./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-atomic/lamport.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/lamport.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 958ec4d9 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/pthread-atomic/lamport.i ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/lamport.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-dev-958ec4d-m [2024-02-07 14:21:34,800 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-07 14:21:34,861 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-07 14:21:34,868 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-07 14:21:34,868 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-07 14:21:34,890 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-07 14:21:34,892 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-07 14:21:34,893 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-07 14:21:34,893 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-07 14:21:34,896 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-07 14:21:34,897 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-07 14:21:34,897 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-07 14:21:34,898 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-07 14:21:34,899 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-07 14:21:34,899 INFO L153 SettingsManager]: * Use SBE=true [2024-02-07 14:21:34,899 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-07 14:21:34,899 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-07 14:21:34,900 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-07 14:21:34,900 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-07 14:21:34,900 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-07 14:21:34,901 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-07 14:21:34,901 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-07 14:21:34,901 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-07 14:21:34,902 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-07 14:21:34,902 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-07 14:21:34,902 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-07 14:21:34,902 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-07 14:21:34,902 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-07 14:21:34,903 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-07 14:21:34,903 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-07 14:21:34,904 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-07 14:21:34,904 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-07 14:21:34,904 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:21:34,904 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-07 14:21:34,905 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-07 14:21:34,905 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-07 14:21:34,905 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-07 14:21:34,905 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-07 14:21:34,905 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-07 14:21:34,906 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-07 14:21:34,906 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-07 14:21:34,906 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-07 14:21:34,906 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-07 14:21:34,906 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-07 14:21:35,116 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-07 14:21:35,130 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-07 14:21:35,132 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-07 14:21:35,133 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-07 14:21:35,133 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-07 14:21:35,134 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/lamport.yml/witness.yml [2024-02-07 14:21:35,344 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-07 14:21:35,344 INFO L274 PluginConnector]: CDTParser initialized [2024-02-07 14:21:35,346 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/lamport.i [2024-02-07 14:21:36,454 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-07 14:21:36,717 INFO L384 CDTParser]: Found 1 translation units. [2024-02-07 14:21:36,718 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/lamport.i [2024-02-07 14:21:36,734 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c28514a54/09a9616d9c7842c59c2f3fb5ff63a65a/FLAGd679194ee [2024-02-07 14:21:36,748 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c28514a54/09a9616d9c7842c59c2f3fb5ff63a65a [2024-02-07 14:21:36,749 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-07 14:21:36,750 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-07 14:21:36,751 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-07 14:21:36,752 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-07 14:21:36,756 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-07 14:21:36,757 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:21:35" (1/2) ... [2024-02-07 14:21:36,758 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f743d17 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:21:36, skipping insertion in model container [2024-02-07 14:21:36,758 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:21:35" (1/2) ... [2024-02-07 14:21:36,760 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7d033e3f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:21:36, skipping insertion in model container [2024-02-07 14:21:36,760 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:21:36" (2/2) ... [2024-02-07 14:21:36,760 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f743d17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:21:36, skipping insertion in model container [2024-02-07 14:21:36,760 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:21:36" (2/2) ... [2024-02-07 14:21:36,761 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-07 14:21:37,062 INFO L74 edCorrectnessWitness]: Found the following entries in the witness: [2024-02-07 14:21:37,063 INFO L76 edCorrectnessWitness]: Location invariant before [L780-L780] x == 2 [2024-02-07 14:21:37,063 INFO L76 edCorrectnessWitness]: Location invariant before [L747-L747] (((0 <= y) && (y <= 2)) && (y <= 127)) && ((y == 0 || y == 1) || y == 2) [2024-02-07 14:21:37,063 INFO L76 edCorrectnessWitness]: Location invariant before [L756-L756] (((0 <= y1) && (y1 <= 2)) && (y1 <= 127)) && ((y1 == 0 || y1 == 1) || y1 == 2) [2024-02-07 14:21:37,063 INFO L76 edCorrectnessWitness]: Location invariant before [L782-L782] (((0 <= y) && (y <= 2)) && (y <= 127)) && ((y == 0 || y == 1) || y == 2) [2024-02-07 14:21:37,064 INFO L76 edCorrectnessWitness]: Location invariant before [L713-L713] (((0 <= y1) && (y1 <= 2)) && (y1 <= 127)) && ((y1 == 0 || y1 == 1) || y1 == 2) [2024-02-07 14:21:37,064 INFO L76 edCorrectnessWitness]: Location invariant before [L834-L834] ((0 <= X) && (X <= 1)) && (X == 0 || X == 1) [2024-02-07 14:21:37,064 INFO L76 edCorrectnessWitness]: Location invariant before [L826-L826] (((0 <= y2) && (y2 <= 2)) && (y2 <= 127)) && ((y2 == 0 || y2 == 1) || y2 == 2) [2024-02-07 14:21:37,064 INFO L76 edCorrectnessWitness]: Location invariant after [L712-L712] (((0 <= y) && (y <= 2)) && (y <= 127)) && ((y == 0 || y == 1) || y == 2) [2024-02-07 14:21:37,064 INFO L76 edCorrectnessWitness]: Location invariant before [L739-L739] ((0 <= b2) && (b2 <= 1)) && (b2 == 0 || b2 == 1) [2024-02-07 14:21:37,064 INFO L76 edCorrectnessWitness]: Location invariant before [L800-L800] y == 2 [2024-02-07 14:21:37,064 INFO L76 edCorrectnessWitness]: Location invariant before [L733-L733] (((0 <= x1) && (x1 <= 2)) && (x1 <= 127)) && ((x1 == 0 || x1 == 1) || x1 == 2) [2024-02-07 14:21:37,065 INFO L76 edCorrectnessWitness]: Location invariant before [L802-L802] (((0 <= x) && (x <= 2)) && (x <= 127)) && ((x == 0 || x == 1) || x == 2) [2024-02-07 14:21:37,065 INFO L76 edCorrectnessWitness]: Location invariant before [L777-L777] b2 == 1 [2024-02-07 14:21:37,065 INFO L76 edCorrectnessWitness]: Location invariant after [L834-L834] ((0 <= X) && (X <= 1)) && (X == 0 || X == 1) [2024-02-07 14:21:37,065 INFO L76 edCorrectnessWitness]: Location invariant before [L814-L814] ((0 <= b12) && (b12 <= 1)) && (b12 == 0 || b12 == 1) [2024-02-07 14:21:37,065 INFO L76 edCorrectnessWitness]: Location invariant before [L825-L825] (((0 <= y) && (y <= 2)) && (y <= 127)) && ((y == 0 || y == 1) || y == 2) [2024-02-07 14:21:37,065 INFO L76 edCorrectnessWitness]: Location invariant before [L710-L710] x == 1 [2024-02-07 14:21:37,065 INFO L76 edCorrectnessWitness]: Location invariant after [L802-L802] (((0 <= x) && (x <= 2)) && (x <= 127)) && ((x == 0 || x == 1) || x == 2) [2024-02-07 14:21:37,066 INFO L76 edCorrectnessWitness]: Location invariant before [L730-L730] y == 1 [2024-02-07 14:21:37,066 INFO L76 edCorrectnessWitness]: Location invariant before [L793-L793] (((0 <= y) && (y <= 2)) && (y <= 127)) && ((y == 0 || y == 1) || y == 2) [2024-02-07 14:21:37,066 INFO L76 edCorrectnessWitness]: Location invariant before [L813-L813] ((0 <= b1) && (b1 <= 1)) && (b1 == 0 || b1 == 1) [2024-02-07 14:21:37,066 INFO L76 edCorrectnessWitness]: Location invariant before [L789-L789] (((0 <= y) && (y <= 2)) && (y <= 127)) && ((y == 0 || y == 1) || y == 2) [2024-02-07 14:21:37,066 INFO L76 edCorrectnessWitness]: Location invariant before [L732-L732] (((0 <= x) && (x <= 2)) && (x <= 127)) && ((x == 0 || x == 1) || x == 2) [2024-02-07 14:21:37,066 INFO L76 edCorrectnessWitness]: Location invariant before [L817-L817] (((0 <= y) && (y <= 2)) && (y <= 127)) && ((y == 0 || y == 1) || y == 2) [2024-02-07 14:21:37,067 INFO L76 edCorrectnessWitness]: Location invariant before [L767-L767] y == 0 [2024-02-07 14:21:37,067 INFO L76 edCorrectnessWitness]: Location invariant before [L794-L794] (((0 <= y2) && (y2 <= 2)) && (y2 <= 127)) && ((y2 == 0 || y2 == 1) || y2 == 2) [2024-02-07 14:21:37,067 INFO L76 edCorrectnessWitness]: Location invariant before [L740-L740] ((0 <= b21) && (b21 <= 1)) && (b21 == 0 || b21 == 1) [2024-02-07 14:21:37,067 INFO L76 edCorrectnessWitness]: Location invariant after [L782-L782] (((0 <= y) && (y <= 2)) && (y <= 127)) && ((y == 0 || y == 1) || y == 2) [2024-02-07 14:21:37,067 INFO L76 edCorrectnessWitness]: Location invariant before [L748-L748] (((0 <= y1) && (y1 <= 2)) && (y1 <= 127)) && ((y1 == 0 || y1 == 1) || y1 == 2) [2024-02-07 14:21:37,067 INFO L76 edCorrectnessWitness]: Location invariant before [L770-L770] b1 == 0 [2024-02-07 14:21:37,067 INFO L76 edCorrectnessWitness]: Location invariant before [L790-L790] (((0 <= y2) && (y2 <= 2)) && (y2 <= 127)) && ((y2 == 0 || y2 == 1) || y2 == 2) [2024-02-07 14:21:37,068 INFO L76 edCorrectnessWitness]: Location invariant before [L840-L840] b2 == 0 [2024-02-07 14:21:37,068 INFO L76 edCorrectnessWitness]: Location invariant before [L719-L719] (((0 <= y) && (y <= 2)) && (y <= 127)) && ((y == 0 || y == 1) || y == 2) [2024-02-07 14:21:37,068 INFO L76 edCorrectnessWitness]: Location invariant before [L752-L752] (((0 <= y1) && (y1 <= 2)) && (y1 <= 127)) && ((y1 == 0 || y1 == 1) || y1 == 2) [2024-02-07 14:21:37,068 INFO L76 edCorrectnessWitness]: Location invariant before [L819-L819] ((((((((0 <= y2) && (0 <= x2)) && (y2 <= 2)) && (y2 <= 127)) && (x2 <= 1)) && (x2 <= 127)) && (x2 != 2)) && (x2 == 0 || x2 == 1)) && ((y2 == 0 || y2 == 1) || y2 == 2) [2024-02-07 14:21:37,068 INFO L76 edCorrectnessWitness]: Location invariant before [L834-L834] ((0 <= X) && (X <= 1)) && (X == 0 || X == 1) [2024-02-07 14:21:37,069 INFO L76 edCorrectnessWitness]: Location invariant before [L809-L809] ((0 <= b1) && (b1 <= 1)) && (b1 == 0 || b1 == 1) [2024-02-07 14:21:37,069 INFO L76 edCorrectnessWitness]: Location invariant before [L764-L764] ((0 <= X) && (X <= 1)) && (X == 0 || X == 1) [2024-02-07 14:21:37,070 INFO L76 edCorrectnessWitness]: Location invariant after [L764-L764] ((0 <= X) && (X <= 1)) && (X == 0 || X == 1) [2024-02-07 14:21:37,070 INFO L76 edCorrectnessWitness]: Location invariant before [L837-L837] y == 0 [2024-02-07 14:21:37,070 INFO L76 edCorrectnessWitness]: Location invariant before [L737-L737] b1 == 0 [2024-02-07 14:21:37,070 INFO L76 edCorrectnessWitness]: Location invariant before [L714-L714] (((0 <= y1) && (y1 <= 2)) && (y1 <= 127)) && ((y1 == 0 || y1 == 1) || y1 == 2) [2024-02-07 14:21:37,071 INFO L76 edCorrectnessWitness]: Location invariant before [L755-L755] (((0 <= y) && (y <= 2)) && (y <= 127)) && ((y == 0 || y == 1) || y == 2) [2024-02-07 14:21:37,071 INFO L76 edCorrectnessWitness]: Location invariant before [L751-L751] (((0 <= y) && (y <= 2)) && (y <= 127)) && ((y == 0 || y == 1) || y == 2) [2024-02-07 14:21:37,071 INFO L76 edCorrectnessWitness]: Location invariant before [L717-L717] b1 == 0 [2024-02-07 14:21:37,071 INFO L76 edCorrectnessWitness]: Location invariant before [L724-L724] (((0 <= y1) && (y1 <= 2)) && (y1 <= 127)) && ((y1 == 0 || y1 == 1) || y1 == 2) [2024-02-07 14:21:37,071 INFO L76 edCorrectnessWitness]: Location invariant before [L804-L804] ((((0 <= x2) && (x2 <= 2)) && (x2 <= 127)) && (y2 == 0)) && ((x2 == 0 || x2 == 1) || x2 == 2) [2024-02-07 14:21:37,071 INFO L76 edCorrectnessWitness]: Location invariant before [L807-L807] b2 == 0 [2024-02-07 14:21:37,071 INFO L76 edCorrectnessWitness]: Location invariant after [L809-L809] ((0 <= b1) && (b1 <= 1)) && (b1 == 0 || b1 == 1) [2024-02-07 14:21:37,072 INFO L76 edCorrectnessWitness]: Location invariant after [L739-L739] ((0 <= b2) && (b2 <= 