./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 [2024-06-04 16:22:32,644 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-04 16:22:32,704 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-04 16:22:32,710 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-04 16:22:32,710 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-04 16:22:32,758 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-04 16:22:32,759 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-04 16:22:32,759 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-04 16:22:32,760 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-04 16:22:32,763 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-04 16:22:32,763 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-04 16:22:32,764 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-04 16:22:32,764 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-04 16:22:32,765 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-04 16:22:32,766 INFO L153 SettingsManager]: * Use SBE=true [2024-06-04 16:22:32,766 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-04 16:22:32,766 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-04 16:22:32,766 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-04 16:22:32,766 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-04 16:22:32,767 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-04 16:22:32,768 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-04 16:22:32,768 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-04 16:22:32,768 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-04 16:22:32,768 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-04 16:22:32,769 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-04 16:22:32,769 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-04 16:22:32,769 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-04 16:22:32,769 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-04 16:22:32,770 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-04 16:22:32,770 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-04 16:22:32,771 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-04 16:22:32,771 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-04 16:22:32,771 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 16:22:32,771 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-04 16:22:32,771 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-04 16:22:32,771 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-04 16:22:32,772 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-04 16:22:32,772 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-04 16:22:32,772 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-04 16:22:32,772 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-04 16:22:32,772 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-04 16:22:32,772 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-04 16:22:32,773 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-04 16:22:32,773 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-04 16:22:32,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-04 16:22:32,998 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-04 16:22:33,000 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-04 16:22:33,001 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-04 16:22:33,002 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-04 16:22:33,003 INFO L431 ainManager$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 [2024-06-04 16:22:33,142 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-04 16:22:33,143 INFO L274 PluginConnector]: CDTParser initialized [2024-06-04 16:22:33,143 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i [2024-06-04 16:22:34,153 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-04 16:22:34,325 INFO L384 CDTParser]: Found 1 translation units. [2024-06-04 16:22:34,325 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i [2024-06-04 16:22:34,335 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b15df7c4f/7e89eeb655c24572b1a510a1b9009f62/FLAGb0520ef79 [2024-06-04 16:22:34,351 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b15df7c4f/7e89eeb655c24572b1a510a1b9009f62 [2024-06-04 16:22:34,351 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-04 16:22:34,352 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-04 16:22:34,353 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-04 16:22:34,353 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-04 16:22:34,357 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-04 16:22:34,357 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 04:22:33" (1/2) ... [2024-06-04 16:22:34,358 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cecbbc7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:22:34, skipping insertion in model container [2024-06-04 16:22:34,358 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 04:22:33" (1/2) ... [2024-06-04 16:22:34,359 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1ce2fa1d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:22:34, skipping insertion in model container [2024-06-04 16:22:34,359 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 04:22:34" (2/2) ... [2024-06-04 16:22:34,359 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cecbbc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 04:22:34, skipping insertion in model container [2024-06-04 16:22:34,359 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 04:22:34" (2/2) ... [2024-06-04 16:22:34,360 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-04 16:22:34,432 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-04 16:22:34,433 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))) [2024-06-04 16:22:34,433 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))) [2024-06-04 16:22:34,433 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-04 16:22:34,434 INFO L103 edCorrectnessWitness]: ghost_variable __global_lock_locked = 0 [2024-06-04 16:22:34,434 INFO L103 edCorrectnessWitness]: ghost_variable mutex1_locked = 0 [2024-06-04 16:22:34,434 INFO L103 edCorrectnessWitness]: ghost_variable mutex2_locked = 0 [2024-06-04 16:22:34,435 INFO L106 edCorrectnessWitness]: ghost_update [L703-L703] __global_lock_locked = 0; [2024-06-04 16:22:34,435 INFO L106 edCorrectnessWitness]: ghost_update [L697-L697] mutex2_locked = 1; [2024-06-04 16:22:34,435 INFO L106 edCorrectnessWitness]: ghost_update [L727-L727] mutex1_locked = 0; [2024-06-04 16:22:34,435 INFO L106 edCorrectnessWitness]: ghost_update [L690-L690] __global_lock_locked = 1; [2024-06-04 16:22:34,435 INFO L106 edCorrectnessWitness]: ghost_update [L687-L687] __global_lock_locked = 1; [2024-06-04 16:22:34,435 INFO L106 edCorrectnessWitness]: ghost_update [L726-L726] __global_lock_locked = 0; [2024-06-04 16:22:34,435 INFO L106 edCorrectnessWitness]: ghost_update [L713-L713] __global_lock_locked = 1; [2024-06-04 16:22:34,436 INFO L106 edCorrectnessWitness]: ghost_update [L704-L704] mutex2_locked = 0; [2024-06-04 16:22:34,436 INFO L106 edCorrectnessWitness]: ghost_update [L692-L692] __global_lock_locked = 0; [2024-06-04 16:22:34,436 INFO L106 edCorrectnessWitness]: ghost_update [L710-L710] multithreaded = 1; [2024-06-04 16:22:34,436 INFO L106 edCorrectnessWitness]: ghost_update [L712-L712] mutex1_locked = 1; [2024-06-04 16:22:34,436 INFO L106 edCorrectnessWitness]: ghost_update [L719-L719] __global_lock_locked = 0; [2024-06-04 16:22:34,436 INFO L106 edCorrectnessWitness]: ghost_update [L717-L717] __global_lock_locked = 1; [2024-06-04 16:22:34,436 INFO L106 edCorrectnessWitness]: ghost_update [L701-L701] __global_lock_locked = 1; [2024-06-04 16:22:34,437 INFO L106 edCorrectnessWitness]: ghost_update [L693-L693] mutex1_locked = 0; [2024-06-04 16:22:34,437 INFO L106 edCorrectnessWitness]: ghost_update [L720-L720] __global_lock_locked = 1; [2024-06-04 16:22:34,437 INFO L106 edCorrectnessWitness]: ghost_update [L715-L715] __global_lock_locked = 0; [2024-06-04 16:22:34,437 INFO L106 edCorrectnessWitness]: ghost_update [L698-L698] __global_lock_locked = 1; [2024-06-04 16:22:34,437 INFO L106 edCorrectnessWitness]: ghost_update [L689-L689] __global_lock_locked = 0; [2024-06-04 16:22:34,437 INFO L106 edCorrectnessWitness]: ghost_update [L722-L722] __global_lock_locked = 0; [2024-06-04 16:22:34,438 INFO L106 edCorrectnessWitness]: ghost_update [L723-L723] mutex2_locked = 0; [2024-06-04 16:22:34,438 INFO L106 edCorrectnessWitness]: ghost_update [L686-L686] mutex1_locked = 1; [2024-06-04 16:22:34,438 INFO L106 edCorrectnessWitness]: ghost_update [L724-L724] __global_lock_locked = 1; [2024-06-04 16:22:34,438 INFO L106 edCorrectnessWitness]: ghost_update [L716-L716] mutex2_locked = 1; [2024-06-04 16:22:34,438 INFO L106 edCorrectnessWitness]: ghost_update [L700-L700] __global_lock_locked = 0; [2024-06-04 16:22:34,470 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-04 16:22:34,749 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 16:22:34,760 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 [2024-06-04 16:22:34,855 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 16:22:34,893 INFO L206 MainTranslator]: Completed translation [2024-06-04 16:22:34,894 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 04:22:34 WrapperNode [2024-06-04 16:22:34,895 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-04 16:22:34,897 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-04 16:22:34,897 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-04 16:22:34,897 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-04 16:22:34,902 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 04:22:34" (1/1) ... [2024-06-04 16:22:34,915 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 04:22:34" (1/1) ... [2024-06-04 16:22:34,997 INFO L138 Inliner]: procedures = 163, calls = 55, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 137 [2024-06-04 16:22:34,998 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-04 16:22:34,999 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-04 16:22:35,000 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-04 16:22:35,003 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-04 16:22:35,011 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 04:22:34" (1/1) ... [2024-06-04 16:22:35,012 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 04:22:34" (1/1) ... [2024-06-04 16:22:35,024 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 04:22:34" (1/1) ... [2024-06-04 16:22:35,038 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]. [2024-06-04 16:22:35,046 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 04:22:34" (1/1) ... [2024-06-04 16:22:35,046 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 04:22:34" (1/1) ... [2024-06-04 16:22:35,050 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 04:22:34" (1/1) ... [2024-06-04 16:22:35,069 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 04:22:34" (1/1) ... [2024-06-04 16:22:35,080 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 04:22:34" (1/1) ... [2024-06-04 16:22:35,081 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 04:22:34" (1/1) ... [2024-06-04 16:22:35,084 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-04 16:22:35,084 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-04 16:22:35,084 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-04 16:22:35,085 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-04 16:22:35,085 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 04:22:34" (1/1) ... [2024-06-04 16:22:35,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 16:22:35,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-04 16:22:35,119 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) [2024-06-04 16:22:35,131 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 [2024-06-04 16:22:35,153 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-06-04 16:22:35,153 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-06-04 16:22:35,153 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-06-04 16:22:35,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-04 16:22:35,154 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-06-04 16:22:35,154 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-06-04 16:22:35,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-04 16:22:35,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-04 16:22:35,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-06-04 16:22:35,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-06-04 16:22:35,158 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-06-04 16:22:35,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-04 16:22:35,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-04 16:22:35,159 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-04 16:22:35,249 INFO L244 CfgBuilder]: Building ICFG [2024-06-04 16:22:35,251 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-04 16:22:35,515 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-04 16:22:35,515 INFO L293 CfgBuilder]: Performing block encoding [2024-06-04 16:22:35,655 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-04 16:22:35,656 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-04 16:22:35,656 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 04:22:35 BoogieIcfgContainer [2024-06-04 16:22:35,656 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-04 16:22:35,657 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-04 16:22:35,657 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-04 16:22:35,659 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-04 16:22:35,660 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 04:22:33" (1/4) ... [2024-06-04 16:22:35,660 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e3afb2b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 04:22:35, skipping insertion in model container [2024-06-04 16:22:35,660 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.06 04:22:34" (2/4) ... [2024-06-04 16:22:35,660 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e3afb2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 04:22:35, skipping insertion in model container [2024-06-04 16:22:35,661 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 04:22:34" (3/4) ... [2024-06-04 16:22:35,661 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e3afb2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 04:22:35, skipping insertion in model container [2024-06-04 16:22:35,661 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 04:22:35" (4/4) ... [2024-06-04 16:22:35,662 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_27-multiple-protecting2_true.i [2024-06-04 16:22:35,673 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-04 16:22:35,674 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-04 16:22:35,674 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-04 16:22:35,710 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-06-04 16:22:35,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 66 transitions, 146 flow [2024-06-04 16:22:35,773 INFO L124 PetriNetUnfolderBase]: 0/64 cut-off events. [2024-06-04 16:22:35,773 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-06-04 16:22:35,775 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. [2024-06-04 16:22:35,775 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 66 transitions, 146 flow [2024-06-04 16:22:35,779 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 36 transitions, 78 flow [2024-06-04 16:22:35,786 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-04 16:22:35,792 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;@f5b044, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-04 16:22:35,792 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-04 16:22:35,798 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-04 16:22:35,802 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-06-04 16:22:35,806 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 16:22:35,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:22:35,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-04 16:22:35,807 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)] === [2024-06-04 16:22:35,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:22:35,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1407902652, now seen corresponding path program 1 times [2024-06-04 16:22:35,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:22:35,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525457588] [2024-06-04 16:22:35,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:22:35,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:22:35,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:22:36,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:22:36,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:22:36,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525457588] [2024-06-04 16:22:36,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525457588] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:22:36,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:22:36,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-04 16:22:36,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950715799] [2024-06-04 16:22:36,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:22:36,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-04 16:22:36,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:22:36,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-04 16:22:36,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-04 16:22:36,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 66 [2024-06-04 16:22:36,187 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) [2024-06-04 16:22:36,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:22:36,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 66 [2024-06-04 16:22:36,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:22:36,386 INFO L124 PetriNetUnfolderBase]: 456/868 cut-off events. [2024-06-04 16:22:36,386 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-06-04 16:22:36,392 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. [2024-06-04 16:22:36,397 INFO L140 encePairwiseOnDemand]: 61/66 looper letters, 35 selfloop transitions, 3 changer transitions 0/46 dead transitions. [2024-06-04 16:22:36,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 46 transitions, 177 flow [2024-06-04 16:22:36,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-04 16:22:36,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-04 16:22:36,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2024-06-04 16:22:36,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4898989898989899 [2024-06-04 16:22:36,408 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 78 flow. Second operand 3 states and 97 transitions. [2024-06-04 16:22:36,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 46 transitions, 177 flow [2024-06-04 16:22:36,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 46 transitions, 174 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-04 16:22:36,415 INFO L231 Difference]: Finished difference. Result has 44 places, 38 transitions, 97 flow [2024-06-04 16:22:36,417 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} [2024-06-04 16:22:36,419 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 1 predicate places. [2024-06-04 16:22:36,419 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 38 transitions, 97 flow [2024-06-04 16:22:36,420 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) [2024-06-04 16:22:36,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:22:36,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:22:36,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-04 16:22:36,421 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)] === [2024-06-04 16:22:36,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:22:36,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1721980601, now seen corresponding path program 1 times [2024-06-04 16:22:36,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:22:36,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630775802] [2024-06-04 16:22:36,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:22:36,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:22:36,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:22:36,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:22:36,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:22:36,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630775802] [2024-06-04 16:22:36,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630775802] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:22:36,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:22:36,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 16:22:36,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750678029] [2024-06-04 16:22:36,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:22:36,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 16:22:36,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:22:36,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 16:22:36,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-04 16:22:36,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 66 [2024-06-04 16:22:36,658 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) [2024-06-04 16:22:36,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:22:36,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 66 [2024-06-04 16:22:36,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:22:36,875 INFO L124 PetriNetUnfolderBase]: 411/794 cut-off events. [2024-06-04 16:22:36,876 INFO L125 PetriNetUnfolderBase]: For 117/117 co-relation queries the response was YES. [2024-06-04 16:22:36,877 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. [2024-06-04 16:22:36,879 INFO L140 encePairwiseOnDemand]: 57/66 looper letters, 54 selfloop transitions, 11 changer transitions 0/73 dead transitions. [2024-06-04 16:22:36,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 73 transitions, 310 flow [2024-06-04 16:22:36,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 16:22:36,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 16:22:36,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 204 transitions. [2024-06-04 16:22:36,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44155844155844154 [2024-06-04 16:22:36,882 INFO L175 Difference]: Start difference. First operand has 44 places, 38 transitions, 97 flow. Second operand 7 states and 204 transitions. [2024-06-04 16:22:36,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 73 transitions, 310 flow [2024-06-04 16:22:36,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 73 transitions, 306 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-04 16:22:36,884 INFO L231 Difference]: Finished difference. Result has 52 places, 43 transitions, 155 flow [2024-06-04 16:22:36,884 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} [2024-06-04 16:22:36,885 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 9 predicate places. [2024-06-04 16:22:36,885 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 43 transitions, 155 flow [2024-06-04 16:22:36,885 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) [2024-06-04 16:22:36,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:22:36,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:22:36,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-04 16:22:36,886 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)] === [2024-06-04 16:22:36,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:22:36,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1528966906, now seen corresponding path program 1 times [2024-06-04 16:22:36,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:22:36,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572587193] [2024-06-04 16:22:36,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:22:36,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:22:36,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:22:37,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:22:37,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:22:37,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572587193] [2024-06-04 16:22:37,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572587193] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:22:37,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:22:37,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-04 16:22:37,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656473527] [2024-06-04 16:22:37,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:22:37,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-04 16:22:37,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:22:37,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-04 16:22:37,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-04 16:22:37,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 66 [2024-06-04 16:22:37,010 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) [2024-06-04 16:22:37,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:22:37,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 66 [2024-06-04 16:22:37,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:22:37,133 INFO L124 PetriNetUnfolderBase]: 372/725 cut-off events. [2024-06-04 16:22:37,134 INFO L125 PetriNetUnfolderBase]: For 727/727 co-relation queries the response was YES. [2024-06-04 16:22:37,135 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. [2024-06-04 16:22:37,138 INFO L140 encePairwiseOnDemand]: 59/66 looper letters, 46 selfloop transitions, 11 changer transitions 0/65 dead transitions. [2024-06-04 16:22:37,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 65 transitions, 331 flow [2024-06-04 16:22:37,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 16:22:37,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 16:22:37,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 146 transitions. [2024-06-04 16:22:37,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44242424242424244 [2024-06-04 16:22:37,139 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 155 flow. Second operand 5 states and 146 transitions. [2024-06-04 16:22:37,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 65 transitions, 331 flow [2024-06-04 16:22:37,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 65 transitions, 316 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-04 16:22:37,143 INFO L231 Difference]: Finished difference. Result has 57 places, 49 transitions, 211 flow [2024-06-04 16:22:37,143 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} [2024-06-04 16:22:37,144 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 14 predicate places. [2024-06-04 16:22:37,144 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 49 transitions, 211 flow [2024-06-04 16:22:37,144 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) [2024-06-04 16:22:37,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:22:37,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:22:37,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-04 16:22:37,145 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)] === [2024-06-04 16:22:37,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:22:37,145 INFO L85 PathProgramCache]: Analyzing trace with hash -295878395, now seen corresponding path program 1 times [2024-06-04 16:22:37,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:22:37,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960175102] [2024-06-04 16:22:37,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:22:37,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:22:37,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:22:37,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:22:37,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:22:37,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960175102] [2024-06-04 16:22:37,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960175102] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:22:37,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:22:37,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 16:22:37,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726868750] [2024-06-04 16:22:37,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:22:37,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 16:22:37,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:22:37,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 16:22:37,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-04 16:22:37,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 66 [2024-06-04 16:22:37,360 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) [2024-06-04 16:22:37,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:22:37,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 66 [2024-06-04 16:22:37,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:22:37,558 INFO L124 PetriNetUnfolderBase]: 499/984 cut-off events. [2024-06-04 16:22:37,558 INFO L125 PetriNetUnfolderBase]: For 2333/2333 co-relation queries the response was YES. [2024-06-04 16:22:37,560 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. [2024-06-04 16:22:37,563 INFO L140 encePairwiseOnDemand]: 55/66 looper letters, 64 selfloop transitions, 18 changer transitions 9/99 dead transitions. [2024-06-04 16:22:37,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 99 transitions, 546 flow [2024-06-04 16:22:37,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 16:22:37,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 16:22:37,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 255 transitions. [2024-06-04 16:22:37,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4292929292929293 [2024-06-04 16:22:37,565 INFO L175 Difference]: Start difference. First operand has 57 places, 49 transitions, 211 flow. Second operand 9 states and 255 transitions. [2024-06-04 16:22:37,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 99 transitions, 546 flow [2024-06-04 16:22:37,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 99 transitions, 537 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-04 16:22:37,571 INFO L231 Difference]: Finished difference. Result has 69 places, 60 transitions, 351 flow [2024-06-04 16:22:37,572 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} [2024-06-04 16:22:37,573 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 26 predicate places. [2024-06-04 16:22:37,573 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 60 transitions, 351 flow [2024-06-04 16:22:37,573 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) [2024-06-04 16:22:37,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:22:37,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:22:37,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-04 16:22:37,574 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)] === [2024-06-04 16:22:37,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:22:37,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1873934903, now seen corresponding path program 2 times [2024-06-04 16:22:37,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:22:37,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740501801] [2024-06-04 16:22:37,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:22:37,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:22:37,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:22:37,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:22:37,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:22:37,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740501801] [2024-06-04 16:22:37,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740501801] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:22:37,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:22:37,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 16:22:37,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204243528] [2024-06-04 16:22:37,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:22:37,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 16:22:37,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:22:37,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 16:22:37,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-04 16:22:37,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 66 [2024-06-04 16:22:37,855 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) [2024-06-04 16:22:37,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:22:37,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 66 [2024-06-04 16:22:37,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:22:38,126 INFO L124 PetriNetUnfolderBase]: 578/1142 cut-off events. [2024-06-04 16:22:38,126 INFO L125 PetriNetUnfolderBase]: For 5517/5517 co-relation queries the response was YES. [2024-06-04 16:22:38,128 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. [2024-06-04 16:22:38,132 INFO L140 encePairwiseOnDemand]: 55/66 looper letters, 69 selfloop transitions, 19 changer transitions 9/105 dead transitions. [2024-06-04 16:22:38,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 105 transitions, 711 flow [2024-06-04 16:22:38,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 16:22:38,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 16:22:38,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 252 transitions. [2024-06-04 16:22:38,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-06-04 16:22:38,149 INFO L175 Difference]: Start difference. First operand has 69 places, 60 transitions, 351 flow. Second operand 9 states and 252 transitions. [2024-06-04 16:22:38,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 105 transitions, 711 flow [2024-06-04 16:22:38,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 105 transitions, 682 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-04 16:22:38,158 INFO L231 Difference]: Finished difference. Result has 79 places, 69 transitions, 479 flow [2024-06-04 16:22:38,158 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} [2024-06-04 16:22:38,159 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 36 predicate places. [2024-06-04 16:22:38,159 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 69 transitions, 479 flow [2024-06-04 16:22:38,172 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) [2024-06-04 16:22:38,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:22:38,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:22:38,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-04 16:22:38,172 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)] === [2024-06-04 16:22:38,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:22:38,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1877186377, now seen corresponding path program 3 times [2024-06-04 16:22:38,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:22:38,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571604553] [2024-06-04 16:22:38,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:22:38,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:22:38,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:22:38,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:22:38,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:22:38,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571604553] [2024-06-04 16:22:38,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571604553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:22:38,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:22:38,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 16:22:38,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396378121] [2024-06-04 16:22:38,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:22:38,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 16:22:38,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:22:38,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 16:22:38,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-04 16:22:38,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 66 [2024-06-04 16:22:38,449 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) [2024-06-04 16:22:38,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:22:38,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 66 [2024-06-04 16:22:38,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:22:38,642 INFO L124 PetriNetUnfolderBase]: 557/1099 cut-off events. [2024-06-04 16:22:38,642 INFO L125 PetriNetUnfolderBase]: For 6823/6823 co-relation queries the response was YES. [2024-06-04 16:22:38,649 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. [2024-06-04 16:22:38,653 INFO L140 encePairwiseOnDemand]: 54/66 looper letters, 60 selfloop transitions, 35 changer transitions 0/103 dead transitions. [2024-06-04 16:22:38,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 103 transitions, 777 flow [2024-06-04 16:22:38,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 16:22:38,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 16:22:38,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 221 transitions. [2024-06-04 16:22:38,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4185606060606061 [2024-06-04 16:22:38,654 INFO L175 Difference]: Start difference. First operand has 79 places, 69 transitions, 479 flow. Second operand 8 states and 221 transitions. [2024-06-04 16:22:38,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 103 transitions, 777 flow [2024-06-04 16:22:38,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 103 transitions, 741 flow, removed 13 selfloop flow, removed 1 redundant places. [2024-06-04 16:22:38,663 INFO L231 Difference]: Finished difference. Result has 89 places, 80 transitions, 612 flow [2024-06-04 16:22:38,663 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} [2024-06-04 16:22:38,664 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 46 predicate places. [2024-06-04 16:22:38,664 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 80 transitions, 612 flow [2024-06-04 16:22:38,664 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) [2024-06-04 16:22:38,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:22:38,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:22:38,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-04 16:22:38,665 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)] === [2024-06-04 16:22:38,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:22:38,665 INFO L85 PathProgramCache]: Analyzing trace with hash -736713525, now seen corresponding path program 4 times [2024-06-04 16:22:38,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:22:38,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486282105] [2024-06-04 16:22:38,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:22:38,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:22:38,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:22:38,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:22:38,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:22:38,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486282105] [2024-06-04 16:22:38,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486282105] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:22:38,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:22:38,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 16:22:38,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072410919] [2024-06-04 16:22:38,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:22:38,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 16:22:38,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:22:38,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 16:22:38,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-04 16:22:38,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 66 [2024-06-04 16:22:38,918 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) [2024-06-04 16:22:38,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:22:38,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 66 [2024-06-04 16:22:38,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:22:39,135 INFO L124 PetriNetUnfolderBase]: 672/1325 cut-off events. [2024-06-04 16:22:39,135 INFO L125 PetriNetUnfolderBase]: For 11547/11547 co-relation queries the response was YES. [2024-06-04 16:22:39,138 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. [2024-06-04 16:22:39,142 INFO L140 encePairwiseOnDemand]: 55/66 looper letters, 91 selfloop transitions, 19 changer transitions 9/127 dead transitions. [2024-06-04 16:22:39,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 127 transitions, 1046 flow [2024-06-04 16:22:39,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 16:22:39,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 16:22:39,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 255 transitions. [2024-06-04 16:22:39,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4292929292929293 [2024-06-04 16:22:39,144 INFO L175 Difference]: Start difference. First operand has 89 places, 80 transitions, 612 flow. Second operand 9 states and 255 transitions. [2024-06-04 16:22:39,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 127 transitions, 1046 flow [2024-06-04 16:22:39,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 127 transitions, 979 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-04 16:22:39,158 INFO L231 Difference]: Finished difference. Result has 98 places, 88 transitions, 686 flow [2024-06-04 16:22:39,158 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} [2024-06-04 16:22:39,159 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 55 predicate places. [2024-06-04 16:22:39,159 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 88 transitions, 686 flow [2024-06-04 16:22:39,159 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) [2024-06-04 16:22:39,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:22:39,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:22:39,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-04 16:22:39,159 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)] === [2024-06-04 16:22:39,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:22:39,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1873946993, now seen corresponding path program 5 times [2024-06-04 16:22:39,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:22:39,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735958828] [2024-06-04 16:22:39,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:22:39,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:22:39,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:22:39,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:22:39,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:22:39,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735958828] [2024-06-04 16:22:39,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735958828] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:22:39,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:22:39,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 16:22:39,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523014088] [2024-06-04 16:22:39,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:22:39,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 16:22:39,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:22:39,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 16:22:39,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-04 16:22:39,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 66 [2024-06-04 16:22:39,368 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) [2024-06-04 16:22:39,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:22:39,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 66 [2024-06-04 16:22:39,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:22:39,645 INFO L124 PetriNetUnfolderBase]: 751/1483 cut-off events. [2024-06-04 16:22:39,645 INFO L125 PetriNetUnfolderBase]: For 17417/17417 co-relation queries the response was YES. [2024-06-04 16:22:39,648 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. [2024-06-04 16:22:39,653 INFO L140 encePairwiseOnDemand]: 55/66 looper letters, 96 selfloop transitions, 19 changer transitions 9/132 dead transitions. [2024-06-04 16:22:39,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 132 transitions, 1156 flow [2024-06-04 16:22:39,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 16:22:39,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 16:22:39,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 252 transitions. [2024-06-04 16:22:39,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-06-04 16:22:39,655 INFO L175 Difference]: Start difference. First operand has 98 places, 88 transitions, 686 flow. Second operand 9 states and 252 transitions. [2024-06-04 16:22:39,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 132 transitions, 1156 flow [2024-06-04 16:22:39,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 132 transitions, 1107 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-06-04 16:22:39,669 INFO L231 Difference]: Finished difference. Result has 106 places, 96 transitions, 798 flow [2024-06-04 16:22:39,669 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} [2024-06-04 16:22:39,669 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 63 predicate places. [2024-06-04 16:22:39,669 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 96 transitions, 798 flow [2024-06-04 16:22:39,670 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) [2024-06-04 16:22:39,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:22:39,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:22:39,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-04 16:22:39,670 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)] === [2024-06-04 16:22:39,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:22:39,670 INFO L85 PathProgramCache]: Analyzing trace with hash -141051889, now seen corresponding path program 6 times [2024-06-04 16:22:39,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:22:39,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416120505] [2024-06-04 16:22:39,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:22:39,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:22:39,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:22:39,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:22:39,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:22:39,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416120505] [2024-06-04 16:22:39,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416120505] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:22:39,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:22:39,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 16:22:39,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73543587] [2024-06-04 16:22:39,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:22:39,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 16:22:39,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:22:39,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 16:22:39,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-04 16:22:39,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 66 [2024-06-04 16:22:39,842 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) [2024-06-04 16:22:39,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:22:39,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 66 [2024-06-04 16:22:39,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:22:40,119 INFO L124 PetriNetUnfolderBase]: 787/1558 cut-off events. [2024-06-04 16:22:40,119 INFO L125 PetriNetUnfolderBase]: For 22685/22685 co-relation queries the response was YES. [2024-06-04 16:22:40,123 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. [2024-06-04 16:22:40,128 INFO L140 encePairwiseOnDemand]: 55/66 looper letters, 90 selfloop transitions, 30 changer transitions 8/136 dead transitions. [2024-06-04 16:22:40,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 136 transitions, 1252 flow [2024-06-04 16:22:40,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 16:22:40,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 16:22:40,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 248 transitions. [2024-06-04 16:22:40,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4175084175084175 [2024-06-04 16:22:40,129 INFO L175 Difference]: Start difference. First operand has 106 places, 96 transitions, 798 flow. Second operand 9 states and 248 transitions. [2024-06-04 16:22:40,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 136 transitions, 1252 flow [2024-06-04 16:22:40,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 136 transitions, 1185 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-04 16:22:40,146 INFO L231 Difference]: Finished difference. Result has 114 places, 101 transitions, 887 flow [2024-06-04 16:22:40,147 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} [2024-06-04 16:22:40,147 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 71 predicate places. [2024-06-04 16:22:40,147 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 101 transitions, 887 flow [2024-06-04 16:22:40,147 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) [2024-06-04 16:22:40,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:22:40,147 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] [2024-06-04 16:22:40,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-04 16:22:40,148 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)] === [2024-06-04 16:22:40,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:22:40,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1936750179, now seen corresponding path program 1 times [2024-06-04 16:22:40,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:22:40,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871400484] [2024-06-04 16:22:40,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:22:40,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:22:40,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:22:40,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:22:40,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:22:40,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871400484] [2024-06-04 16:22:40,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871400484] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:22:40,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:22:40,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 16:22:40,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73404631] [2024-06-04 16:22:40,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:22:40,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 16:22:40,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:22:40,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 16:22:40,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-04 16:22:40,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 66 [2024-06-04 16:22:40,330 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) [2024-06-04 16:22:40,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:22:40,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 66 [2024-06-04 16:22:40,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:22:40,664 INFO L124 PetriNetUnfolderBase]: 797/1594 cut-off events. [2024-06-04 16:22:40,664 INFO L125 PetriNetUnfolderBase]: For 26145/26145 co-relation queries the response was YES. [2024-06-04 16:22:40,667 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. [2024-06-04 16:22:40,673 INFO L140 encePairwiseOnDemand]: 55/66 looper letters, 99 selfloop transitions, 31 changer transitions 13/151 dead transitions. [2024-06-04 16:22:40,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 151 transitions, 1451 flow [2024-06-04 16:22:40,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 16:22:40,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 16:22:40,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 263 transitions. [2024-06-04 16:22:40,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44276094276094274 [2024-06-04 16:22:40,675 INFO L175 Difference]: Start difference. First operand has 114 places, 101 transitions, 887 flow. Second operand 9 states and 263 transitions. [2024-06-04 16:22:40,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 151 transitions, 1451 flow [2024-06-04 16:22:40,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 151 transitions, 1342 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-04 16:22:40,697 INFO L231 Difference]: Finished difference. Result has 121 places, 102 transitions, 919 flow [2024-06-04 16:22:40,697 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} [2024-06-04 16:22:40,697 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 78 predicate places. [2024-06-04 16:22:40,697 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 102 transitions, 919 flow [2024-06-04 16:22:40,698 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) [2024-06-04 16:22:40,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:22:40,698 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] [2024-06-04 16:22:40,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-04 16:22:40,698 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)] === [2024-06-04 16:22:40,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:22:40,698 INFO L85 PathProgramCache]: Analyzing trace with hash -664733499, now seen corresponding path program 1 times [2024-06-04 16:22:40,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:22:40,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215513497] [2024-06-04 16:22:40,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:22:40,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:22:40,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:22:40,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:22:40,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:22:40,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215513497] [2024-06-04 16:22:40,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215513497] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:22:40,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:22:40,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 16:22:40,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701870984] [2024-06-04 16:22:40,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:22:40,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 16:22:40,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:22:40,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 16:22:40,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-04 16:22:40,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 66 [2024-06-04 16:22:40,913 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) [2024-06-04 16:22:40,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:22:40,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 66 [2024-06-04 16:22:40,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:22:41,179 INFO L124 PetriNetUnfolderBase]: 732/1462 cut-off events. [2024-06-04 16:22:41,179 INFO L125 PetriNetUnfolderBase]: For 20380/20380 co-relation queries the response was YES. [2024-06-04 16:22:41,184 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. [2024-06-04 16:22:41,189 INFO L140 encePairwiseOnDemand]: 52/66 looper letters, 82 selfloop transitions, 38 changer transitions 0/128 dead transitions. [2024-06-04 16:22:41,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 128 transitions, 1243 flow [2024-06-04 16:22:41,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 16:22:41,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 16:22:41,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 262 transitions. [2024-06-04 16:22:41,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396969696969697 [2024-06-04 16:22:41,191 INFO L175 Difference]: Start difference. First operand has 121 places, 102 transitions, 919 flow. Second operand 10 states and 262 transitions. [2024-06-04 16:22:41,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 128 transitions, 1243 flow [2024-06-04 16:22:41,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 128 transitions, 1131 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-06-04 16:22:41,213 INFO L231 Difference]: Finished difference. Result has 121 places, 104 transitions, 898 flow [2024-06-04 16:22:41,213 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} [2024-06-04 16:22:41,213 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 78 predicate places. [2024-06-04 16:22:41,213 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 104 transitions, 898 flow [2024-06-04 16:22:41,213 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) [2024-06-04 16:22:41,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:22:41,214 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] [2024-06-04 16:22:41,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-04 16:22:41,214 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)] === [2024-06-04 16:22:41,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:22:41,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1872805063, now seen corresponding path program 2 times [2024-06-04 16:22:41,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:22:41,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369760952] [2024-06-04 16:22:41,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:22:41,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:22:41,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:22:41,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:22:41,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:22:41,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369760952] [2024-06-04 16:22:41,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369760952] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:22:41,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:22:41,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 16:22:41,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452844535] [2024-06-04 16:22:41,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:22:41,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 16:22:41,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:22:41,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 16:22:41,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-04 16:22:41,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 66 [2024-06-04 16:22:41,351 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) [2024-06-04 16:22:41,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:22:41,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 66 [2024-06-04 16:22:41,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:22:41,571 INFO L124 PetriNetUnfolderBase]: 853/1708 cut-off events. [2024-06-04 16:22:41,571 INFO L125 PetriNetUnfolderBase]: For 31672/31672 co-relation queries the response was YES. [2024-06-04 16:22:41,576 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. [2024-06-04 16:22:41,589 INFO L140 encePairwiseOnDemand]: 58/66 looper letters, 81 selfloop transitions, 34 changer transitions 20/143 dead transitions. [2024-06-04 16:22:41,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 143 transitions, 1543 flow [2024-06-04 16:22:41,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 16:22:41,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 16:22:41,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 206 transitions. [2024-06-04 16:22:41,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4458874458874459 [2024-06-04 16:22:41,590 INFO L175 Difference]: Start difference. First operand has 121 places, 104 transitions, 898 flow. Second operand 7 states and 206 transitions. [2024-06-04 16:22:41,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 143 transitions, 1543 flow [2024-06-04 16:22:41,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 143 transitions, 1466 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-04 16:22:41,617 INFO L231 Difference]: Finished difference. Result has 122 places, 93 transitions, 888 flow [2024-06-04 16:22:41,617 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} [2024-06-04 16:22:41,618 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 79 predicate places. [2024-06-04 16:22:41,618 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 93 transitions, 888 flow [2024-06-04 16:22:41,619 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) [2024-06-04 16:22:41,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:22:41,619 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] [2024-06-04 16:22:41,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-04 16:22:41,619 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)] === [2024-06-04 16:22:41,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:22:41,619 INFO L85 PathProgramCache]: Analyzing trace with hash 372780263, now seen corresponding path program 3 times [2024-06-04 16:22:41,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:22:41,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805296988] [2024-06-04 16:22:41,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:22:41,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:22:41,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:22:41,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:22:41,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:22:41,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805296988] [2024-06-04 16:22:41,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805296988] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:22:41,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:22:41,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-04 16:22:41,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418371753] [2024-06-04 16:22:41,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:22:41,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-04 16:22:41,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:22:41,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-04 16:22:41,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-04 16:22:41,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 66 [2024-06-04 16:22:41,673 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) [2024-06-04 16:22:41,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:22:41,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 66 [2024-06-04 16:22:41,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:22:41,786 INFO L124 PetriNetUnfolderBase]: 400/904 cut-off events. [2024-06-04 16:22:41,786 INFO L125 PetriNetUnfolderBase]: For 16179/16343 co-relation queries the response was YES. [2024-06-04 16:22:41,789 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. [2024-06-04 16:22:41,792 INFO L140 encePairwiseOnDemand]: 56/66 looper letters, 86 selfloop transitions, 22 changer transitions 1/118 dead transitions. [2024-06-04 16:22:41,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 118 transitions, 1394 flow [2024-06-04 16:22:41,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-04 16:22:41,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-04 16:22:41,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 109 transitions. [2024-06-04 16:22:41,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5505050505050505 [2024-06-04 16:22:41,793 INFO L175 Difference]: Start difference. First operand has 122 places, 93 transitions, 888 flow. Second operand 3 states and 109 transitions. [2024-06-04 16:22:41,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 118 transitions, 1394 flow [2024-06-04 16:22:41,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 118 transitions, 1253 flow, removed 34 selfloop flow, removed 13 redundant places. [2024-06-04 16:22:41,842 INFO L231 Difference]: Finished difference. Result has 108 places, 100 transitions, 964 flow [2024-06-04 16:22:41,843 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} [2024-06-04 16:22:41,843 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 65 predicate places. [2024-06-04 16:22:41,844 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 100 transitions, 964 flow [2024-06-04 16:22:41,844 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) [2024-06-04 16:22:41,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:22:41,844 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] [2024-06-04 16:22:41,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-04 16:22:41,844 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)] === [2024-06-04 16:22:41,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:22:41,845 INFO L85 PathProgramCache]: Analyzing trace with hash -167713524, now seen corresponding path program 1 times [2024-06-04 16:22:41,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:22:41,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697838574] [2024-06-04 16:22:41,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:22:41,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:22:41,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:22:42,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:22:42,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:22:42,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697838574] [2024-06-04 16:22:42,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697838574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:22:42,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:22:42,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 16:22:42,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378681060] [2024-06-04 16:22:42,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:22:42,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 16:22:42,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:22:42,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 16:22:42,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-04 16:22:42,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 66 [2024-06-04 16:22:42,019 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) [2024-06-04 16:22:42,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:22:42,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 66 [2024-06-04 16:22:42,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:22:42,190 INFO L124 PetriNetUnfolderBase]: 469/1052 cut-off events. [2024-06-04 16:22:42,190 INFO L125 PetriNetUnfolderBase]: For 21842/21854 co-relation queries the response was YES. [2024-06-04 16:22:42,192 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. [2024-06-04 16:22:42,195 INFO L140 encePairwiseOnDemand]: 59/66 looper letters, 83 selfloop transitions, 8 changer transitions 29/128 dead transitions. [2024-06-04 16:22:42,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 128 transitions, 1404 flow [2024-06-04 16:22:42,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 16:22:42,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 16:22:42,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 195 transitions. [2024-06-04 16:22:42,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42207792207792205 [2024-06-04 16:22:42,197 INFO L175 Difference]: Start difference. First operand has 108 places, 100 transitions, 964 flow. Second operand 7 states and 195 transitions. [2024-06-04 16:22:42,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 128 transitions, 1404 flow [2024-06-04 16:22:42,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 128 transitions, 1368 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-04 16:22:42,217 INFO L231 Difference]: Finished difference. Result has 114 places, 94 transitions, 919 flow [2024-06-04 16:22:42,218 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} [2024-06-04 16:22:42,218 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 71 predicate places. [2024-06-04 16:22:42,220 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 94 transitions, 919 flow [2024-06-04 16:22:42,220 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) [2024-06-04 16:22:42,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:22:42,220 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] [2024-06-04 16:22:42,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-04 16:22:42,220 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)] === [2024-06-04 16:22:42,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:22:42,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1975647216, now seen corresponding path program 2 times [2024-06-04 16:22:42,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:22:42,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382247968] [2024-06-04 16:22:42,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:22:42,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:22:42,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:22:42,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:22:42,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:22:42,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382247968] [2024-06-04 16:22:42,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382247968] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:22:42,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:22:42,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 16:22:42,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457524976] [2024-06-04 16:22:42,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:22:42,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 16:22:42,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:22:42,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 16:22:42,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 16:22:42,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 66 [2024-06-04 16:22:42,462 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) [2024-06-04 16:22:42,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:22:42,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 66 [2024-06-04 16:22:42,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:22:42,671 INFO L124 PetriNetUnfolderBase]: 401/892 cut-off events. [2024-06-04 16:22:42,671 INFO L125 PetriNetUnfolderBase]: For 18404/18416 co-relation queries the response was YES. [2024-06-04 16:22:42,673 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. [2024-06-04 16:22:42,675 INFO L140 encePairwiseOnDemand]: 53/66 looper letters, 91 selfloop transitions, 18 changer transitions 0/117 dead transitions. [2024-06-04 16:22:42,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 117 transitions, 1233 flow [2024-06-04 16:22:42,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 16:22:42,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 16:22:42,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 252 transitions. [2024-06-04 16:22:42,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38181818181818183 [2024-06-04 16:22:42,678 INFO L175 Difference]: Start difference. First operand has 114 places, 94 transitions, 919 flow. Second operand 10 states and 252 transitions. [2024-06-04 16:22:42,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 117 transitions, 1233 flow [2024-06-04 16:22:42,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 117 transitions, 1156 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-04 16:22:42,693 INFO L231 Difference]: Finished difference. Result has 109 places, 97 transitions, 921 flow [2024-06-04 16:22:42,694 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} [2024-06-04 16:22:42,694 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 66 predicate places. [2024-06-04 16:22:42,695 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 97 transitions, 921 flow [2024-06-04 16:22:42,695 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) [2024-06-04 16:22:42,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:22:42,695 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] [2024-06-04 16:22:42,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-04 16:22:42,695 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)] === [2024-06-04 16:22:42,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:22:42,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1657566033, now seen corresponding path program 1 times [2024-06-04 16:22:42,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:22:42,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195820956] [2024-06-04 16:22:42,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:22:42,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:22:42,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:22:42,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:22:42,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:22:42,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195820956] [2024-06-04 16:22:42,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195820956] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:22:42,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:22:42,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 16:22:42,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44506375] [2024-06-04 16:22:42,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:22:42,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 16:22:42,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:22:42,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 16:22:42,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 16:22:42,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 66 [2024-06-04 16:22:42,934 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) [2024-06-04 16:22:42,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:22:42,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 66 [2024-06-04 16:22:42,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:22:43,142 INFO L124 PetriNetUnfolderBase]: 402/893 cut-off events. [2024-06-04 16:22:43,142 INFO L125 PetriNetUnfolderBase]: For 14802/14814 co-relation queries the response was YES. [2024-06-04 16:22:43,144 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. [2024-06-04 16:22:43,147 INFO L140 encePairwiseOnDemand]: 52/66 looper letters, 91 selfloop transitions, 23 changer transitions 0/122 dead transitions. [2024-06-04 16:22:43,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 122 transitions, 1243 flow [2024-06-04 16:22:43,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 16:22:43,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 16:22:43,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 256 transitions. [2024-06-04 16:22:43,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3878787878787879 [2024-06-04 16:22:43,148 INFO L175 Difference]: Start difference. First operand has 109 places, 97 transitions, 921 flow. Second operand 10 states and 256 transitions. [2024-06-04 16:22:43,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 122 transitions, 1243 flow [2024-06-04 16:22:43,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 122 transitions, 1209 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-04 16:22:43,164 INFO L231 Difference]: Finished difference. Result has 113 places, 100 transitions, 964 flow [2024-06-04 16:22:43,164 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} [2024-06-04 16:22:43,165 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 70 predicate places. [2024-06-04 16:22:43,165 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 100 transitions, 964 flow [2024-06-04 16:22:43,165 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) [2024-06-04 16:22:43,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:22:43,166 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] [2024-06-04 16:22:43,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-04 16:22:43,166 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)] === [2024-06-04 16:22:43,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:22:43,166 INFO L85 PathProgramCache]: Analyzing trace with hash -2004387678, now seen corresponding path program 1 times [2024-06-04 16:22:43,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:22:43,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818834461] [2024-06-04 16:22:43,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:22:43,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:22:43,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:22:43,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:22:43,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:22:43,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818834461] [2024-06-04 16:22:43,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818834461] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:22:43,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:22:43,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 16:22:43,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732140228] [2024-06-04 16:22:43,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:22:43,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 16:22:43,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:22:43,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 16:22:43,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 16:22:43,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 66 [2024-06-04 16:22:43,400 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) [2024-06-04 16:22:43,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:22:43,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 66 [2024-06-04 16:22:43,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:22:43,597 INFO L124 PetriNetUnfolderBase]: 407/904 cut-off events. [2024-06-04 16:22:43,598 INFO L125 PetriNetUnfolderBase]: For 16090/16090 co-relation queries the response was YES. [2024-06-04 16:22:43,600 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. [2024-06-04 16:22:43,603 INFO L140 encePairwiseOnDemand]: 54/66 looper letters, 93 selfloop transitions, 21 changer transitions 0/122 dead transitions. [2024-06-04 16:22:43,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 122 transitions, 1295 flow [2024-06-04 16:22:43,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 16:22:43,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 16:22:43,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 232 transitions. [2024-06-04 16:22:43,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39057239057239057 [2024-06-04 16:22:43,605 INFO L175 Difference]: Start difference. First operand has 113 places, 100 transitions, 964 flow. Second operand 9 states and 232 transitions. [2024-06-04 16:22:43,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 122 transitions, 1295 flow [2024-06-04 16:22:43,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 122 transitions, 1255 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-04 16:22:43,621 INFO L231 Difference]: Finished difference. Result has 117 places, 105 transitions, 1033 flow [2024-06-04 16:22:43,622 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} [2024-06-04 16:22:43,622 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 74 predicate places. [2024-06-04 16:22:43,622 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 105 transitions, 1033 flow [2024-06-04 16:22:43,622 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) [2024-06-04 16:22:43,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:22:43,623 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] [2024-06-04 16:22:43,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-04 16:22:43,623 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)] === [2024-06-04 16:22:43,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:22:43,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1714258900, now seen corresponding path program 3 times [2024-06-04 16:22:43,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:22:43,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612207970] [2024-06-04 16:22:43,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:22:43,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:22:43,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:22:43,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:22:43,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:22:43,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612207970] [2024-06-04 16:22:43,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612207970] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:22:43,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:22:43,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 16:22:43,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320403478] [2024-06-04 16:22:43,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:22:43,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 16:22:43,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:22:43,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 16:22:43,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 16:22:43,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 66 [2024-06-04 16:22:43,856 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) [2024-06-04 16:22:43,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:22:43,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 66 [2024-06-04 16:22:43,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:22:44,054 INFO L124 PetriNetUnfolderBase]: 406/903 cut-off events. [2024-06-04 16:22:44,054 INFO L125 PetriNetUnfolderBase]: For 16904/16904 co-relation queries the response was YES. [2024-06-04 16:22:44,057 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. [2024-06-04 16:22:44,059 INFO L140 encePairwiseOnDemand]: 53/66 looper letters, 98 selfloop transitions, 19 changer transitions 0/125 dead transitions. [2024-06-04 16:22:44,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 125 transitions, 1372 flow [2024-06-04 16:22:44,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 16:22:44,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 16:22:44,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 248 transitions. [2024-06-04 16:22:44,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37575757575757573 [2024-06-04 16:22:44,061 INFO L175 Difference]: Start difference. First operand has 117 places, 105 transitions, 1033 flow. Second operand 10 states and 248 transitions. [2024-06-04 16:22:44,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 125 transitions, 1372 flow [2024-06-04 16:22:44,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 125 transitions, 1339 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-04 16:22:44,076 INFO L231 Difference]: Finished difference. Result has 124 places, 108 transitions, 1077 flow [2024-06-04 16:22:44,076 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} [2024-06-04 16:22:44,077 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 81 predicate places. [2024-06-04 16:22:44,077 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 108 transitions, 1077 flow [2024-06-04 16:22:44,077 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) [2024-06-04 16:22:44,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:22:44,079 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] [2024-06-04 16:22:44,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-04 16:22:44,079 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)] === [2024-06-04 16:22:44,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:22:44,079 INFO L85 PathProgramCache]: Analyzing trace with hash -355634307, now seen corresponding path program 2 times [2024-06-04 16:22:44,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:22:44,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658361280] [2024-06-04 16:22:44,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:22:44,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:22:44,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:22:44,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:22:44,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:22:44,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658361280] [2024-06-04 16:22:44,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658361280] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:22:44,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:22:44,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 16:22:44,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867636711] [2024-06-04 16:22:44,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:22:44,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 16:22:44,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:22:44,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 16:22:44,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-04 16:22:44,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 66 [2024-06-04 16:22:44,293 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) [2024-06-04 16:22:44,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:22:44,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 66 [2024-06-04 16:22:44,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:22:44,506 INFO L124 PetriNetUnfolderBase]: 407/906 cut-off events. [2024-06-04 16:22:44,507 INFO L125 PetriNetUnfolderBase]: For 18468/18468 co-relation queries the response was YES. [2024-06-04 16:22:44,509 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. [2024-06-04 16:22:44,512 INFO L140 encePairwiseOnDemand]: 52/66 looper letters, 98 selfloop transitions, 24 changer transitions 0/130 dead transitions. [2024-06-04 16:22:44,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 130 transitions, 1440 flow [2024-06-04 16:22:44,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 16:22:44,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 16:22:44,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 253 transitions. [2024-06-04 16:22:44,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38333333333333336 [2024-06-04 16:22:44,513 INFO L175 Difference]: Start difference. First operand has 124 places, 108 transitions, 1077 flow. Second operand 10 states and 253 transitions. [2024-06-04 16:22:44,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 130 transitions, 1440 flow [2024-06-04 16:22:44,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 130 transitions, 1394 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-04 16:22:44,532 INFO L231 Difference]: Finished difference. Result has 128 places, 111 transitions, 1120 flow [2024-06-04 16:22:44,532 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} [2024-06-04 16:22:44,533 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 85 predicate places. [2024-06-04 16:22:44,533 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 111 transitions, 1120 flow [2024-06-04 16:22:44,533 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) [2024-06-04 16:22:44,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:22:44,533 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] [2024-06-04 16:22:44,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-04 16:22:44,534 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)] === [2024-06-04 16:22:44,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:22:44,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1538593202, now seen corresponding path program 2 times [2024-06-04 16:22:44,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:22:44,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445802273] [2024-06-04 16:22:44,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:22:44,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:22:44,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:22:44,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:22:44,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:22:44,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445802273] [2024-06-04 16:22:44,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445802273] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:22:44,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:22:44,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 16:22:44,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701584735] [2024-06-04 16:22:44,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:22:44,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 16:22:44,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:22:44,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 16:22:44,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-04 16:22:44,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 66 [2024-06-04 16:22:44,758 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) [2024-06-04 16:22:44,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:22:44,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 66 [2024-06-04 16:22:44,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:22:44,941 INFO L124 PetriNetUnfolderBase]: 411/914 cut-off events. [2024-06-04 16:22:44,941 INFO L125 PetriNetUnfolderBase]: For 19993/19993 co-relation queries the response was YES. [2024-06-04 16:22:44,943 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. [2024-06-04 16:22:44,946 INFO L140 encePairwiseOnDemand]: 54/66 looper letters, 100 selfloop transitions, 22 changer transitions 0/130 dead transitions. [2024-06-04 16:22:44,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 130 transitions, 1484 flow [2024-06-04 16:22:44,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 16:22:44,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 16:22:44,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 229 transitions. [2024-06-04 16:22:44,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38552188552188554 [2024-06-04 16:22:44,947 INFO L175 Difference]: Start difference. First operand has 128 places, 111 transitions, 1120 flow. Second operand 9 states and 229 transitions. [2024-06-04 16:22:44,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 130 transitions, 1484 flow [2024-06-04 16:22:44,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 130 transitions, 1428 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-04 16:22:44,968 INFO L231 Difference]: Finished difference. Result has 132 places, 116 transitions, 1185 flow [2024-06-04 16:22:44,969 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} [2024-06-04 16:22:44,969 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 89 predicate places. [2024-06-04 16:22:44,969 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 116 transitions, 1185 flow [2024-06-04 16:22:44,969 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) [2024-06-04 16:22:44,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:22:44,970 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] [2024-06-04 16:22:44,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-04 16:22:44,970 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)] === [2024-06-04 16:22:44,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:22:44,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1557078725, now seen corresponding path program 3 times [2024-06-04 16:22:44,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:22:44,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923170588] [2024-06-04 16:22:44,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:22:44,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:22:44,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:22:45,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:22:45,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:22:45,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923170588] [2024-06-04 16:22:45,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923170588] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:22:45,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:22:45,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 16:22:45,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306051468] [2024-06-04 16:22:45,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:22:45,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 16:22:45,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:22:45,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 16:22:45,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-04 16:22:45,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 66 [2024-06-04 16:22:45,187 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) [2024-06-04 16:22:45,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:22:45,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 66 [2024-06-04 16:22:45,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:22:45,409 INFO L124 PetriNetUnfolderBase]: 438/982 cut-off events. [2024-06-04 16:22:45,409 INFO L125 PetriNetUnfolderBase]: For 26542/26542 co-relation queries the response was YES. [2024-06-04 16:22:45,412 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. [2024-06-04 16:22:45,415 INFO L140 encePairwiseOnDemand]: 52/66 looper letters, 92 selfloop transitions, 34 changer transitions 11/145 dead transitions. [2024-06-04 16:22:45,415 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 145 transitions, 1653 flow [2024-06-04 16:22:45,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 16:22:45,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 16:22:45,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 258 transitions. [2024-06-04 16:22:45,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39090909090909093 [2024-06-04 16:22:45,416 INFO L175 Difference]: Start difference. First operand has 132 places, 116 transitions, 1185 flow. Second operand 10 states and 258 transitions. [2024-06-04 16:22:45,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 145 transitions, 1653 flow [2024-06-04 16:22:45,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 145 transitions, 1611 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-04 16:22:45,438 INFO L231 Difference]: Finished difference. Result has 142 places, 115 transitions, 1277 flow [2024-06-04 16:22:45,439 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} [2024-06-04 16:22:45,439 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 99 predicate places. [2024-06-04 16:22:45,439 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 115 transitions, 1277 flow [2024-06-04 16:22:45,439 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) [2024-06-04 16:22:45,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:22:45,440 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] [2024-06-04 16:22:45,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-04 16:22:45,440 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)] === [2024-06-04 16:22:45,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:22:45,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1205410346, now seen corresponding path program 3 times [2024-06-04 16:22:45,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:22:45,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321027800] [2024-06-04 16:22:45,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:22:45,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:22:45,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:22:45,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:22:45,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:22:45,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321027800] [2024-06-04 16:22:45,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321027800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:22:45,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:22:45,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-04 16:22:45,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421594255] [2024-06-04 16:22:45,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:22:45,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-04 16:22:45,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:22:45,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-04 16:22:45,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-04 16:22:45,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 66 [2024-06-04 16:22:45,641 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) [2024-06-04 16:22:45,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:22:45,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 66 [2024-06-04 16:22:45,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:22:45,836 INFO L124 PetriNetUnfolderBase]: 400/897 cut-off events. [2024-06-04 16:22:45,836 INFO L125 PetriNetUnfolderBase]: For 26545/26545 co-relation queries the response was YES. [2024-06-04 16:22:45,839 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. [2024-06-04 16:22:45,842 INFO L140 encePairwiseOnDemand]: 54/66 looper letters, 88 selfloop transitions, 41 changer transitions 0/137 dead transitions. [2024-06-04 16:22:45,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 137 transitions, 1693 flow [2024-06-04 16:22:45,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 16:22:45,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 16:22:45,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 254 transitions. [2024-06-04 16:22:45,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38484848484848483 [2024-06-04 16:22:45,843 INFO L175 Difference]: Start difference. First operand has 142 places, 115 transitions, 1277 flow. Second operand 10 states and 254 transitions. [2024-06-04 16:22:45,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 137 transitions, 1693 flow [2024-06-04 16:22:45,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 137 transitions, 1565 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-06-04 16:22:45,868 INFO L231 Difference]: Finished difference. Result has 143 places, 120 transitions, 1334 flow [2024-06-04 16:22:45,868 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} [2024-06-04 16:22:45,869 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 100 predicate places. [2024-06-04 16:22:45,869 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 120 transitions, 1334 flow [2024-06-04 16:22:45,869 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) [2024-06-04 16:22:45,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:22:45,869 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] [2024-06-04 16:22:45,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-04 16:22:45,869 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)] === [2024-06-04 16:22:45,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:22:45,870 INFO L85 PathProgramCache]: Analyzing trace with hash 694862718, now seen corresponding path program 1 times [2024-06-04 16:22:45,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:22:45,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710788815] [2024-06-04 16:22:45,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:22:45,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:22:45,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:22:46,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:22:46,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:22:46,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710788815] [2024-06-04 16:22:46,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710788815] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:22:46,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:22:46,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 16:22:46,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993596609] [2024-06-04 16:22:46,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:22:46,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 16:22:46,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:22:46,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 16:22:46,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 16:22:46,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 66 [2024-06-04 16:22:46,054 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) [2024-06-04 16:22:46,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:22:46,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 66 [2024-06-04 16:22:46,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:22:46,285 INFO L124 PetriNetUnfolderBase]: 469/1040 cut-off events. [2024-06-04 16:22:46,285 INFO L125 PetriNetUnfolderBase]: For 31759/31759 co-relation queries the response was YES. [2024-06-04 16:22:46,288 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. [2024-06-04 16:22:46,291 INFO L140 encePairwiseOnDemand]: 55/66 looper letters, 112 selfloop transitions, 34 changer transitions 16/170 dead transitions. [2024-06-04 16:22:46,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 170 transitions, 2153 flow [2024-06-04 16:22:46,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 16:22:46,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 16:22:46,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 278 transitions. [2024-06-04 16:22:46,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4212121212121212 [2024-06-04 16:22:46,292 INFO L175 Difference]: Start difference. First operand has 143 places, 120 transitions, 1334 flow. Second operand 10 states and 278 transitions. [2024-06-04 16:22:46,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 170 transitions, 2153 flow [2024-06-04 16:22:46,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 170 transitions, 2044 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-04 16:22:46,318 INFO L231 Difference]: Finished difference. Result has 150 places, 126 transitions, 1464 flow [2024-06-04 16:22:46,318 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} [2024-06-04 16:22:46,318 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 107 predicate places. [2024-06-04 16:22:46,318 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 126 transitions, 1464 flow [2024-06-04 16:22:46,319 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) [2024-06-04 16:22:46,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:22:46,319 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] [2024-06-04 16:22:46,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-04 16:22:46,319 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)] === [2024-06-04 16:22:46,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:22:46,319 INFO L85 PathProgramCache]: Analyzing trace with hash 426895142, now seen corresponding path program 1 times [2024-06-04 16:22:46,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:22:46,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392639808] [2024-06-04 16:22:46,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:22:46,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:22:46,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:22:46,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:22:46,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:22:46,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392639808] [2024-06-04 16:22:46,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392639808] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:22:46,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:22:46,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 16:22:46,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326289209] [2024-06-04 16:22:46,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:22:46,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 16:22:46,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:22:46,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 16:22:46,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-04 16:22:46,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 66 [2024-06-04 16:22:46,479 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) [2024-06-04 16:22:46,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:22:46,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 66 [2024-06-04 16:22:46,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:22:46,688 INFO L124 PetriNetUnfolderBase]: 440/988 cut-off events. [2024-06-04 16:22:46,689 INFO L125 PetriNetUnfolderBase]: For 28869/28869 co-relation queries the response was YES. [2024-06-04 16:22:46,692 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. [2024-06-04 16:22:46,695 INFO L140 encePairwiseOnDemand]: 55/66 looper letters, 117 selfloop transitions, 22 changer transitions 9/156 dead transitions. [2024-06-04 16:22:46,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 156 transitions, 2047 flow [2024-06-04 16:22:46,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 16:22:46,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 16:22:46,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 241 transitions. [2024-06-04 16:22:46,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4057239057239057 [2024-06-04 16:22:46,696 INFO L175 Difference]: Start difference. First operand has 150 places, 126 transitions, 1464 flow. Second operand 9 states and 241 transitions. [2024-06-04 16:22:46,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 156 transitions, 2047 flow [2024-06-04 16:22:46,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 156 transitions, 1918 flow, removed 37 selfloop flow, removed 9 redundant places. [2024-06-04 16:22:46,724 INFO L231 Difference]: Finished difference. Result has 151 places, 128 transitions, 1453 flow [2024-06-04 16:22:46,724 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} [2024-06-04 16:22:46,725 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 108 predicate places. [2024-06-04 16:22:46,725 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 128 transitions, 1453 flow [2024-06-04 16:22:46,725 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) [2024-06-04 16:22:46,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:22:46,726 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] [2024-06-04 16:22:46,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-04 16:22:46,726 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)] === [2024-06-04 16:22:46,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:22:46,726 INFO L85 PathProgramCache]: Analyzing trace with hash 2078829758, now seen corresponding path program 2 times [2024-06-04 16:22:46,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:22:46,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242383744] [2024-06-04 16:22:46,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:22:46,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:22:46,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:22:46,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:22:46,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:22:46,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242383744] [2024-06-04 16:22:46,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242383744] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:22:46,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:22:46,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 16:22:46,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44527768] [2024-06-04 16:22:46,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:22:46,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 16:22:46,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:22:46,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 16:22:46,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-04 16:22:46,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 66 [2024-06-04 16:22:46,903 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) [2024-06-04 16:22:46,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:22:46,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 66 [2024-06-04 16:22:46,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:22:47,159 INFO L124 PetriNetUnfolderBase]: 442/997 cut-off events. [2024-06-04 16:22:47,160 INFO L125 PetriNetUnfolderBase]: For 33299/33299 co-relation queries the response was YES. [2024-06-04 16:22:47,163 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. [2024-06-04 16:22:47,166 INFO L140 encePairwiseOnDemand]: 55/66 looper letters, 113 selfloop transitions, 34 changer transitions 12/167 dead transitions. [2024-06-04 16:22:47,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 167 transitions, 2158 flow [2024-06-04 16:22:47,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 16:22:47,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 16:22:47,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 274 transitions. [2024-06-04 16:22:47,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41515151515151516 [2024-06-04 16:22:47,168 INFO L175 Difference]: Start difference. First operand has 151 places, 128 transitions, 1453 flow. Second operand 10 states and 274 transitions. [2024-06-04 16:22:47,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 167 transitions, 2158 flow [2024-06-04 16:22:47,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 167 transitions, 2082 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-04 16:22:47,199 INFO L231 Difference]: Finished difference. Result has 156 places, 131 transitions, 1558 flow [2024-06-04 16:22:47,199 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} [2024-06-04 16:22:47,200 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 113 predicate places. [2024-06-04 16:22:47,200 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 131 transitions, 1558 flow [2024-06-04 16:22:47,200 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) [2024-06-04 16:22:47,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:22:47,201 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] [2024-06-04 16:22:47,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-04 16:22:47,201 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)] === [2024-06-04 16:22:47,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:22:47,201 INFO L85 PathProgramCache]: Analyzing trace with hash -331109726, now seen corresponding path program 3 times [2024-06-04 16:22:47,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:22:47,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428311411] [2024-06-04 16:22:47,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:22:47,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:22:47,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:22:47,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:22:47,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:22:47,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428311411] [2024-06-04 16:22:47,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428311411] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:22:47,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:22:47,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-04 16:22:47,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605559206] [2024-06-04 16:22:47,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:22:47,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-04 16:22:47,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:22:47,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-04 16:22:47,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-04 16:22:47,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 66 [2024-06-04 16:22:47,394 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) [2024-06-04 16:22:47,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:22:47,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 66 [2024-06-04 16:22:47,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:22:47,615 INFO L124 PetriNetUnfolderBase]: 417/957 cut-off events. [2024-06-04 16:22:47,617 INFO L125 PetriNetUnfolderBase]: For 36047/36047 co-relation queries the response was YES. [2024-06-04 16:22:47,621 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. [2024-06-04 16:22:47,624 INFO L140 encePairwiseOnDemand]: 56/66 looper letters, 106 selfloop transitions, 35 changer transitions 9/158 dead transitions. [2024-06-04 16:22:47,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 158 transitions, 2106 flow [2024-06-04 16:22:47,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 16:22:47,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 16:22:47,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 238 transitions. [2024-06-04 16:22:47,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4006734006734007 [2024-06-04 16:22:47,625 INFO L175 Difference]: Start difference. First operand has 156 places, 131 transitions, 1558 flow. Second operand 9 states and 238 transitions. [2024-06-04 16:22:47,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 158 transitions, 2106 flow [2024-06-04 16:22:47,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 158 transitions, 1985 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-04 16:22:47,659 INFO L231 Difference]: Finished difference. Result has 157 places, 132 transitions, 1550 flow [2024-06-04 16:22:47,660 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} [2024-06-04 16:22:47,660 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 114 predicate places. [2024-06-04 16:22:47,661 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 132 transitions, 1550 flow [2024-06-04 16:22:47,661 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) [2024-06-04 16:22:47,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:22:47,661 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] [2024-06-04 16:22:47,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-04 16:22:47,661 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)] === [2024-06-04 16:22:47,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:22:47,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1344311742, now seen corresponding path program 4 times [2024-06-04 16:22:47,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:22:47,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604366803] [2024-06-04 16:22:47,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:22:47,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:22:47,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:22:47,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:22:47,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:22:47,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604366803] [2024-06-04 16:22:47,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604366803] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:22:47,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:22:47,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 16:22:47,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313306132] [2024-06-04 16:22:47,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:22:47,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 16:22:47,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:22:47,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 16:22:47,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-04 16:22:47,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 66 [2024-06-04 16:22:47,799 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) [2024-06-04 16:22:47,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:22:47,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 66 [2024-06-04 16:22:47,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:22:47,995 INFO L124 PetriNetUnfolderBase]: 368/854 cut-off events. [2024-06-04 16:22:47,996 INFO L125 PetriNetUnfolderBase]: For 26163/26163 co-relation queries the response was YES. [2024-06-04 16:22:47,999 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. [2024-06-04 16:22:48,001 INFO L140 encePairwiseOnDemand]: 57/66 looper letters, 85 selfloop transitions, 17 changer transitions 52/162 dead transitions. [2024-06-04 16:22:48,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 162 transitions, 2037 flow [2024-06-04 16:22:48,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 16:22:48,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 16:22:48,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 241 transitions. [2024-06-04 16:22:48,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4057239057239057 [2024-06-04 16:22:48,002 INFO L175 Difference]: Start difference. First operand has 157 places, 132 transitions, 1550 flow. Second operand 9 states and 241 transitions. [2024-06-04 16:22:48,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 162 transitions, 2037 flow [2024-06-04 16:22:48,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 162 transitions, 1890 flow, removed 39 selfloop flow, removed 8 redundant places. [2024-06-04 16:22:48,033 INFO L231 Difference]: Finished difference. Result has 159 places, 97 transitions, 993 flow [2024-06-04 16:22:48,033 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} [2024-06-04 16:22:48,034 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 116 predicate places. [2024-06-04 16:22:48,034 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 97 transitions, 993 flow [2024-06-04 16:22:48,034 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) [2024-06-04 16:22:48,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:22:48,034 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] [2024-06-04 16:22:48,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-04 16:22:48,035 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)] === [2024-06-04 16:22:48,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:22:48,035 INFO L85 PathProgramCache]: Analyzing trace with hash -728421581, now seen corresponding path program 1 times [2024-06-04 16:22:48,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:22:48,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210540825] [2024-06-04 16:22:48,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:22:48,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:22:48,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:22:48,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:22:48,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:22:48,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210540825] [2024-06-04 16:22:48,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210540825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:22:48,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:22:48,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 16:22:48,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061740674] [2024-06-04 16:22:48,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:22:48,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 16:22:48,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:22:48,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 16:22:48,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-04 16:22:48,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 66 [2024-06-04 16:22:48,177 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) [2024-06-04 16:22:48,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:22:48,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 66 [2024-06-04 16:22:48,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:22:48,322 INFO L124 PetriNetUnfolderBase]: 252/620 cut-off events. [2024-06-04 16:22:48,322 INFO L125 PetriNetUnfolderBase]: For 25376/25376 co-relation queries the response was YES. [2024-06-04 16:22:48,324 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. [2024-06-04 16:22:48,326 INFO L140 encePairwiseOnDemand]: 57/66 looper letters, 77 selfloop transitions, 15 changer transitions 20/120 dead transitions. [2024-06-04 16:22:48,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 120 transitions, 1363 flow [2024-06-04 16:22:48,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 16:22:48,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 16:22:48,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 215 transitions. [2024-06-04 16:22:48,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4071969696969697 [2024-06-04 16:22:48,328 INFO L175 Difference]: Start difference. First operand has 159 places, 97 transitions, 993 flow. Second operand 8 states and 215 transitions. [2024-06-04 16:22:48,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 120 transitions, 1363 flow [2024-06-04 16:22:48,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 120 transitions, 1161 flow, removed 31 selfloop flow, removed 32 redundant places. [2024-06-04 16:22:48,353 INFO L231 Difference]: Finished difference. Result has 133 places, 89 transitions, 788 flow [2024-06-04 16:22:48,353 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} [2024-06-04 16:22:48,355 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 90 predicate places. [2024-06-04 16:22:48,355 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 89 transitions, 788 flow [2024-06-04 16:22:48,356 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) [2024-06-04 16:22:48,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:22:48,356 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] [2024-06-04 16:22:48,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-04 16:22:48,356 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)] === [2024-06-04 16:22:48,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:22:48,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1124081029, now seen corresponding path program 1 times [2024-06-04 16:22:48,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:22:48,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614731116] [2024-06-04 16:22:48,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:22:48,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:22:48,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:22:48,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:22:48,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:22:48,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614731116] [2024-06-04 16:22:48,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614731116] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:22:48,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:22:48,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 16:22:48,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967623527] [2024-06-04 16:22:48,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:22:48,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 16:22:48,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:22:48,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 16:22:48,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-04 16:22:48,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 66 [2024-06-04 16:22:48,476 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) [2024-06-04 16:22:48,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:22:48,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 66 [2024-06-04 16:22:48,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:22:48,600 INFO L124 PetriNetUnfolderBase]: 194/499 cut-off events. [2024-06-04 16:22:48,600 INFO L125 PetriNetUnfolderBase]: For 14032/14032 co-relation queries the response was YES. [2024-06-04 16:22:48,602 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. [2024-06-04 16:22:48,603 INFO L140 encePairwiseOnDemand]: 58/66 looper letters, 36 selfloop transitions, 19 changer transitions 41/104 dead transitions. [2024-06-04 16:22:48,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 104 transitions, 1052 flow [2024-06-04 16:22:48,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 16:22:48,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 16:22:48,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 190 transitions. [2024-06-04 16:22:48,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41125541125541126 [2024-06-04 16:22:48,604 INFO L175 Difference]: Start difference. First operand has 133 places, 89 transitions, 788 flow. Second operand 7 states and 190 transitions. [2024-06-04 16:22:48,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 104 transitions, 1052 flow [2024-06-04 16:22:48,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 104 transitions, 978 flow, removed 15 selfloop flow, removed 14 redundant places. [2024-06-04 16:22:48,618 INFO L231 Difference]: Finished difference. Result has 127 places, 57 transitions, 495 flow [2024-06-04 16:22:48,619 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} [2024-06-04 16:22:48,619 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 84 predicate places. [2024-06-04 16:22:48,619 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 57 transitions, 495 flow [2024-06-04 16:22:48,619 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) [2024-06-04 16:22:48,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:22:48,620 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] [2024-06-04 16:22:48,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-04 16:22:48,620 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)] === [2024-06-04 16:22:48,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:22:48,620 INFO L85 PathProgramCache]: Analyzing trace with hash 221305591, now seen corresponding path program 2 times [2024-06-04 16:22:48,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:22:48,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472231626] [2024-06-04 16:22:48,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:22:48,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:22:48,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:22:48,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:22:48,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:22:48,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472231626] [2024-06-04 16:22:48,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472231626] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:22:48,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:22:48,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 16:22:48,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726449175] [2024-06-04 16:22:48,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:22:48,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 16:22:48,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:22:48,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 16:22:48,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-04 16:22:48,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 66 [2024-06-04 16:22:48,755 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) [2024-06-04 16:22:48,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:22:48,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 66 [2024-06-04 16:22:48,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:22:48,867 INFO L124 PetriNetUnfolderBase]: 139/359 cut-off events. [2024-06-04 16:22:48,868 INFO L125 PetriNetUnfolderBase]: For 12518/12518 co-relation queries the response was YES. [2024-06-04 16:22:48,869 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. [2024-06-04 16:22:48,870 INFO L140 encePairwiseOnDemand]: 57/66 looper letters, 27 selfloop transitions, 3 changer transitions 42/80 dead transitions. [2024-06-04 16:22:48,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 80 transitions, 763 flow [2024-06-04 16:22:48,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-04 16:22:48,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-04 16:22:48,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 232 transitions. [2024-06-04 16:22:48,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39057239057239057 [2024-06-04 16:22:48,871 INFO L175 Difference]: Start difference. First operand has 127 places, 57 transitions, 495 flow. Second operand 9 states and 232 transitions. [2024-06-04 16:22:48,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 80 transitions, 763 flow [2024-06-04 16:22:48,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 80 transitions, 580 flow, removed 36 selfloop flow, removed 33 redundant places. [2024-06-04 16:22:48,878 INFO L231 Difference]: Finished difference. Result has 95 places, 37 transitions, 216 flow [2024-06-04 16:22:48,878 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} [2024-06-04 16:22:48,878 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 52 predicate places. [2024-06-04 16:22:48,878 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 37 transitions, 216 flow [2024-06-04 16:22:48,879 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) [2024-06-04 16:22:48,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:22:48,879 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] [2024-06-04 16:22:48,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-04 16:22:48,879 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)] === [2024-06-04 16:22:48,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:22:48,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1914513851, now seen corresponding path program 3 times [2024-06-04 16:22:48,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:22:48,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157976993] [2024-06-04 16:22:48,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:22:48,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:22:48,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:22:49,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:22:49,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:22:49,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157976993] [2024-06-04 16:22:49,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157976993] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:22:49,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:22:49,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 16:22:49,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622712079] [2024-06-04 16:22:49,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:22:49,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 16:22:49,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:22:49,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 16:22:49,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-04 16:22:49,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 66 [2024-06-04 16:22:49,034 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) [2024-06-04 16:22:49,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:22:49,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 66 [2024-06-04 16:22:49,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:22:49,121 INFO L124 PetriNetUnfolderBase]: 47/130 cut-off events. [2024-06-04 16:22:49,121 INFO L125 PetriNetUnfolderBase]: For 2233/2233 co-relation queries the response was YES. [2024-06-04 16:22:49,122 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. [2024-06-04 16:22:49,122 INFO L140 encePairwiseOnDemand]: 58/66 looper letters, 0 selfloop transitions, 0 changer transitions 43/43 dead transitions. [2024-06-04 16:22:49,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 43 transitions, 266 flow [2024-06-04 16:22:49,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 16:22:49,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 16:22:49,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2024-06-04 16:22:49,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-04 16:22:49,127 INFO L175 Difference]: Start difference. First operand has 95 places, 37 transitions, 216 flow. Second operand 8 states and 187 transitions. [2024-06-04 16:22:49,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 43 transitions, 266 flow [2024-06-04 16:22:49,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 43 transitions, 197 flow, removed 21 selfloop flow, removed 27 redundant places. [2024-06-04 16:22:49,128 INFO L231 Difference]: Finished difference. Result has 54 places, 0 transitions, 0 flow [2024-06-04 16:22:49,128 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} [2024-06-04 16:22:49,128 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 11 predicate places. [2024-06-04 16:22:49,128 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 0 transitions, 0 flow [2024-06-04 16:22:49,129 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) [2024-06-04 16:22:49,131 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-04 16:22:49,131 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-04 16:22:49,133 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-04 16:22:49,133 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-04 16:22:49,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-04 16:22:49,133 INFO L445 BasicCegarLoop]: Path program histogram: [6, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2024-06-04 16:22:49,136 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-04 16:22:49,136 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-04 16:22:49,138 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-04 16:22:49,138 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-04 16:22:49,139 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.06 04:22:49 BasicIcfg [2024-06-04 16:22:49,139 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-04 16:22:49,139 INFO L158 Benchmark]: Toolchain (without parser) took 14787.62ms. Allocated memory was 218.1MB in the beginning and 486.5MB in the end (delta: 268.4MB). Free memory was 161.8MB in the beginning and 308.5MB in the end (delta: -146.7MB). Peak memory consumption was 120.7MB. Max. memory is 16.1GB. [2024-06-04 16:22:49,140 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 109.1MB. Free memory is still 71.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-04 16:22:49,140 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 109.1MB. Free memory is still 65.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-04 16:22:49,140 INFO L158 Benchmark]: CACSL2BoogieTranslator took 543.07ms. Allocated memory is still 218.1MB. Free memory was 161.8MB in the beginning and 130.4MB in the end (delta: 31.4MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2024-06-04 16:22:49,141 INFO L158 Benchmark]: Boogie Procedure Inliner took 102.20ms. Allocated memory is still 218.1MB. Free memory was 130.4MB in the beginning and 184.4MB in the end (delta: -54.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-06-04 16:22:49,141 INFO L158 Benchmark]: Boogie Preprocessor took 84.41ms. Allocated memory is still 218.1MB. Free memory was 184.4MB in the beginning and 181.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-04 16:22:49,141 INFO L158 Benchmark]: RCFGBuilder took 571.78ms. Allocated memory is still 218.1MB. Free memory was 181.3MB in the beginning and 131.0MB in the end (delta: 50.3MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2024-06-04 16:22:49,141 INFO L158 Benchmark]: TraceAbstraction took 13481.95ms. Allocated memory was 218.1MB in the beginning and 486.5MB in the end (delta: 268.4MB). Free memory was 130.0MB in the beginning and 308.5MB in the end (delta: -178.5MB). Peak memory consumption was 91.9MB. Max. memory is 16.1GB. [2024-06-04 16:22:49,142 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 0.15ms. Allocated memory is still 109.1MB. Free memory is still 71.9MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.12ms. Allocated memory is still 109.1MB. Free memory is still 65.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 543.07ms. Allocated memory is still 218.1MB. Free memory was 161.8MB in the beginning and 130.4MB in the end (delta: 31.4MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 102.20ms. Allocated memory is still 218.1MB. Free memory was 130.4MB in the beginning and 184.4MB in the end (delta: -54.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 84.41ms. Allocated memory is still 218.1MB. Free memory was 184.4MB in the beginning and 181.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 571.78ms. Allocated memory is still 218.1MB. Free memory was 181.3MB in the beginning and 131.0MB in the end (delta: 50.3MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. * TraceAbstraction took 13481.95ms. Allocated memory was 218.1MB in the beginning and 486.5MB in the end (delta: 268.4MB). Free memory was 130.0MB in the beginning and 308.5MB in the end (delta: -178.5MB). Peak memory consumption was 91.9MB. 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: 13.4s, OverallIterations: 31, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 7.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1162 SdHoareTripleChecker+Valid, 3.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1082 mSDsluCounter, 24 SdHoareTripleChecker+Invalid, 2.7s 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: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 5.2s 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! [2024-06-04 16:22:49,169 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE