ghost_update [L701-L701] __global_lock_locked = 1; [2024-06-03 20:56:48,944 INFO L106 edCorrectnessWitness]: ghost_update [L686-L686] mutex1_locked = 1; [2024-06-03 20:56:48,944 INFO L106 edCorrectnessWitness]: ghost_update [L727-L727] mutex1_locked = 0; [2024-06-03 20:56:48,944 INFO L106 edCorrectnessWitness]: ghost_update [L713-L713] __global_lock_locked = 1; [2024-06-03 20:56:48,944 INFO L106 edCorrectnessWitness]: ghost_update [L724-L724] __global_lock_locked = 1; [2024-06-03 20:56:48,945 INFO L106 edCorrectnessWitness]: ghost_update [L697-L697] mutex2_locked = 1; [2024-06-03 20:56:48,945 INFO L106 edCorrectnessWitness]: ghost_update [L712-L712] mutex1_locked = 1; [2024-06-03 20:56:48,945 INFO L106 edCorrectnessWitness]: ghost_update [L716-L716] mutex2_locked = 1; [2024-06-03 20:56:48,945 INFO L106 edCorrectnessWitness]: ghost_update [L687-L687] __global_lock_locked = 1; [2024-06-03 20:56:48,945 INFO L106 edCorrectnessWitness]: ghost_update [L720-L720] __global_lock_locked = 1; [2024-06-03 20:56:48,945 INFO L106 edCorrectnessWitness]: ghost_update [L723-L723] mutex2_locked = 0; [2024-06-03 20:56:48,945 INFO L106 edCorrectnessWitness]: ghost_update [L704-L704] mutex2_locked = 0; [2024-06-03 20:56:48,946 INFO L106 edCorrectnessWitness]: ghost_update [L726-L726] __global_lock_locked = 0; [2024-06-03 20:56:48,946 INFO L106 edCorrectnessWitness]: ghost_update [L692-L692] __global_lock_locked = 0; [2024-06-03 20:56:48,946 INFO L106 edCorrectnessWitness]: ghost_update [L700-L700] __global_lock_locked = 0; [2024-06-03 20:56:48,946 INFO L106 edCorrectnessWitness]: ghost_update [L689-L689] __global_lock_locked = 0; [2024-06-03 20:56:48,946 INFO L106 edCorrectnessWitness]: ghost_update [L690-L690] __global_lock_locked = 1; [2024-06-03 20:56:48,946 INFO L106 edCorrectnessWitness]: ghost_update [L698-L698] __global_lock_locked = 1; [2024-06-03 20:56:48,947 INFO L106 edCorrectnessWitness]: ghost_update [L722-L722] __global_lock_locked = 0; [2024-06-03 20:56:48,947 INFO L106 edCorrectnessWitness]: ghost_update [L693-L693] mutex1_locked = 0; [2024-06-03 20:56:48,947 INFO L106 edCorrectnessWitness]: ghost_update [L710-L710] multithreaded = 1; [2024-06-03 20:56:48,947 INFO L106 edCorrectnessWitness]: ghost_update [L715-L715] __global_lock_locked = 0; [2024-06-03 20:56:48,947 INFO L106 edCorrectnessWitness]: ghost_update [L717-L717] __global_lock_locked = 1; [2024-06-03 20:56:48,947 INFO L106 edCorrectnessWitness]: ghost_update [L703-L703] __global_lock_locked = 0; [2024-06-03 20:56:48,947 INFO L106 edCorrectnessWitness]: ghost_update [L719-L719] __global_lock_locked = 0; [2024-06-03 20:56:48,979 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-03 20:56:49,181 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 20:56:49,190 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-03 20:56:49,286 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 20:56:49,315 INFO L206 MainTranslator]: Completed translation [2024-06-03 20:56:49,315 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 08:56:49 WrapperNode [2024-06-03 20:56:49,320 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-03 20:56:49,322 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-03 20:56:49,322 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-03 20:56:49,322 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-03 20:56:49,327 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 08:56:49" (1/1) ... [2024-06-03 20:56:49,337 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 08:56:49" (1/1) ... [2024-06-03 20:56:49,359 INFO L138 Inliner]: procedures = 163, calls = 55, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 137 [2024-06-03 20:56:49,359 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-03 20:56:49,360 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-03 20:56:49,360 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-03 20:56:49,360 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-03 20:56:49,367 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 08:56:49" (1/1) ... [2024-06-03 20:56:49,367 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 08:56:49" (1/1) ... [2024-06-03 20:56:49,370 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 08:56:49" (1/1) ... [2024-06-03 20:56:49,381 INFO L175 MemorySlicer]: Split 17 memory accesses to 4 slices as follows [2, 5, 5, 5]. 29 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 5, 5, 5]. The 0 writes are split as follows [0, 0, 0, 0]. [2024-06-03 20:56:49,382 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 08:56:49" (1/1) ... [2024-06-03 20:56:49,382 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 08:56:49" (1/1) ... [2024-06-03 20:56:49,387 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 08:56:49" (1/1) ... [2024-06-03 20:56:49,389 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 08:56:49" (1/1) ... [2024-06-03 20:56:49,391 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 08:56:49" (1/1) ... [2024-06-03 20:56:49,392 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 08:56:49" (1/1) ... [2024-06-03 20:56:49,394 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-03 20:56:49,395 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-03 20:56:49,395 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-03 20:56:49,395 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-03 20:56:49,396 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 08:56:49" (1/1) ... [2024-06-03 20:56:49,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 20:56:49,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-03 20:56:49,415 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) [2024-06-03 20:56:49,420 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 [2024-06-03 20:56:49,441 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-06-03 20:56:49,441 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-06-03 20:56:49,442 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-06-03 20:56:49,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-03 20:56:49,442 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-06-03 20:56:49,442 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-06-03 20:56:49,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-03 20:56:49,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-03 20:56:49,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-06-03 20:56:49,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-06-03 20:56:49,442 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-06-03 20:56:49,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-03 20:56:49,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-03 20:56:49,443 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-03 20:56:49,553 INFO L244 CfgBuilder]: Building ICFG [2024-06-03 20:56:49,555 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-03 20:56:49,842 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-03 20:56:49,843 INFO L293 CfgBuilder]: Performing block encoding [2024-06-03 20:56:49,979 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-03 20:56:49,980 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-03 20:56:49,980 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 08:56:49 BoogieIcfgContainer [2024-06-03 20:56:49,980 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-03 20:56:49,985 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-03 20:56:49,985 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-03 20:56:49,987 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-03 20:56:49,987 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 08:56:47" (1/4) ... [2024-06-03 20:56:49,989 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25c9254a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 03.06 08:56:49, skipping insertion in model container [2024-06-03 20:56:49,989 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.06 08:56:48" (2/4) ... [2024-06-03 20:56:49,989 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25c9254a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.06 08:56:49, skipping insertion in model container [2024-06-03 20:56:49,989 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 08:56:49" (3/4) ... [2024-06-03 20:56:49,990 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25c9254a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.06 08:56:49, skipping insertion in model container [2024-06-03 20:56:49,990 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 08:56:49" (4/4) ... [2024-06-03 20:56:49,991 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_27-multiple-protecting2_true.i [2024-06-03 20:56:50,003 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-03 20:56:50,004 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-03 20:56:50,004 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-03 20:56:50,045 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-06-03 20:56:50,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 66 transitions, 146 flow [2024-06-03 20:56:50,112 INFO L124 PetriNetUnfolderBase]: 0/64 cut-off events. [2024-06-03 20:56:50,113 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-06-03 20:56:50,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 64 events. 0/64 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 79 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-06-03 20:56:50,114 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 66 transitions, 146 flow [2024-06-03 20:56:50,117 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 36 transitions, 78 flow [2024-06-03 20:56:50,128 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-03 20:56:50,135 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=false, 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;@719d0cba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-03 20:56:50,135 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-03 20:56:50,139 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-03 20:56:50,139 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-06-03 20:56:50,139 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-03 20:56:50,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:56:50,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-03 20:56:50,141 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:56:50,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:56:50,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1407902652, now seen corresponding path program 1 times [2024-06-03 20:56:50,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:56:50,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681291625] [2024-06-03 20:56:50,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:56:50,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:56:50,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:56:50,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:56:50,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:56:50,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681291625] [2024-06-03 20:56:50,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681291625] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:56:50,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:56:50,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-03 20:56:50,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277783592] [2024-06-03 20:56:50,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:56:50,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-03 20:56:50,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:56:50,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-03 20:56:50,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-03 20:56:50,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 66 [2024-06-03 20:56:50,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 36 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2024-06-03 20:56:50,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:56:50,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 66 [2024-06-03 20:56:50,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:56:50,734 INFO L124 PetriNetUnfolderBase]: 456/868 cut-off events. [2024-06-03 20:56:50,734 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-06-03 20:56:50,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1681 conditions, 868 events. 456/868 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 4164 event pairs, 239 based on Foata normal form. 9/855 useless extension candidates. Maximal degree in co-relation 1667. Up to 736 conditions per place. [2024-06-03 20:56:50,744 INFO L140 encePairwiseOnDemand]: 61/66 looper letters, 35 selfloop transitions, 3 changer transitions 0/46 dead transitions. [2024-06-03 20:56:50,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 46 transitions, 177 flow [2024-06-03 20:56:50,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-03 20:56:50,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-03 20:56:50,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2024-06-03 20:56:50,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4898989898989899 [2024-06-03 20:56:50,755 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 78 flow. Second operand 3 states and 97 transitions. [2024-06-03 20:56:50,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 46 transitions, 177 flow [2024-06-03 20:56:50,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 46 transitions, 174 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-03 20:56:50,762 INFO L231 Difference]: Finished difference. Result has 44 places, 38 transitions, 97 flow [2024-06-03 20:56:50,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=97, PETRI_PLACES=44, PETRI_TRANSITIONS=38} [2024-06-03 20:56:50,768 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 1 predicate places. [2024-06-03 20:56:50,768 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 38 transitions, 97 flow [2024-06-03 20:56:50,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2024-06-03 20:56:50,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:56:50,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:56:50,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-03 20:56:50,770 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:56:50,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:56:50,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1721980601, now seen corresponding path program 1 times [2024-06-03 20:56:50,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:56:50,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984157607] [2024-06-03 20:56:50,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:56:50,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:56:50,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:56:51,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:56:51,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:56:51,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984157607] [2024-06-03 20:56:51,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984157607] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:56:51,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:56:51,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 20:56:51,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396575874] [2024-06-03 20:56:51,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:56:51,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 20:56:51,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:56:51,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 20:56:51,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-03 20:56:51,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 66 [2024-06-03 20:56:51,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 38 transitions, 97 flow. Second operand has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 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) [2024-06-03 20:56:51,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:56:51,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 66 [2024-06-03 20:56:51,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:56:51,188 INFO L124 PetriNetUnfolderBase]: 411/794 cut-off events. [2024-06-03 20:56:51,188 INFO L125 PetriNetUnfolderBase]: For 117/117 co-relation queries the response was YES. [2024-06-03 20:56:51,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1670 conditions, 794 events. 411/794 cut-off events. For 117/117 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 3665 event pairs, 62 based on Foata normal form. 28/809 useless extension candidates. Maximal degree in co-relation 1655. Up to 530 conditions per place. [2024-06-03 20:56:51,193 INFO L140 encePairwiseOnDemand]: 57/66 looper letters, 54 selfloop transitions, 11 changer transitions 0/73 dead transitions. [2024-06-03 20:56:51,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 73 transitions, 310 flow [2024-06-03 20:56:51,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 20:56:51,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 20:56:51,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 204 transitions. [2024-06-03 20:56:51,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44155844155844154 [2024-06-03 20:56:51,198 INFO L175 Difference]: Start difference. First operand has 44 places, 38 transitions, 97 flow. Second operand 7 states and 204 transitions. [2024-06-03 20:56:51,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 73 transitions, 310 flow [2024-06-03 20:56:51,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 73 transitions, 306 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-03 20:56:51,201 INFO L231 Difference]: Finished difference. Result has 52 places, 43 transitions, 155 flow [2024-06-03 20:56:51,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=155, PETRI_PLACES=52, PETRI_TRANSITIONS=43} [2024-06-03 20:56:51,201 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 9 predicate places. [2024-06-03 20:56:51,202 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 43 transitions, 155 flow [2024-06-03 20:56:51,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 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) [2024-06-03 20:56:51,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:56:51,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:56:51,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-03 20:56:51,205 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:56:51,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:56:51,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1528966906, now seen corresponding path program 1 times [2024-06-03 20:56:51,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:56:51,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551183503] [2024-06-03 20:56:51,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:56:51,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:56:51,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:56:51,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:56:51,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:56:51,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551183503] [2024-06-03 20:56:51,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551183503] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:56:51,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:56:51,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-03 20:56:51,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697941710] [2024-06-03 20:56:51,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:56:51,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-03 20:56:51,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:56:51,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-03 20:56:51,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-03 20:56:51,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 66 [2024-06-03 20:56:51,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 155 flow. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 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) [2024-06-03 20:56:51,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:56:51,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 66 [2024-06-03 20:56:51,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:56:51,556 INFO L124 PetriNetUnfolderBase]: 372/725 cut-off events. [2024-06-03 20:56:51,557 INFO L125 PetriNetUnfolderBase]: For 727/727 co-relation queries the response was YES. [2024-06-03 20:56:51,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1807 conditions, 725 events. 372/725 cut-off events. For 727/727 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3380 event pairs, 66 based on Foata normal form. 21/741 useless extension candidates. Maximal degree in co-relation 1785. Up to 512 conditions per place. [2024-06-03 20:56:51,561 INFO L140 encePairwiseOnDemand]: 59/66 looper letters, 46 selfloop transitions, 11 changer transitions 0/65 dead transitions. [2024-06-03 20:56:51,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 65 transitions, 331 flow [2024-06-03 20:56:51,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 20:56:51,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 20:56:51,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 146 transitions. [2024-06-03 20:56:51,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44242424242424244 [2024-06-03 20:56:51,564 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 155 flow. Second operand 5 states and 146 transitions. [2024-06-03 20:56:51,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 65 transitions, 331 flow [2024-06-03 20:56:51,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 65 transitions, 316 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-03 20:56:51,570 INFO L231 Difference]: Finished difference. Result has 57 places, 49 transitions, 211 flow [2024-06-03 20:56:51,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=211, PETRI_PLACES=57, PETRI_TRANSITIONS=49} [2024-06-03 20:56:51,572 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 14 predicate places. [2024-06-03 20:56:51,572 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 49 transitions, 211 flow [2024-06-03 20:56:51,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 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) [2024-06-03 20:56:51,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:56:51,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:56:51,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-03 20:56:51,575 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:56:51,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:56:51,576 INFO L85 PathProgramCache]: Analyzing trace with hash -295878395, now seen corresponding path program 1 times [2024-06-03 20:56:51,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:56:51,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56939795] [2024-06-03 20:56:51,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:56:51,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:56:51,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:56:51,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:56:51,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:56:51,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56939795] [2024-06-03 20:56:51,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56939795] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:56:51,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:56:51,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 20:56:51,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230549202] [2024-06-03 20:56:51,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:56:51,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 20:56:51,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:56:51,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 20:56:51,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-03 20:56:51,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 66 [2024-06-03 20:56:51,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 49 transitions, 211 flow. Second operand has 8 states, 8 states have (on average 20.875) internal successors, (167), 8 states have internal predecessors, (167), 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) [2024-06-03 20:56:51,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:56:51,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 66 [2024-06-03 20:56:51,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:56:52,123 INFO L124 PetriNetUnfolderBase]: 499/984 cut-off events. [2024-06-03 20:56:52,123 INFO L125 PetriNetUnfolderBase]: For 2333/2333 co-relation queries the response was YES. [2024-06-03 20:56:52,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2661 conditions, 984 events. 499/984 cut-off events. For 2333/2333 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 4929 event pairs, 140 based on Foata normal form. 31/1012 useless extension candidates. Maximal degree in co-relation 2636. Up to 627 conditions per place. [2024-06-03 20:56:52,131 INFO L140 encePairwiseOnDemand]: 55/66 looper letters, 64 selfloop transitions, 18 changer transitions 9/99 dead transitions. [2024-06-03 20:56:52,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 99 transitions, 546 flow [2024-06-03 20:56:52,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:56:52,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:56:52,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 255 transitions. [2024-06-03 20:56:52,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4292929292929293 [2024-06-03 20:56:52,133 INFO L175 Difference]: Start difference. First operand has 57 places, 49 transitions, 211 flow. Second operand 9 states and 255 transitions. [2024-06-03 20:56:52,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 99 transitions, 546 flow [2024-06-03 20:56:52,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 99 transitions, 537 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-03 20:56:52,139 INFO L231 Difference]: Finished difference. Result has 69 places, 60 transitions, 351 flow [2024-06-03 20:56:52,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=351, PETRI_PLACES=69, PETRI_TRANSITIONS=60} [2024-06-03 20:56:52,153 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 26 predicate places. [2024-06-03 20:56:52,153 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 60 transitions, 351 flow [2024-06-03 20:56:52,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.875) internal successors, (167), 8 states have internal predecessors, (167), 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) [2024-06-03 20:56:52,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:56:52,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:56:52,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-03 20:56:52,154 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:56:52,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:56:52,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1873934903, now seen corresponding path program 2 times [2024-06-03 20:56:52,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:56:52,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657713889] [2024-06-03 20:56:52,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:56:52,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:56:52,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:56:52,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:56:52,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:56:52,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657713889] [2024-06-03 20:56:52,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657713889] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:56:52,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:56:52,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 20:56:52,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636382917] [2024-06-03 20:56:52,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:56:52,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 20:56:52,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:56:52,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 20:56:52,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-03 20:56:52,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 66 [2024-06-03 20:56:52,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 60 transitions, 351 flow. Second operand has 8 states, 8 states have (on average 20.875) internal successors, (167), 8 states have internal predecessors, (167), 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) [2024-06-03 20:56:52,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:56:52,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 66 [2024-06-03 20:56:52,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:56:52,641 INFO L124 PetriNetUnfolderBase]: 578/1142 cut-off events. [2024-06-03 20:56:52,641 INFO L125 PetriNetUnfolderBase]: For 5517/5517 co-relation queries the response was YES. [2024-06-03 20:56:52,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3556 conditions, 1142 events. 578/1142 cut-off events. For 5517/5517 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 6008 event pairs, 190 based on Foata normal form. 31/1168 useless extension candidates. Maximal degree in co-relation 3523. Up to 764 conditions per place. [2024-06-03 20:56:52,647 INFO L140 encePairwiseOnDemand]: 55/66 looper letters, 69 selfloop transitions, 19 changer transitions 9/105 dead transitions. [2024-06-03 20:56:52,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 105 transitions, 711 flow [2024-06-03 20:56:52,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:56:52,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:56:52,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 252 transitions. [2024-06-03 20:56:52,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-06-03 20:56:52,649 INFO L175 Difference]: Start difference. First operand has 69 places, 60 transitions, 351 flow. Second operand 9 states and 252 transitions. [2024-06-03 20:56:52,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 105 transitions, 711 flow [2024-06-03 20:56:52,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 105 transitions, 682 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-03 20:56:52,655 INFO L231 Difference]: Finished difference. Result has 79 places, 69 transitions, 479 flow [2024-06-03 20:56:52,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=479, PETRI_PLACES=79, PETRI_TRANSITIONS=69} [2024-06-03 20:56:52,655 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 36 predicate places. [2024-06-03 20:56:52,656 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 69 transitions, 479 flow [2024-06-03 20:56:52,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.875) internal successors, (167), 8 states have internal predecessors, (167), 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) [2024-06-03 20:56:52,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:56:52,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:56:52,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-03 20:56:52,656 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:56:52,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:56:52,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1877186377, now seen corresponding path program 3 times [2024-06-03 20:56:52,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:56:52,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441697372] [2024-06-03 20:56:52,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:56:52,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:56:52,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:56:52,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:56:52,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:56:52,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441697372] [2024-06-03 20:56:52,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441697372] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:56:52,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:56:52,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 20:56:52,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005454743] [2024-06-03 20:56:52,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:56:52,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 20:56:52,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:56:52,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 20:56:52,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-03 20:56:52,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 66 [2024-06-03 20:56:52,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 69 transitions, 479 flow. Second operand has 8 states, 8 states have (on average 20.875) internal successors, (167), 8 states have internal predecessors, (167), 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) [2024-06-03 20:56:52,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:56:52,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 66 [2024-06-03 20:56:52,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:56:53,034 INFO L124 PetriNetUnfolderBase]: 557/1099 cut-off events. [2024-06-03 20:56:53,034 INFO L125 PetriNetUnfolderBase]: For 6823/6823 co-relation queries the response was YES. [2024-06-03 20:56:53,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3865 conditions, 1099 events. 557/1099 cut-off events. For 6823/6823 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 5767 event pairs, 79 based on Foata normal form. 3/1098 useless extension candidates. Maximal degree in co-relation 3825. Up to 652 conditions per place. [2024-06-03 20:56:53,040 INFO L140 encePairwiseOnDemand]: 54/66 looper letters, 60 selfloop transitions, 35 changer transitions 0/103 dead transitions. [2024-06-03 20:56:53,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 103 transitions, 777 flow [2024-06-03 20:56:53,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 20:56:53,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 20:56:53,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 221 transitions. [2024-06-03 20:56:53,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4185606060606061 [2024-06-03 20:56:53,042 INFO L175 Difference]: Start difference. First operand has 79 places, 69 transitions, 479 flow. Second operand 8 states and 221 transitions. [2024-06-03 20:56:53,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 103 transitions, 777 flow [2024-06-03 20:56:53,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 103 transitions, 741 flow, removed 13 selfloop flow, removed 1 redundant places. [2024-06-03 20:56:53,050 INFO L231 Difference]: Finished difference. Result has 89 places, 80 transitions, 612 flow [2024-06-03 20:56:53,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=443, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=612, PETRI_PLACES=89, PETRI_TRANSITIONS=80} [2024-06-03 20:56:53,051 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 46 predicate places. [2024-06-03 20:56:53,051 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 80 transitions, 612 flow [2024-06-03 20:56:53,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.875) internal successors, (167), 8 states have internal predecessors, (167), 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) [2024-06-03 20:56:53,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:56:53,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:56:53,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-03 20:56:53,052 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:56:53,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:56:53,052 INFO L85 PathProgramCache]: Analyzing trace with hash -736713525, now seen corresponding path program 4 times [2024-06-03 20:56:53,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:56:53,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071074847] [2024-06-03 20:56:53,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:56:53,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:56:53,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:56:53,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:56:53,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:56:53,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071074847] [2024-06-03 20:56:53,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071074847] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:56:53,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:56:53,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 20:56:53,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955793735] [2024-06-03 20:56:53,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:56:53,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 20:56:53,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:56:53,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 20:56:53,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-03 20:56:53,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 66 [2024-06-03 20:56:53,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 80 transitions, 612 flow. Second operand has 8 states, 8 states have (on average 20.875) internal successors, (167), 8 states have internal predecessors, (167), 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) [2024-06-03 20:56:53,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:56:53,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 66 [2024-06-03 20:56:53,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:56:53,451 INFO L124 PetriNetUnfolderBase]: 672/1325 cut-off events. [2024-06-03 20:56:53,452 INFO L125 PetriNetUnfolderBase]: For 11547/11547 co-relation queries the response was YES. [2024-06-03 20:56:53,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5016 conditions, 1325 events. 672/1325 cut-off events. For 11547/11547 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 7275 event pairs, 181 based on Foata normal form. 31/1353 useless extension candidates. Maximal degree in co-relation 4971. Up to 926 conditions per place. [2024-06-03 20:56:53,459 INFO L140 encePairwiseOnDemand]: 55/66 looper letters, 91 selfloop transitions, 19 changer transitions 9/127 dead transitions. [2024-06-03 20:56:53,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 127 transitions, 1046 flow [2024-06-03 20:56:53,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:56:53,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:56:53,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 255 transitions. [2024-06-03 20:56:53,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4292929292929293 [2024-06-03 20:56:53,461 INFO L175 Difference]: Start difference. First operand has 89 places, 80 transitions, 612 flow. Second operand 9 states and 255 transitions. [2024-06-03 20:56:53,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 127 transitions, 1046 flow [2024-06-03 20:56:53,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 127 transitions, 979 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-03 20:56:53,474 INFO L231 Difference]: Finished difference. Result has 98 places, 88 transitions, 686 flow [2024-06-03 20:56:53,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=545, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=686, PETRI_PLACES=98, PETRI_TRANSITIONS=88} [2024-06-03 20:56:53,474 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 55 predicate places. [2024-06-03 20:56:53,474 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 88 transitions, 686 flow [2024-06-03 20:56:53,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.875) internal successors, (167), 8 states have internal predecessors, (167), 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) [2024-06-03 20:56:53,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:56:53,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:56:53,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-03 20:56:53,475 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:56:53,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:56:53,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1873946993, now seen corresponding path program 5 times [2024-06-03 20:56:53,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:56:53,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526950286] [2024-06-03 20:56:53,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:56:53,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:56:53,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:56:53,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:56:53,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:56:53,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526950286] [2024-06-03 20:56:53,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526950286] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:56:53,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:56:53,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 20:56:53,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574519041] [2024-06-03 20:56:53,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:56:53,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 20:56:53,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:56:53,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 20:56:53,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-03 20:56:53,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 66 [2024-06-03 20:56:53,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 88 transitions, 686 flow. Second operand has 8 states, 8 states have (on average 20.875) internal successors, (167), 8 states have internal predecessors, (167), 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) [2024-06-03 20:56:53,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:56:53,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 66 [2024-06-03 20:56:53,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:56:53,876 INFO L124 PetriNetUnfolderBase]: 751/1483 cut-off events. [2024-06-03 20:56:53,876 INFO L125 PetriNetUnfolderBase]: For 17417/17417 co-relation queries the response was YES. [2024-06-03 20:56:53,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5879 conditions, 1483 events. 751/1483 cut-off events. For 17417/17417 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 8482 event pairs, 231 based on Foata normal form. 31/1509 useless extension candidates. Maximal degree in co-relation 5828. Up to 1063 conditions per place. [2024-06-03 20:56:53,885 INFO L140 encePairwiseOnDemand]: 55/66 looper letters, 96 selfloop transitions, 19 changer transitions 9/132 dead transitions. [2024-06-03 20:56:53,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 132 transitions, 1156 flow [2024-06-03 20:56:53,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:56:53,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:56:53,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 252 transitions. [2024-06-03 20:56:53,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-06-03 20:56:53,887 INFO L175 Difference]: Start difference. First operand has 98 places, 88 transitions, 686 flow. Second operand 9 states and 252 transitions. [2024-06-03 20:56:53,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 132 transitions, 1156 flow [2024-06-03 20:56:53,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 132 transitions, 1107 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-03 20:56:53,901 INFO L231 Difference]: Finished difference. Result has 106 places, 96 transitions, 798 flow [2024-06-03 20:56:53,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=637, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=798, PETRI_PLACES=106, PETRI_TRANSITIONS=96} [2024-06-03 20:56:53,902 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 63 predicate places. [2024-06-03 20:56:53,902 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 96 transitions, 798 flow [2024-06-03 20:56:53,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.875) internal successors, (167), 8 states have internal predecessors, (167), 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) [2024-06-03 20:56:53,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:56:53,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:56:53,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-03 20:56:53,903 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:56:53,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:56:53,903 INFO L85 PathProgramCache]: Analyzing trace with hash -141051889, now seen corresponding path program 6 times [2024-06-03 20:56:53,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:56:53,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570869575] [2024-06-03 20:56:53,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:56:53,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:56:53,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:56:54,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:56:54,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:56:54,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570869575] [2024-06-03 20:56:54,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570869575] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:56:54,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:56:54,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 20:56:54,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294570375] [2024-06-03 20:56:54,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:56:54,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 20:56:54,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:56:54,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 20:56:54,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-03 20:56:54,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 66 [2024-06-03 20:56:54,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 96 transitions, 798 flow. Second operand has 8 states, 8 states have (on average 20.875) internal successors, (167), 8 states have internal predecessors, (167), 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) [2024-06-03 20:56:54,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:56:54,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 66 [2024-06-03 20:56:54,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:56:54,327 INFO L124 PetriNetUnfolderBase]: 787/1558 cut-off events. [2024-06-03 20:56:54,327 INFO L125 PetriNetUnfolderBase]: For 22685/22685 co-relation queries the response was YES. [2024-06-03 20:56:54,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6479 conditions, 1558 events. 787/1558 cut-off events. For 22685/22685 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 9068 event pairs, 219 based on Foata normal form. 31/1584 useless extension candidates. Maximal degree in co-relation 6422. Up to 983 conditions per place. [2024-06-03 20:56:54,337 INFO L140 encePairwiseOnDemand]: 55/66 looper letters, 90 selfloop transitions, 30 changer transitions 8/136 dead transitions. [2024-06-03 20:56:54,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 136 transitions, 1252 flow [2024-06-03 20:56:54,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:56:54,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:56:54,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 248 transitions. [2024-06-03 20:56:54,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4175084175084175 [2024-06-03 20:56:54,339 INFO L175 Difference]: Start difference. First operand has 106 places, 96 transitions, 798 flow. Second operand 9 states and 248 transitions. [2024-06-03 20:56:54,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 136 transitions, 1252 flow [2024-06-03 20:56:54,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 136 transitions, 1185 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-03 20:56:54,356 INFO L231 Difference]: Finished difference. Result has 114 places, 101 transitions, 887 flow [2024-06-03 20:56:54,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=731, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=887, PETRI_PLACES=114, PETRI_TRANSITIONS=101} [2024-06-03 20:56:54,357 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 71 predicate places. [2024-06-03 20:56:54,357 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 101 transitions, 887 flow [2024-06-03 20:56:54,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.875) internal successors, (167), 8 states have internal predecessors, (167), 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) [2024-06-03 20:56:54,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:56:54,358 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] [2024-06-03 20:56:54,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-03 20:56:54,358 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:56:54,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:56:54,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1936750179, now seen corresponding path program 1 times [2024-06-03 20:56:54,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:56:54,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887601407] [2024-06-03 20:56:54,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:56:54,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:56:54,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:56:54,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:56:54,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:56:54,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887601407] [2024-06-03 20:56:54,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887601407] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:56:54,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:56:54,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 20:56:54,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131916104] [2024-06-03 20:56:54,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:56:54,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 20:56:54,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:56:54,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 20:56:54,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-03 20:56:54,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 66 [2024-06-03 20:56:54,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 101 transitions, 887 flow. Second operand has 8 states, 8 states have (on average 21.0) internal successors, (168), 8 states have internal predecessors, (168), 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) [2024-06-03 20:56:54,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:56:54,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 66 [2024-06-03 20:56:54,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:56:54,770 INFO L124 PetriNetUnfolderBase]: 797/1594 cut-off events. [2024-06-03 20:56:54,771 INFO L125 PetriNetUnfolderBase]: For 26145/26145 co-relation queries the response was YES. [2024-06-03 20:56:54,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6597 conditions, 1594 events. 797/1594 cut-off events. For 26145/26145 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 9460 event pairs, 132 based on Foata normal form. 36/1627 useless extension candidates. Maximal degree in co-relation 6534. Up to 919 conditions per place. [2024-06-03 20:56:54,781 INFO L140 encePairwiseOnDemand]: 55/66 looper letters, 99 selfloop transitions, 31 changer transitions 13/151 dead transitions. [2024-06-03 20:56:54,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 151 transitions, 1451 flow [2024-06-03 20:56:54,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:56:54,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:56:54,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 263 transitions. [2024-06-03 20:56:54,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44276094276094274 [2024-06-03 20:56:54,782 INFO L175 Difference]: Start difference. First operand has 114 places, 101 transitions, 887 flow. Second operand 9 states and 263 transitions. [2024-06-03 20:56:54,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 151 transitions, 1451 flow [2024-06-03 20:56:54,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 151 transitions, 1342 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-03 20:56:54,802 INFO L231 Difference]: Finished difference. Result has 121 places, 102 transitions, 919 flow [2024-06-03 20:56:54,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=778, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=919, PETRI_PLACES=121, PETRI_TRANSITIONS=102} [2024-06-03 20:56:54,803 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 78 predicate places. [2024-06-03 20:56:54,803 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 102 transitions, 919 flow [2024-06-03 20:56:54,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.0) internal successors, (168), 8 states have internal predecessors, (168), 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) [2024-06-03 20:56:54,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:56:54,803 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, 1] [2024-06-03 20:56:54,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-03 20:56:54,804 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:56:54,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:56:54,804 INFO L85 PathProgramCache]: Analyzing trace with hash -664733499, now seen corresponding path program 1 times [2024-06-03 20:56:54,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:56:54,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109888528] [2024-06-03 20:56:54,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:56:54,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:56:54,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:56:54,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:56:54,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:56:54,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109888528] [2024-06-03 20:56:54,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109888528] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:56:54,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:56:54,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:56:54,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986753679] [2024-06-03 20:56:55,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:56:55,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:56:55,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:56:55,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:56:55,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:56:55,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 66 [2024-06-03 20:56:55,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 102 transitions, 919 flow. Second operand has 10 states, 10 states have (on average 20.8) internal successors, (208), 10 states have internal predecessors, (208), 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) [2024-06-03 20:56:55,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:56:55,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 66 [2024-06-03 20:56:55,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:56:55,307 INFO L124 PetriNetUnfolderBase]: 732/1462 cut-off events. [2024-06-03 20:56:55,308 INFO L125 PetriNetUnfolderBase]: For 20380/20380 co-relation queries the response was YES. [2024-06-03 20:56:55,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6245 conditions, 1462 events. 732/1462 cut-off events. For 20380/20380 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 8547 event pairs, 158 based on Foata normal form. 1/1459 useless extension candidates. Maximal degree in co-relation 6178. Up to 961 conditions per place. [2024-06-03 20:56:55,318 INFO L140 encePairwiseOnDemand]: 52/66 looper letters, 82 selfloop transitions, 38 changer transitions 0/128 dead transitions. [2024-06-03 20:56:55,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 128 transitions, 1243 flow [2024-06-03 20:56:55,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:56:55,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:56:55,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 262 transitions. [2024-06-03 20:56:55,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396969696969697 [2024-06-03 20:56:55,319 INFO L175 Difference]: Start difference. First operand has 121 places, 102 transitions, 919 flow. Second operand 10 states and 262 transitions. [2024-06-03 20:56:55,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 128 transitions, 1243 flow [2024-06-03 20:56:55,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 128 transitions, 1131 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-06-03 20:56:55,341 INFO L231 Difference]: Finished difference. Result has 121 places, 104 transitions, 898 flow [2024-06-03 20:56:55,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=807, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=898, PETRI_PLACES=121, PETRI_TRANSITIONS=104} [2024-06-03 20:56:55,342 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 78 predicate places. [2024-06-03 20:56:55,342 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 104 transitions, 898 flow [2024-06-03 20:56:55,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 20.8) internal successors, (208), 10 states have internal predecessors, (208), 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) [2024-06-03 20:56:55,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:56:55,342 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, 1] [2024-06-03 20:56:55,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-03 20:56:55,343 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:56:55,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:56:55,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1872805063, now seen corresponding path program 2 times [2024-06-03 20:56:55,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:56:55,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48904423] [2024-06-03 20:56:55,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:56:55,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:56:55,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:56:55,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:56:55,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:56:55,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48904423] [2024-06-03 20:56:55,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48904423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:56:55,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:56:55,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 20:56:55,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775222094] [2024-06-03 20:56:55,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:56:55,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 20:56:55,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:56:55,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 20:56:55,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-03 20:56:55,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 66 [2024-06-03 20:56:55,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 104 transitions, 898 flow. Second operand has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 7 states have internal predecessors, (151), 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) [2024-06-03 20:56:55,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:56:55,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 66 [2024-06-03 20:56:55,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:56:55,710 INFO L124 PetriNetUnfolderBase]: 853/1708 cut-off events. [2024-06-03 20:56:55,710 INFO L125 PetriNetUnfolderBase]: For 31672/31672 co-relation queries the response was YES. [2024-06-03 20:56:55,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7574 conditions, 1708 events. 853/1708 cut-off events. For 31672/31672 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 10334 event pairs, 232 based on Foata normal form. 28/1731 useless extension candidates. Maximal degree in co-relation 7510. Up to 726 conditions per place. [2024-06-03 20:56:55,721 INFO L140 encePairwiseOnDemand]: 58/66 looper letters, 81 selfloop transitions, 34 changer transitions 20/143 dead transitions. [2024-06-03 20:56:55,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 143 transitions, 1543 flow [2024-06-03 20:56:55,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 20:56:55,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 20:56:55,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 206 transitions. [2024-06-03 20:56:55,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4458874458874459 [2024-06-03 20:56:55,722 INFO L175 Difference]: Start difference. First operand has 121 places, 104 transitions, 898 flow. Second operand 7 states and 206 transitions. [2024-06-03 20:56:55,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 143 transitions, 1543 flow [2024-06-03 20:56:55,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 143 transitions, 1466 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-03 20:56:55,746 INFO L231 Difference]: Finished difference. Result has 122 places, 93 transitions, 888 flow [2024-06-03 20:56:55,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=823, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=888, PETRI_PLACES=122, PETRI_TRANSITIONS=93} [2024-06-03 20:56:55,747 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 79 predicate places. [2024-06-03 20:56:55,747 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 93 transitions, 888 flow [2024-06-03 20:56:55,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.571428571428573) internal successors, (151), 7 states have internal predecessors, (151), 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) [2024-06-03 20:56:55,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:56:55,748 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, 1] [2024-06-03 20:56:55,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-03 20:56:55,748 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:56:55,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:56:55,748 INFO L85 PathProgramCache]: Analyzing trace with hash 372780263, now seen corresponding path program 3 times [2024-06-03 20:56:55,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:56:55,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652148549] [2024-06-03 20:56:55,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:56:55,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:56:55,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:56:55,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:56:55,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:56:55,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652148549] [2024-06-03 20:56:55,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652148549] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:56:55,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:56:55,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-03 20:56:55,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197048506] [2024-06-03 20:56:55,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:56:55,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-03 20:56:55,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:56:55,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-03 20:56:55,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-03 20:56:55,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 66 [2024-06-03 20:56:55,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 93 transitions, 888 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2024-06-03 20:56:55,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:56:55,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 66 [2024-06-03 20:56:55,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:56:55,904 INFO L124 PetriNetUnfolderBase]: 400/904 cut-off events. [2024-06-03 20:56:55,904 INFO L125 PetriNetUnfolderBase]: For 16179/16343 co-relation queries the response was YES. [2024-06-03 20:56:55,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4730 conditions, 904 events. 400/904 cut-off events. For 16179/16343 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 4974 event pairs, 148 based on Foata normal form. 103/974 useless extension candidates. Maximal degree in co-relation 4664. Up to 434 conditions per place. [2024-06-03 20:56:55,912 INFO L140 encePairwiseOnDemand]: 56/66 looper letters, 86 selfloop transitions, 22 changer transitions 1/118 dead transitions. [2024-06-03 20:56:55,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 118 transitions, 1394 flow [2024-06-03 20:56:55,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-03 20:56:55,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-03 20:56:55,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 109 transitions. [2024-06-03 20:56:55,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5505050505050505 [2024-06-03 20:56:55,913 INFO L175 Difference]: Start difference. First operand has 122 places, 93 transitions, 888 flow. Second operand 3 states and 109 transitions. [2024-06-03 20:56:55,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 118 transitions, 1394 flow [2024-06-03 20:56:55,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 118 transitions, 1253 flow, removed 34 selfloop flow, removed 13 redundant places. [2024-06-03 20:56:55,968 INFO L231 Difference]: Finished difference. Result has 108 places, 100 transitions, 964 flow [2024-06-03 20:56:55,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=751, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=964, PETRI_PLACES=108, PETRI_TRANSITIONS=100} [2024-06-03 20:56:55,968 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 65 predicate places. [2024-06-03 20:56:55,969 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 100 transitions, 964 flow [2024-06-03 20:56:55,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2024-06-03 20:56:55,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:56:55,969 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, 1, 1] [2024-06-03 20:56:55,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-03 20:56:55,969 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:56:55,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:56:55,970 INFO L85 PathProgramCache]: Analyzing trace with hash -167713524, now seen corresponding path program 1 times [2024-06-03 20:56:55,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:56:55,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668223403] [2024-06-03 20:56:55,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:56:55,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:56:55,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:56:56,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:56:56,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:56:56,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668223403] [2024-06-03 20:56:56,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668223403] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:56:56,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:56:56,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 20:56:56,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824107480] [2024-06-03 20:56:56,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:56:56,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 20:56:56,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:56:56,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 20:56:56,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-03 20:56:56,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 66 [2024-06-03 20:56:56,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 100 transitions, 964 flow. Second operand has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 7 states have internal predecessors, (152), 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) [2024-06-03 20:56:56,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:56:56,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 66 [2024-06-03 20:56:56,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:56:56,314 INFO L124 PetriNetUnfolderBase]: 469/1052 cut-off events. [2024-06-03 20:56:56,314 INFO L125 PetriNetUnfolderBase]: For 21842/21854 co-relation queries the response was YES. [2024-06-03 20:56:56,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5597 conditions, 1052 events. 469/1052 cut-off events. For 21842/21854 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 5927 event pairs, 152 based on Foata normal form. 23/1067 useless extension candidates. Maximal degree in co-relation 5542. Up to 727 conditions per place. [2024-06-03 20:56:56,320 INFO L140 encePairwiseOnDemand]: 59/66 looper letters, 83 selfloop transitions, 8 changer transitions 29/128 dead transitions. [2024-06-03 20:56:56,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 128 transitions, 1404 flow [2024-06-03 20:56:56,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 20:56:56,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 20:56:56,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 195 transitions. [2024-06-03 20:56:56,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42207792207792205 [2024-06-03 20:56:56,322 INFO L175 Difference]: Start difference. First operand has 108 places, 100 transitions, 964 flow. Second operand 7 states and 195 transitions. [2024-06-03 20:56:56,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 128 transitions, 1404 flow [2024-06-03 20:56:56,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 128 transitions, 1368 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-03 20:56:56,343 INFO L231 Difference]: Finished difference. Result has 114 places, 94 transitions, 919 flow [2024-06-03 20:56:56,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=940, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=919, PETRI_PLACES=114, PETRI_TRANSITIONS=94} [2024-06-03 20:56:56,344 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 71 predicate places. [2024-06-03 20:56:56,344 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 94 transitions, 919 flow [2024-06-03 20:56:56,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 7 states have internal predecessors, (152), 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) [2024-06-03 20:56:56,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:56:56,344 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, 1, 1] [2024-06-03 20:56:56,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-03 20:56:56,345 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:56:56,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:56:56,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1975647216, now seen corresponding path program 2 times [2024-06-03 20:56:56,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:56:56,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381203068] [2024-06-03 20:56:56,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:56:56,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:56:56,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:56:56,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:56:56,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:56:56,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381203068] [2024-06-03 20:56:56,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381203068] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:56:56,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:56:56,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:56:56,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675643480] [2024-06-03 20:56:56,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:56:56,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:56:56,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:56:56,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:56:56,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:56:56,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 66 [2024-06-03 20:56:56,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 94 transitions, 919 flow. Second operand has 10 states, 10 states have (on average 20.9) internal successors, (209), 10 states have internal predecessors, (209), 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) [2024-06-03 20:56:56,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:56:56,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 66 [2024-06-03 20:56:56,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:56:56,747 INFO L124 PetriNetUnfolderBase]: 401/892 cut-off events. [2024-06-03 20:56:56,747 INFO L125 PetriNetUnfolderBase]: For 18404/18416 co-relation queries the response was YES. [2024-06-03 20:56:56,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4941 conditions, 892 events. 401/892 cut-off events. For 18404/18416 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4737 event pairs, 117 based on Foata normal form. 1/889 useless extension candidates. Maximal degree in co-relation 4884. Up to 718 conditions per place. [2024-06-03 20:56:56,752 INFO L140 encePairwiseOnDemand]: 53/66 looper letters, 91 selfloop transitions, 18 changer transitions 0/117 dead transitions. [2024-06-03 20:56:56,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 117 transitions, 1233 flow [2024-06-03 20:56:56,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:56:56,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:56:56,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 252 transitions. [2024-06-03 20:56:56,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2024-06-03 20:56:56,755 INFO L175 Difference]: Start difference. First operand has 114 places, 94 transitions, 919 flow. Second operand 10 states and 252 transitions. [2024-06-03 20:56:56,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 117 transitions, 1233 flow [2024-06-03 20:56:56,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 117 transitions, 1156 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-03 20:56:56,771 INFO L231 Difference]: Finished difference. Result has 109 places, 97 transitions, 921 flow [2024-06-03 20:56:56,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=856, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=921, PETRI_PLACES=109, PETRI_TRANSITIONS=97} [2024-06-03 20:56:56,772 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 66 predicate places. [2024-06-03 20:56:56,772 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 97 transitions, 921 flow [2024-06-03 20:56:56,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 20.9) internal successors, (209), 10 states have internal predecessors, (209), 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) [2024-06-03 20:56:56,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:56:56,773 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, 1, 1] [2024-06-03 20:56:56,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-03 20:56:56,773 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:56:56,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:56:56,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1657566033, now seen corresponding path program 1 times [2024-06-03 20:56:56,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:56:56,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699206172] [2024-06-03 20:56:56,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:56:56,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:56:56,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:56:56,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:56:56,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:56:56,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699206172] [2024-06-03 20:56:56,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699206172] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:56:56,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:56:56,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:56:56,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119635075] [2024-06-03 20:56:56,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:56:56,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:56:56,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:56:56,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:56:56,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:56:56,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 66 [2024-06-03 20:56:56,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 97 transitions, 921 flow. Second operand has 10 states, 10 states have (on average 20.9) internal successors, (209), 10 states have internal predecessors, (209), 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) [2024-06-03 20:56:56,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:56:56,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 66 [2024-06-03 20:56:56,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:56:57,188 INFO L124 PetriNetUnfolderBase]: 402/893 cut-off events. [2024-06-03 20:56:57,189 INFO L125 PetriNetUnfolderBase]: For 14802/14814 co-relation queries the response was YES. [2024-06-03 20:56:57,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4732 conditions, 893 events. 402/893 cut-off events. For 14802/14814 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 4750 event pairs, 114 based on Foata normal form. 1/890 useless extension candidates. Maximal degree in co-relation 4678. Up to 692 conditions per place. [2024-06-03 20:56:57,195 INFO L140 encePairwiseOnDemand]: 52/66 looper letters, 91 selfloop transitions, 23 changer transitions 0/122 dead transitions. [2024-06-03 20:56:57,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 122 transitions, 1243 flow [2024-06-03 20:56:57,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:56:57,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:56:57,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 256 transitions. [2024-06-03 20:56:57,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3878787878787879 [2024-06-03 20:56:57,196 INFO L175 Difference]: Start difference. First operand has 109 places, 97 transitions, 921 flow. Second operand 10 states and 256 transitions. [2024-06-03 20:56:57,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 122 transitions, 1243 flow [2024-06-03 20:56:57,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 122 transitions, 1209 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-03 20:56:57,212 INFO L231 Difference]: Finished difference. Result has 113 places, 100 transitions, 964 flow [2024-06-03 20:56:57,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=887, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=964, PETRI_PLACES=113, PETRI_TRANSITIONS=100} [2024-06-03 20:56:57,212 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 70 predicate places. [2024-06-03 20:56:57,212 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 100 transitions, 964 flow [2024-06-03 20:56:57,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 20.9) internal successors, (209), 10 states have internal predecessors, (209), 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) [2024-06-03 20:56:57,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:56:57,213 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, 1, 1] [2024-06-03 20:56:57,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-03 20:56:57,213 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:56:57,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:56:57,214 INFO L85 PathProgramCache]: Analyzing trace with hash -2004387678, now seen corresponding path program 1 times [2024-06-03 20:56:57,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:56:57,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13534731] [2024-06-03 20:56:57,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:56:57,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:56:57,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:56:57,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:56:57,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:56:57,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13534731] [2024-06-03 20:56:57,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13534731] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:56:57,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:56:57,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 20:56:57,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66070011] [2024-06-03 20:56:57,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:56:57,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 20:56:57,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:56:57,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 20:56:57,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-03 20:56:57,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 66 [2024-06-03 20:56:57,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 100 transitions, 964 flow. Second operand has 9 states, 9 states have (on average 21.11111111111111) internal successors, (190), 9 states have internal predecessors, (190), 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) [2024-06-03 20:56:57,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:56:57,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 66 [2024-06-03 20:56:57,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:56:57,591 INFO L124 PetriNetUnfolderBase]: 407/904 cut-off events. [2024-06-03 20:56:57,592 INFO L125 PetriNetUnfolderBase]: For 16090/16090 co-relation queries the response was YES. [2024-06-03 20:56:57,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4953 conditions, 904 events. 407/904 cut-off events. For 16090/16090 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 4808 event pairs, 112 based on Foata normal form. 1/902 useless extension candidates. Maximal degree in co-relation 4897. Up to 720 conditions per place. [2024-06-03 20:56:57,597 INFO L140 encePairwiseOnDemand]: 54/66 looper letters, 93 selfloop transitions, 21 changer transitions 0/122 dead transitions. [2024-06-03 20:56:57,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 122 transitions, 1295 flow [2024-06-03 20:56:57,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:56:57,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:56:57,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 232 transitions. [2024-06-03 20:56:57,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39057239057239057 [2024-06-03 20:56:57,599 INFO L175 Difference]: Start difference. First operand has 113 places, 100 transitions, 964 flow. Second operand 9 states and 232 transitions. [2024-06-03 20:56:57,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 122 transitions, 1295 flow [2024-06-03 20:56:57,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 122 transitions, 1255 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-03 20:56:57,614 INFO L231 Difference]: Finished difference. Result has 117 places, 105 transitions, 1033 flow [2024-06-03 20:56:57,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=926, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1033, PETRI_PLACES=117, PETRI_TRANSITIONS=105} [2024-06-03 20:56:57,614 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 74 predicate places. [2024-06-03 20:56:57,615 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 105 transitions, 1033 flow [2024-06-03 20:56:57,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 21.11111111111111) internal successors, (190), 9 states have internal predecessors, (190), 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) [2024-06-03 20:56:57,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:56:57,615 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, 1, 1] [2024-06-03 20:56:57,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-03 20:56:57,615 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:56:57,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:56:57,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1714258900, now seen corresponding path program 3 times [2024-06-03 20:56:57,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:56:57,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564703670] [2024-06-03 20:56:57,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:56:57,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:56:57,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:56:57,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:56:57,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:56:57,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564703670] [2024-06-03 20:56:57,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564703670] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:56:57,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:56:57,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:56:57,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752665206] [2024-06-03 20:56:57,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:56:57,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:56:57,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:56:57,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:56:57,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:56:57,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 66 [2024-06-03 20:56:57,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 105 transitions, 1033 flow. Second operand has 10 states, 10 states have (on average 20.9) internal successors, (209), 10 states have internal predecessors, (209), 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) [2024-06-03 20:56:57,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:56:57,816 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 66 [2024-06-03 20:56:57,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:56:58,000 INFO L124 PetriNetUnfolderBase]: 406/903 cut-off events. [2024-06-03 20:56:58,001 INFO L125 PetriNetUnfolderBase]: For 16904/16904 co-relation queries the response was YES. [2024-06-03 20:56:58,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5064 conditions, 903 events. 406/903 cut-off events. For 16904/16904 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4843 event pairs, 120 based on Foata normal form. 1/899 useless extension candidates. Maximal degree in co-relation 5006. Up to 729 conditions per place. [2024-06-03 20:56:58,006 INFO L140 encePairwiseOnDemand]: 53/66 looper letters, 98 selfloop transitions, 19 changer transitions 0/125 dead transitions. [2024-06-03 20:56:58,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 125 transitions, 1372 flow [2024-06-03 20:56:58,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:56:58,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:56:58,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 248 transitions. [2024-06-03 20:56:58,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37575757575757573 [2024-06-03 20:56:58,007 INFO L175 Difference]: Start difference. First operand has 117 places, 105 transitions, 1033 flow. Second operand 10 states and 248 transitions. [2024-06-03 20:56:58,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 125 transitions, 1372 flow [2024-06-03 20:56:58,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 125 transitions, 1339 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-03 20:56:58,022 INFO L231 Difference]: Finished difference. Result has 124 places, 108 transitions, 1077 flow [2024-06-03 20:56:58,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=1000, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1077, PETRI_PLACES=124, PETRI_TRANSITIONS=108} [2024-06-03 20:56:58,023 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 81 predicate places. [2024-06-03 20:56:58,023 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 108 transitions, 1077 flow [2024-06-03 20:56:58,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 20.9) internal successors, (209), 10 states have internal predecessors, (209), 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) [2024-06-03 20:56:58,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:56:58,023 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, 1, 1] [2024-06-03 20:56:58,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-03 20:56:58,023 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:56:58,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:56:58,024 INFO L85 PathProgramCache]: Analyzing trace with hash -355634307, now seen corresponding path program 2 times [2024-06-03 20:56:58,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:56:58,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322119237] [2024-06-03 20:56:58,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:56:58,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:56:58,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:56:58,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:56:58,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:56:58,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322119237] [2024-06-03 20:56:58,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322119237] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:56:58,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:56:58,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:56:58,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674685213] [2024-06-03 20:56:58,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:56:58,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:56:58,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:56:58,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:56:58,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:56:58,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 66 [2024-06-03 20:56:58,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 108 transitions, 1077 flow. Second operand has 10 states, 10 states have (on average 20.9) internal successors, (209), 10 states have internal predecessors, (209), 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) [2024-06-03 20:56:58,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:56:58,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 66 [2024-06-03 20:56:58,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:56:58,430 INFO L124 PetriNetUnfolderBase]: 407/906 cut-off events. [2024-06-03 20:56:58,430 INFO L125 PetriNetUnfolderBase]: For 18468/18468 co-relation queries the response was YES. [2024-06-03 20:56:58,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5201 conditions, 906 events. 407/906 cut-off events. For 18468/18468 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4855 event pairs, 126 based on Foata normal form. 1/902 useless extension candidates. Maximal degree in co-relation 5141. Up to 703 conditions per place. [2024-06-03 20:56:58,437 INFO L140 encePairwiseOnDemand]: 52/66 looper letters, 98 selfloop transitions, 24 changer transitions 0/130 dead transitions. [2024-06-03 20:56:58,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 130 transitions, 1440 flow [2024-06-03 20:56:58,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:56:58,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:56:58,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 253 transitions. [2024-06-03 20:56:58,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38333333333333336 [2024-06-03 20:56:58,439 INFO L175 Difference]: Start difference. First operand has 124 places, 108 transitions, 1077 flow. Second operand 10 states and 253 transitions. [2024-06-03 20:56:58,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 130 transitions, 1440 flow [2024-06-03 20:56:58,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 130 transitions, 1394 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-03 20:56:58,459 INFO L231 Difference]: Finished difference. Result has 128 places, 111 transitions, 1120 flow [2024-06-03 20:56:58,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=1031, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1120, PETRI_PLACES=128, PETRI_TRANSITIONS=111} [2024-06-03 20:56:58,459 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 85 predicate places. [2024-06-03 20:56:58,459 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 111 transitions, 1120 flow [2024-06-03 20:56:58,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 20.9) internal successors, (209), 10 states have internal predecessors, (209), 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) [2024-06-03 20:56:58,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:56:58,460 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, 1, 1] [2024-06-03 20:56:58,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-03 20:56:58,460 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:56:58,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:56:58,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1538593202, now seen corresponding path program 2 times [2024-06-03 20:56:58,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:56:58,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826322745] [2024-06-03 20:56:58,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:56:58,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:56:58,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:56:58,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:56:58,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:56:58,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826322745] [2024-06-03 20:56:58,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826322745] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:56:58,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:56:58,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 20:56:58,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108302205] [2024-06-03 20:56:58,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:56:58,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 20:56:58,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:56:58,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 20:56:58,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-03 20:56:58,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 66 [2024-06-03 20:56:58,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 111 transitions, 1120 flow. Second operand has 9 states, 9 states have (on average 21.11111111111111) internal successors, (190), 9 states have internal predecessors, (190), 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) [2024-06-03 20:56:58,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:56:58,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 66 [2024-06-03 20:56:58,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:56:58,867 INFO L124 PetriNetUnfolderBase]: 411/914 cut-off events. [2024-06-03 20:56:58,868 INFO L125 PetriNetUnfolderBase]: For 19993/19993 co-relation queries the response was YES. [2024-06-03 20:56:58,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5395 conditions, 914 events. 411/914 cut-off events. For 19993/19993 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 4924 event pairs, 126 based on Foata normal form. 1/910 useless extension candidates. Maximal degree in co-relation 5333. Up to 726 conditions per place. [2024-06-03 20:56:58,874 INFO L140 encePairwiseOnDemand]: 54/66 looper letters, 100 selfloop transitions, 22 changer transitions 0/130 dead transitions. [2024-06-03 20:56:58,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 130 transitions, 1484 flow [2024-06-03 20:56:58,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:56:58,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:56:58,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 229 transitions. [2024-06-03 20:56:58,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38552188552188554 [2024-06-03 20:56:58,876 INFO L175 Difference]: Start difference. First operand has 128 places, 111 transitions, 1120 flow. Second operand 9 states and 229 transitions. [2024-06-03 20:56:58,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 130 transitions, 1484 flow [2024-06-03 20:56:58,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 130 transitions, 1428 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-03 20:56:58,897 INFO L231 Difference]: Finished difference. Result has 132 places, 116 transitions, 1185 flow [2024-06-03 20:56:58,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=1066, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1185, PETRI_PLACES=132, PETRI_TRANSITIONS=116} [2024-06-03 20:56:58,898 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 89 predicate places. [2024-06-03 20:56:58,898 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 116 transitions, 1185 flow [2024-06-03 20:56:58,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 21.11111111111111) internal successors, (190), 9 states have internal predecessors, (190), 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) [2024-06-03 20:56:58,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:56:58,899 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, 1, 1] [2024-06-03 20:56:58,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-03 20:56:58,899 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:56:58,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:56:58,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1557078725, now seen corresponding path program 3 times [2024-06-03 20:56:58,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:56:58,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426141710] [2024-06-03 20:56:58,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:56:58,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:56:58,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:56:59,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:56:59,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:56:59,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426141710] [2024-06-03 20:56:59,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426141710] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:56:59,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:56:59,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:56:59,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471425555] [2024-06-03 20:56:59,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:56:59,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:56:59,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:56:59,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:56:59,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:56:59,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 66 [2024-06-03 20:56:59,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 116 transitions, 1185 flow. Second operand has 10 states, 10 states have (on average 20.9) internal successors, (209), 10 states have internal predecessors, (209), 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) [2024-06-03 20:56:59,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:56:59,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 66 [2024-06-03 20:56:59,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:56:59,343 INFO L124 PetriNetUnfolderBase]: 438/982 cut-off events. [2024-06-03 20:56:59,343 INFO L125 PetriNetUnfolderBase]: For 26542/26542 co-relation queries the response was YES. [2024-06-03 20:56:59,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5733 conditions, 982 events. 438/982 cut-off events. For 26542/26542 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 5382 event pairs, 117 based on Foata normal form. 17/994 useless extension candidates. Maximal degree in co-relation 5668. Up to 587 conditions per place. [2024-06-03 20:56:59,350 INFO L140 encePairwiseOnDemand]: 52/66 looper letters, 92 selfloop transitions, 34 changer transitions 11/145 dead transitions. [2024-06-03 20:56:59,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 145 transitions, 1653 flow [2024-06-03 20:56:59,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:56:59,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:56:59,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 258 transitions. [2024-06-03 20:56:59,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39090909090909093 [2024-06-03 20:56:59,351 INFO L175 Difference]: Start difference. First operand has 132 places, 116 transitions, 1185 flow. Second operand 10 states and 258 transitions. [2024-06-03 20:56:59,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 145 transitions, 1653 flow [2024-06-03 20:56:59,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 145 transitions, 1611 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-03 20:56:59,374 INFO L231 Difference]: Finished difference. Result has 142 places, 115 transitions, 1277 flow [2024-06-03 20:56:59,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=1143, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1277, PETRI_PLACES=142, PETRI_TRANSITIONS=115} [2024-06-03 20:56:59,375 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 99 predicate places. [2024-06-03 20:56:59,375 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 115 transitions, 1277 flow [2024-06-03 20:56:59,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 20.9) internal successors, (209), 10 states have internal predecessors, (209), 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) [2024-06-03 20:56:59,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:56:59,375 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, 1, 1] [2024-06-03 20:56:59,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-03 20:56:59,375 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:56:59,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:56:59,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1205410346, now seen corresponding path program 3 times [2024-06-03 20:56:59,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:56:59,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709256953] [2024-06-03 20:56:59,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:56:59,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:56:59,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:56:59,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:56:59,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:56:59,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709256953] [2024-06-03 20:56:59,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709256953] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:56:59,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:56:59,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-03 20:56:59,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141557892] [2024-06-03 20:56:59,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:56:59,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-03 20:56:59,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:56:59,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-03 20:56:59,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-03 20:56:59,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 66 [2024-06-03 20:56:59,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 115 transitions, 1277 flow. Second operand has 10 states, 10 states have (on average 20.9) internal successors, (209), 10 states have internal predecessors, (209), 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) [2024-06-03 20:56:59,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:56:59,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 66 [2024-06-03 20:56:59,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:56:59,795 INFO L124 PetriNetUnfolderBase]: 400/897 cut-off events. [2024-06-03 20:56:59,795 INFO L125 PetriNetUnfolderBase]: For 26545/26545 co-relation queries the response was YES. [2024-06-03 20:56:59,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5753 conditions, 897 events. 400/897 cut-off events. For 26545/26545 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 4793 event pairs, 108 based on Foata normal form. 1/893 useless extension candidates. Maximal degree in co-relation 5683. Up to 587 conditions per place. [2024-06-03 20:56:59,804 INFO L140 encePairwiseOnDemand]: 54/66 looper letters, 88 selfloop transitions, 41 changer transitions 0/137 dead transitions. [2024-06-03 20:56:59,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 137 transitions, 1693 flow [2024-06-03 20:56:59,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:56:59,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:56:59,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 254 transitions. [2024-06-03 20:56:59,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38484848484848483 [2024-06-03 20:56:59,805 INFO L175 Difference]: Start difference. First operand has 142 places, 115 transitions, 1277 flow. Second operand 10 states and 254 transitions. [2024-06-03 20:56:59,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 137 transitions, 1693 flow [2024-06-03 20:56:59,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 137 transitions, 1565 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-06-03 20:56:59,831 INFO L231 Difference]: Finished difference. Result has 143 places, 120 transitions, 1334 flow [2024-06-03 20:56:59,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=1153, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1334, PETRI_PLACES=143, PETRI_TRANSITIONS=120} [2024-06-03 20:56:59,831 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 100 predicate places. [2024-06-03 20:56:59,832 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 120 transitions, 1334 flow [2024-06-03 20:56:59,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 20.9) internal successors, (209), 10 states have internal predecessors, (209), 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) [2024-06-03 20:56:59,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:56:59,832 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, 1, 1, 1] [2024-06-03 20:56:59,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-03 20:56:59,832 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:56:59,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:56:59,833 INFO L85 PathProgramCache]: Analyzing trace with hash 694862718, now seen corresponding path program 1 times [2024-06-03 20:56:59,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:56:59,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68921812] [2024-06-03 20:56:59,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:56:59,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:56:59,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:56:59,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:56:59,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:56:59,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68921812] [2024-06-03 20:56:59,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68921812] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:56:59,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:56:59,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 20:56:59,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084165016] [2024-06-03 20:56:59,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:56:59,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 20:56:59,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:56:59,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 20:56:59,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-03 20:57:00,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 66 [2024-06-03 20:57:00,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 120 transitions, 1334 flow. Second operand has 9 states, 9 states have (on average 21.22222222222222) internal successors, (191), 9 states have internal predecessors, (191), 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) [2024-06-03 20:57:00,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:57:00,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 66 [2024-06-03 20:57:00,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:57:00,229 INFO L124 PetriNetUnfolderBase]: 469/1040 cut-off events. [2024-06-03 20:57:00,229 INFO L125 PetriNetUnfolderBase]: For 31759/31759 co-relation queries the response was YES. [2024-06-03 20:57:00,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6331 conditions, 1040 events. 469/1040 cut-off events. For 31759/31759 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 5744 event pairs, 104 based on Foata normal form. 21/1058 useless extension candidates. Maximal degree in co-relation 6261. Up to 651 conditions per place. [2024-06-03 20:57:00,237 INFO L140 encePairwiseOnDemand]: 55/66 looper letters, 112 selfloop transitions, 34 changer transitions 16/170 dead transitions. [2024-06-03 20:57:00,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 170 transitions, 2153 flow [2024-06-03 20:57:00,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:57:00,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:57:00,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 278 transitions. [2024-06-03 20:57:00,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4212121212121212 [2024-06-03 20:57:00,239 INFO L175 Difference]: Start difference. First operand has 143 places, 120 transitions, 1334 flow. Second operand 10 states and 278 transitions. [2024-06-03 20:57:00,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 170 transitions, 2153 flow [2024-06-03 20:57:00,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 170 transitions, 2044 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-03 20:57:00,266 INFO L231 Difference]: Finished difference. Result has 150 places, 126 transitions, 1464 flow [2024-06-03 20:57:00,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=1231, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1464, PETRI_PLACES=150, PETRI_TRANSITIONS=126} [2024-06-03 20:57:00,267 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 107 predicate places. [2024-06-03 20:57:00,267 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 126 transitions, 1464 flow [2024-06-03 20:57:00,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 21.22222222222222) internal successors, (191), 9 states have internal predecessors, (191), 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) [2024-06-03 20:57:00,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:57:00,267 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, 1, 1, 1] [2024-06-03 20:57:00,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-03 20:57:00,267 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:57:00,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:57:00,268 INFO L85 PathProgramCache]: Analyzing trace with hash 426895142, now seen corresponding path program 1 times [2024-06-03 20:57:00,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:57:00,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274617051] [2024-06-03 20:57:00,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:57:00,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:57:00,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:57:00,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:57:00,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:57:00,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274617051] [2024-06-03 20:57:00,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274617051] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:57:00,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:57:00,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 20:57:00,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964655838] [2024-06-03 20:57:00,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:57:00,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 20:57:00,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:57:00,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 20:57:00,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-03 20:57:00,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 66 [2024-06-03 20:57:00,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 126 transitions, 1464 flow. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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) [2024-06-03 20:57:00,433 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:57:00,433 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 66 [2024-06-03 20:57:00,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:57:00,631 INFO L124 PetriNetUnfolderBase]: 440/988 cut-off events. [2024-06-03 20:57:00,632 INFO L125 PetriNetUnfolderBase]: For 28869/28869 co-relation queries the response was YES. [2024-06-03 20:57:00,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6391 conditions, 988 events. 440/988 cut-off events. For 28869/28869 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 5413 event pairs, 112 based on Foata normal form. 2/985 useless extension candidates. Maximal degree in co-relation 6316. Up to 722 conditions per place. [2024-06-03 20:57:00,676 INFO L140 encePairwiseOnDemand]: 55/66 looper letters, 117 selfloop transitions, 22 changer transitions 9/156 dead transitions. [2024-06-03 20:57:00,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 156 transitions, 2047 flow [2024-06-03 20:57:00,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:57:00,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:57:00,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 241 transitions. [2024-06-03 20:57:00,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4057239057239057 [2024-06-03 20:57:00,678 INFO L175 Difference]: Start difference. First operand has 150 places, 126 transitions, 1464 flow. Second operand 9 states and 241 transitions. [2024-06-03 20:57:00,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 156 transitions, 2047 flow [2024-06-03 20:57:00,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 156 transitions, 1918 flow, removed 37 selfloop flow, removed 9 redundant places. [2024-06-03 20:57:00,705 INFO L231 Difference]: Finished difference. Result has 151 places, 128 transitions, 1453 flow [2024-06-03 20:57:00,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=1345, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1453, PETRI_PLACES=151, PETRI_TRANSITIONS=128} [2024-06-03 20:57:00,706 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 108 predicate places. [2024-06-03 20:57:00,706 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 128 transitions, 1453 flow [2024-06-03 20:57:00,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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) [2024-06-03 20:57:00,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:57:00,706 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, 1, 1, 1] [2024-06-03 20:57:00,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-03 20:57:00,706 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:57:00,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:57:00,707 INFO L85 PathProgramCache]: Analyzing trace with hash 2078829758, now seen corresponding path program 2 times [2024-06-03 20:57:00,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:57:00,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724089790] [2024-06-03 20:57:00,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:57:00,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:57:00,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:57:00,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:57:00,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:57:00,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724089790] [2024-06-03 20:57:00,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724089790] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:57:00,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:57:00,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 20:57:00,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685016717] [2024-06-03 20:57:00,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:57:00,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 20:57:00,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:57:00,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 20:57:00,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-03 20:57:00,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 66 [2024-06-03 20:57:00,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 128 transitions, 1453 flow. Second operand has 9 states, 9 states have (on average 21.22222222222222) internal successors, (191), 9 states have internal predecessors, (191), 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) [2024-06-03 20:57:00,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:57:00,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 66 [2024-06-03 20:57:00,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:57:01,140 INFO L124 PetriNetUnfolderBase]: 442/997 cut-off events. [2024-06-03 20:57:01,140 INFO L125 PetriNetUnfolderBase]: For 33299/33299 co-relation queries the response was YES. [2024-06-03 20:57:01,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6216 conditions, 997 events. 442/997 cut-off events. For 33299/33299 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 5499 event pairs, 110 based on Foata normal form. 19/1011 useless extension candidates. Maximal degree in co-relation 6142. Up to 654 conditions per place. [2024-06-03 20:57:01,147 INFO L140 encePairwiseOnDemand]: 55/66 looper letters, 113 selfloop transitions, 34 changer transitions 12/167 dead transitions. [2024-06-03 20:57:01,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 167 transitions, 2158 flow [2024-06-03 20:57:01,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 20:57:01,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 20:57:01,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 274 transitions. [2024-06-03 20:57:01,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41515151515151516 [2024-06-03 20:57:01,148 INFO L175 Difference]: Start difference. First operand has 151 places, 128 transitions, 1453 flow. Second operand 10 states and 274 transitions. [2024-06-03 20:57:01,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 167 transitions, 2158 flow [2024-06-03 20:57:01,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 167 transitions, 2082 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-03 20:57:01,177 INFO L231 Difference]: Finished difference. Result has 156 places, 131 transitions, 1558 flow [2024-06-03 20:57:01,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=1383, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1558, PETRI_PLACES=156, PETRI_TRANSITIONS=131} [2024-06-03 20:57:01,177 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 113 predicate places. [2024-06-03 20:57:01,177 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 131 transitions, 1558 flow [2024-06-03 20:57:01,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 21.22222222222222) internal successors, (191), 9 states have internal predecessors, (191), 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) [2024-06-03 20:57:01,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:57:01,178 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, 1, 1, 1] [2024-06-03 20:57:01,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-03 20:57:01,178 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:57:01,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:57:01,178 INFO L85 PathProgramCache]: Analyzing trace with hash -331109726, now seen corresponding path program 3 times [2024-06-03 20:57:01,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:57:01,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784783524] [2024-06-03 20:57:01,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:57:01,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:57:01,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:57:01,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:57:01,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:57:01,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784783524] [2024-06-03 20:57:01,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784783524] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:57:01,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:57:01,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-03 20:57:01,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134801767] [2024-06-03 20:57:01,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:57:01,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-03 20:57:01,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:57:01,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-03 20:57:01,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-03 20:57:01,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 66 [2024-06-03 20:57:01,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 131 transitions, 1558 flow. Second operand has 9 states, 9 states have (on average 21.22222222222222) internal successors, (191), 9 states have internal predecessors, (191), 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) [2024-06-03 20:57:01,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:57:01,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 66 [2024-06-03 20:57:01,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:57:01,589 INFO L124 PetriNetUnfolderBase]: 417/957 cut-off events. [2024-06-03 20:57:01,591 INFO L125 PetriNetUnfolderBase]: For 36047/36047 co-relation queries the response was YES. [2024-06-03 20:57:01,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6102 conditions, 957 events. 417/957 cut-off events. For 36047/36047 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 5216 event pairs, 105 based on Foata normal form. 14/966 useless extension candidates. Maximal degree in co-relation 6024. Up to 578 conditions per place. [2024-06-03 20:57:01,598 INFO L140 encePairwiseOnDemand]: 56/66 looper letters, 106 selfloop transitions, 35 changer transitions 9/158 dead transitions. [2024-06-03 20:57:01,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 158 transitions, 2106 flow [2024-06-03 20:57:01,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:57:01,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:57:01,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 238 transitions. [2024-06-03 20:57:01,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4006734006734007 [2024-06-03 20:57:01,600 INFO L175 Difference]: Start difference. First operand has 156 places, 131 transitions, 1558 flow. Second operand 9 states and 238 transitions. [2024-06-03 20:57:01,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 158 transitions, 2106 flow [2024-06-03 20:57:01,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 158 transitions, 1985 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-03 20:57:01,634 INFO L231 Difference]: Finished difference. Result has 157 places, 132 transitions, 1550 flow [2024-06-03 20:57:01,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=1447, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1550, PETRI_PLACES=157, PETRI_TRANSITIONS=132} [2024-06-03 20:57:01,635 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 114 predicate places. [2024-06-03 20:57:01,635 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 132 transitions, 1550 flow [2024-06-03 20:57:01,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 21.22222222222222) internal successors, (191), 9 states have internal predecessors, (191), 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) [2024-06-03 20:57:01,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:57:01,635 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, 1, 1, 1] [2024-06-03 20:57:01,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-03 20:57:01,636 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:57:01,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:57:01,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1344311742, now seen corresponding path program 4 times [2024-06-03 20:57:01,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:57:01,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933465422] [2024-06-03 20:57:01,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:57:01,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:57:01,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:57:01,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:57:01,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:57:01,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933465422] [2024-06-03 20:57:01,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933465422] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:57:01,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:57:01,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 20:57:01,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774329658] [2024-06-03 20:57:01,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:57:01,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 20:57:01,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:57:01,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 20:57:01,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-03 20:57:01,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 66 [2024-06-03 20:57:01,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 132 transitions, 1550 flow. Second operand has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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) [2024-06-03 20:57:01,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:57:01,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 66 [2024-06-03 20:57:01,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:57:01,976 INFO L124 PetriNetUnfolderBase]: 368/854 cut-off events. [2024-06-03 20:57:01,976 INFO L125 PetriNetUnfolderBase]: For 26163/26163 co-relation queries the response was YES. [2024-06-03 20:57:01,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5068 conditions, 854 events. 368/854 cut-off events. For 26163/26163 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4525 event pairs, 66 based on Foata normal form. 12/863 useless extension candidates. Maximal degree in co-relation 4990. Up to 351 conditions per place. [2024-06-03 20:57:01,982 INFO L140 encePairwiseOnDemand]: 57/66 looper letters, 85 selfloop transitions, 17 changer transitions 52/162 dead transitions. [2024-06-03 20:57:01,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 162 transitions, 2037 flow [2024-06-03 20:57:01,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:57:01,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:57:01,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 241 transitions. [2024-06-03 20:57:01,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4057239057239057 [2024-06-03 20:57:01,984 INFO L175 Difference]: Start difference. First operand has 157 places, 132 transitions, 1550 flow. Second operand 9 states and 241 transitions. [2024-06-03 20:57:01,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 162 transitions, 2037 flow [2024-06-03 20:57:02,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 162 transitions, 1890 flow, removed 39 selfloop flow, removed 8 redundant places. [2024-06-03 20:57:02,013 INFO L231 Difference]: Finished difference. Result has 159 places, 97 transitions, 993 flow [2024-06-03 20:57:02,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=1405, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=993, PETRI_PLACES=159, PETRI_TRANSITIONS=97} [2024-06-03 20:57:02,013 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 116 predicate places. [2024-06-03 20:57:02,013 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 97 transitions, 993 flow [2024-06-03 20:57:02,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.5) internal successors, (172), 8 states have internal predecessors, (172), 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) [2024-06-03 20:57:02,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:57:02,014 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, 1, 1, 1, 1, 1] [2024-06-03 20:57:02,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-03 20:57:02,014 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:57:02,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:57:02,014 INFO L85 PathProgramCache]: Analyzing trace with hash -728421581, now seen corresponding path program 1 times [2024-06-03 20:57:02,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:57:02,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618189723] [2024-06-03 20:57:02,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:57:02,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:57:02,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:57:02,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:57:02,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:57:02,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618189723] [2024-06-03 20:57:02,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618189723] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:57:02,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:57:02,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 20:57:02,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563229181] [2024-06-03 20:57:02,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:57:02,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 20:57:02,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:57:02,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 20:57:02,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-03 20:57:02,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 66 [2024-06-03 20:57:02,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 97 transitions, 993 flow. Second operand has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 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) [2024-06-03 20:57:02,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:57:02,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 66 [2024-06-03 20:57:02,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:57:02,304 INFO L124 PetriNetUnfolderBase]: 252/620 cut-off events. [2024-06-03 20:57:02,305 INFO L125 PetriNetUnfolderBase]: For 25376/25376 co-relation queries the response was YES. [2024-06-03 20:57:02,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3860 conditions, 620 events. 252/620 cut-off events. For 25376/25376 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2968 event pairs, 62 based on Foata normal form. 16/633 useless extension candidates. Maximal degree in co-relation 3787. Up to 352 conditions per place. [2024-06-03 20:57:02,309 INFO L140 encePairwiseOnDemand]: 57/66 looper letters, 77 selfloop transitions, 15 changer transitions 20/120 dead transitions. [2024-06-03 20:57:02,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 120 transitions, 1363 flow [2024-06-03 20:57:02,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 20:57:02,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 20:57:02,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 215 transitions. [2024-06-03 20:57:02,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4071969696969697 [2024-06-03 20:57:02,311 INFO L175 Difference]: Start difference. First operand has 159 places, 97 transitions, 993 flow. Second operand 8 states and 215 transitions. [2024-06-03 20:57:02,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 120 transitions, 1363 flow [2024-06-03 20:57:02,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 120 transitions, 1161 flow, removed 31 selfloop flow, removed 32 redundant places. [2024-06-03 20:57:02,332 INFO L231 Difference]: Finished difference. Result has 133 places, 89 transitions, 788 flow [2024-06-03 20:57:02,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=803, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=788, PETRI_PLACES=133, PETRI_TRANSITIONS=89} [2024-06-03 20:57:02,336 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 90 predicate places. [2024-06-03 20:57:02,336 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 89 transitions, 788 flow [2024-06-03 20:57:02,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 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) [2024-06-03 20:57:02,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:57:02,337 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, 1, 1, 1, 1, 1] [2024-06-03 20:57:02,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-03 20:57:02,337 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:57:02,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:57:02,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1124081029, now seen corresponding path program 1 times [2024-06-03 20:57:02,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:57:02,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865991496] [2024-06-03 20:57:02,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:57:02,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:57:02,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:57:02,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:57:02,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:57:02,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865991496] [2024-06-03 20:57:02,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865991496] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:57:02,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:57:02,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 20:57:02,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385338889] [2024-06-03 20:57:02,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:57:02,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 20:57:02,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:57:02,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 20:57:02,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-03 20:57:02,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 66 [2024-06-03 20:57:02,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 89 transitions, 788 flow. Second operand has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 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) [2024-06-03 20:57:02,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:57:02,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 66 [2024-06-03 20:57:02,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:57:02,586 INFO L124 PetriNetUnfolderBase]: 194/499 cut-off events. [2024-06-03 20:57:02,586 INFO L125 PetriNetUnfolderBase]: For 14032/14032 co-relation queries the response was YES. [2024-06-03 20:57:02,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2575 conditions, 499 events. 194/499 cut-off events. For 14032/14032 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2250 event pairs, 50 based on Foata normal form. 16/510 useless extension candidates. Maximal degree in co-relation 2511. Up to 119 conditions per place. [2024-06-03 20:57:02,589 INFO L140 encePairwiseOnDemand]: 58/66 looper letters, 36 selfloop transitions, 19 changer transitions 41/104 dead transitions. [2024-06-03 20:57:02,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 104 transitions, 1052 flow [2024-06-03 20:57:02,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 20:57:02,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 20:57:02,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 190 transitions. [2024-06-03 20:57:02,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41125541125541126 [2024-06-03 20:57:02,590 INFO L175 Difference]: Start difference. First operand has 133 places, 89 transitions, 788 flow. Second operand 7 states and 190 transitions. [2024-06-03 20:57:02,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 104 transitions, 1052 flow [2024-06-03 20:57:02,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 104 transitions, 978 flow, removed 15 selfloop flow, removed 14 redundant places. [2024-06-03 20:57:02,603 INFO L231 Difference]: Finished difference. Result has 127 places, 57 transitions, 495 flow [2024-06-03 20:57:02,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=714, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=495, PETRI_PLACES=127, PETRI_TRANSITIONS=57} [2024-06-03 20:57:02,605 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 84 predicate places. [2024-06-03 20:57:02,605 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 57 transitions, 495 flow [2024-06-03 20:57:02,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.0) internal successors, (154), 7 states have internal predecessors, (154), 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) [2024-06-03 20:57:02,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:57:02,607 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, 1, 1, 1, 1, 1] [2024-06-03 20:57:02,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-03 20:57:02,607 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:57:02,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:57:02,607 INFO L85 PathProgramCache]: Analyzing trace with hash 221305591, now seen corresponding path program 2 times [2024-06-03 20:57:02,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:57:02,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978946402] [2024-06-03 20:57:02,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:57:02,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:57:02,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:57:02,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:57:02,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:57:02,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978946402] [2024-06-03 20:57:02,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978946402] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:57:02,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:57:02,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 20:57:02,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109380860] [2024-06-03 20:57:02,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:57:02,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 20:57:02,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:57:02,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 20:57:02,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-03 20:57:02,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 66 [2024-06-03 20:57:02,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 57 transitions, 495 flow. Second operand has 8 states, 8 states have (on average 21.625) internal successors, (173), 8 states have internal predecessors, (173), 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) [2024-06-03 20:57:02,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:57:02,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 66 [2024-06-03 20:57:02,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:57:02,839 INFO L124 PetriNetUnfolderBase]: 139/359 cut-off events. [2024-06-03 20:57:02,839 INFO L125 PetriNetUnfolderBase]: For 12518/12518 co-relation queries the response was YES. [2024-06-03 20:57:02,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1942 conditions, 359 events. 139/359 cut-off events. For 12518/12518 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1380 event pairs, 38 based on Foata normal form. 16/372 useless extension candidates. Maximal degree in co-relation 1883. Up to 138 conditions per place. [2024-06-03 20:57:02,841 INFO L140 encePairwiseOnDemand]: 57/66 looper letters, 27 selfloop transitions, 3 changer transitions 42/80 dead transitions. [2024-06-03 20:57:02,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 80 transitions, 763 flow [2024-06-03 20:57:02,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 20:57:02,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 20:57:02,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 232 transitions. [2024-06-03 20:57:02,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39057239057239057 [2024-06-03 20:57:02,849 INFO L175 Difference]: Start difference. First operand has 127 places, 57 transitions, 495 flow. Second operand 9 states and 232 transitions. [2024-06-03 20:57:02,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 80 transitions, 763 flow [2024-06-03 20:57:02,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 80 transitions, 580 flow, removed 36 selfloop flow, removed 33 redundant places. [2024-06-03 20:57:02,855 INFO L231 Difference]: Finished difference. Result has 95 places, 37 transitions, 216 flow [2024-06-03 20:57:02,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=216, PETRI_PLACES=95, PETRI_TRANSITIONS=37} [2024-06-03 20:57:02,856 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 52 predicate places. [2024-06-03 20:57:02,856 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 37 transitions, 216 flow [2024-06-03 20:57:02,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.625) internal successors, (173), 8 states have internal predecessors, (173), 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) [2024-06-03 20:57:02,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:57:02,857 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, 1, 1, 1, 1, 1] [2024-06-03 20:57:02,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-03 20:57:02,857 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 20:57:02,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:57:02,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1914513851, now seen corresponding path program 3 times [2024-06-03 20:57:02,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:57:02,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140162826] [2024-06-03 20:57:02,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:57:02,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:57:02,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:57:02,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:57:02,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:57:02,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140162826] [2024-06-03 20:57:02,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140162826] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:57:02,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:57:02,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 20:57:02,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772803996] [2024-06-03 20:57:02,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:57:02,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 20:57:02,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:57:02,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 20:57:02,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-03 20:57:03,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 66 [2024-06-03 20:57:03,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 37 transitions, 216 flow. Second operand has 8 states, 8 states have (on average 21.625) internal successors, (173), 8 states have internal predecessors, (173), 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) [2024-06-03 20:57:03,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:57:03,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 66 [2024-06-03 20:57:03,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:57:03,107 INFO L124 PetriNetUnfolderBase]: 47/130 cut-off events. [2024-06-03 20:57:03,108 INFO L125 PetriNetUnfolderBase]: For 2233/2233 co-relation queries the response was YES. [2024-06-03 20:57:03,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 462 conditions, 130 events. 47/130 cut-off events. For 2233/2233 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 261 event pairs, 4 based on Foata normal form. 16/144 useless extension candidates. Maximal degree in co-relation 434. Up to 45 conditions per place. [2024-06-03 20:57:03,108 INFO L140 encePairwiseOnDemand]: 58/66 looper letters, 0 selfloop transitions, 0 changer transitions 43/43 dead transitions. [2024-06-03 20:57:03,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 43 transitions, 266 flow [2024-06-03 20:57:03,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 20:57:03,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 20:57:03,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2024-06-03 20:57:03,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-03 20:57:03,109 INFO L175 Difference]: Start difference. First operand has 95 places, 37 transitions, 216 flow. Second operand 8 states and 187 transitions. [2024-06-03 20:57:03,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 43 transitions, 266 flow [2024-06-03 20:57:03,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 43 transitions, 197 flow, removed 21 selfloop flow, removed 27 redundant places. [2024-06-03 20:57:03,111 INFO L231 Difference]: Finished difference. Result has 54 places, 0 transitions, 0 flow [2024-06-03 20:57:03,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=54, PETRI_TRANSITIONS=0} [2024-06-03 20:57:03,111 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 11 predicate places. [2024-06-03 20:57:03,111 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 0 transitions, 0 flow [2024-06-03 20:57:03,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.625) internal successors, (173), 8 states have internal predecessors, (173), 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) [2024-06-03 20:57:03,113 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-03 20:57:03,114 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-03 20:57:03,114 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-03 20:57:03,114 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-03 20:57:03,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-03 20:57:03,114 INFO L445 BasicCegarLoop]: Path program histogram: [6, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-06-03 20:57:03,117 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-03 20:57:03,117 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-03 20:57:03,119 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-03 20:57:03,119 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-03 20:57:03,120 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.06 08:57:03 BasicIcfg [2024-06-03 20:57:03,120 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-03 20:57:03,121 INFO L158 Benchmark]: Toolchain (without parser) took 14228.22ms. Allocated memory was 169.9MB in the beginning and 501.2MB in the end (delta: 331.4MB). Free memory was 107.9MB in the beginning and 389.8MB in the end (delta: -282.0MB). Peak memory consumption was 50.8MB. Max. memory is 16.1GB. [2024-06-03 20:57:03,121 INFO L158 Benchmark]: Witness Parser took 0.16ms. Allocated memory is still 169.9MB. Free memory is still 136.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-03 20:57:03,121 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 169.9MB. Free memory is still 130.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-03 20:57:03,121 INFO L158 Benchmark]: CACSL2BoogieTranslator took 426.56ms. Allocated memory is still 169.9MB. Free memory was 107.9MB in the beginning and 76.4MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2024-06-03 20:57:03,121 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.09ms. Allocated memory is still 169.9MB. Free memory was 76.1MB in the beginning and 74.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-03 20:57:03,121 INFO L158 Benchmark]: Boogie Preprocessor took 33.84ms. Allocated memory is still 169.9MB. Free memory was 74.0MB in the beginning and 71.2MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-03 20:57:03,122 INFO L158 Benchmark]: RCFGBuilder took 586.09ms. Allocated memory was 169.9MB in the beginning and 213.9MB in the end (delta: 44.0MB). Free memory was 71.2MB in the beginning and 144.7MB in the end (delta: -73.5MB). Peak memory consumption was 26.4MB. Max. memory is 16.1GB. [2024-06-03 20:57:03,122 INFO L158 Benchmark]: TraceAbstraction took 13135.62ms. Allocated memory was 213.9MB in the beginning and 501.2MB in the end (delta: 287.3MB). Free memory was 143.7MB in the beginning and 389.8MB in the end (delta: -246.1MB). Peak memory consumption was 41.2MB. Max. memory is 16.1GB. [2024-06-03 20:57:03,123 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.16ms. Allocated memory is still 169.9MB. Free memory is still 136.6MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.13ms. Allocated memory is still 169.9MB. Free memory is still 130.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 426.56ms. Allocated memory is still 169.9MB. Free memory was 107.9MB in the beginning and 76.4MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.09ms. Allocated memory is still 169.9MB. Free memory was 76.1MB in the beginning and 74.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.84ms. Allocated memory is still 169.9MB. Free memory was 74.0MB in the beginning and 71.2MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 586.09ms. Allocated memory was 169.9MB in the beginning and 213.9MB in the end (delta: 44.0MB). Free memory was 71.2MB in the beginning and 144.7MB in the end (delta: -73.5MB). Peak memory consumption was 26.4MB. Max. memory is 16.1GB. * TraceAbstraction took 13135.62ms. Allocated memory was 213.9MB in the beginning and 501.2MB in the end (delta: 287.3MB). Free memory was 143.7MB in the beginning and 389.8MB in the end (delta: -246.1MB). Peak memory consumption was 41.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 711]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 712]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 97 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 13.0s, OverallIterations: 31, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 7.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1162 SdHoareTripleChecker+Valid, 3.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1082 mSDsluCounter, 24 SdHoareTripleChecker+Invalid, 2.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 200 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8673 IncrementalHoareTripleChecker+Invalid, 8873 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 200 mSolverCounterUnsat, 24 mSDtfsCounter, 8673 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 218 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1558occurred in iteration=25, InterpolantAutomatonStates: 261, 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: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 4.7s InterpolantComputationTime, 683 NumberOfCodeBlocks, 683 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 652 ConstructedInterpolants, 0 QuantifiedInterpolants, 7570 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 31 InterpolantComputations, 31 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-03 20:57:03,146 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