1)) && (b2 == 0 || b2 == 1) [2024-02-07 14:21:37,072 INFO L76 edCorrectnessWitness]: Location invariant before [L787-L787] b2 == 0 [2024-02-07 14:21:37,072 INFO L76 edCorrectnessWitness]: Location invariant before [L712-L712] (((0 <= y) && (y <= 2)) && (y <= 127)) && ((y == 0 || y == 1) || y == 2) [2024-02-07 14:21:37,072 INFO L76 edCorrectnessWitness]: Location invariant before [L764-L764] ((0 <= X) && (X <= 1)) && (X == 0 || X == 1) [2024-02-07 14:21:37,072 INFO L76 edCorrectnessWitness]: Location invariant before [L821-L821] (((0 <= y) && (y <= 2)) && (y <= 127)) && ((y == 0 || y == 1) || y == 2) [2024-02-07 14:21:37,073 INFO L76 edCorrectnessWitness]: Location invariant before [L734-L734] ((((0 <= x1) && (x1 <= 2)) && (x1 <= 127)) && (y1 == 0)) && ((x1 == 0 || x1 == 1) || x1 == 2) [2024-02-07 14:21:37,073 INFO L76 edCorrectnessWitness]: Location invariant before [L803-L803] (((0 <= x2) && (x2 <= 2)) && (x2 <= 127)) && ((x2 == 0 || x2 == 1) || x2 == 2) [2024-02-07 14:21:37,073 INFO L76 edCorrectnessWitness]: Location invariant before [L707-L707] b1 == 1 [2024-02-07 14:21:37,074 INFO L76 edCorrectnessWitness]: Location invariant before [L822-L822] (((0 <= y2) && (y2 <= 2)) && (y2 <= 127)) && ((y2 == 0 || y2 == 1) || y2 == 2) [2024-02-07 14:21:37,074 INFO L76 edCorrectnessWitness]: Location invariant before [L744-L744] ((0 <= b21) && (b21 <= 1)) && (b21 == 0 || b21 == 1) [2024-02-07 14:21:37,074 INFO L76 edCorrectnessWitness]: Location invariant before [L749-L749] ((((((((0 <= y1) && (0 <= x1)) && (y1 <= 2)) && (y1 <= 127)) && (x1 <= 2)) && (x1 <= 127)) && (x1 != 1)) && (x1 == 0 || x1 == 2)) && ((y1 == 0 || y1 == 1) || y1 == 2) [2024-02-07 14:21:37,074 INFO L76 edCorrectnessWitness]: Location invariant before [L720-L720] (((0 <= y1) && (y1 <= 2)) && (y1 <= 127)) && ((y1 == 0 || y1 == 1) || y1 == 2) [2024-02-07 14:21:37,074 INFO L76 edCorrectnessWitness]: Location invariant before [L783-L783] (((0 <= y2) && (y2 <= 2)) && (y2 <= 127)) && ((y2 == 0 || y2 == 1) || y2 == 2) [2024-02-07 14:21:37,074 INFO L76 edCorrectnessWitness]: Location invariant after [L732-L732] (((0 <= x) && (x <= 2)) && (x <= 127)) && ((x == 0 || x == 1) || x == 2) [2024-02-07 14:21:37,074 INFO L76 edCorrectnessWitness]: Location invariant before [L743-L743] ((0 <= b2) && (b2 <= 1)) && (b2 == 0 || b2 == 1) [2024-02-07 14:21:37,075 INFO L76 edCorrectnessWitness]: Location invariant before [L784-L784] (((0 <= y2) && (y2 <= 2)) && (y2 <= 127)) && ((y2 == 0 || y2 == 1) || y2 == 2) [2024-02-07 14:21:37,075 INFO L76 edCorrectnessWitness]: Location invariant before [L810-L810] ((0 <= b12) && (b12 <= 1)) && (b12 == 0 || b12 == 1) [2024-02-07 14:21:37,075 INFO L76 edCorrectnessWitness]: Location invariant before [L723-L723] (((0 <= y) && (y <= 2)) && (y <= 127)) && ((y == 0 || y == 1) || y == 2) [2024-02-07 14:21:37,075 INFO L76 edCorrectnessWitness]: Location invariant before [L818-L818] (((0 <= y2) && (y2 <= 2)) && (y2 <= 127)) && ((y2 == 0 || y2 == 1) || y2 == 2) [2024-02-07 14:21:37,119 INFO L178 MainTranslator]: Built tables and reachable declarations [2024-02-07 14:21:37,382 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/lamport.i[32156,32169] [2024-02-07 14:21:37,390 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/lamport.i[34083,34096] [2024-02-07 14:21:37,398 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:21:37,409 INFO L203 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local [2024-02-07 14:21:37,479 WARN L423 MainDispatcher]: Unable to annotate int with a witness entry [2024-02-07 14:21:37,479 WARN L423 MainDispatcher]: Unable to annotate y1 = y with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-07 14:21:37,507 WARN L423 MainDispatcher]: Unable to annotate int with a witness entry [2024-02-07 14:21:37,508 WARN L423 MainDispatcher]: Unable to annotate x1 = x with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-07 14:21:37,511 WARN L423 MainDispatcher]: Unable to annotate int with a witness entry [2024-02-07 14:21:37,512 WARN L423 MainDispatcher]: Unable to annotate b21 = b2 with a witness entry 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 [2024-02-07 14:21:37,526 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/lamport.i[32156,32169] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-07 14:21:37,530 WARN L423 MainDispatcher]: Unable to annotate int with a witness entry [2024-02-07 14:21:37,530 WARN L423 MainDispatcher]: Unable to annotate y2 = y with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-07 14:21:37,539 WARN L423 MainDispatcher]: Unable to annotate int with a witness entry [2024-02-07 14:21:37,539 WARN L423 MainDispatcher]: Unable to annotate x2 = x with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-07 14:21:37,541 WARN L423 MainDispatcher]: Unable to annotate int with a witness entry [2024-02-07 14:21:37,541 WARN L423 MainDispatcher]: Unable to annotate b12 = b1 with a witness entry 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 [2024-02-07 14:21:37,552 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/lamport.i[34083,34096] Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-07 14:21:37,558 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:21:37,590 INFO L207 MainTranslator]: Completed translation [2024-02-07 14:21:37,590 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:21:37 WrapperNode [2024-02-07 14:21:37,590 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-07 14:21:37,592 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-07 14:21:37,592 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-07 14:21:37,592 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-07 14:21:37,597 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:21:37" (1/1) ... [2024-02-07 14:21:37,621 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:21:37" (1/1) ... [2024-02-07 14:21:37,640 INFO L138 Inliner]: procedures = 170, calls = 82, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 43 [2024-02-07 14:21:37,641 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-07 14:21:37,641 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-07 14:21:37,641 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-07 14:21:37,641 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-07 14:21:37,650 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:21:37" (1/1) ... [2024-02-07 14:21:37,650 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:21:37" (1/1) ... [2024-02-07 14:21:37,660 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:21:37" (1/1) ... [2024-02-07 14:21:37,684 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-02-07 14:21:37,689 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:21:37" (1/1) ... [2024-02-07 14:21:37,689 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:21:37" (1/1) ... [2024-02-07 14:21:37,696 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:21:37" (1/1) ... [2024-02-07 14:21:37,701 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:21:37" (1/1) ... [2024-02-07 14:21:37,702 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:21:37" (1/1) ... [2024-02-07 14:21:37,703 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:21:37" (1/1) ... [2024-02-07 14:21:37,706 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-07 14:21:37,706 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-07 14:21:37,706 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-07 14:21:37,707 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-07 14:21:37,707 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:21:37" (1/1) ... [2024-02-07 14:21:37,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:21:37,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:21:37,754 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) [2024-02-07 14:21:37,770 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 [2024-02-07 14:21:37,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-07 14:21:37,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-07 14:21:37,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-07 14:21:37,796 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2024-02-07 14:21:37,796 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2024-02-07 14:21:37,796 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-02-07 14:21:37,797 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-02-07 14:21:37,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-07 14:21:37,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-07 14:21:37,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-07 14:21:37,797 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-07 14:21:37,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-07 14:21:37,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-07 14:21:37,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-07 14:21:37,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-07 14:21:37,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-07 14:21:37,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-07 14:21:37,798 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-07 14:21:37,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-07 14:21:37,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-07 14:21:37,799 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-07 14:21:37,910 INFO L244 CfgBuilder]: Building ICFG [2024-02-07 14:21:37,912 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-07 14:21:38,195 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-07 14:21:38,195 INFO L293 CfgBuilder]: Performing block encoding [2024-02-07 14:21:38,342 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-07 14:21:38,342 INFO L320 CfgBuilder]: Removed 8 assume(true) statements. [2024-02-07 14:21:38,343 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:21:38 BoogieIcfgContainer [2024-02-07 14:21:38,343 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-07 14:21:38,347 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-07 14:21:38,347 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-07 14:21:38,349 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-07 14:21:38,350 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:21:35" (1/4) ... [2024-02-07 14:21:38,351 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bae9482 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 02:21:38, skipping insertion in model container [2024-02-07 14:21:38,351 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 02:21:36" (2/4) ... [2024-02-07 14:21:38,351 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bae9482 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 02:21:38, skipping insertion in model container [2024-02-07 14:21:38,352 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:21:37" (3/4) ... [2024-02-07 14:21:38,352 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bae9482 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 02:21:38, skipping insertion in model container [2024-02-07 14:21:38,353 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:21:38" (4/4) ... [2024-02-07 14:21:38,354 INFO L112 eAbstractionObserver]: Analyzing ICFG lamport.i [2024-02-07 14:21:38,368 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-07 14:21:38,368 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 56 error locations. [2024-02-07 14:21:38,368 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-07 14:21:38,446 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-02-07 14:21:38,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 142 places, 153 transitions, 320 flow [2024-02-07 14:21:38,547 INFO L124 PetriNetUnfolderBase]: 18/151 cut-off events. [2024-02-07 14:21:38,548 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-02-07 14:21:38,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 151 events. 18/151 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 586 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 147. Up to 4 conditions per place. [2024-02-07 14:21:38,554 INFO L82 GeneralOperation]: Start removeDead. Operand has 142 places, 153 transitions, 320 flow [2024-02-07 14:21:38,562 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 138 places, 149 transitions, 307 flow [2024-02-07 14:21:38,574 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 14:21:38,583 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;@79a8728a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 14:21:38,584 INFO L358 AbstractCegarLoop]: Starting to check reachability of 114 error locations. [2024-02-07 14:21:38,588 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 14:21:38,588 INFO L124 PetriNetUnfolderBase]: 1/12 cut-off events. [2024-02-07 14:21:38,588 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:21:38,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:21:38,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-02-07 14:21:38,590 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err23ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err23ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 111 more)] === [2024-02-07 14:21:38,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:21:38,594 INFO L85 PathProgramCache]: Analyzing trace with hash -358641166, now seen corresponding path program 1 times [2024-02-07 14:21:38,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:21:38,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010090038] [2024-02-07 14:21:38,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:21:38,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:21:38,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:21:38,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:21:38,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:21:38,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010090038] [2024-02-07 14:21:38,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010090038] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:21:38,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:21:38,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:21:38,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661839187] [2024-02-07 14:21:38,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:21:38,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-02-07 14:21:38,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:21:38,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-02-07 14:21:38,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-02-07 14:21:38,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 153 [2024-02-07 14:21:38,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 149 transitions, 307 flow. Second operand has 2 states, 2 states have (on average 53.5) internal successors, (107), 2 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:21:38,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:21:38,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 153 [2024-02-07 14:21:38,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:21:39,556 INFO L124 PetriNetUnfolderBase]: 2769/5763 cut-off events. [2024-02-07 14:21:39,556 INFO L125 PetriNetUnfolderBase]: For 67/67 co-relation queries the response was YES. [2024-02-07 14:21:39,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10135 conditions, 5763 events. 2769/5763 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 43363 event pairs, 2101 based on Foata normal form. 434/4619 useless extension candidates. Maximal degree in co-relation 9862. Up to 4288 conditions per place. [2024-02-07 14:21:39,593 INFO L140 encePairwiseOnDemand]: 121/153 looper letters, 67 selfloop transitions, 0 changer transitions 0/117 dead transitions. [2024-02-07 14:21:39,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 117 transitions, 377 flow [2024-02-07 14:21:39,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-02-07 14:21:39,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-02-07 14:21:39,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 203 transitions. [2024-02-07 14:21:39,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6633986928104575 [2024-02-07 14:21:39,606 INFO L175 Difference]: Start difference. First operand has 138 places, 149 transitions, 307 flow. Second operand 2 states and 203 transitions. [2024-02-07 14:21:39,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 117 transitions, 377 flow [2024-02-07 14:21:39,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 117 transitions, 372 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-07 14:21:39,612 INFO L231 Difference]: Finished difference. Result has 110 places, 117 transitions, 238 flow [2024-02-07 14:21:39,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=238, PETRI_PLACES=110, PETRI_TRANSITIONS=117} [2024-02-07 14:21:39,617 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, -28 predicate places. [2024-02-07 14:21:39,618 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 117 transitions, 238 flow [2024-02-07 14:21:39,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 53.5) internal successors, (107), 2 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:21:39,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:21:39,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:21:39,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-07 14:21:39,619 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err23ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 111 more)] === [2024-02-07 14:21:39,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:21:39,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1055796966, now seen corresponding path program 1 times [2024-02-07 14:21:39,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:21:39,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267821486] [2024-02-07 14:21:39,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:21:39,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:21:39,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:21:39,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:21:39,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:21:39,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267821486] [2024-02-07 14:21:39,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267821486] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:21:39,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:21:39,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 14:21:39,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243295167] [2024-02-07 14:21:39,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:21:39,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:21:39,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:21:39,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:21:39,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:21:39,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 153 [2024-02-07 14:21:39,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 117 transitions, 238 flow. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 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) [2024-02-07 14:21:39,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:21:39,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 153 [2024-02-07 14:21:39,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:21:40,415 INFO L124 PetriNetUnfolderBase]: 3334/7046 cut-off events. [2024-02-07 14:21:40,416 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2024-02-07 14:21:40,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12388 conditions, 7046 events. 3334/7046 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 54915 event pairs, 952 based on Foata normal form. 0/5314 useless extension candidates. Maximal degree in co-relation 12385. Up to 4051 conditions per place. [2024-02-07 14:21:40,446 INFO L140 encePairwiseOnDemand]: 136/153 looper letters, 113 selfloop transitions, 5 changer transitions 2/170 dead transitions. [2024-02-07 14:21:40,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 170 transitions, 587 flow [2024-02-07 14:21:40,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:21:40,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:21:40,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 288 transitions. [2024-02-07 14:21:40,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6274509803921569 [2024-02-07 14:21:40,448 INFO L175 Difference]: Start difference. First operand has 110 places, 117 transitions, 238 flow. Second operand 3 states and 288 transitions. [2024-02-07 14:21:40,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 170 transitions, 587 flow [2024-02-07 14:21:40,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 170 transitions, 587 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-07 14:21:40,452 INFO L231 Difference]: Finished difference. Result has 113 places, 119 transitions, 285 flow [2024-02-07 14:21:40,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=285, PETRI_PLACES=113, PETRI_TRANSITIONS=119} [2024-02-07 14:21:40,453 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, -25 predicate places. [2024-02-07 14:21:40,453 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 119 transitions, 285 flow [2024-02-07 14:21:40,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 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) [2024-02-07 14:21:40,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:21:40,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:21:40,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-07 14:21:40,454 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err23ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 111 more)] === [2024-02-07 14:21:40,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:21:40,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1630033204, now seen corresponding path program 1 times [2024-02-07 14:21:40,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:21:40,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221677944] [2024-02-07 14:21:40,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:21:40,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:21:40,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:21:40,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:21:40,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:21:40,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221677944] [2024-02-07 14:21:40,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221677944] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:21:40,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:21:40,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:21:40,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434873300] [2024-02-07 14:21:40,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:21:40,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:21:40,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:21:40,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:21:40,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:21:40,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 153 [2024-02-07 14:21:40,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 119 transitions, 285 flow. Second operand has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:21:40,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:21:40,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 153 [2024-02-07 14:21:40,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:21:41,328 INFO L124 PetriNetUnfolderBase]: 4646/9612 cut-off events. [2024-02-07 14:21:41,328 INFO L125 PetriNetUnfolderBase]: For 1206/1282 co-relation queries the response was YES. [2024-02-07 14:21:41,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18524 conditions, 9612 events. 4646/9612 cut-off events. For 1206/1282 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 77216 event pairs, 967 based on Foata normal form. 76/8251 useless extension candidates. Maximal degree in co-relation 18519. Up to 3106 conditions per place. [2024-02-07 14:21:41,364 INFO L140 encePairwiseOnDemand]: 133/153 looper letters, 188 selfloop transitions, 22 changer transitions 0/254 dead transitions. [2024-02-07 14:21:41,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 254 transitions, 1009 flow [2024-02-07 14:21:41,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:21:41,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:21:41,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 447 transitions. [2024-02-07 14:21:41,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5843137254901961 [2024-02-07 14:21:41,366 INFO L175 Difference]: Start difference. First operand has 113 places, 119 transitions, 285 flow. Second operand 5 states and 447 transitions. [2024-02-07 14:21:41,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 254 transitions, 1009 flow [2024-02-07 14:21:41,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 254 transitions, 1001 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 14:21:41,375 INFO L231 Difference]: Finished difference. Result has 120 places, 136 transitions, 448 flow [2024-02-07 14:21:41,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=448, PETRI_PLACES=120, PETRI_TRANSITIONS=136} [2024-02-07 14:21:41,375 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, -18 predicate places. [2024-02-07 14:21:41,375 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 136 transitions, 448 flow [2024-02-07 14:21:41,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:21:41,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:21:41,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:21:41,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-07 14:21:41,376 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr2Err3ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err23ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 111 more)] === [2024-02-07 14:21:41,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:21:41,377 INFO L85 PathProgramCache]: Analyzing trace with hash -2108941767, now seen corresponding path program 1 times [2024-02-07 14:21:41,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:21:41,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040552761] [2024-02-07 14:21:41,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:21:41,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:21:41,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:21:41,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:21:41,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:21:41,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040552761] [2024-02-07 14:21:41,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040552761] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:21:41,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:21:41,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:21:41,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032055711] [2024-02-07 14:21:41,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:21:41,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:21:41,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:21:41,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:21:41,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:21:41,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 153 [2024-02-07 14:21:41,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 136 transitions, 448 flow. Second operand has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 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) [2024-02-07 14:21:41,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:21:41,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 153 [2024-02-07 14:21:41,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:21:42,522 INFO L124 PetriNetUnfolderBase]: 5684/11860 cut-off events. [2024-02-07 14:21:42,522 INFO L125 PetriNetUnfolderBase]: For 4496/4720 co-relation queries the response was YES. [2024-02-07 14:21:42,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25675 conditions, 11860 events. 5684/11860 cut-off events. For 4496/4720 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 99424 event pairs, 1393 based on Foata normal form. 88/10328 useless extension candidates. Maximal degree in co-relation 25667. Up to 3678 conditions per place. [2024-02-07 14:21:42,603 INFO L140 encePairwiseOnDemand]: 133/153 looper letters, 196 selfloop transitions, 27 changer transitions 0/269 dead transitions. [2024-02-07 14:21:42,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 269 transitions, 1299 flow [2024-02-07 14:21:42,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:21:42,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:21:42,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 443 transitions. [2024-02-07 14:21:42,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5790849673202615 [2024-02-07 14:21:42,605 INFO L175 Difference]: Start difference. First operand has 120 places, 136 transitions, 448 flow. Second operand 5 states and 443 transitions. [2024-02-07 14:21:42,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 269 transitions, 1299 flow [2024-02-07 14:21:42,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 269 transitions, 1286 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 14:21:42,616 INFO L231 Difference]: Finished difference. Result has 127 places, 155 transitions, 651 flow [2024-02-07 14:21:42,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=651, PETRI_PLACES=127, PETRI_TRANSITIONS=155} [2024-02-07 14:21:42,617 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, -11 predicate places. [2024-02-07 14:21:42,617 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 155 transitions, 651 flow [2024-02-07 14:21:42,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 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) [2024-02-07 14:21:42,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:21:42,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:21:42,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-07 14:21:42,618 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err23ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 111 more)] === [2024-02-07 14:21:42,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:21:42,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1419711426, now seen corresponding path program 1 times [2024-02-07 14:21:42,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:21:42,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330781908] [2024-02-07 14:21:42,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:21:42,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:21:42,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:21:42,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:21:42,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:21:42,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330781908] [2024-02-07 14:21:42,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330781908] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:21:42,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:21:42,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:21:42,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655799443] [2024-02-07 14:21:42,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:21:42,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:21:42,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:21:42,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:21:42,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:21:42,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 153 [2024-02-07 14:21:42,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 155 transitions, 651 flow. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 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) [2024-02-07 14:21:42,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:21:42,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 153 [2024-02-07 14:21:42,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:21:44,041 INFO L124 PetriNetUnfolderBase]: 8737/19121 cut-off events. [2024-02-07 14:21:44,041 INFO L125 PetriNetUnfolderBase]: For 16687/17459 co-relation queries the response was YES. [2024-02-07 14:21:44,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45302 conditions, 19121 events. 8737/19121 cut-off events. For 16687/17459 co-relation queries the response was YES. Maximal size of possible extension queue 706. Compared 184366 event pairs, 3582 based on Foata normal form. 6/16830 useless extension candidates. Maximal degree in co-relation 45290. Up to 7274 conditions per place. [2024-02-07 14:21:44,135 INFO L140 encePairwiseOnDemand]: 149/153 looper letters, 196 selfloop transitions, 2 changer transitions 0/252 dead transitions. [2024-02-07 14:21:44,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 252 transitions, 1524 flow [2024-02-07 14:21:44,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:21:44,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:21:44,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 288 transitions. [2024-02-07 14:21:44,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6274509803921569 [2024-02-07 14:21:44,137 INFO L175 Difference]: Start difference. First operand has 127 places, 155 transitions, 651 flow. Second operand 3 states and 288 transitions. [2024-02-07 14:21:44,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 252 transitions, 1524 flow [2024-02-07 14:21:44,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 252 transitions, 1524 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-07 14:21:44,158 INFO L231 Difference]: Finished difference. Result has 131 places, 157 transitions, 671 flow [2024-02-07 14:21:44,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=651, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=671, PETRI_PLACES=131, PETRI_TRANSITIONS=157} [2024-02-07 14:21:44,161 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, -7 predicate places. [2024-02-07 14:21:44,161 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 157 transitions, 671 flow [2024-02-07 14:21:44,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 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) [2024-02-07 14:21:44,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:21:44,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:21:44,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-07 14:21:44,162 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err23ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 111 more)] === [2024-02-07 14:21:44,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:21:44,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1061382044, now seen corresponding path program 1 times [2024-02-07 14:21:44,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:21:44,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602165509] [2024-02-07 14:21:44,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:21:44,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:21:44,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:21:44,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:21:44,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:21:44,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602165509] [2024-02-07 14:21:44,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602165509] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:21:44,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:21:44,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 14:21:44,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039061589] [2024-02-07 14:21:44,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:21:44,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 14:21:44,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:21:44,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 14:21:44,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-02-07 14:21:44,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 153 [2024-02-07 14:21:44,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 157 transitions, 671 flow. Second operand has 5 states, 5 states have (on average 43.8) internal successors, (219), 5 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) [2024-02-07 14:21:44,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:21:44,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 153 [2024-02-07 14:21:44,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:21:45,997 INFO L124 PetriNetUnfolderBase]: 9310/19142 cut-off events. [2024-02-07 14:21:45,998 INFO L125 PetriNetUnfolderBase]: For 17734/18148 co-relation queries the response was YES. [2024-02-07 14:21:46,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47262 conditions, 19142 events. 9310/19142 cut-off events. For 17734/18148 co-relation queries the response was YES. Maximal size of possible extension queue 675. Compared 173651 event pairs, 4298 based on Foata normal form. 2/17229 useless extension candidates. Maximal degree in co-relation 47248. Up to 8902 conditions per place. [2024-02-07 14:21:46,104 INFO L140 encePairwiseOnDemand]: 144/153 looper letters, 313 selfloop transitions, 14 changer transitions 0/369 dead transitions. [2024-02-07 14:21:46,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 369 transitions, 2328 flow [2024-02-07 14:21:46,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 14:21:46,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 14:21:46,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 492 transitions. [2024-02-07 14:21:46,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5359477124183006 [2024-02-07 14:21:46,107 INFO L175 Difference]: Start difference. First operand has 131 places, 157 transitions, 671 flow. Second operand 6 states and 492 transitions. [2024-02-07 14:21:46,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 369 transitions, 2328 flow [2024-02-07 14:21:46,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 369 transitions, 2320 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 14:21:46,129 INFO L231 Difference]: Finished difference. Result has 138 places, 169 transitions, 812 flow [2024-02-07 14:21:46,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=667, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=812, PETRI_PLACES=138, PETRI_TRANSITIONS=169} [2024-02-07 14:21:46,130 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, 0 predicate places. [2024-02-07 14:21:46,130 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 169 transitions, 812 flow [2024-02-07 14:21:46,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.8) internal successors, (219), 5 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) [2024-02-07 14:21:46,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:21:46,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:21:46,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-07 14:21:46,131 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr2Err10ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err23ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 111 more)] === [2024-02-07 14:21:46,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:21:46,131 INFO L85 PathProgramCache]: Analyzing trace with hash -701865674, now seen corresponding path program 1 times [2024-02-07 14:21:46,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:21:46,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675212419] [2024-02-07 14:21:46,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:21:46,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:21:46,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:21:46,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:21:46,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:21:46,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675212419] [2024-02-07 14:21:46,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675212419] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:21:46,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:21:46,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:21:46,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935911609] [2024-02-07 14:21:46,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:21:46,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:21:46,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:21:46,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:21:46,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:21:46,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 153 [2024-02-07 14:21:46,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 169 transitions, 812 flow. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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) [2024-02-07 14:21:46,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:21:46,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 153 [2024-02-07 14:21:46,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:21:47,345 INFO L124 PetriNetUnfolderBase]: 7002/15144 cut-off events. [2024-02-07 14:21:47,345 INFO L125 PetriNetUnfolderBase]: For 18478/19206 co-relation queries the response was YES. [2024-02-07 14:21:47,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38626 conditions, 15144 events. 7002/15144 cut-off events. For 18478/19206 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 138222 event pairs, 2766 based on Foata normal form. 182/13808 useless extension candidates. Maximal degree in co-relation 38608. Up to 7842 conditions per place. [2024-02-07 14:21:47,418 INFO L140 encePairwiseOnDemand]: 149/153 looper letters, 175 selfloop transitions, 5 changer transitions 0/237 dead transitions. [2024-02-07 14:21:47,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 237 transitions, 1534 flow [2024-02-07 14:21:47,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:21:47,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:21:47,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 270 transitions. [2024-02-07 14:21:47,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5882352941176471 [2024-02-07 14:21:47,420 INFO L175 Difference]: Start difference. First operand has 138 places, 169 transitions, 812 flow. Second operand 3 states and 270 transitions. [2024-02-07 14:21:47,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 237 transitions, 1534 flow [2024-02-07 14:21:47,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 237 transitions, 1532 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-02-07 14:21:47,443 INFO L231 Difference]: Finished difference. Result has 140 places, 169 transitions, 837 flow [2024-02-07 14:21:47,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=802, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=837, PETRI_PLACES=140, PETRI_TRANSITIONS=169} [2024-02-07 14:21:47,443 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, 2 predicate places. [2024-02-07 14:21:47,443 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 169 transitions, 837 flow [2024-02-07 14:21:47,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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) [2024-02-07 14:21:47,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:21:47,444 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:21:47,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-07 14:21:47,444 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr2Err11ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err23ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 111 more)] === [2024-02-07 14:21:47,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:21:47,445 INFO L85 PathProgramCache]: Analyzing trace with hash -282998687, now seen corresponding path program 1 times [2024-02-07 14:21:47,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:21:47,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294679946] [2024-02-07 14:21:47,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:21:47,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:21:47,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:21:47,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:21:47,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:21:47,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294679946] [2024-02-07 14:21:47,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294679946] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:21:47,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:21:47,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 14:21:47,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577925489] [2024-02-07 14:21:47,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:21:47,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 14:21:47,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:21:47,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 14:21:47,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-02-07 14:21:47,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 153 [2024-02-07 14:21:47,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 169 transitions, 837 flow. Second operand has 6 states, 6 states have (on average 43.833333333333336) internal successors, (263), 6 states have internal predecessors, (263), 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) [2024-02-07 14:21:47,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:21:47,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 153 [2024-02-07 14:21:47,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:21:49,463 INFO L124 PetriNetUnfolderBase]: 10264/22098 cut-off events. [2024-02-07 14:21:49,463 INFO L125 PetriNetUnfolderBase]: For 27114/27712 co-relation queries the response was YES. [2024-02-07 14:21:49,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55556 conditions, 22098 events. 10264/22098 cut-off events. For 27114/27712 co-relation queries the response was YES. Maximal size of possible extension queue 705. Compared 204732 event pairs, 3223 based on Foata normal form. 6/19838 useless extension candidates. Maximal degree in co-relation 55536. Up to 10126 conditions per place. [2024-02-07 14:21:49,585 INFO L140 encePairwiseOnDemand]: 142/153 looper letters, 308 selfloop transitions, 42 changer transitions 0/395 dead transitions. [2024-02-07 14:21:49,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 395 transitions, 2537 flow [2024-02-07 14:21:49,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-07 14:21:49,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-07 14:21:49,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 722 transitions. [2024-02-07 14:21:49,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4718954248366013 [2024-02-07 14:21:49,587 INFO L175 Difference]: Start difference. First operand has 140 places, 169 transitions, 837 flow. Second operand 10 states and 722 transitions. [2024-02-07 14:21:49,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 395 transitions, 2537 flow [2024-02-07 14:21:49,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 395 transitions, 2505 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-02-07 14:21:49,626 INFO L231 Difference]: Finished difference. Result has 155 places, 198 transitions, 1281 flow [2024-02-07 14:21:49,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=825, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1281, PETRI_PLACES=155, PETRI_TRANSITIONS=198} [2024-02-07 14:21:49,627 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, 17 predicate places. [2024-02-07 14:21:49,627 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 198 transitions, 1281 flow [2024-02-07 14:21:49,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 43.833333333333336) internal successors, (263), 6 states have internal predecessors, (263), 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) [2024-02-07 14:21:49,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:21:49,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:21:49,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-02-07 14:21:49,628 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err23ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err23ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 111 more)] === [2024-02-07 14:21:49,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:21:49,628 INFO L85 PathProgramCache]: Analyzing trace with hash 84035659, now seen corresponding path program 1 times [2024-02-07 14:21:49,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:21:49,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134019718] [2024-02-07 14:21:49,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:21:49,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:21:49,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:21:49,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:21:49,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:21:49,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134019718] [2024-02-07 14:21:49,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134019718] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:21:49,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:21:49,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:21:49,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510374203] [2024-02-07 14:21:49,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:21:49,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:21:49,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:21:49,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:21:49,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:21:49,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 153 [2024-02-07 14:21:49,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 198 transitions, 1281 flow. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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) [2024-02-07 14:21:49,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:21:49,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 153 [2024-02-07 14:21:49,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:21:51,934 INFO L124 PetriNetUnfolderBase]: 11689/25083 cut-off events. [2024-02-07 14:21:51,935 INFO L125 PetriNetUnfolderBase]: For 42192/42586 co-relation queries the response was YES. [2024-02-07 14:21:52,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64395 conditions, 25083 events. 11689/25083 cut-off events. For 42192/42586 co-relation queries the response was YES. Maximal size of possible extension queue 905. Compared 242369 event pairs, 5395 based on Foata normal form. 1160/25255 useless extension candidates. Maximal degree in co-relation 64367. Up to 11246 conditions per place. [2024-02-07 14:21:52,133 INFO L140 encePairwiseOnDemand]: 145/153 looper letters, 182 selfloop transitions, 3 changer transitions 23/257 dead transitions. [2024-02-07 14:21:52,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 257 transitions, 2132 flow [2024-02-07 14:21:52,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:21:52,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:21:52,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 246 transitions. [2024-02-07 14:21:52,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5359477124183006 [2024-02-07 14:21:52,135 INFO L175 Difference]: Start difference. First operand has 155 places, 198 transitions, 1281 flow. Second operand 3 states and 246 transitions. [2024-02-07 14:21:52,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 257 transitions, 2132 flow [2024-02-07 14:21:52,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 257 transitions, 2130 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-02-07 14:21:52,208 INFO L231 Difference]: Finished difference. Result has 159 places, 185 transitions, 1192 flow [2024-02-07 14:21:52,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=1279, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1192, PETRI_PLACES=159, PETRI_TRANSITIONS=185} [2024-02-07 14:21:52,209 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, 21 predicate places. [2024-02-07 14:21:52,209 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 185 transitions, 1192 flow [2024-02-07 14:21:52,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 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) [2024-02-07 14:21:52,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:21:52,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:21:52,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-02-07 14:21:52,210 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr2Err23ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err23ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 111 more)] === [2024-02-07 14:21:52,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:21:52,210 INFO L85 PathProgramCache]: Analyzing trace with hash 207643135, now seen corresponding path program 1 times [2024-02-07 14:21:52,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:21:52,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132702543] [2024-02-07 14:21:52,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:21:52,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:21:52,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:21:52,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:21:52,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:21:52,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132702543] [2024-02-07 14:21:52,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132702543] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:21:52,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:21:52,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:21:52,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862069268] [2024-02-07 14:21:52,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:21:52,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:21:52,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:21:52,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:21:52,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:21:52,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 153 [2024-02-07 14:21:52,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 185 transitions, 1192 flow. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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) [2024-02-07 14:21:52,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:21:52,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 153 [2024-02-07 14:21:52,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:21:54,295 INFO L124 PetriNetUnfolderBase]: 9607/20555 cut-off events. [2024-02-07 14:21:54,295 INFO L125 PetriNetUnfolderBase]: For 38525/38847 co-relation queries the response was YES. [2024-02-07 14:21:54,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56115 conditions, 20555 events. 9607/20555 cut-off events. For 38525/38847 co-relation queries the response was YES. Maximal size of possible extension queue 718. Compared 189396 event pairs, 5436 based on Foata normal form. 1226/20849 useless extension candidates. Maximal degree in co-relation 56085. Up to 12132 conditions per place. [2024-02-07 14:21:54,437 INFO L140 encePairwiseOnDemand]: 146/153 looper letters, 154 selfloop transitions, 2 changer transitions 34/239 dead transitions. [2024-02-07 14:21:54,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 239 transitions, 1991 flow [2024-02-07 14:21:54,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:21:54,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:21:54,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 242 transitions. [2024-02-07 14:21:54,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5272331154684096 [2024-02-07 14:21:54,439 INFO L175 Difference]: Start difference. First operand has 159 places, 185 transitions, 1192 flow. Second operand 3 states and 242 transitions. [2024-02-07 14:21:54,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 239 transitions, 1991 flow [2024-02-07 14:21:54,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 239 transitions, 1983 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-02-07 14:21:54,503 INFO L231 Difference]: Finished difference. Result has 156 places, 167 transitions, 1070 flow [2024-02-07 14:21:54,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=1170, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1070, PETRI_PLACES=156, PETRI_TRANSITIONS=167} [2024-02-07 14:21:54,504 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, 18 predicate places. [2024-02-07 14:21:54,504 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 167 transitions, 1070 flow [2024-02-07 14:21:54,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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) [2024-02-07 14:21:54,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:21:54,505 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:21:54,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-02-07 14:21:54,505 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thr2Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err23ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 111 more)] === [2024-02-07 14:21:54,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:21:54,506 INFO L85 PathProgramCache]: Analyzing trace with hash -825931069, now seen corresponding path program 1 times [2024-02-07 14:21:54,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:21:54,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895752585] [2024-02-07 14:21:54,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:21:54,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:21:54,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:21:54,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:21:54,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:21:54,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895752585] [2024-02-07 14:21:54,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895752585] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:21:54,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:21:54,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:21:54,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477689376] [2024-02-07 14:21:54,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:21:54,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:21:54,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:21:54,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:21:54,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:21:54,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 153 [2024-02-07 14:21:54,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 167 transitions, 1070 flow. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:21:54,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:21:54,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 153 [2024-02-07 14:21:54,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:21:56,621 INFO L124 PetriNetUnfolderBase]: 9000/20664 cut-off events. [2024-02-07 14:21:56,621 INFO L125 PetriNetUnfolderBase]: For 47668/48524 co-relation queries the response was YES. [2024-02-07 14:21:56,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56549 conditions, 20664 events. 9000/20664 cut-off events. For 47668/48524 co-relation queries the response was YES. Maximal size of possible extension queue 618. Compared 198218 event pairs, 4707 based on Foata normal form. 870/20389 useless extension candidates. Maximal degree in co-relation 56518. Up to 11419 conditions per place. [2024-02-07 14:21:56,748 INFO L140 encePairwiseOnDemand]: 137/153 looper letters, 159 selfloop transitions, 22 changer transitions 1/236 dead transitions. [2024-02-07 14:21:56,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 236 transitions, 1904 flow [2024-02-07 14:21:56,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:21:56,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:21:56,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 280 transitions. [2024-02-07 14:21:56,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6100217864923747 [2024-02-07 14:21:56,749 INFO L175 Difference]: Start difference. First operand has 156 places, 167 transitions, 1070 flow. Second operand 3 states and 280 transitions. [2024-02-07 14:21:56,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 236 transitions, 1904 flow [2024-02-07 14:21:56,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 236 transitions, 1887 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-02-07 14:21:56,815 INFO L231 Difference]: Finished difference. Result has 158 places, 181 transitions, 1390 flow [2024-02-07 14:21:56,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=1051, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1390, PETRI_PLACES=158, PETRI_TRANSITIONS=181} [2024-02-07 14:21:56,816 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, 20 predicate places. [2024-02-07 14:21:56,816 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 181 transitions, 1390 flow [2024-02-07 14:21:56,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:21:56,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:21:56,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:21:56,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-02-07 14:21:56,817 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err23ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 111 more)] === [2024-02-07 14:21:56,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:21:56,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1191204534, now seen corresponding path program 1 times [2024-02-07 14:21:56,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:21:56,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63793298] [2024-02-07 14:21:56,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:21:56,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:21:56,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:21:56,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:21:56,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:21:56,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63793298] [2024-02-07 14:21:56,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63793298] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:21:56,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:21:56,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:21:56,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893113357] [2024-02-07 14:21:56,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:21:56,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:21:56,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:21:56,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:21:56,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:21:56,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 153 [2024-02-07 14:21:56,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 181 transitions, 1390 flow. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:21:56,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:21:56,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 153 [2024-02-07 14:21:56,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:21:58,595 INFO L124 PetriNetUnfolderBase]: 7089/16695 cut-off events. [2024-02-07 14:21:58,595 INFO L125 PetriNetUnfolderBase]: For 54874/55860 co-relation queries the response was YES. [2024-02-07 14:21:58,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46301 conditions, 16695 events. 7089/16695 cut-off events. For 54874/55860 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 157778 event pairs, 3177 based on Foata normal form. 1038/16763 useless extension candidates. Maximal degree in co-relation 46270. Up to 7757 conditions per place. [2024-02-07 14:21:58,683 INFO L140 encePairwiseOnDemand]: 137/153 looper letters, 148 selfloop transitions, 19 changer transitions 0/221 dead transitions. [2024-02-07 14:21:58,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 221 transitions, 1885 flow [2024-02-07 14:21:58,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:21:58,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:21:58,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 268 transitions. [2024-02-07 14:21:58,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5838779956427015 [2024-02-07 14:21:58,685 INFO L175 Difference]: Start difference. First operand has 158 places, 181 transitions, 1390 flow. Second operand 3 states and 268 transitions. [2024-02-07 14:21:58,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 221 transitions, 1885 flow [2024-02-07 14:21:58,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 221 transitions, 1837 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-02-07 14:21:58,739 INFO L231 Difference]: Finished difference. Result has 146 places, 167 transitions, 1278 flow [2024-02-07 14:21:58,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=1240, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1278, PETRI_PLACES=146, PETRI_TRANSITIONS=167} [2024-02-07 14:21:58,740 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, 8 predicate places. [2024-02-07 14:21:58,740 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 167 transitions, 1278 flow [2024-02-07 14:21:58,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:21:58,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:21:58,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:21:58,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-02-07 14:21:58,741 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thr2Err3ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err23ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 111 more)] === [2024-02-07 14:21:58,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:21:58,742 INFO L85 PathProgramCache]: Analyzing trace with hash 165941348, now seen corresponding path program 1 times [2024-02-07 14:21:58,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:21:58,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27348948] [2024-02-07 14:21:58,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:21:58,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:21:58,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:21:58,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:21:58,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:21:58,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27348948] [2024-02-07 14:21:58,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27348948] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:21:58,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:21:58,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 14:21:58,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72773345] [2024-02-07 14:21:58,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:21:58,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:21:58,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:21:58,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:21:58,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:21:58,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 153 [2024-02-07 14:21:58,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 167 transitions, 1278 flow. Second operand has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:21:58,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:21:58,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 153 [2024-02-07 14:21:58,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:22:00,748 INFO L124 PetriNetUnfolderBase]: 8427/19261 cut-off events. [2024-02-07 14:22:00,748 INFO L125 PetriNetUnfolderBase]: For 54598/55718 co-relation queries the response was YES. [2024-02-07 14:22:00,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53079 conditions, 19261 events. 8427/19261 cut-off events. For 54598/55718 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 178669 event pairs, 3921 based on Foata normal form. 396/18604 useless extension candidates. Maximal degree in co-relation 53048. Up to 9447 conditions per place. [2024-02-07 14:22:00,900 INFO L140 encePairwiseOnDemand]: 138/153 looper letters, 182 selfloop transitions, 31 changer transitions 1/263 dead transitions. [2024-02-07 14:22:00,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 263 transitions, 2166 flow [2024-02-07 14:22:00,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:22:00,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:22:00,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 392 transitions. [2024-02-07 14:22:00,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5124183006535947 [2024-02-07 14:22:00,906 INFO L175 Difference]: Start difference. First operand has 146 places, 167 transitions, 1278 flow. Second operand 5 states and 392 transitions. [2024-02-07 14:22:00,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 263 transitions, 2166 flow [2024-02-07 14:22:00,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 263 transitions, 2147 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 14:22:00,971 INFO L231 Difference]: Finished difference. Result has 152 places, 176 transitions, 1457 flow [2024-02-07 14:22:00,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=1259, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1457, PETRI_PLACES=152, PETRI_TRANSITIONS=176} [2024-02-07 14:22:00,972 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, 14 predicate places. [2024-02-07 14:22:00,972 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 176 transitions, 1457 flow [2024-02-07 14:22:00,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:22:00,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:22:00,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:22:00,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-02-07 14:22:00,973 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err23ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 111 more)] === [2024-02-07 14:22:00,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:22:00,973 INFO L85 PathProgramCache]: Analyzing trace with hash 165944194, now seen corresponding path program 1 times [2024-02-07 14:22:00,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:22:00,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30352401] [2024-02-07 14:22:00,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:22:00,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:22:00,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:22:01,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:22:01,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:22:01,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30352401] [2024-02-07 14:22:01,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30352401] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:22:01,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:22:01,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 14:22:01,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579303792] [2024-02-07 14:22:01,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:22:01,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 14:22:01,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:22:01,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 14:22:01,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-02-07 14:22:01,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 153 [2024-02-07 14:22:01,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 176 transitions, 1457 flow. Second operand has 5 states, 5 states have (on average 45.6) internal successors, (228), 5 states have internal predecessors, (228), 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) [2024-02-07 14:22:01,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:22:01,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 153 [2024-02-07 14:22:01,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:22:04,098 INFO L124 PetriNetUnfolderBase]: 13124/27696 cut-off events. [2024-02-07 14:22:04,098 INFO L125 PetriNetUnfolderBase]: For 90392/91335 co-relation queries the response was YES. [2024-02-07 14:22:04,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80964 conditions, 27696 events. 13124/27696 cut-off events. For 90392/91335 co-relation queries the response was YES. Maximal size of possible extension queue 620. Compared 252193 event pairs, 4135 based on Foata normal form. 338/26272 useless extension candidates. Maximal degree in co-relation 80930. Up to 8684 conditions per place. [2024-02-07 14:22:04,283 INFO L140 encePairwiseOnDemand]: 143/153 looper letters, 283 selfloop transitions, 25 changer transitions 3/351 dead transitions. [2024-02-07 14:22:04,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 351 transitions, 3364 flow [2024-02-07 14:22:04,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:22:04,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:22:04,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 389 transitions. [2024-02-07 14:22:04,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5084967320261438 [2024-02-07 14:22:04,284 INFO L175 Difference]: Start difference. First operand has 152 places, 176 transitions, 1457 flow. Second operand 5 states and 389 transitions. [2024-02-07 14:22:04,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 351 transitions, 3364 flow [2024-02-07 14:22:04,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 351 transitions, 3364 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-07 14:22:04,391 INFO L231 Difference]: Finished difference. Result has 159 places, 185 transitions, 1613 flow [2024-02-07 14:22:04,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=1457, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1613, PETRI_PLACES=159, PETRI_TRANSITIONS=185} [2024-02-07 14:22:04,392 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, 21 predicate places. [2024-02-07 14:22:04,392 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 185 transitions, 1613 flow [2024-02-07 14:22:04,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.6) internal successors, (228), 5 states have internal predecessors, (228), 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) [2024-02-07 14:22:04,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:22:04,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:22:04,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-02-07 14:22:04,394 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err23ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 111 more)] === [2024-02-07 14:22:04,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:22:04,395 INFO L85 PathProgramCache]: Analyzing trace with hash 2081888720, now seen corresponding path program 2 times [2024-02-07 14:22:04,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:22:04,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547937230] [2024-02-07 14:22:04,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:22:04,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:22:04,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:22:04,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:22:04,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:22:04,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547937230] [2024-02-07 14:22:04,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547937230] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:22:04,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:22:04,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 14:22:04,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679839227] [2024-02-07 14:22:04,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:22:04,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 14:22:04,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:22:04,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 14:22:04,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-02-07 14:22:04,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 153 [2024-02-07 14:22:04,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 185 transitions, 1613 flow. Second operand has 5 states, 5 states have (on average 45.6) internal successors, (228), 5 states have internal predecessors, (228), 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) [2024-02-07 14:22:04,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:22:04,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 153 [2024-02-07 14:22:04,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:22:07,726 INFO L124 PetriNetUnfolderBase]: 13762/28390 cut-off events. [2024-02-07 14:22:07,727 INFO L125 PetriNetUnfolderBase]: For 98934/99793 co-relation queries the response was YES. [2024-02-07 14:22:07,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86148 conditions, 28390 events. 13762/28390 cut-off events. For 98934/99793 co-relation queries the response was YES. Maximal size of possible extension queue 623. Compared 256186 event pairs, 4382 based on Foata normal form. 396/26902 useless extension candidates. Maximal degree in co-relation 86110. Up to 6724 conditions per place. [2024-02-07 14:22:07,957 INFO L140 encePairwiseOnDemand]: 143/153 looper letters, 289 selfloop transitions, 32 changer transitions 2/363 dead transitions. [2024-02-07 14:22:07,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 363 transitions, 3720 flow [2024-02-07 14:22:07,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:22:07,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:22:07,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 388 transitions. [2024-02-07 14:22:07,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5071895424836601 [2024-02-07 14:22:07,959 INFO L175 Difference]: Start difference. First operand has 159 places, 185 transitions, 1613 flow. Second operand 5 states and 388 transitions. [2024-02-07 14:22:07,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 363 transitions, 3720 flow [2024-02-07 14:22:08,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 363 transitions, 3690 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-02-07 14:22:08,097 INFO L231 Difference]: Finished difference. Result has 164 places, 189 transitions, 1721 flow [2024-02-07 14:22:08,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=1541, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1721, PETRI_PLACES=164, PETRI_TRANSITIONS=189} [2024-02-07 14:22:08,098 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, 26 predicate places. [2024-02-07 14:22:08,098 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 189 transitions, 1721 flow [2024-02-07 14:22:08,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.6) internal successors, (228), 5 states have internal predecessors, (228), 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) [2024-02-07 14:22:08,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:22:08,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:22:08,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-02-07 14:22:08,099 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err23ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 111 more)] === [2024-02-07 14:22:08,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:22:08,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1727364328, now seen corresponding path program 1 times [2024-02-07 14:22:08,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:22:08,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320752102] [2024-02-07 14:22:08,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:22:08,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:22:08,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:22:08,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:22:08,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:22:08,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320752102] [2024-02-07 14:22:08,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320752102] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:22:08,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:22:08,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 14:22:08,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287994726] [2024-02-07 14:22:08,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:22:08,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:22:08,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:22:08,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:22:08,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:22:08,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 153 [2024-02-07 14:22:08,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 189 transitions, 1721 flow. Second operand has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:22:08,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:22:08,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 153 [2024-02-07 14:22:08,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:22:11,356 INFO L124 PetriNetUnfolderBase]: 12780/27784 cut-off events. [2024-02-07 14:22:11,357 INFO L125 PetriNetUnfolderBase]: For 102868/104084 co-relation queries the response was YES. [2024-02-07 14:22:11,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84699 conditions, 27784 events. 12780/27784 cut-off events. For 102868/104084 co-relation queries the response was YES. Maximal size of possible extension queue 645. Compared 260410 event pairs, 5129 based on Foata normal form. 510/26348 useless extension candidates. Maximal degree in co-relation 84658. Up to 13111 conditions per place. [2024-02-07 14:22:11,556 INFO L140 encePairwiseOnDemand]: 138/153 looper letters, 211 selfloop transitions, 32 changer transitions 5/293 dead transitions. [2024-02-07 14:22:11,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 293 transitions, 2950 flow [2024-02-07 14:22:11,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:22:11,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:22:11,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 390 transitions. [2024-02-07 14:22:11,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5098039215686274 [2024-02-07 14:22:11,563 INFO L175 Difference]: Start difference. First operand has 164 places, 189 transitions, 1721 flow. Second operand 5 states and 390 transitions. [2024-02-07 14:22:11,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 293 transitions, 2950 flow [2024-02-07 14:22:11,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 293 transitions, 2875 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-02-07 14:22:11,723 INFO L231 Difference]: Finished difference. Result has 169 places, 201 transitions, 1942 flow [2024-02-07 14:22:11,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=1676, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1942, PETRI_PLACES=169, PETRI_TRANSITIONS=201} [2024-02-07 14:22:11,723 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, 31 predicate places. [2024-02-07 14:22:11,725 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 201 transitions, 1942 flow [2024-02-07 14:22:11,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 14:22:11,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:22:11,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:22:11,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-02-07 14:22:11,726 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thr2Err11ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err23ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 111 more)] === [2024-02-07 14:22:11,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:22:11,727 INFO L85 PathProgramCache]: Analyzing trace with hash 291921168, now seen corresponding path program 1 times [2024-02-07 14:22:11,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:22:11,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830172702] [2024-02-07 14:22:11,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:22:11,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:22:11,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:22:11,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:22:11,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:22:11,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830172702] [2024-02-07 14:22:11,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830172702] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:22:11,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:22:11,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 14:22:11,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099344985] [2024-02-07 14:22:11,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:22:11,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 14:22:11,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:22:11,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 14:22:11,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-02-07 14:22:11,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 153 [2024-02-07 14:22:11,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 201 transitions, 1942 flow. Second operand has 6 states, 6 states have (on average 45.166666666666664) internal successors, (271), 6 states have internal predecessors, (271), 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) [2024-02-07 14:22:11,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:22:11,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 153 [2024-02-07 14:22:11,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:22:16,019 INFO L124 PetriNetUnfolderBase]: 17368/34772 cut-off events. [2024-02-07 14:22:16,019 INFO L125 PetriNetUnfolderBase]: For 140614/141420 co-relation queries the response was YES. [2024-02-07 14:22:16,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111919 conditions, 34772 events. 17368/34772 cut-off events. For 140614/141420 co-relation queries the response was YES. Maximal size of possible extension queue 675. Compared 311850 event pairs, 3757 based on Foata normal form. 230/32752 useless extension candidates. Maximal degree in co-relation 111876. Up to 9797 conditions per place. [2024-02-07 14:22:16,333 INFO L140 encePairwiseOnDemand]: 137/153 looper letters, 307 selfloop transitions, 79 changer transitions 30/458 dead transitions. [2024-02-07 14:22:16,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 458 transitions, 4392 flow [2024-02-07 14:22:16,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-07 14:22:16,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-07 14:22:16,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 662 transitions. [2024-02-07 14:22:16,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4807552650689906 [2024-02-07 14:22:16,337 INFO L175 Difference]: Start difference. First operand has 169 places, 201 transitions, 1942 flow. Second operand 9 states and 662 transitions. [2024-02-07 14:22:16,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 458 transitions, 4392 flow [2024-02-07 14:22:16,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 458 transitions, 4362 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 14:22:16,596 INFO L231 Difference]: Finished difference. Result has 182 places, 226 transitions, 2570 flow [2024-02-07 14:22:16,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=1922, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2570, PETRI_PLACES=182, PETRI_TRANSITIONS=226} [2024-02-07 14:22:16,597 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, 44 predicate places. [2024-02-07 14:22:16,597 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 226 transitions, 2570 flow [2024-02-07 14:22:16,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 45.166666666666664) internal successors, (271), 6 states have internal predecessors, (271), 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) [2024-02-07 14:22:16,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:22:16,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:22:16,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-02-07 14:22:16,598 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thr2Err11ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err23ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 111 more)] === [2024-02-07 14:22:16,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:22:16,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1970370980, now seen corresponding path program 2 times [2024-02-07 14:22:16,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:22:16,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729564881] [2024-02-07 14:22:16,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:22:16,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:22:16,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:22:16,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:22:16,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:22:16,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729564881] [2024-02-07 14:22:16,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729564881] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:22:16,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:22:16,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 14:22:16,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105015933] [2024-02-07 14:22:16,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:22:16,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 14:22:16,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:22:16,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 14:22:16,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-02-07 14:22:16,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 153 [2024-02-07 14:22:16,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 226 transitions, 2570 flow. Second operand has 5 states, 5 states have (on average 45.6) internal successors, (228), 5 states have internal predecessors, (228), 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) [2024-02-07 14:22:16,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:22:16,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 153 [2024-02-07 14:22:16,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:22:21,785 INFO L124 PetriNetUnfolderBase]: 18480/37080 cut-off events. [2024-02-07 14:22:21,786 INFO L125 PetriNetUnfolderBase]: For 182222/183046 co-relation queries the response was YES. [2024-02-07 14:22:22,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126625 conditions, 37080 events. 18480/37080 cut-off events. For 182222/183046 co-relation queries the response was YES. Maximal size of possible extension queue 707. Compared 337250 event pairs, 10074 based on Foata normal form. 182/34871 useless extension candidates. Maximal degree in co-relation 126575. Up to 20390 conditions per place. [2024-02-07 14:22:22,152 INFO L140 encePairwiseOnDemand]: 143/153 looper letters, 299 selfloop transitions, 47 changer transitions 2/390 dead transitions. [2024-02-07 14:22:22,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 390 transitions, 4859 flow [2024-02-07 14:22:22,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 14:22:22,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 14:22:22,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 381 transitions. [2024-02-07 14:22:22,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4980392156862745 [2024-02-07 14:22:22,154 INFO L175 Difference]: Start difference. First operand has 182 places, 226 transitions, 2570 flow. Second operand 5 states and 381 transitions. [2024-02-07 14:22:22,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 390 transitions, 4859 flow [2024-02-07 14:22:22,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 390 transitions, 4619 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-02-07 14:22:22,621 INFO L231 Difference]: Finished difference. Result has 185 places, 249 transitions, 2858 flow [2024-02-07 14:22:22,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=2428, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2858, PETRI_PLACES=185, PETRI_TRANSITIONS=249} [2024-02-07 14:22:22,622 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, 47 predicate places. [2024-02-07 14:22:22,622 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 249 transitions, 2858 flow [2024-02-07 14:22:22,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.6) internal successors, (228), 5 states have internal predecessors, (228), 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) [2024-02-07 14:22:22,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:22:22,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:22:22,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-02-07 14:22:22,623 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thr1Err13ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err23ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 111 more)] === [2024-02-07 14:22:22,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:22:22,623 INFO L85 PathProgramCache]: Analyzing trace with hash 136922242, now seen corresponding path program 1 times [2024-02-07 14:22:22,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:22:22,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883114105] [2024-02-07 14:22:22,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:22:22,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:22:22,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:22:22,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:22:22,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:22:22,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883114105] [2024-02-07 14:22:22,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883114105] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:22:22,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:22:22,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:22:22,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190572144] [2024-02-07 14:22:22,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:22:22,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:22:22,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:22:22,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:22:22,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:22:22,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 153 [2024-02-07 14:22:22,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 249 transitions, 2858 flow. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 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) [2024-02-07 14:22:22,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:22:22,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 153 [2024-02-07 14:22:22,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand