./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 --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/13-privatized_27-multiple-protecting2_true.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/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 --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 01:05:30,814 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 01:05:30,862 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 01:05:30,865 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 01:05:30,866 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 01:05:30,878 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 01:05:30,879 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 01:05:30,879 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 01:05:30,880 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 01:05:30,880 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 01:05:30,880 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 01:05:30,880 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 01:05:30,881 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 01:05:30,881 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 01:05:30,881 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 01:05:30,882 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 01:05:30,882 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 01:05:30,882 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 01:05:30,883 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 01:05:30,883 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 01:05:30,883 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 01:05:30,883 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 01:05:30,884 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 01:05:30,884 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 01:05:30,884 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 01:05:30,884 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 01:05:30,885 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 01:05:30,885 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 01:05:30,885 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 01:05:30,885 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 01:05:30,886 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 01:05:30,886 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 01:05:30,886 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:05:30,886 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 01:05:30,886 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 01:05:30,887 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 01:05:30,887 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 01:05:30,887 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 01:05:30,887 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 01:05:30,887 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 01:05:30,888 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 01:05:30,888 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 01:05:30,888 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 01:05:30,888 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-28 01:05:31,028 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 01:05:31,061 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 01:05:31,063 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 01:05:31,064 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 01:05:31,065 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 01:05:31,066 INFO L431 ainManager$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 [2024-06-28 01:05:32,265 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 01:05:32,487 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 01:05:32,488 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i [2024-06-28 01:05:32,499 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5cb66ebe5/dbf216e35af34e9f8cc9806d59c0bb77/FLAG8e97133df [2024-06-28 01:05:32,513 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5cb66ebe5/dbf216e35af34e9f8cc9806d59c0bb77 [2024-06-28 01:05:32,515 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 01:05:32,516 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 01:05:32,516 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/13-privatized_27-multiple-protecting2_true.yml/witness.yml [2024-06-28 01:05:32,599 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 01:05:32,600 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 01:05:32,601 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 01:05:32,601 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 01:05:32,605 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 01:05:32,605 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:05:32" (1/2) ... [2024-06-28 01:05:32,606 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@400d9e77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:05:32, skipping insertion in model container [2024-06-28 01:05:32,606 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 01:05:32" (1/2) ... [2024-06-28 01:05:32,607 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6c568d33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 01:05:32, skipping insertion in model container [2024-06-28 01:05:32,607 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:05:32" (2/2) ... [2024-06-28 01:05:32,607 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@400d9e77 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:05:32, skipping insertion in model container [2024-06-28 01:05:32,607 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:05:32" (2/2) ... [2024-06-28 01:05:32,608 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 01:05:32,701 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 01:05:32,702 INFO L97 edCorrectnessWitness]: Location invariant before [L711-L711] ((((! multithreaded || (mutex2_locked || g2 == 0)) && (! multithreaded || (g1 == 0 || g1 == 1))) && (! multithreaded || (mutex1_locked || g1 == 0))) && (! multithreaded || (__global_lock_locked || ((g1 == 0 || g1 == 1) && (g2 == 0 || g2 == 1))))) && (! multithreaded || (g2 == 0 || g2 == 1)) [2024-06-28 01:05:32,702 INFO L97 edCorrectnessWitness]: Location invariant before [L712-L712] ((((! multithreaded || (mutex2_locked || g2 == 0)) && (! multithreaded || (g1 == 0 || g1 == 1))) && (! multithreaded || (mutex1_locked || g1 == 0))) && (! multithreaded || (__global_lock_locked || ((g1 == 0 || g1 == 1) && (g2 == 0 || g2 == 1))))) && (! multithreaded || (g2 == 0 || g2 == 1)) [2024-06-28 01:05:32,702 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 01:05:32,702 INFO L103 edCorrectnessWitness]: ghost_variable mutex2_locked = 0 [2024-06-28 01:05:32,702 INFO L103 edCorrectnessWitness]: ghost_variable mutex1_locked = 0 [2024-06-28 01:05:32,703 INFO L103 edCorrectnessWitness]: ghost_variable __global_lock_locked = 0 [2024-06-28 01:05:32,703 INFO L106 edCorrectnessWitness]: ghost_update [L701-L701] __global_lock_locked = 1; [2024-06-28 01:05:32,703 INFO L106 edCorrectnessWitness]: ghost_update [L717-L717] __global_lock_locked = 1; [2024-06-28 01:05:32,703 INFO L106 edCorrectnessWitness]: ghost_update [L693-L693] mutex1_locked = 0; [2024-06-28 01:05:32,703 INFO L106 edCorrectnessWitness]: ghost_update [L726-L726] __global_lock_locked = 0; [2024-06-28 01:05:32,703 INFO L106 edCorrectnessWitness]: ghost_update [L712-L712] mutex1_locked = 1; [2024-06-28 01:05:32,703 INFO L106 edCorrectnessWitness]: ghost_update [L692-L692] __global_lock_locked = 0; [2024-06-28 01:05:32,703 INFO L106 edCorrectnessWitness]: ghost_update [L710-L710] multithreaded = 1; [2024-06-28 01:05:32,704 INFO L106 edCorrectnessWitness]: ghost_update [L697-L697] mutex2_locked = 1; [2024-06-28 01:05:32,704 INFO L106 edCorrectnessWitness]: ghost_update [L698-L698] __global_lock_locked = 1; [2024-06-28 01:05:32,704 INFO L106 edCorrectnessWitness]: ghost_update [L686-L686] mutex1_locked = 1; [2024-06-28 01:05:32,704 INFO L106 edCorrectnessWitness]: ghost_update [L715-L715] __global_lock_locked = 0; [2024-06-28 01:05:32,704 INFO L106 edCorrectnessWitness]: ghost_update [L724-L724] __global_lock_locked = 1; [2024-06-28 01:05:32,704 INFO L106 edCorrectnessWitness]: ghost_update [L700-L700] __global_lock_locked = 0; [2024-06-28 01:05:32,704 INFO L106 edCorrectnessWitness]: ghost_update [L703-L703] __global_lock_locked = 0; [2024-06-28 01:05:32,704 INFO L106 edCorrectnessWitness]: ghost_update [L713-L713] __global_lock_locked = 1; [2024-06-28 01:05:32,704 INFO L106 edCorrectnessWitness]: ghost_update [L704-L704] mutex2_locked = 0; [2024-06-28 01:05:32,705 INFO L106 edCorrectnessWitness]: ghost_update [L720-L720] __global_lock_locked = 1; [2024-06-28 01:05:32,705 INFO L106 edCorrectnessWitness]: ghost_update [L719-L719] __global_lock_locked = 0; [2024-06-28 01:05:32,705 INFO L106 edCorrectnessWitness]: ghost_update [L690-L690] __global_lock_locked = 1; [2024-06-28 01:05:32,705 INFO L106 edCorrectnessWitness]: ghost_update [L689-L689] __global_lock_locked = 0; [2024-06-28 01:05:32,705 INFO L106 edCorrectnessWitness]: ghost_update [L727-L727] mutex1_locked = 0; [2024-06-28 01:05:32,705 INFO L106 edCorrectnessWitness]: ghost_update [L716-L716] mutex2_locked = 1; [2024-06-28 01:05:32,705 INFO L106 edCorrectnessWitness]: ghost_update [L687-L687] __global_lock_locked = 1; [2024-06-28 01:05:32,705 INFO L106 edCorrectnessWitness]: ghost_update [L722-L722] __global_lock_locked = 0; [2024-06-28 01:05:32,705 INFO L106 edCorrectnessWitness]: ghost_update [L723-L723] mutex2_locked = 0; [2024-06-28 01:05:32,765 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 01:05:32,927 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i[1097,1110] [2024-06-28 01:05:33,057 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:05:33,073 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 01:05:33,106 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i[1097,1110] 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 [2024-06-28 01:05:33,184 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 01:05:33,219 INFO L206 MainTranslator]: Completed translation [2024-06-28 01:05:33,220 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:05:33 WrapperNode [2024-06-28 01:05:33,220 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 01:05:33,221 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 01:05:33,221 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 01:05:33,221 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 01:05:33,226 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:05:33" (1/1) ... [2024-06-28 01:05:33,253 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:05:33" (1/1) ... [2024-06-28 01:05:33,279 INFO L138 Inliner]: procedures = 163, calls = 54, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 129 [2024-06-28 01:05:33,279 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 01:05:33,281 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 01:05:33,281 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 01:05:33,281 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 01:05:33,289 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:05:33" (1/1) ... [2024-06-28 01:05:33,289 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:05:33" (1/1) ... [2024-06-28 01:05:33,303 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:05:33" (1/1) ... [2024-06-28 01:05:33,316 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]. [2024-06-28 01:05:33,316 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:05:33" (1/1) ... [2024-06-28 01:05:33,316 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:05:33" (1/1) ... [2024-06-28 01:05:33,326 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:05:33" (1/1) ... [2024-06-28 01:05:33,328 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:05:33" (1/1) ... [2024-06-28 01:05:33,329 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:05:33" (1/1) ... [2024-06-28 01:05:33,330 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:05:33" (1/1) ... [2024-06-28 01:05:33,331 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 01:05:33,332 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 01:05:33,332 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 01:05:33,332 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 01:05:33,333 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:05:33" (1/1) ... [2024-06-28 01:05:33,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 01:05:33,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 01:05:33,356 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) [2024-06-28 01:05:33,358 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 [2024-06-28 01:05:33,383 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-06-28 01:05:33,383 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-06-28 01:05:33,383 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-06-28 01:05:33,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 01:05:33,383 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-06-28 01:05:33,384 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-06-28 01:05:33,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 01:05:33,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-28 01:05:33,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-06-28 01:05:33,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-06-28 01:05:33,384 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-06-28 01:05:33,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 01:05:33,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 01:05:33,386 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 01:05:33,490 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 01:05:33,493 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 01:05:33,773 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 01:05:33,773 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 01:05:33,929 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 01:05:33,930 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 01:05:33,934 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:05:33 BoogieIcfgContainer [2024-06-28 01:05:33,934 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 01:05:33,936 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 01:05:33,937 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 01:05:33,940 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 01:05:33,940 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 01:05:32" (1/4) ... [2024-06-28 01:05:33,940 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@111da4ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 01:05:33, skipping insertion in model container [2024-06-28 01:05:33,941 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 01:05:32" (2/4) ... [2024-06-28 01:05:33,941 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@111da4ff and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:05:33, skipping insertion in model container [2024-06-28 01:05:33,941 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 01:05:33" (3/4) ... [2024-06-28 01:05:33,942 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@111da4ff and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 01:05:33, skipping insertion in model container [2024-06-28 01:05:33,942 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 01:05:33" (4/4) ... [2024-06-28 01:05:33,943 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_27-multiple-protecting2_true.i [2024-06-28 01:05:33,956 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 01:05:33,956 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-06-28 01:05:33,957 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 01:05:33,999 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-06-28 01:05:34,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 85 transitions, 184 flow [2024-06-28 01:05:34,083 INFO L124 PetriNetUnfolderBase]: 4/83 cut-off events. [2024-06-28 01:05:34,083 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-06-28 01:05:34,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 83 events. 4/83 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 104 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 79. Up to 2 conditions per place. [2024-06-28 01:05:34,086 INFO L82 GeneralOperation]: Start removeDead. Operand has 88 places, 85 transitions, 184 flow [2024-06-28 01:05:34,090 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 73 transitions, 152 flow [2024-06-28 01:05:34,096 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 01:05:34,104 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;@1f8ba077, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 01:05:34,104 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-28 01:05:34,110 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 01:05:34,110 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 01:05:34,110 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 01:05:34,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:05:34,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 01:05:34,111 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-06-28 01:05:34,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:05:34,144 INFO L85 PathProgramCache]: Analyzing trace with hash 415580344, now seen corresponding path program 1 times [2024-06-28 01:05:34,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:05:34,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860237581] [2024-06-28 01:05:34,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:05:34,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:05:34,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:05:34,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:05:34,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:05:34,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860237581] [2024-06-28 01:05:34,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860237581] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:05:34,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:05:34,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 01:05:34,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367642473] [2024-06-28 01:05:34,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:05:34,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 01:05:34,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:05:34,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 01:05:34,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 01:05:34,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 85 [2024-06-28 01:05:34,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 73 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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) [2024-06-28 01:05:34,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:05:34,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 85 [2024-06-28 01:05:34,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:05:35,209 INFO L124 PetriNetUnfolderBase]: 3516/6217 cut-off events. [2024-06-28 01:05:35,209 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-06-28 01:05:35,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11788 conditions, 6217 events. 3516/6217 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 41475 event pairs, 1157 based on Foata normal form. 306/6470 useless extension candidates. Maximal degree in co-relation 11777. Up to 5139 conditions per place. [2024-06-28 01:05:35,280 INFO L140 encePairwiseOnDemand]: 77/85 looper letters, 67 selfloop transitions, 3 changer transitions 0/97 dead transitions. [2024-06-28 01:05:35,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 97 transitions, 343 flow [2024-06-28 01:05:35,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 01:05:35,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 01:05:35,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 174 transitions. [2024-06-28 01:05:35,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6823529411764706 [2024-06-28 01:05:35,292 INFO L175 Difference]: Start difference. First operand has 77 places, 73 transitions, 152 flow. Second operand 3 states and 174 transitions. [2024-06-28 01:05:35,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 97 transitions, 343 flow [2024-06-28 01:05:35,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 97 transitions, 340 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 01:05:35,301 INFO L231 Difference]: Finished difference. Result has 78 places, 72 transitions, 165 flow [2024-06-28 01:05:35,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=165, PETRI_PLACES=78, PETRI_TRANSITIONS=72} [2024-06-28 01:05:35,306 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 1 predicate places. [2024-06-28 01:05:35,307 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 72 transitions, 165 flow [2024-06-28 01:05:35,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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) [2024-06-28 01:05:35,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:05:35,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:05:35,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 01:05:35,308 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-06-28 01:05:35,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:05:35,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1640300315, now seen corresponding path program 1 times [2024-06-28 01:05:35,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:05:35,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375802708] [2024-06-28 01:05:35,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:05:35,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:05:35,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:05:35,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:05:35,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:05:35,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375802708] [2024-06-28 01:05:35,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375802708] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:05:35,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:05:35,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 01:05:35,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216979544] [2024-06-28 01:05:35,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:05:35,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:05:35,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:05:35,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:05:35,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:05:35,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 85 [2024-06-28 01:05:35,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 72 transitions, 165 flow. Second operand has 6 states, 6 states have (on average 32.333333333333336) internal successors, (194), 6 states have internal predecessors, (194), 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) [2024-06-28 01:05:35,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:05:35,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 85 [2024-06-28 01:05:35,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:05:36,212 INFO L124 PetriNetUnfolderBase]: 4311/7867 cut-off events. [2024-06-28 01:05:36,212 INFO L125 PetriNetUnfolderBase]: For 576/576 co-relation queries the response was YES. [2024-06-28 01:05:36,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15396 conditions, 7867 events. 4311/7867 cut-off events. For 576/576 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 56630 event pairs, 305 based on Foata normal form. 28/7787 useless extension candidates. Maximal degree in co-relation 15383. Up to 5023 conditions per place. [2024-06-28 01:05:36,246 INFO L140 encePairwiseOnDemand]: 75/85 looper letters, 142 selfloop transitions, 14 changer transitions 0/182 dead transitions. [2024-06-28 01:05:36,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 182 transitions, 712 flow [2024-06-28 01:05:36,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:05:36,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:05:36,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 379 transitions. [2024-06-28 01:05:36,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6369747899159663 [2024-06-28 01:05:36,249 INFO L175 Difference]: Start difference. First operand has 78 places, 72 transitions, 165 flow. Second operand 7 states and 379 transitions. [2024-06-28 01:05:36,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 182 transitions, 712 flow [2024-06-28 01:05:36,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 182 transitions, 708 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 01:05:36,252 INFO L231 Difference]: Finished difference. Result has 86 places, 81 transitions, 251 flow [2024-06-28 01:05:36,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=251, PETRI_PLACES=86, PETRI_TRANSITIONS=81} [2024-06-28 01:05:36,253 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 9 predicate places. [2024-06-28 01:05:36,253 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 81 transitions, 251 flow [2024-06-28 01:05:36,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 32.333333333333336) internal successors, (194), 6 states have internal predecessors, (194), 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) [2024-06-28 01:05:36,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:05:36,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:05:36,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 01:05:36,254 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-06-28 01:05:36,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:05:36,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1804400740, now seen corresponding path program 1 times [2024-06-28 01:05:36,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:05:36,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415807657] [2024-06-28 01:05:36,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:05:36,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:05:36,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:05:36,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:05:36,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:05:36,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415807657] [2024-06-28 01:05:36,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415807657] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:05:36,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:05:36,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:05:36,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495786920] [2024-06-28 01:05:36,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:05:36,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 01:05:36,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:05:36,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 01:05:36,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 01:05:36,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 85 [2024-06-28 01:05:36,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 81 transitions, 251 flow. Second operand has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 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) [2024-06-28 01:05:36,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:05:36,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 85 [2024-06-28 01:05:36,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:05:37,135 INFO L124 PetriNetUnfolderBase]: 4509/8827 cut-off events. [2024-06-28 01:05:37,135 INFO L125 PetriNetUnfolderBase]: For 3524/3526 co-relation queries the response was YES. [2024-06-28 01:05:37,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18549 conditions, 8827 events. 4509/8827 cut-off events. For 3524/3526 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 67672 event pairs, 2289 based on Foata normal form. 23/8583 useless extension candidates. Maximal degree in co-relation 18530. Up to 5469 conditions per place. [2024-06-28 01:05:37,186 INFO L140 encePairwiseOnDemand]: 76/85 looper letters, 122 selfloop transitions, 15 changer transitions 0/164 dead transitions. [2024-06-28 01:05:37,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 164 transitions, 738 flow [2024-06-28 01:05:37,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:05:37,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:05:37,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 286 transitions. [2024-06-28 01:05:37,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6729411764705883 [2024-06-28 01:05:37,189 INFO L175 Difference]: Start difference. First operand has 86 places, 81 transitions, 251 flow. Second operand 5 states and 286 transitions. [2024-06-28 01:05:37,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 164 transitions, 738 flow [2024-06-28 01:05:37,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 164 transitions, 728 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-28 01:05:37,201 INFO L231 Difference]: Finished difference. Result has 92 places, 92 transitions, 350 flow [2024-06-28 01:05:37,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=350, PETRI_PLACES=92, PETRI_TRANSITIONS=92} [2024-06-28 01:05:37,204 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 15 predicate places. [2024-06-28 01:05:37,204 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 92 transitions, 350 flow [2024-06-28 01:05:37,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 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) [2024-06-28 01:05:37,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:05:37,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:05:37,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 01:05:37,205 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-06-28 01:05:37,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:05:37,205 INFO L85 PathProgramCache]: Analyzing trace with hash -842140066, now seen corresponding path program 1 times [2024-06-28 01:05:37,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:05:37,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494189641] [2024-06-28 01:05:37,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:05:37,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:05:37,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:05:37,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:05:37,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:05:37,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494189641] [2024-06-28 01:05:37,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494189641] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:05:37,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:05:37,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 01:05:37,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222333056] [2024-06-28 01:05:37,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:05:37,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 01:05:37,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:05:37,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 01:05:37,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 01:05:37,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 85 [2024-06-28 01:05:37,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 92 transitions, 350 flow. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 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) [2024-06-28 01:05:37,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:05:37,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 85 [2024-06-28 01:05:37,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:05:38,316 INFO L124 PetriNetUnfolderBase]: 6233/11074 cut-off events. [2024-06-28 01:05:38,316 INFO L125 PetriNetUnfolderBase]: For 6267/6313 co-relation queries the response was YES. [2024-06-28 01:05:38,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26450 conditions, 11074 events. 6233/11074 cut-off events. For 6267/6313 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 79572 event pairs, 3382 based on Foata normal form. 137/10849 useless extension candidates. Maximal degree in co-relation 26427. Up to 6285 conditions per place. [2024-06-28 01:05:38,371 INFO L140 encePairwiseOnDemand]: 71/85 looper letters, 118 selfloop transitions, 24 changer transitions 5/168 dead transitions. [2024-06-28 01:05:38,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 168 transitions, 915 flow [2024-06-28 01:05:38,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:05:38,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:05:38,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 247 transitions. [2024-06-28 01:05:38,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5811764705882353 [2024-06-28 01:05:38,373 INFO L175 Difference]: Start difference. First operand has 92 places, 92 transitions, 350 flow. Second operand 5 states and 247 transitions. [2024-06-28 01:05:38,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 168 transitions, 915 flow [2024-06-28 01:05:38,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 168 transitions, 911 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-28 01:05:38,382 INFO L231 Difference]: Finished difference. Result has 100 places, 105 transitions, 519 flow [2024-06-28 01:05:38,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=519, PETRI_PLACES=100, PETRI_TRANSITIONS=105} [2024-06-28 01:05:38,382 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 23 predicate places. [2024-06-28 01:05:38,383 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 105 transitions, 519 flow [2024-06-28 01:05:38,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 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) [2024-06-28 01:05:38,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:05:38,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:05:38,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 01:05:38,383 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-06-28 01:05:38,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:05:38,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1043928311, now seen corresponding path program 1 times [2024-06-28 01:05:38,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:05:38,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10527413] [2024-06-28 01:05:38,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:05:38,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:05:38,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:05:38,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:05:38,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:05:38,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10527413] [2024-06-28 01:05:38,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10527413] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:05:38,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:05:38,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:05:38,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903082068] [2024-06-28 01:05:38,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:05:38,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:05:38,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:05:38,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:05:38,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:05:38,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 85 [2024-06-28 01:05:38,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 105 transitions, 519 flow. Second operand has 9 states, 9 states have (on average 33.44444444444444) internal successors, (301), 9 states have internal predecessors, (301), 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) [2024-06-28 01:05:38,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:05:38,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 85 [2024-06-28 01:05:38,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:05:40,228 INFO L124 PetriNetUnfolderBase]: 7373/14028 cut-off events. [2024-06-28 01:05:40,228 INFO L125 PetriNetUnfolderBase]: For 12537/12779 co-relation queries the response was YES. [2024-06-28 01:05:40,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36101 conditions, 14028 events. 7373/14028 cut-off events. For 12537/12779 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 112793 event pairs, 847 based on Foata normal form. 56/14074 useless extension candidates. Maximal degree in co-relation 36072. Up to 4763 conditions per place. [2024-06-28 01:05:40,340 INFO L140 encePairwiseOnDemand]: 61/85 looper letters, 236 selfloop transitions, 53 changer transitions 0/319 dead transitions. [2024-06-28 01:05:40,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 319 transitions, 1890 flow [2024-06-28 01:05:40,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 01:05:40,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 01:05:40,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 534 transitions. [2024-06-28 01:05:40,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6980392156862745 [2024-06-28 01:05:40,343 INFO L175 Difference]: Start difference. First operand has 100 places, 105 transitions, 519 flow. Second operand 9 states and 534 transitions. [2024-06-28 01:05:40,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 319 transitions, 1890 flow [2024-06-28 01:05:40,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 319 transitions, 1886 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-28 01:05:40,370 INFO L231 Difference]: Finished difference. Result has 115 places, 141 transitions, 935 flow [2024-06-28 01:05:40,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=515, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=935, PETRI_PLACES=115, PETRI_TRANSITIONS=141} [2024-06-28 01:05:40,372 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 38 predicate places. [2024-06-28 01:05:40,372 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 141 transitions, 935 flow [2024-06-28 01:05:40,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 33.44444444444444) internal successors, (301), 9 states have internal predecessors, (301), 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) [2024-06-28 01:05:40,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:05:40,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:05:40,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 01:05:40,373 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-06-28 01:05:40,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:05:40,374 INFO L85 PathProgramCache]: Analyzing trace with hash -489416585, now seen corresponding path program 2 times [2024-06-28 01:05:40,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:05:40,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873987639] [2024-06-28 01:05:40,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:05:40,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:05:40,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:05:40,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:05:40,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:05:40,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873987639] [2024-06-28 01:05:40,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873987639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:05:40,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:05:40,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:05:40,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585666784] [2024-06-28 01:05:40,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:05:40,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:05:40,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:05:40,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:05:40,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:05:40,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 85 [2024-06-28 01:05:40,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 141 transitions, 935 flow. Second operand has 7 states, 7 states have (on average 33.857142857142854) internal successors, (237), 7 states have internal predecessors, (237), 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) [2024-06-28 01:05:40,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:05:40,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 85 [2024-06-28 01:05:40,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:05:42,897 INFO L124 PetriNetUnfolderBase]: 11116/22097 cut-off events. [2024-06-28 01:05:42,898 INFO L125 PetriNetUnfolderBase]: For 42716/43107 co-relation queries the response was YES. [2024-06-28 01:05:42,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69723 conditions, 22097 events. 11116/22097 cut-off events. For 42716/43107 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 196455 event pairs, 4243 based on Foata normal form. 66/22142 useless extension candidates. Maximal degree in co-relation 69685. Up to 11829 conditions per place. [2024-06-28 01:05:43,076 INFO L140 encePairwiseOnDemand]: 72/85 looper letters, 262 selfloop transitions, 69 changer transitions 0/361 dead transitions. [2024-06-28 01:05:43,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 361 transitions, 2899 flow [2024-06-28 01:05:43,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:05:43,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:05:43,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 413 transitions. [2024-06-28 01:05:43,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6941176470588235 [2024-06-28 01:05:43,078 INFO L175 Difference]: Start difference. First operand has 115 places, 141 transitions, 935 flow. Second operand 7 states and 413 transitions. [2024-06-28 01:05:43,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 361 transitions, 2899 flow [2024-06-28 01:05:43,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 361 transitions, 2837 flow, removed 31 selfloop flow, removed 0 redundant places. [2024-06-28 01:05:43,194 INFO L231 Difference]: Finished difference. Result has 126 places, 199 transitions, 1717 flow [2024-06-28 01:05:43,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=905, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1717, PETRI_PLACES=126, PETRI_TRANSITIONS=199} [2024-06-28 01:05:43,197 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 49 predicate places. [2024-06-28 01:05:43,197 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 199 transitions, 1717 flow [2024-06-28 01:05:43,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 33.857142857142854) internal successors, (237), 7 states have internal predecessors, (237), 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) [2024-06-28 01:05:43,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:05:43,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:05:43,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 01:05:43,198 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-06-28 01:05:43,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:05:43,199 INFO L85 PathProgramCache]: Analyzing trace with hash 304966457, now seen corresponding path program 3 times [2024-06-28 01:05:43,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:05:43,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100811357] [2024-06-28 01:05:43,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:05:43,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:05:43,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:05:43,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:05:43,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:05:43,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100811357] [2024-06-28 01:05:43,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100811357] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:05:43,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:05:43,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 01:05:43,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824558775] [2024-06-28 01:05:43,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:05:43,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 01:05:43,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:05:43,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 01:05:43,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 01:05:43,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 85 [2024-06-28 01:05:43,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 199 transitions, 1717 flow. Second operand has 9 states, 9 states have (on average 33.44444444444444) internal successors, (301), 9 states have internal predecessors, (301), 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) [2024-06-28 01:05:43,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:05:43,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 85 [2024-06-28 01:05:43,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:05:47,655 INFO L124 PetriNetUnfolderBase]: 16632/32605 cut-off events. [2024-06-28 01:05:47,656 INFO L125 PetriNetUnfolderBase]: For 90898/91450 co-relation queries the response was YES. [2024-06-28 01:05:47,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111425 conditions, 32605 events. 16632/32605 cut-off events. For 90898/91450 co-relation queries the response was YES. Maximal size of possible extension queue 816. Compared 306629 event pairs, 5661 based on Foata normal form. 96/32673 useless extension candidates. Maximal degree in co-relation 111380. Up to 15988 conditions per place. [2024-06-28 01:05:47,878 INFO L140 encePairwiseOnDemand]: 61/85 looper letters, 350 selfloop transitions, 154 changer transitions 0/534 dead transitions. [2024-06-28 01:05:47,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 534 transitions, 4925 flow [2024-06-28 01:05:47,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 01:05:47,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 01:05:47,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 651 transitions. [2024-06-28 01:05:47,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6962566844919786 [2024-06-28 01:05:47,881 INFO L175 Difference]: Start difference. First operand has 126 places, 199 transitions, 1717 flow. Second operand 11 states and 651 transitions. [2024-06-28 01:05:47,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 534 transitions, 4925 flow [2024-06-28 01:05:48,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 534 transitions, 4803 flow, removed 61 selfloop flow, removed 0 redundant places. [2024-06-28 01:05:48,211 INFO L231 Difference]: Finished difference. Result has 145 places, 330 transitions, 3625 flow [2024-06-28 01:05:48,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=1667, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3625, PETRI_PLACES=145, PETRI_TRANSITIONS=330} [2024-06-28 01:05:48,212 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 68 predicate places. [2024-06-28 01:05:48,212 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 330 transitions, 3625 flow [2024-06-28 01:05:48,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 33.44444444444444) internal successors, (301), 9 states have internal predecessors, (301), 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) [2024-06-28 01:05:48,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:05:48,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:05:48,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 01:05:48,213 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-06-28 01:05:48,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:05:48,214 INFO L85 PathProgramCache]: Analyzing trace with hash -369869191, now seen corresponding path program 4 times [2024-06-28 01:05:48,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:05:48,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502464378] [2024-06-28 01:05:48,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:05:48,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:05:48,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:05:48,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:05:48,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:05:48,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502464378] [2024-06-28 01:05:48,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502464378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:05:48,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:05:48,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:05:48,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997374583] [2024-06-28 01:05:48,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:05:48,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:05:48,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:05:48,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:05:48,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:05:48,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 85 [2024-06-28 01:05:48,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 330 transitions, 3625 flow. Second operand has 7 states, 7 states have (on average 33.857142857142854) internal successors, (237), 7 states have internal predecessors, (237), 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) [2024-06-28 01:05:48,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:05:48,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 85 [2024-06-28 01:05:48,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:05:53,488 INFO L124 PetriNetUnfolderBase]: 18746/37239 cut-off events. [2024-06-28 01:05:53,488 INFO L125 PetriNetUnfolderBase]: For 186191/186755 co-relation queries the response was YES. [2024-06-28 01:05:53,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151412 conditions, 37239 events. 18746/37239 cut-off events. For 186191/186755 co-relation queries the response was YES. Maximal size of possible extension queue 946. Compared 360485 event pairs, 8292 based on Foata normal form. 56/37265 useless extension candidates. Maximal degree in co-relation 151356. Up to 25792 conditions per place. [2024-06-28 01:05:54,058 INFO L140 encePairwiseOnDemand]: 72/85 looper letters, 414 selfloop transitions, 59 changer transitions 0/503 dead transitions. [2024-06-28 01:05:54,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 503 transitions, 5832 flow [2024-06-28 01:05:54,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:05:54,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:05:54,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 413 transitions. [2024-06-28 01:05:54,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6941176470588235 [2024-06-28 01:05:54,061 INFO L175 Difference]: Start difference. First operand has 145 places, 330 transitions, 3625 flow. Second operand 7 states and 413 transitions. [2024-06-28 01:05:54,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 503 transitions, 5832 flow [2024-06-28 01:05:54,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 503 transitions, 5726 flow, removed 53 selfloop flow, removed 0 redundant places. [2024-06-28 01:05:54,768 INFO L231 Difference]: Finished difference. Result has 156 places, 355 transitions, 4053 flow [2024-06-28 01:05:54,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=3523, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4053, PETRI_PLACES=156, PETRI_TRANSITIONS=355} [2024-06-28 01:05:54,769 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 79 predicate places. [2024-06-28 01:05:54,769 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 355 transitions, 4053 flow [2024-06-28 01:05:54,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 33.857142857142854) internal successors, (237), 7 states have internal predecessors, (237), 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) [2024-06-28 01:05:54,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:05:54,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:05:54,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 01:05:54,770 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-06-28 01:05:54,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:05:54,771 INFO L85 PathProgramCache]: Analyzing trace with hash -821241143, now seen corresponding path program 5 times [2024-06-28 01:05:54,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:05:54,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831083559] [2024-06-28 01:05:54,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:05:54,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:05:54,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:05:54,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:05:54,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:05:54,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831083559] [2024-06-28 01:05:54,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831083559] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:05:54,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:05:54,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:05:54,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801514593] [2024-06-28 01:05:54,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:05:54,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:05:54,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:05:54,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:05:54,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:05:54,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 85 [2024-06-28 01:05:54,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 355 transitions, 4053 flow. Second operand has 7 states, 7 states have (on average 33.857142857142854) internal successors, (237), 7 states have internal predecessors, (237), 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) [2024-06-28 01:05:54,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:05:54,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 85 [2024-06-28 01:05:54,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:06:01,556 INFO L124 PetriNetUnfolderBase]: 22445/44738 cut-off events. [2024-06-28 01:06:01,556 INFO L125 PetriNetUnfolderBase]: For 255907/256730 co-relation queries the response was YES. [2024-06-28 01:06:01,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185284 conditions, 44738 events. 22445/44738 cut-off events. For 255907/256730 co-relation queries the response was YES. Maximal size of possible extension queue 1151. Compared 445800 event pairs, 10216 based on Foata normal form. 152/44849 useless extension candidates. Maximal degree in co-relation 185221. Up to 29497 conditions per place. [2024-06-28 01:06:02,068 INFO L140 encePairwiseOnDemand]: 72/85 looper letters, 458 selfloop transitions, 88 changer transitions 0/576 dead transitions. [2024-06-28 01:06:02,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 576 transitions, 7078 flow [2024-06-28 01:06:02,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:06:02,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:06:02,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 414 transitions. [2024-06-28 01:06:02,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6957983193277311 [2024-06-28 01:06:02,071 INFO L175 Difference]: Start difference. First operand has 156 places, 355 transitions, 4053 flow. Second operand 7 states and 414 transitions. [2024-06-28 01:06:02,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 576 transitions, 7078 flow [2024-06-28 01:06:03,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 576 transitions, 6948 flow, removed 65 selfloop flow, removed 0 redundant places. [2024-06-28 01:06:03,249 INFO L231 Difference]: Finished difference. Result has 167 places, 410 transitions, 5090 flow [2024-06-28 01:06:03,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=3989, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5090, PETRI_PLACES=167, PETRI_TRANSITIONS=410} [2024-06-28 01:06:03,250 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 90 predicate places. [2024-06-28 01:06:03,250 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 410 transitions, 5090 flow [2024-06-28 01:06:03,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 33.857142857142854) internal successors, (237), 7 states have internal predecessors, (237), 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) [2024-06-28 01:06:03,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:06:03,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:06:03,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 01:06:03,251 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-06-28 01:06:03,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:06:03,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1793438909, now seen corresponding path program 6 times [2024-06-28 01:06:03,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:06:03,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286440070] [2024-06-28 01:06:03,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:06:03,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:06:03,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:06:03,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:06:03,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:06:03,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286440070] [2024-06-28 01:06:03,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286440070] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:06:03,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:06:03,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:06:03,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673863976] [2024-06-28 01:06:03,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:06:03,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:06:03,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:06:03,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:06:03,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:06:03,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 85 [2024-06-28 01:06:03,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 410 transitions, 5090 flow. Second operand has 7 states, 7 states have (on average 33.857142857142854) internal successors, (237), 7 states have internal predecessors, (237), 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) [2024-06-28 01:06:03,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:06:03,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 85 [2024-06-28 01:06:03,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:06:11,376 INFO L124 PetriNetUnfolderBase]: 26740/53264 cut-off events. [2024-06-28 01:06:11,376 INFO L125 PetriNetUnfolderBase]: For 360359/361495 co-relation queries the response was YES. [2024-06-28 01:06:12,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227365 conditions, 53264 events. 26740/53264 cut-off events. For 360359/361495 co-relation queries the response was YES. Maximal size of possible extension queue 1382. Compared 545247 event pairs, 10739 based on Foata normal form. 239/53448 useless extension candidates. Maximal degree in co-relation 227295. Up to 30707 conditions per place. [2024-06-28 01:06:12,343 INFO L140 encePairwiseOnDemand]: 72/85 looper letters, 453 selfloop transitions, 135 changer transitions 0/618 dead transitions. [2024-06-28 01:06:12,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 618 transitions, 8233 flow [2024-06-28 01:06:12,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:06:12,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:06:12,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 410 transitions. [2024-06-28 01:06:12,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6890756302521008 [2024-06-28 01:06:12,347 INFO L175 Difference]: Start difference. First operand has 167 places, 410 transitions, 5090 flow. Second operand 7 states and 410 transitions. [2024-06-28 01:06:12,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 618 transitions, 8233 flow [2024-06-28 01:06:13,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 618 transitions, 8033 flow, removed 100 selfloop flow, removed 0 redundant places. [2024-06-28 01:06:13,987 INFO L231 Difference]: Finished difference. Result has 178 places, 465 transitions, 6306 flow [2024-06-28 01:06:13,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=4986, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6306, PETRI_PLACES=178, PETRI_TRANSITIONS=465} [2024-06-28 01:06:13,989 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 101 predicate places. [2024-06-28 01:06:13,989 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 465 transitions, 6306 flow [2024-06-28 01:06:13,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 33.857142857142854) internal successors, (237), 7 states have internal predecessors, (237), 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) [2024-06-28 01:06:13,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:06:13,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:06:13,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 01:06:13,991 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-06-28 01:06:13,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:06:13,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1009024219, now seen corresponding path program 1 times [2024-06-28 01:06:13,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:06:13,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840504250] [2024-06-28 01:06:13,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:06:13,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:06:14,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:06:14,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:06:14,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:06:14,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840504250] [2024-06-28 01:06:14,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840504250] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:06:14,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:06:14,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:06:14,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003845147] [2024-06-28 01:06:14,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:06:14,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:06:14,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:06:14,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:06:14,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:06:14,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 85 [2024-06-28 01:06:14,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 465 transitions, 6306 flow. Second operand has 6 states, 6 states have (on average 36.166666666666664) internal successors, (217), 6 states have internal predecessors, (217), 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) [2024-06-28 01:06:14,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:06:14,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 85 [2024-06-28 01:06:14,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:06:17,550 INFO L124 PetriNetUnfolderBase]: 9263/20790 cut-off events. [2024-06-28 01:06:17,551 INFO L125 PetriNetUnfolderBase]: For 174870/175266 co-relation queries the response was YES. [2024-06-28 01:06:17,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85837 conditions, 20790 events. 9263/20790 cut-off events. For 174870/175266 co-relation queries the response was YES. Maximal size of possible extension queue 607. Compared 199066 event pairs, 1805 based on Foata normal form. 766/21463 useless extension candidates. Maximal degree in co-relation 85760. Up to 6139 conditions per place. [2024-06-28 01:06:17,758 INFO L140 encePairwiseOnDemand]: 64/85 looper letters, 358 selfloop transitions, 187 changer transitions 0/576 dead transitions. [2024-06-28 01:06:17,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 576 transitions, 8412 flow [2024-06-28 01:06:17,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 01:06:17,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 01:06:17,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 289 transitions. [2024-06-28 01:06:17,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.68 [2024-06-28 01:06:17,760 INFO L175 Difference]: Start difference. First operand has 178 places, 465 transitions, 6306 flow. Second operand 5 states and 289 transitions. [2024-06-28 01:06:17,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 576 transitions, 8412 flow [2024-06-28 01:06:18,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 576 transitions, 7881 flow, removed 240 selfloop flow, removed 1 redundant places. [2024-06-28 01:06:18,190 INFO L231 Difference]: Finished difference. Result has 183 places, 428 transitions, 5874 flow [2024-06-28 01:06:18,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=3862, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=5874, PETRI_PLACES=183, PETRI_TRANSITIONS=428} [2024-06-28 01:06:18,191 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 106 predicate places. [2024-06-28 01:06:18,191 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 428 transitions, 5874 flow [2024-06-28 01:06:18,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.166666666666664) internal successors, (217), 6 states have internal predecessors, (217), 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) [2024-06-28 01:06:18,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:06:18,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 01:06:18,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 01:06:18,192 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-06-28 01:06:18,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:06:18,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1639794683, now seen corresponding path program 1 times [2024-06-28 01:06:18,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:06:18,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711827729] [2024-06-28 01:06:18,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:06:18,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:06:18,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:06:18,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:06:18,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:06:18,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711827729] [2024-06-28 01:06:18,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711827729] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:06:18,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:06:18,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:06:18,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838564022] [2024-06-28 01:06:18,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:06:18,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 01:06:18,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:06:18,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 01:06:18,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 01:06:18,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 85 [2024-06-28 01:06:18,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 428 transitions, 5874 flow. Second operand has 6 states, 6 states have (on average 36.5) internal successors, (219), 6 states have internal predecessors, (219), 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) [2024-06-28 01:06:18,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:06:18,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 85 [2024-06-28 01:06:18,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:06:20,657 INFO L124 PetriNetUnfolderBase]: 5181/13346 cut-off events. [2024-06-28 01:06:20,658 INFO L125 PetriNetUnfolderBase]: For 124508/124834 co-relation queries the response was YES. [2024-06-28 01:06:20,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59841 conditions, 13346 events. 5181/13346 cut-off events. For 124508/124834 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 129517 event pairs, 1353 based on Foata normal form. 1162/14425 useless extension candidates. Maximal degree in co-relation 59761. Up to 4331 conditions per place. [2024-06-28 01:06:20,751 INFO L140 encePairwiseOnDemand]: 67/85 looper letters, 332 selfloop transitions, 151 changer transitions 10/524 dead transitions. [2024-06-28 01:06:20,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 524 transitions, 7897 flow [2024-06-28 01:06:20,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 01:06:20,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 01:06:20,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 325 transitions. [2024-06-28 01:06:20,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6372549019607843 [2024-06-28 01:06:20,753 INFO L175 Difference]: Start difference. First operand has 183 places, 428 transitions, 5874 flow. Second operand 6 states and 325 transitions. [2024-06-28 01:06:20,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 524 transitions, 7897 flow [2024-06-28 01:06:20,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 524 transitions, 7865 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-06-28 01:06:20,985 INFO L231 Difference]: Finished difference. Result has 187 places, 441 transitions, 6305 flow [2024-06-28 01:06:20,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=5506, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6305, PETRI_PLACES=187, PETRI_TRANSITIONS=441} [2024-06-28 01:06:20,986 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 110 predicate places. [2024-06-28 01:06:20,986 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 441 transitions, 6305 flow [2024-06-28 01:06:20,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.5) internal successors, (219), 6 states have internal predecessors, (219), 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) [2024-06-28 01:06:20,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:06:20,987 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] [2024-06-28 01:06:20,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 01:06:20,987 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-06-28 01:06:20,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:06:20,988 INFO L85 PathProgramCache]: Analyzing trace with hash 632084837, now seen corresponding path program 1 times [2024-06-28 01:06:20,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:06:20,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218805669] [2024-06-28 01:06:20,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:06:20,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:06:20,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 01:06:21,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 01:06:21,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 01:06:21,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218805669] [2024-06-28 01:06:21,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218805669] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 01:06:21,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 01:06:21,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 01:06:21,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978992627] [2024-06-28 01:06:21,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 01:06:21,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 01:06:21,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 01:06:21,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 01:06:21,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 01:06:21,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 85 [2024-06-28 01:06:21,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 441 transitions, 6305 flow. Second operand has 7 states, 7 states have (on average 34.42857142857143) internal successors, (241), 7 states have internal predecessors, (241), 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) [2024-06-28 01:06:21,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 01:06:21,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 85 [2024-06-28 01:06:21,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 01:06:23,949 INFO L124 PetriNetUnfolderBase]: 5979/15788 cut-off events. [2024-06-28 01:06:23,949 INFO L125 PetriNetUnfolderBase]: For 191658/191666 co-relation queries the response was YES. [2024-06-28 01:06:24,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74033 conditions, 15788 events. 5979/15788 cut-off events. For 191658/191666 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 160013 event pairs, 3238 based on Foata normal form. 34/15808 useless extension candidates. Maximal degree in co-relation 73952. Up to 7172 conditions per place. [2024-06-28 01:06:24,089 INFO L140 encePairwiseOnDemand]: 75/85 looper letters, 522 selfloop transitions, 130 changer transitions 0/682 dead transitions. [2024-06-28 01:06:24,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 682 transitions, 10791 flow [2024-06-28 01:06:24,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 01:06:24,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 01:06:24,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 402 transitions. [2024-06-28 01:06:24,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6756302521008404 [2024-06-28 01:06:24,091 INFO L175 Difference]: Start difference. First operand has 187 places, 441 transitions, 6305 flow. Second operand 7 states and 402 transitions. [2024-06-28 01:06:24,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 682 transitions, 10791 flow [2024-06-28 01:06:24,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 682 transitions, 10714 flow, removed 38 selfloop flow, removed 1 redundant places. [2024-06-28 01:06:24,395 INFO L231 Difference]: Finished difference. Result has 197 places, 467 transitions, 7328 flow [2024-06-28 01:06:24,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=6284, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7328, PETRI_PLACES=197, PETRI_TRANSITIONS=467} [2024-06-28 01:06:24,396 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 120 predicate places. [2024-06-28 01:06:24,397 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 467 transitions, 7328 flow [2024-06-28 01:06:24,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 34.42857142857143) internal successors, (241), 7 states have internal predecessors, (241), 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) [2024-06-28 01:06:24,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 01:06:24,397 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] [2024-06-28 01:06:24,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 01:06:24,397 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2024-06-28 01:06:24,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 01:06:24,398 INFO L85 PathProgramCache]: Analyzing trace with hash 66848984, now seen corresponding path program 1 times [2024-06-28 01:06:24,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 01:06:24,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418444747] [2024-06-28 01:06:24,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 01:06:24,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 01:06:24,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat