./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 e7c74aec 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-wip.fs.fix-undeclared-acsl-variable-e7c74ae-m [2024-02-07 19:00:01,763 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-07 19:00:01,887 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-07 19:00:01,895 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-07 19:00:01,895 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-07 19:00:01,926 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-07 19:00:01,927 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-07 19:00:01,928 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-07 19:00:01,928 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-07 19:00:01,934 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-07 19:00:01,934 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-07 19:00:01,934 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-07 19:00:01,936 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-07 19:00:01,937 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-07 19:00:01,937 INFO L153 SettingsManager]: * Use SBE=true [2024-02-07 19:00:01,938 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-07 19:00:01,938 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-07 19:00:01,938 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-07 19:00:01,938 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-07 19:00:01,939 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-07 19:00:01,939 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-07 19:00:01,939 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-07 19:00:01,940 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-07 19:00:01,940 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-07 19:00:01,940 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-07 19:00:01,940 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-07 19:00:01,941 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-07 19:00:01,941 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-07 19:00:01,942 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-07 19:00:01,942 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-07 19:00:01,943 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-07 19:00:01,943 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-07 19:00:01,943 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 19:00:01,944 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-07 19:00:01,944 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-07 19:00:01,944 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-07 19:00:01,945 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-07 19:00:01,945 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-07 19:00:01,945 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-07 19:00:01,946 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-07 19:00:01,946 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-07 19:00:01,947 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-07 19:00:01,947 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-07 19:00:01,947 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-07 19:00:02,181 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-07 19:00:02,206 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-07 19:00:02,208 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-07 19:00:02,209 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-07 19:00:02,210 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-07 19:00:02,211 INFO L431 ainManager$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 19:00:02,449 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-07 19:00:02,449 INFO L274 PluginConnector]: CDTParser initialized [2024-02-07 19:00:02,450 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/lamport.i [2024-02-07 19:00:03,721 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-07 19:00:03,946 INFO L384 CDTParser]: Found 1 translation units. [2024-02-07 19:00:03,946 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/lamport.i [2024-02-07 19:00:03,960 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3fc4fe45/9de3bd330df14a7b8f5df788428d5c53/FLAG0f80b80c2 [2024-02-07 19:00:03,973 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3fc4fe45/9de3bd330df14a7b8f5df788428d5c53 [2024-02-07 19:00:03,973 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-07 19:00:03,974 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-07 19:00:03,976 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-07 19:00:03,976 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-07 19:00:03,980 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-07 19:00:03,981 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:00:02" (1/2) ... [2024-02-07 19:00:03,981 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56ef1469 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:00:03, skipping insertion in model container [2024-02-07 19:00:03,982 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:00:02" (1/2) ... [2024-02-07 19:00:03,983 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1e4b5f0f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:00:03, skipping insertion in model container [2024-02-07 19:00:03,983 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 07:00:03" (2/2) ... [2024-02-07 19:00:03,983 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56ef1469 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:00:03, skipping insertion in model container [2024-02-07 19:00:03,984 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 07:00:03" (2/2) ... [2024-02-07 19:00:03,984 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-07 19:00:04,206 INFO L74 edCorrectnessWitness]: Found the following entries in the witness: [2024-02-07 19:00:04,207 INFO L76 edCorrectnessWitness]: Location invariant before [L793-L793] (((0 <= y) && (y <= 2)) && (y <= 127)) && ((y == 0 || y == 1) || y == 2) [2024-02-07 19:00:04,207 INFO L76 edCorrectnessWitness]: Location invariant before [L807-L807] b2 == 0 [2024-02-07 19:00:04,207 INFO L76 edCorrectnessWitness]: Location invariant before [L794-L794] (((0 <= y2) && (y2 <= 2)) && (y2 <= 127)) && ((y2 == 0 || y2 == 1) || y2 == 2) [2024-02-07 19:00:04,207 INFO L76 edCorrectnessWitness]: Location invariant before [L743-L743] ((0 <= b2) && (b2 <= 1)) && (b2 == 0 || b2 == 1) [2024-02-07 19:00:04,207 INFO L76 edCorrectnessWitness]: Location invariant before [L707-L707] b1 == 1 [2024-02-07 19:00:04,207 INFO L76 edCorrectnessWitness]: Location invariant before [L713-L713] (((0 <= y1) && (y1 <= 2)) && (y1 <= 127)) && ((y1 == 0 || y1 == 1) || y1 == 2) [2024-02-07 19:00:04,208 INFO L76 edCorrectnessWitness]: Location invariant before [L752-L752] (((0 <= y1) && (y1 <= 2)) && (y1 <= 127)) && ((y1 == 0 || y1 == 1) || y1 == 2) [2024-02-07 19:00:04,208 INFO L76 edCorrectnessWitness]: Location invariant before [L810-L810] ((0 <= b12) && (b12 <= 1)) && (b12 == 0 || b12 == 1) [2024-02-07 19:00:04,208 INFO L76 edCorrectnessWitness]: Location invariant before [L720-L720] (((0 <= y1) && (y1 <= 2)) && (y1 <= 127)) && ((y1 == 0 || y1 == 1) || y1 == 2) [2024-02-07 19:00:04,208 INFO L76 edCorrectnessWitness]: Location invariant before [L802-L802] (((0 <= x) && (x <= 2)) && (x <= 127)) && ((x == 0 || x == 1) || x == 2) [2024-02-07 19:00:04,208 INFO L76 edCorrectnessWitness]: Location invariant before [L789-L789] (((0 <= y) && (y <= 2)) && (y <= 127)) && ((y == 0 || y == 1) || y == 2) [2024-02-07 19:00:04,208 INFO L76 edCorrectnessWitness]: Location invariant before [L764-L764] ((0 <= X) && (X <= 1)) && (X == 0 || X == 1) [2024-02-07 19:00:04,208 INFO L76 edCorrectnessWitness]: Location invariant before [L790-L790] (((0 <= y2) && (y2 <= 2)) && (y2 <= 127)) && ((y2 == 0 || y2 == 1) || y2 == 2) [2024-02-07 19:00:04,208 INFO L76 edCorrectnessWitness]: Location invariant before [L813-L813] ((0 <= b1) && (b1 <= 1)) && (b1 == 0 || b1 == 1) [2024-02-07 19:00:04,209 INFO L76 edCorrectnessWitness]: Location invariant after [L732-L732] (((0 <= x) && (x <= 2)) && (x <= 127)) && ((x == 0 || x == 1) || x == 2) [2024-02-07 19:00:04,209 INFO L76 edCorrectnessWitness]: Location invariant before [L770-L770] b1 == 0 [2024-02-07 19:00:04,209 INFO L76 edCorrectnessWitness]: Location invariant before [L714-L714] (((0 <= y1) && (y1 <= 2)) && (y1 <= 127)) && ((y1 == 0 || y1 == 1) || y1 == 2) [2024-02-07 19:00:04,209 INFO L76 edCorrectnessWitness]: Location invariant before [L764-L764] ((0 <= X) && (X <= 1)) && (X == 0 || X == 1) [2024-02-07 19:00:04,209 INFO L76 edCorrectnessWitness]: Location invariant before [L767-L767] y == 0 [2024-02-07 19:00:04,209 INFO L76 edCorrectnessWitness]: Location invariant before [L730-L730] y == 1 [2024-02-07 19:00:04,209 INFO L76 edCorrectnessWitness]: Location invariant before [L717-L717] b1 == 0 [2024-02-07 19:00:04,210 INFO L76 edCorrectnessWitness]: Location invariant before [L822-L822] (((0 <= y2) && (y2 <= 2)) && (y2 <= 127)) && ((y2 == 0 || y2 == 1) || y2 == 2) [2024-02-07 19:00:04,210 INFO L76 edCorrectnessWitness]: Location invariant before [L783-L783] (((0 <= y2) && (y2 <= 2)) && (y2 <= 127)) && ((y2 == 0 || y2 == 1) || y2 == 2) [2024-02-07 19:00:04,210 INFO L76 edCorrectnessWitness]: Location invariant before [L800-L800] y == 2 [2024-02-07 19:00:04,210 INFO L76 edCorrectnessWitness]: Location invariant before [L751-L751] (((0 <= y) && (y <= 2)) && (y <= 127)) && ((y == 0 || y == 1) || y == 2) [2024-02-07 19:00:04,210 INFO L76 edCorrectnessWitness]: Location invariant before [L825-L825] (((0 <= y) && (y <= 2)) && (y <= 127)) && ((y == 0 || y == 1) || y == 2) [2024-02-07 19:00:04,211 INFO L76 edCorrectnessWitness]: Location invariant before [L719-L719] (((0 <= y) && (y <= 2)) && (y <= 127)) && ((y == 0 || y == 1) || y == 2) [2024-02-07 19:00:04,211 INFO L76 edCorrectnessWitness]: Location invariant after [L712-L712] (((0 <= y) && (y <= 2)) && (y <= 127)) && ((y == 0 || y == 1) || y == 2) [2024-02-07 19:00:04,211 INFO L76 edCorrectnessWitness]: Location invariant before [L733-L733] (((0 <= x1) && (x1 <= 2)) && (x1 <= 127)) && ((x1 == 0 || x1 == 1) || x1 == 2) [2024-02-07 19:00:04,211 INFO L76 edCorrectnessWitness]: Location invariant before [L732-L732] (((0 <= x) && (x <= 2)) && (x <= 127)) && ((x == 0 || x == 1) || x == 2) [2024-02-07 19:00:04,211 INFO L76 edCorrectnessWitness]: Location invariant before [L814-L814] ((0 <= b12) && (b12 <= 1)) && (b12 == 0 || b12 == 1) [2024-02-07 19:00:04,211 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 19:00:04,211 INFO L76 edCorrectnessWitness]: Location invariant after [L834-L834] ((0 <= X) && (X <= 1)) && (X == 0 || X == 1) [2024-02-07 19:00:04,211 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 19:00:04,212 INFO L76 edCorrectnessWitness]: Location invariant before [L834-L834] ((0 <= X) && (X <= 1)) && (X == 0 || X == 1) [2024-02-07 19:00:04,212 INFO L76 edCorrectnessWitness]: Location invariant after [L782-L782] (((0 <= y) && (y <= 2)) && (y <= 127)) && ((y == 0 || y == 1) || y == 2) [2024-02-07 19:00:04,212 INFO L76 edCorrectnessWitness]: Location invariant before [L712-L712] (((0 <= y) && (y <= 2)) && (y <= 127)) && ((y == 0 || y == 1) || y == 2) [2024-02-07 19:00:04,212 INFO L76 edCorrectnessWitness]: Location invariant before [L710-L710] x == 1 [2024-02-07 19:00:04,213 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 19:00:04,213 INFO L76 edCorrectnessWitness]: Location invariant before [L755-L755] (((0 <= y) && (y <= 2)) && (y <= 127)) && ((y == 0 || y == 1) || y == 2) [2024-02-07 19:00:04,214 INFO L76 edCorrectnessWitness]: Location invariant before [L780-L780] x == 2 [2024-02-07 19:00:04,214 INFO L76 edCorrectnessWitness]: Location invariant before [L739-L739] ((0 <= b2) && (b2 <= 1)) && (b2 == 0 || b2 == 1) [2024-02-07 19:00:04,214 INFO L76 edCorrectnessWitness]: Location invariant after [L739-L739] ((0 <= b2) && (b2 <= 1)) && (b2 == 0 || b2 == 1) [2024-02-07 19:00:04,214 INFO L76 edCorrectnessWitness]: Location invariant before [L782-L782] (((0 <= y) && (y <= 2)) && (y <= 127)) && ((y == 0 || y == 1) || y == 2) [2024-02-07 19:00:04,214 INFO L76 edCorrectnessWitness]: Location invariant before [L809-L809] ((0 <= b1) && (b1 <= 1)) && (b1 == 0 || b1 == 1) [2024-02-07 19:00:04,214 INFO L76 edCorrectnessWitness]: Location invariant before [L748-L748] (((0 <= y1) && (y1 <= 2)) && (y1 <= 127)) && ((y1 == 0 || y1 == 1) || y1 == 2) [2024-02-07 19:00:04,215 INFO L76 edCorrectnessWitness]: Location invariant before [L723-L723] (((0 <= y) && (y <= 2)) && (y <= 127)) && ((y == 0 || y == 1) || y == 2) [2024-02-07 19:00:04,215 INFO L76 edCorrectnessWitness]: Location invariant before [L818-L818] (((0 <= y2) && (y2 <= 2)) && (y2 <= 127)) && ((y2 == 0 || y2 == 1) || y2 == 2) [2024-02-07 19:00:04,215 INFO L76 edCorrectnessWitness]: Location invariant after [L802-L802] (((0 <= x) && (x <= 2)) && (x <= 127)) && ((x == 0 || x == 1) || x == 2) [2024-02-07 19:00:04,215 INFO L76 edCorrectnessWitness]: Location invariant before [L747-L747] (((0 <= y) && (y <= 2)) && (y <= 127)) && ((y == 0 || y == 1) || y == 2) [2024-02-07 19:00:04,215 INFO L76 edCorrectnessWitness]: Location invariant before [L803-L803] (((0 <= x2) && (x2 <= 2)) && (x2 <= 127)) && ((x2 == 0 || x2 == 1) || x2 == 2) [2024-02-07 19:00:04,216 INFO L76 edCorrectnessWitness]: Location invariant before [L840-L840] b2 == 0 [2024-02-07 19:00:04,216 INFO L76 edCorrectnessWitness]: Location invariant after [L809-L809] ((0 <= b1) && (b1 <= 1)) && (b1 == 0 || b1 == 1) [2024-02-07 19:00:04,216 INFO L76 edCorrectnessWitness]: Location invariant before [L834-L834] ((0 <= X) && (X <= 1)) && (X == 0 || X == 1) [2024-02-07 19:00:04,216 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 19:00:04,217 INFO L76 edCorrectnessWitness]: Location invariant before [L784-L784] (((0 <= y2) && (y2 <= 2)) && (y2 <= 127)) && ((y2 == 0 || y2 == 1) || y2 == 2) [2024-02-07 19:00:04,217 INFO L76 edCorrectnessWitness]: Location invariant before [L737-L737] b1 == 0 [2024-02-07 19:00:04,218 INFO L76 edCorrectnessWitness]: Location invariant before [L777-L777] b2 == 1 [2024-02-07 19:00:04,218 INFO L76 edCorrectnessWitness]: Location invariant before [L724-L724] (((0 <= y1) && (y1 <= 2)) && (y1 <= 127)) && ((y1 == 0 || y1 == 1) || y1 == 2) [2024-02-07 19:00:04,218 INFO L76 edCorrectnessWitness]: Location invariant after [L764-L764] ((0 <= X) && (X <= 1)) && (X == 0 || X == 1) [2024-02-07 19:00:04,218 INFO L76 edCorrectnessWitness]: Location invariant before [L826-L826] (((0 <= y2) && (y2 <= 2)) && (y2 <= 127)) && ((y2 == 0 || y2 == 1) || y2 == 2) [2024-02-07 19:00:04,218 INFO L76 edCorrectnessWitness]: Location invariant before [L787-L787] b2 == 0 [2024-02-07 19:00:04,218 INFO L76 edCorrectnessWitness]: Location invariant before [L817-L817] (((0 <= y) && (y <= 2)) && (y <= 127)) && ((y == 0 || y == 1) || y == 2) [2024-02-07 19:00:04,219 INFO L76 edCorrectnessWitness]: Location invariant before [L837-L837] y == 0 [2024-02-07 19:00:04,219 INFO L76 edCorrectnessWitness]: Location invariant before [L756-L756] (((0 <= y1) && (y1 <= 2)) && (y1 <= 127)) && ((y1 == 0 || y1 == 1) || y1 == 2) [2024-02-07 19:00:04,219 INFO L76 edCorrectnessWitness]: Location invariant before [L744-L744] ((0 <= b21) && (b21 <= 1)) && (b21 == 0 || b21 == 1) [2024-02-07 19:00:04,219 INFO L76 edCorrectnessWitness]: Location invariant before [L740-L740] ((0 <= b21) && (b21 <= 1)) && (b21 == 0 || b21 == 1) [2024-02-07 19:00:04,219 INFO L76 edCorrectnessWitness]: Location invariant before [L821-L821] (((0 <= y) && (y <= 2)) && (y <= 127)) && ((y == 0 || y == 1) || y == 2) [2024-02-07 19:00:04,259 INFO L181 MainTranslator]: Built tables and reachable declarations [2024-02-07 19:00:04,588 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 19:00:04,596 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 19:00:04,605 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-07 19:00:04,616 INFO L206 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local [2024-02-07 19:00:04,671 WARN L423 MainDispatcher]: Unable to annotate int with a witness entry [2024-02-07 19:00:04,671 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 19:00:04,696 WARN L423 MainDispatcher]: Unable to annotate int with a witness entry [2024-02-07 19:00:04,696 WARN L423 MainDispatcher]: Unable to annotate x1 = x with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-07 19:00:04,700 WARN L423 MainDispatcher]: Unable to annotate int with a witness entry [2024-02-07 19:00:04,700 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 19:00:04,713 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 19:00:04,717 WARN L423 MainDispatcher]: Unable to annotate int with a witness entry [2024-02-07 19:00:04,717 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 19:00:04,726 WARN L423 MainDispatcher]: Unable to annotate int with a witness entry [2024-02-07 19:00:04,727 WARN L423 MainDispatcher]: Unable to annotate x2 = x with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-07 19:00:04,728 WARN L423 MainDispatcher]: Unable to annotate int with a witness entry [2024-02-07 19:00:04,728 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 19:00:04,741 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 19:00:04,745 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-07 19:00:04,776 INFO L211 MainTranslator]: Completed translation [2024-02-07 19:00:04,777 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:00:04 WrapperNode [2024-02-07 19:00:04,777 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-07 19:00:04,778 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-07 19:00:04,778 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-07 19:00:04,778 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-07 19:00:04,783 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:00:04" (1/1) ... [2024-02-07 19:00:04,808 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:00:04" (1/1) ... [2024-02-07 19:00:04,827 INFO L138 Inliner]: procedures = 170, calls = 82, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 43 [2024-02-07 19:00:04,828 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-07 19:00:04,828 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-07 19:00:04,828 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-07 19:00:04,829 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-07 19:00:04,837 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:00:04" (1/1) ... [2024-02-07 19:00:04,838 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:00:04" (1/1) ... [2024-02-07 19:00:04,848 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:00:04" (1/1) ... [2024-02-07 19:00:04,874 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 19:00:04,876 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:00:04" (1/1) ... [2024-02-07 19:00:04,877 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:00:04" (1/1) ... [2024-02-07 19:00:04,888 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:00:04" (1/1) ... [2024-02-07 19:00:04,893 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:00:04" (1/1) ... [2024-02-07 19:00:04,895 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:00:04" (1/1) ... [2024-02-07 19:00:04,899 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:00:04" (1/1) ... [2024-02-07 19:00:04,902 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-07 19:00:04,906 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-07 19:00:04,906 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-07 19:00:04,906 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-07 19:00:04,907 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:00:04" (1/1) ... [2024-02-07 19:00:04,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 19:00:04,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 19:00:05,046 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 19:00:05,077 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 19:00:05,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-07 19:00:05,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-07 19:00:05,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-07 19:00:05,095 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2024-02-07 19:00:05,095 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2024-02-07 19:00:05,095 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-02-07 19:00:05,095 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-02-07 19:00:05,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-07 19:00:05,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-07 19:00:05,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-07 19:00:05,100 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-07 19:00:05,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-07 19:00:05,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-07 19:00:05,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-07 19:00:05,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-07 19:00:05,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-07 19:00:05,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-07 19:00:05,100 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-07 19:00:05,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-07 19:00:05,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-07 19:00:05,111 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 19:00:05,231 INFO L244 CfgBuilder]: Building ICFG [2024-02-07 19:00:05,232 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-07 19:00:05,511 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-07 19:00:05,511 INFO L293 CfgBuilder]: Performing block encoding [2024-02-07 19:00:05,673 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-07 19:00:05,673 INFO L320 CfgBuilder]: Removed 8 assume(true) statements. [2024-02-07 19:00:05,680 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 07:00:05 BoogieIcfgContainer [2024-02-07 19:00:05,680 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-07 19:00:05,683 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-07 19:00:05,683 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-07 19:00:05,686 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-07 19:00:05,686 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:00:02" (1/4) ... [2024-02-07 19:00:05,687 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17356508 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 07:00:05, skipping insertion in model container [2024-02-07 19:00:05,687 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 07:00:03" (2/4) ... [2024-02-07 19:00:05,688 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17356508 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 07:00:05, skipping insertion in model container [2024-02-07 19:00:05,688 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:00:04" (3/4) ... [2024-02-07 19:00:05,689 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17356508 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 07:00:05, skipping insertion in model container [2024-02-07 19:00:05,689 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 07:00:05" (4/4) ... [2024-02-07 19:00:05,690 INFO L112 eAbstractionObserver]: Analyzing ICFG lamport.i [2024-02-07 19:00:05,703 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-07 19:00:05,703 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 56 error locations. [2024-02-07 19:00:05,703 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-07 19:00:05,781 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-02-07 19:00:05,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 142 places, 153 transitions, 320 flow [2024-02-07 19:00:05,889 INFO L124 PetriNetUnfolderBase]: 18/151 cut-off events. [2024-02-07 19:00:05,894 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-02-07 19:00:05,900 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 19:00:05,900 INFO L82 GeneralOperation]: Start removeDead. Operand has 142 places, 153 transitions, 320 flow [2024-02-07 19:00:05,908 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 138 places, 149 transitions, 307 flow [2024-02-07 19:00:05,925 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 19:00:05,937 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;@51526dc7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 19:00:05,937 INFO L358 AbstractCegarLoop]: Starting to check reachability of 114 error locations. [2024-02-07 19:00:05,945 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 19:00:05,946 INFO L124 PetriNetUnfolderBase]: 1/12 cut-off events. [2024-02-07 19:00:05,946 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 19:00:05,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:00:05,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-02-07 19:00:05,948 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err23ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err23ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 111 more)] === [2024-02-07 19:00:05,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:00:05,954 INFO L85 PathProgramCache]: Analyzing trace with hash -358641166, now seen corresponding path program 1 times [2024-02-07 19:00:06,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:00:06,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884466316] [2024-02-07 19:00:06,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:00:06,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:00:06,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:00:06,228 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 19:00:06,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:00:06,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884466316] [2024-02-07 19:00:06,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884466316] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:00:06,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:00:06,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:00:06,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620107414] [2024-02-07 19:00:06,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:00:06,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-02-07 19:00:06,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:00:06,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-02-07 19:00:06,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-02-07 19:00:06,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 153 [2024-02-07 19:00:06,285 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 19:00:06,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:00:06,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 153 [2024-02-07 19:00:06,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:00:06,995 INFO L124 PetriNetUnfolderBase]: 2769/5763 cut-off events. [2024-02-07 19:00:06,995 INFO L125 PetriNetUnfolderBase]: For 67/67 co-relation queries the response was YES. [2024-02-07 19:00:07,003 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 19:00:07,028 INFO L140 encePairwiseOnDemand]: 121/153 looper letters, 67 selfloop transitions, 0 changer transitions 0/117 dead transitions. [2024-02-07 19:00:07,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 117 transitions, 377 flow [2024-02-07 19:00:07,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-02-07 19:00:07,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-02-07 19:00:07,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 203 transitions. [2024-02-07 19:00:07,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6633986928104575 [2024-02-07 19:00:07,042 INFO L175 Difference]: Start difference. First operand has 138 places, 149 transitions, 307 flow. Second operand 2 states and 203 transitions. [2024-02-07 19:00:07,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 117 transitions, 377 flow [2024-02-07 19:00:07,047 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 19:00:07,049 INFO L231 Difference]: Finished difference. Result has 110 places, 117 transitions, 238 flow [2024-02-07 19:00:07,051 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 19:00:07,057 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, -28 predicate places. [2024-02-07 19:00:07,057 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 117 transitions, 238 flow [2024-02-07 19:00:07,058 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 19:00:07,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:00:07,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:00:07,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-07 19:00:07,058 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err23ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 111 more)] === [2024-02-07 19:00:07,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:00:07,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1055796966, now seen corresponding path program 1 times [2024-02-07 19:00:07,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:00:07,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701887772] [2024-02-07 19:00:07,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:00:07,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:00:07,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:00:07,251 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 19:00:07,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:00:07,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701887772] [2024-02-07 19:00:07,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701887772] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:00:07,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:00:07,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 19:00:07,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184784301] [2024-02-07 19:00:07,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:00:07,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:00:07,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:00:07,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:00:07,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:00:07,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 153 [2024-02-07 19:00:07,256 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 19:00:07,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:00:07,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 153 [2024-02-07 19:00:07,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:00:07,853 INFO L124 PetriNetUnfolderBase]: 3334/7046 cut-off events. [2024-02-07 19:00:07,854 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2024-02-07 19:00:07,861 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 19:00:07,884 INFO L140 encePairwiseOnDemand]: 136/153 looper letters, 113 selfloop transitions, 5 changer transitions 2/170 dead transitions. [2024-02-07 19:00:07,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 170 transitions, 587 flow [2024-02-07 19:00:07,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:00:07,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:00:07,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 288 transitions. [2024-02-07 19:00:07,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6274509803921569 [2024-02-07 19:00:07,890 INFO L175 Difference]: Start difference. First operand has 110 places, 117 transitions, 238 flow. Second operand 3 states and 288 transitions. [2024-02-07 19:00:07,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 170 transitions, 587 flow [2024-02-07 19:00:07,893 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 19:00:07,897 INFO L231 Difference]: Finished difference. Result has 113 places, 119 transitions, 285 flow [2024-02-07 19:00:07,897 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 19:00:07,898 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, -25 predicate places. [2024-02-07 19:00:07,898 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 119 transitions, 285 flow [2024-02-07 19:00:07,899 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 19:00:07,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:00:07,899 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:00:07,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-07 19:00:07,899 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err23ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 111 more)] === [2024-02-07 19:00:07,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:00:07,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1630033204, now seen corresponding path program 1 times [2024-02-07 19:00:07,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:00:07,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589914493] [2024-02-07 19:00:07,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:00:07,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:00:07,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:00:08,049 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 19:00:08,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:00:08,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589914493] [2024-02-07 19:00:08,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589914493] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:00:08,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:00:08,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:00:08,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31878886] [2024-02-07 19:00:08,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:00:08,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:00:08,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:00:08,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:00:08,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:00:08,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 153 [2024-02-07 19:00:08,078 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 19:00:08,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:00:08,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 153 [2024-02-07 19:00:08,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:00:09,030 INFO L124 PetriNetUnfolderBase]: 4646/9612 cut-off events. [2024-02-07 19:00:09,030 INFO L125 PetriNetUnfolderBase]: For 1206/1282 co-relation queries the response was YES. [2024-02-07 19:00:09,040 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 19:00:09,068 INFO L140 encePairwiseOnDemand]: 133/153 looper letters, 188 selfloop transitions, 22 changer transitions 0/254 dead transitions. [2024-02-07 19:00:09,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 254 transitions, 1009 flow [2024-02-07 19:00:09,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 19:00:09,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 19:00:09,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 447 transitions. [2024-02-07 19:00:09,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5843137254901961 [2024-02-07 19:00:09,070 INFO L175 Difference]: Start difference. First operand has 113 places, 119 transitions, 285 flow. Second operand 5 states and 447 transitions. [2024-02-07 19:00:09,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 254 transitions, 1009 flow [2024-02-07 19:00:09,077 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 19:00:09,079 INFO L231 Difference]: Finished difference. Result has 120 places, 136 transitions, 448 flow [2024-02-07 19:00:09,080 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 19:00:09,080 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, -18 predicate places. [2024-02-07 19:00:09,080 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 136 transitions, 448 flow [2024-02-07 19:00:09,081 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 19:00:09,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:00:09,081 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:00:09,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-07 19:00:09,081 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr2Err3ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err23ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 111 more)] === [2024-02-07 19:00:09,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:00:09,082 INFO L85 PathProgramCache]: Analyzing trace with hash -2108941767, now seen corresponding path program 1 times [2024-02-07 19:00:09,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:00:09,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395970753] [2024-02-07 19:00:09,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:00:09,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:00:09,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:00:09,207 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 19:00:09,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:00:09,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395970753] [2024-02-07 19:00:09,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395970753] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:00:09,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:00:09,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:00:09,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284144748] [2024-02-07 19:00:09,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:00:09,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:00:09,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:00:09,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:00:09,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:00:09,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 153 [2024-02-07 19:00:09,232 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 19:00:09,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:00:09,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 153 [2024-02-07 19:00:09,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:00:10,202 INFO L124 PetriNetUnfolderBase]: 5684/11860 cut-off events. [2024-02-07 19:00:10,202 INFO L125 PetriNetUnfolderBase]: For 4496/4720 co-relation queries the response was YES. [2024-02-07 19:00:10,216 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 19:00:10,252 INFO L140 encePairwiseOnDemand]: 133/153 looper letters, 196 selfloop transitions, 27 changer transitions 0/269 dead transitions. [2024-02-07 19:00:10,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 269 transitions, 1299 flow [2024-02-07 19:00:10,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 19:00:10,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 19:00:10,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 443 transitions. [2024-02-07 19:00:10,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5790849673202615 [2024-02-07 19:00:10,255 INFO L175 Difference]: Start difference. First operand has 120 places, 136 transitions, 448 flow. Second operand 5 states and 443 transitions. [2024-02-07 19:00:10,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 269 transitions, 1299 flow [2024-02-07 19:00:10,268 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 19:00:10,272 INFO L231 Difference]: Finished difference. Result has 127 places, 155 transitions, 651 flow [2024-02-07 19:00:10,272 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 19:00:10,273 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, -11 predicate places. [2024-02-07 19:00:10,273 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 155 transitions, 651 flow [2024-02-07 19:00:10,274 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 19:00:10,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:00:10,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:00:10,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-07 19:00:10,274 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err10ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err23ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 111 more)] === [2024-02-07 19:00:10,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:00:10,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1419711426, now seen corresponding path program 1 times [2024-02-07 19:00:10,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:00:10,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264277487] [2024-02-07 19:00:10,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:00:10,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:00:10,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:00:10,338 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 19:00:10,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:00:10,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264277487] [2024-02-07 19:00:10,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264277487] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:00:10,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:00:10,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:00:10,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96055868] [2024-02-07 19:00:10,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:00:10,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:00:10,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:00:10,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:00:10,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:00:10,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 153 [2024-02-07 19:00:10,342 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 19:00:10,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:00:10,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 153 [2024-02-07 19:00:10,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:00:11,746 INFO L124 PetriNetUnfolderBase]: 8737/19121 cut-off events. [2024-02-07 19:00:11,746 INFO L125 PetriNetUnfolderBase]: For 16687/17459 co-relation queries the response was YES. [2024-02-07 19:00:11,775 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 19:00:11,828 INFO L140 encePairwiseOnDemand]: 149/153 looper letters, 196 selfloop transitions, 2 changer transitions 0/252 dead transitions. [2024-02-07 19:00:11,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 252 transitions, 1524 flow [2024-02-07 19:00:11,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:00:11,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:00:11,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 288 transitions. [2024-02-07 19:00:11,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6274509803921569 [2024-02-07 19:00:11,830 INFO L175 Difference]: Start difference. First operand has 127 places, 155 transitions, 651 flow. Second operand 3 states and 288 transitions. [2024-02-07 19:00:11,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 252 transitions, 1524 flow [2024-02-07 19:00:11,847 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 19:00:11,849 INFO L231 Difference]: Finished difference. Result has 131 places, 157 transitions, 671 flow [2024-02-07 19:00:11,849 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 19:00:11,851 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, -7 predicate places. [2024-02-07 19:00:11,852 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 157 transitions, 671 flow [2024-02-07 19:00:11,852 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 19:00:11,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:00:11,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:00:11,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-07 19:00:11,852 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err23ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 111 more)] === [2024-02-07 19:00:11,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:00:11,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1061382044, now seen corresponding path program 1 times [2024-02-07 19:00:11,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:00:11,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043984280] [2024-02-07 19:00:11,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:00:11,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:00:11,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:00:11,920 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 19:00:11,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:00:11,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043984280] [2024-02-07 19:00:11,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043984280] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:00:11,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:00:11,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 19:00:11,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088394064] [2024-02-07 19:00:11,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:00:11,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 19:00:11,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:00:11,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 19:00:11,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-02-07 19:00:11,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 153 [2024-02-07 19:00:11,942 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 19:00:11,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:00:11,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 153 [2024-02-07 19:00:11,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:00:13,568 INFO L124 PetriNetUnfolderBase]: 9310/19142 cut-off events. [2024-02-07 19:00:13,568 INFO L125 PetriNetUnfolderBase]: For 17734/18148 co-relation queries the response was YES. [2024-02-07 19:00:13,617 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 19:00:13,693 INFO L140 encePairwiseOnDemand]: 144/153 looper letters, 313 selfloop transitions, 14 changer transitions 0/369 dead transitions. [2024-02-07 19:00:13,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 369 transitions, 2328 flow [2024-02-07 19:00:13,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 19:00:13,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 19:00:13,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 492 transitions. [2024-02-07 19:00:13,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5359477124183006 [2024-02-07 19:00:13,701 INFO L175 Difference]: Start difference. First operand has 131 places, 157 transitions, 671 flow. Second operand 6 states and 492 transitions. [2024-02-07 19:00:13,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 369 transitions, 2328 flow [2024-02-07 19:00:13,728 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 19:00:13,731 INFO L231 Difference]: Finished difference. Result has 138 places, 169 transitions, 812 flow [2024-02-07 19:00:13,731 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 19:00:13,734 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, 0 predicate places. [2024-02-07 19:00:13,734 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 169 transitions, 812 flow [2024-02-07 19:00:13,734 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 19:00:13,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:00:13,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:00:13,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-07 19:00:13,735 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr2Err10ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err23ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 111 more)] === [2024-02-07 19:00:13,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:00:13,735 INFO L85 PathProgramCache]: Analyzing trace with hash -701865674, now seen corresponding path program 1 times [2024-02-07 19:00:13,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:00:13,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013332920] [2024-02-07 19:00:13,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:00:13,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:00:13,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:00:13,779 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 19:00:13,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:00:13,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013332920] [2024-02-07 19:00:13,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013332920] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:00:13,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:00:13,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:00:13,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191717265] [2024-02-07 19:00:13,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:00:13,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:00:13,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:00:13,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:00:13,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:00:13,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 153 [2024-02-07 19:00:13,782 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 19:00:13,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:00:13,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 153 [2024-02-07 19:00:13,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:00:14,925 INFO L124 PetriNetUnfolderBase]: 7002/15144 cut-off events. [2024-02-07 19:00:14,925 INFO L125 PetriNetUnfolderBase]: For 18478/19206 co-relation queries the response was YES. [2024-02-07 19:00:14,952 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 19:00:14,991 INFO L140 encePairwiseOnDemand]: 149/153 looper letters, 175 selfloop transitions, 5 changer transitions 0/237 dead transitions. [2024-02-07 19:00:14,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 237 transitions, 1534 flow [2024-02-07 19:00:14,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:00:14,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:00:14,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 270 transitions. [2024-02-07 19:00:14,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5882352941176471 [2024-02-07 19:00:14,993 INFO L175 Difference]: Start difference. First operand has 138 places, 169 transitions, 812 flow. Second operand 3 states and 270 transitions. [2024-02-07 19:00:14,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 237 transitions, 1534 flow [2024-02-07 19:00:15,017 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 19:00:15,019 INFO L231 Difference]: Finished difference. Result has 140 places, 169 transitions, 837 flow [2024-02-07 19:00:15,020 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 19:00:15,020 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, 2 predicate places. [2024-02-07 19:00:15,021 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 169 transitions, 837 flow [2024-02-07 19:00:15,021 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 19:00:15,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:00:15,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:00:15,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-07 19:00:15,021 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr2Err11ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err23ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 111 more)] === [2024-02-07 19:00:15,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:00:15,022 INFO L85 PathProgramCache]: Analyzing trace with hash -282998687, now seen corresponding path program 1 times [2024-02-07 19:00:15,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:00:15,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564631544] [2024-02-07 19:00:15,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:00:15,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:00:15,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:00:15,106 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 19:00:15,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:00:15,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564631544] [2024-02-07 19:00:15,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564631544] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:00:15,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:00:15,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 19:00:15,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610187098] [2024-02-07 19:00:15,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:00:15,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 19:00:15,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:00:15,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 19:00:15,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-02-07 19:00:15,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 153 [2024-02-07 19:00:15,141 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 19:00:15,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:00:15,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 153 [2024-02-07 19:00:15,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:00:17,402 INFO L124 PetriNetUnfolderBase]: 10264/22098 cut-off events. [2024-02-07 19:00:17,403 INFO L125 PetriNetUnfolderBase]: For 27114/27712 co-relation queries the response was YES. [2024-02-07 19:00:17,481 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 19:00:17,651 INFO L140 encePairwiseOnDemand]: 142/153 looper letters, 308 selfloop transitions, 42 changer transitions 0/395 dead transitions. [2024-02-07 19:00:17,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 395 transitions, 2537 flow [2024-02-07 19:00:17,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-07 19:00:17,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-07 19:00:17,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 722 transitions. [2024-02-07 19:00:17,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4718954248366013 [2024-02-07 19:00:17,666 INFO L175 Difference]: Start difference. First operand has 140 places, 169 transitions, 837 flow. Second operand 10 states and 722 transitions. [2024-02-07 19:00:17,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 395 transitions, 2537 flow [2024-02-07 19:00:17,760 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 19:00:17,789 INFO L231 Difference]: Finished difference. Result has 155 places, 198 transitions, 1281 flow [2024-02-07 19:00:17,790 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 19:00:17,792 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, 17 predicate places. [2024-02-07 19:00:17,792 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 198 transitions, 1281 flow [2024-02-07 19:00:17,793 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 19:00:17,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:00:17,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:00:17,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-02-07 19:00:17,793 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err23ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err23ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 111 more)] === [2024-02-07 19:00:17,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:00:17,794 INFO L85 PathProgramCache]: Analyzing trace with hash 84035659, now seen corresponding path program 1 times [2024-02-07 19:00:17,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:00:17,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444275085] [2024-02-07 19:00:17,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:00:17,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:00:17,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:00:17,841 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 19:00:17,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:00:17,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444275085] [2024-02-07 19:00:17,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444275085] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:00:17,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:00:17,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:00:17,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795428605] [2024-02-07 19:00:17,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:00:17,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:00:17,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:00:17,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:00:17,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:00:17,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 153 [2024-02-07 19:00:17,859 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 19:00:17,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:00:17,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 153 [2024-02-07 19:00:17,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:00:20,658 INFO L124 PetriNetUnfolderBase]: 11689/25083 cut-off events. [2024-02-07 19:00:20,658 INFO L125 PetriNetUnfolderBase]: For 42192/42586 co-relation queries the response was YES. [2024-02-07 19:00:20,737 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 19:00:20,806 INFO L140 encePairwiseOnDemand]: 145/153 looper letters, 182 selfloop transitions, 3 changer transitions 23/257 dead transitions. [2024-02-07 19:00:20,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 257 transitions, 2132 flow [2024-02-07 19:00:20,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:00:20,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:00:20,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 246 transitions. [2024-02-07 19:00:20,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5359477124183006 [2024-02-07 19:00:20,808 INFO L175 Difference]: Start difference. First operand has 155 places, 198 transitions, 1281 flow. Second operand 3 states and 246 transitions. [2024-02-07 19:00:20,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 257 transitions, 2132 flow [2024-02-07 19:00:20,867 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 19:00:20,869 INFO L231 Difference]: Finished difference. Result has 159 places, 185 transitions, 1192 flow [2024-02-07 19:00:20,870 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 19:00:20,870 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, 21 predicate places. [2024-02-07 19:00:20,870 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 185 transitions, 1192 flow [2024-02-07 19:00:20,871 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 19:00:20,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:00:20,871 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 19:00:20,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-02-07 19:00:20,871 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr2Err23ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err23ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 111 more)] === [2024-02-07 19:00:20,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:00:20,872 INFO L85 PathProgramCache]: Analyzing trace with hash 207643135, now seen corresponding path program 1 times [2024-02-07 19:00:20,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:00:20,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059940948] [2024-02-07 19:00:20,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:00:20,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:00:20,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:00:20,906 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 19:00:20,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:00:20,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059940948] [2024-02-07 19:00:20,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059940948] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:00:20,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:00:20,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:00:20,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144850763] [2024-02-07 19:00:20,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:00:20,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:00:20,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:00:20,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:00:20,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:00:20,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 153 [2024-02-07 19:00:20,922 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 19:00:20,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:00:20,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 153 [2024-02-07 19:00:20,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:00:23,453 INFO L124 PetriNetUnfolderBase]: 9607/20555 cut-off events. [2024-02-07 19:00:23,454 INFO L125 PetriNetUnfolderBase]: For 38525/38847 co-relation queries the response was YES. [2024-02-07 19:00:23,534 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 19:00:23,586 INFO L140 encePairwiseOnDemand]: 146/153 looper letters, 154 selfloop transitions, 2 changer transitions 34/239 dead transitions. [2024-02-07 19:00:23,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 239 transitions, 1991 flow [2024-02-07 19:00:23,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:00:23,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:00:23,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 242 transitions. [2024-02-07 19:00:23,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5272331154684096 [2024-02-07 19:00:23,606 INFO L175 Difference]: Start difference. First operand has 159 places, 185 transitions, 1192 flow. Second operand 3 states and 242 transitions. [2024-02-07 19:00:23,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 239 transitions, 1991 flow [2024-02-07 19:00:23,697 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 19:00:23,716 INFO L231 Difference]: Finished difference. Result has 156 places, 167 transitions, 1070 flow [2024-02-07 19:00:23,717 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 19:00:23,718 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, 18 predicate places. [2024-02-07 19:00:23,719 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 167 transitions, 1070 flow [2024-02-07 19:00:23,719 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 19:00:23,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:00:23,719 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 19:00:23,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-02-07 19:00:23,719 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thr2Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err23ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 111 more)] === [2024-02-07 19:00:23,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:00:23,720 INFO L85 PathProgramCache]: Analyzing trace with hash -825931069, now seen corresponding path program 1 times [2024-02-07 19:00:23,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:00:23,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739640400] [2024-02-07 19:00:23,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:00:23,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:00:23,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:00:23,776 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 19:00:23,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:00:23,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739640400] [2024-02-07 19:00:23,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739640400] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:00:23,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:00:23,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:00:23,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240789447] [2024-02-07 19:00:23,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:00:23,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:00:23,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:00:23,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:00:23,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:00:23,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 153 [2024-02-07 19:00:23,794 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 19:00:23,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:00:23,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 153 [2024-02-07 19:00:23,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:00:26,248 INFO L124 PetriNetUnfolderBase]: 9000/20664 cut-off events. [2024-02-07 19:00:26,249 INFO L125 PetriNetUnfolderBase]: For 47668/48524 co-relation queries the response was YES. [2024-02-07 19:00:26,346 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 19:00:26,410 INFO L140 encePairwiseOnDemand]: 137/153 looper letters, 159 selfloop transitions, 22 changer transitions 1/236 dead transitions. [2024-02-07 19:00:26,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 236 transitions, 1904 flow [2024-02-07 19:00:26,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:00:26,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:00:26,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 280 transitions. [2024-02-07 19:00:26,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6100217864923747 [2024-02-07 19:00:26,413 INFO L175 Difference]: Start difference. First operand has 156 places, 167 transitions, 1070 flow. Second operand 3 states and 280 transitions. [2024-02-07 19:00:26,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 236 transitions, 1904 flow [2024-02-07 19:00:26,497 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 19:00:26,500 INFO L231 Difference]: Finished difference. Result has 158 places, 181 transitions, 1390 flow [2024-02-07 19:00:26,500 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 19:00:26,501 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, 20 predicate places. [2024-02-07 19:00:26,501 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 181 transitions, 1390 flow [2024-02-07 19:00:26,501 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 19:00:26,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:00:26,502 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 19:00:26,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-02-07 19:00:26,502 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err23ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 111 more)] === [2024-02-07 19:00:26,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:00:26,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1191204534, now seen corresponding path program 1 times [2024-02-07 19:00:26,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:00:26,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63026369] [2024-02-07 19:00:26,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:00:26,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:00:26,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:00:26,550 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 19:00:26,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:00:26,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63026369] [2024-02-07 19:00:26,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63026369] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:00:26,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:00:26,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:00:26,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845099065] [2024-02-07 19:00:26,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:00:26,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:00:26,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:00:26,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:00:26,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:00:26,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 153 [2024-02-07 19:00:26,554 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 19:00:26,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:00:26,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 153 [2024-02-07 19:00:26,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:00:28,590 INFO L124 PetriNetUnfolderBase]: 7089/16695 cut-off events. [2024-02-07 19:00:28,590 INFO L125 PetriNetUnfolderBase]: For 54874/55860 co-relation queries the response was YES. [2024-02-07 19:00:28,657 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 19:00:28,701 INFO L140 encePairwiseOnDemand]: 137/153 looper letters, 148 selfloop transitions, 19 changer transitions 0/221 dead transitions. [2024-02-07 19:00:28,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 221 transitions, 1885 flow [2024-02-07 19:00:28,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:00:28,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:00:28,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 268 transitions. [2024-02-07 19:00:28,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5838779956427015 [2024-02-07 19:00:28,703 INFO L175 Difference]: Start difference. First operand has 158 places, 181 transitions, 1390 flow. Second operand 3 states and 268 transitions. [2024-02-07 19:00:28,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 221 transitions, 1885 flow [2024-02-07 19:00:28,761 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 19:00:28,763 INFO L231 Difference]: Finished difference. Result has 146 places, 167 transitions, 1278 flow [2024-02-07 19:00:28,764 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 19:00:28,764 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, 8 predicate places. [2024-02-07 19:00:28,764 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 167 transitions, 1278 flow [2024-02-07 19:00:28,765 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 19:00:28,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:00:28,765 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 19:00:28,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-02-07 19:00:28,765 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thr2Err3ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err23ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 111 more)] === [2024-02-07 19:00:28,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:00:28,766 INFO L85 PathProgramCache]: Analyzing trace with hash 165941348, now seen corresponding path program 1 times [2024-02-07 19:00:28,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:00:28,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357642053] [2024-02-07 19:00:28,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:00:28,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:00:28,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:00:28,805 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 19:00:28,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:00:28,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357642053] [2024-02-07 19:00:28,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357642053] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:00:28,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:00:28,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 19:00:28,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361041208] [2024-02-07 19:00:28,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:00:28,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:00:28,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:00:28,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:00:28,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:00:28,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 153 [2024-02-07 19:00:28,828 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 19:00:28,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:00:28,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 153 [2024-02-07 19:00:28,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:00:31,151 INFO L124 PetriNetUnfolderBase]: 8427/19261 cut-off events. [2024-02-07 19:00:31,152 INFO L125 PetriNetUnfolderBase]: For 54598/55718 co-relation queries the response was YES. [2024-02-07 19:00:31,214 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 19:00:31,263 INFO L140 encePairwiseOnDemand]: 138/153 looper letters, 182 selfloop transitions, 31 changer transitions 1/263 dead transitions. [2024-02-07 19:00:31,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 263 transitions, 2166 flow [2024-02-07 19:00:31,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 19:00:31,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 19:00:31,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 392 transitions. [2024-02-07 19:00:31,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5124183006535947 [2024-02-07 19:00:31,265 INFO L175 Difference]: Start difference. First operand has 146 places, 167 transitions, 1278 flow. Second operand 5 states and 392 transitions. [2024-02-07 19:00:31,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 263 transitions, 2166 flow [2024-02-07 19:00:31,323 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 19:00:31,326 INFO L231 Difference]: Finished difference. Result has 152 places, 176 transitions, 1457 flow [2024-02-07 19:00:31,326 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 19:00:31,327 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, 14 predicate places. [2024-02-07 19:00:31,327 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 176 transitions, 1457 flow [2024-02-07 19:00:31,327 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 19:00:31,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:00:31,328 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 19:00:31,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-02-07 19:00:31,328 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err23ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 111 more)] === [2024-02-07 19:00:31,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:00:31,329 INFO L85 PathProgramCache]: Analyzing trace with hash 165944194, now seen corresponding path program 1 times [2024-02-07 19:00:31,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:00:31,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492444567] [2024-02-07 19:00:31,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:00:31,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:00:31,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:00:31,388 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 19:00:31,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:00:31,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492444567] [2024-02-07 19:00:31,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492444567] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:00:31,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:00:31,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 19:00:31,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186937081] [2024-02-07 19:00:31,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:00:31,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 19:00:31,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:00:31,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 19:00:31,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-02-07 19:00:31,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 153 [2024-02-07 19:00:31,413 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 19:00:31,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:00:31,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 153 [2024-02-07 19:00:31,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:00:34,645 INFO L124 PetriNetUnfolderBase]: 13124/27696 cut-off events. [2024-02-07 19:00:34,645 INFO L125 PetriNetUnfolderBase]: For 90392/91335 co-relation queries the response was YES. [2024-02-07 19:00:34,741 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 19:00:34,808 INFO L140 encePairwiseOnDemand]: 143/153 looper letters, 283 selfloop transitions, 25 changer transitions 3/351 dead transitions. [2024-02-07 19:00:34,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 351 transitions, 3364 flow [2024-02-07 19:00:34,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 19:00:34,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 19:00:34,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 389 transitions. [2024-02-07 19:00:34,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5084967320261438 [2024-02-07 19:00:34,811 INFO L175 Difference]: Start difference. First operand has 152 places, 176 transitions, 1457 flow. Second operand 5 states and 389 transitions. [2024-02-07 19:00:34,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 351 transitions, 3364 flow [2024-02-07 19:00:34,911 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 19:00:34,916 INFO L231 Difference]: Finished difference. Result has 159 places, 185 transitions, 1613 flow [2024-02-07 19:00:34,917 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 19:00:34,917 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, 21 predicate places. [2024-02-07 19:00:34,918 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 185 transitions, 1613 flow [2024-02-07 19:00:34,918 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 19:00:34,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:00:34,918 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 19:00:34,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-02-07 19:00:34,919 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thr1Err11ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err23ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 111 more)] === [2024-02-07 19:00:34,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:00:34,944 INFO L85 PathProgramCache]: Analyzing trace with hash 2081888720, now seen corresponding path program 2 times [2024-02-07 19:00:34,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:00:34,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395920739] [2024-02-07 19:00:34,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:00:34,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:00:34,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:00:35,012 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 19:00:35,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:00:35,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395920739] [2024-02-07 19:00:35,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395920739] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:00:35,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:00:35,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 19:00:35,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752142826] [2024-02-07 19:00:35,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:00:35,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 19:00:35,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:00:35,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 19:00:35,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-02-07 19:00:35,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 153 [2024-02-07 19:00:35,034 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 19:00:35,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:00:35,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 153 [2024-02-07 19:00:35,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:00:38,754 INFO L124 PetriNetUnfolderBase]: 13762/28390 cut-off events. [2024-02-07 19:00:38,754 INFO L125 PetriNetUnfolderBase]: For 98934/99793 co-relation queries the response was YES. [2024-02-07 19:00:38,920 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 19:00:39,019 INFO L140 encePairwiseOnDemand]: 143/153 looper letters, 289 selfloop transitions, 32 changer transitions 2/363 dead transitions. [2024-02-07 19:00:39,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 363 transitions, 3720 flow [2024-02-07 19:00:39,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 19:00:39,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 19:00:39,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 388 transitions. [2024-02-07 19:00:39,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5071895424836601 [2024-02-07 19:00:39,029 INFO L175 Difference]: Start difference. First operand has 159 places, 185 transitions, 1613 flow. Second operand 5 states and 388 transitions. [2024-02-07 19:00:39,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 363 transitions, 3720 flow [2024-02-07 19:00:39,191 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 19:00:39,194 INFO L231 Difference]: Finished difference. Result has 164 places, 189 transitions, 1721 flow [2024-02-07 19:00:39,195 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 19:00:39,195 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, 26 predicate places. [2024-02-07 19:00:39,195 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 189 transitions, 1721 flow [2024-02-07 19:00:39,196 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 19:00:39,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:00:39,196 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 19:00:39,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-02-07 19:00:39,196 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err23ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 111 more)] === [2024-02-07 19:00:39,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:00:39,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1727364328, now seen corresponding path program 1 times [2024-02-07 19:00:39,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:00:39,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067172674] [2024-02-07 19:00:39,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:00:39,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:00:39,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:00:39,237 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 19:00:39,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:00:39,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067172674] [2024-02-07 19:00:39,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067172674] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:00:39,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:00:39,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 19:00:39,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414628538] [2024-02-07 19:00:39,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:00:39,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:00:39,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:00:39,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:00:39,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:00:39,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 153 [2024-02-07 19:00:39,256 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 19:00:39,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:00:39,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 153 [2024-02-07 19:00:39,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:00:43,447 INFO L124 PetriNetUnfolderBase]: 12780/27784 cut-off events. [2024-02-07 19:00:43,447 INFO L125 PetriNetUnfolderBase]: For 102868/104084 co-relation queries the response was YES. [2024-02-07 19:00:43,645 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 19:00:43,733 INFO L140 encePairwiseOnDemand]: 138/153 looper letters, 211 selfloop transitions, 32 changer transitions 5/293 dead transitions. [2024-02-07 19:00:43,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 293 transitions, 2950 flow [2024-02-07 19:00:43,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 19:00:43,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 19:00:43,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 390 transitions. [2024-02-07 19:00:43,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5098039215686274 [2024-02-07 19:00:43,735 INFO L175 Difference]: Start difference. First operand has 164 places, 189 transitions, 1721 flow. Second operand 5 states and 390 transitions. [2024-02-07 19:00:43,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 293 transitions, 2950 flow [2024-02-07 19:00:43,903 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 19:00:43,907 INFO L231 Difference]: Finished difference. Result has 169 places, 201 transitions, 1942 flow [2024-02-07 19:00:43,907 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 19:00:43,907 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, 31 predicate places. [2024-02-07 19:00:43,908 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 201 transitions, 1942 flow [2024-02-07 19:00:43,908 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 19:00:43,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:00:43,908 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 19:00:43,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-02-07 19:00:43,908 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thr2Err11ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err23ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 111 more)] === [2024-02-07 19:00:43,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:00:43,909 INFO L85 PathProgramCache]: Analyzing trace with hash 291921168, now seen corresponding path program 1 times [2024-02-07 19:00:43,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:00:43,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901441644] [2024-02-07 19:00:43,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:00:43,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:00:43,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:00:44,013 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 19:00:44,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:00:44,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901441644] [2024-02-07 19:00:44,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901441644] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:00:44,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:00:44,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 19:00:44,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306124287] [2024-02-07 19:00:44,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:00:44,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 19:00:44,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:00:44,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 19:00:44,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-02-07 19:00:44,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 153 [2024-02-07 19:00:44,043 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 19:00:44,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:00:44,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 153 [2024-02-07 19:00:44,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:00:49,496 INFO L124 PetriNetUnfolderBase]: 17368/34772 cut-off events. [2024-02-07 19:00:49,496 INFO L125 PetriNetUnfolderBase]: For 140614/141420 co-relation queries the response was YES. [2024-02-07 19:00:50,059 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 19:00:50,171 INFO L140 encePairwiseOnDemand]: 137/153 looper letters, 307 selfloop transitions, 79 changer transitions 30/458 dead transitions. [2024-02-07 19:00:50,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 458 transitions, 4392 flow [2024-02-07 19:00:50,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-07 19:00:50,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-07 19:00:50,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 662 transitions. [2024-02-07 19:00:50,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4807552650689906 [2024-02-07 19:00:50,173 INFO L175 Difference]: Start difference. First operand has 169 places, 201 transitions, 1942 flow. Second operand 9 states and 662 transitions. [2024-02-07 19:00:50,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 458 transitions, 4392 flow [2024-02-07 19:00:50,477 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 19:00:50,483 INFO L231 Difference]: Finished difference. Result has 182 places, 226 transitions, 2570 flow [2024-02-07 19:00:50,483 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 19:00:50,484 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, 44 predicate places. [2024-02-07 19:00:50,484 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 226 transitions, 2570 flow [2024-02-07 19:00:50,484 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 19:00:50,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:00:50,485 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 19:00:50,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-02-07 19:00:50,485 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thr2Err11ASSERT_VIOLATIONWITNESS_INVARIANT === [thr2Err23ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (and 111 more)] === [2024-02-07 19:00:50,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:00:50,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1970370980, now seen corresponding path program 2 times [2024-02-07 19:00:50,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:00:50,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384265201] [2024-02-07 19:00:50,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:00:50,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:00:50,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:00:50,531 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 19:00:50,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:00:50,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384265201] [2024-02-07 19:00:50,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384265201] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:00:50,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:00:50,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 19:00:50,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289013044] [2024-02-07 19:00:50,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:00:50,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 19:00:50,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:00:50,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 19:00:50,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-02-07 19:00:50,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 153 [2024-02-07 19:00:50,554 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 19:00:50,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:00:50,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 153 [2024-02-07 19:00:50,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:00:56,115 INFO L124 PetriNetUnfolderBase]: 18480/37080 cut-off events. [2024-02-07 19:00:56,115 INFO L125 PetriNetUnfolderBase]: For 182222/183046 co-relation queries the response was YES. [2024-02-07 19:00:56,343 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.