./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/parallel-bakery-3.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/mutex-meet/parallel-bakery-3.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cde23df1 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/weaver/parallel-bakery-3.wvr.c ./goblint.2024-05-21_14-57-05.files/mutex-meet/parallel-bakery-3.wvr.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-cde23df-m [2024-06-14 14:16:40,531 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-14 14:16:40,623 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-14 14:16:40,626 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-14 14:16:40,627 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-14 14:16:40,657 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-14 14:16:40,657 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-14 14:16:40,658 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-14 14:16:40,658 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-14 14:16:40,659 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-14 14:16:40,659 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-14 14:16:40,659 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-14 14:16:40,660 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-14 14:16:40,660 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-14 14:16:40,661 INFO L153 SettingsManager]: * Use SBE=true [2024-06-14 14:16:40,661 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-14 14:16:40,661 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-14 14:16:40,662 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-14 14:16:40,662 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-14 14:16:40,663 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-14 14:16:40,663 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-14 14:16:40,663 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-14 14:16:40,664 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-14 14:16:40,664 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-14 14:16:40,664 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-14 14:16:40,664 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-14 14:16:40,665 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-14 14:16:40,665 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-14 14:16:40,665 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-14 14:16:40,665 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-14 14:16:40,666 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-14 14:16:40,666 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-14 14:16:40,666 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 14:16:40,667 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-14 14:16:40,667 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-14 14:16:40,667 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-14 14:16:40,667 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-14 14:16:40,668 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-14 14:16:40,668 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-14 14:16:40,668 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-14 14:16:40,668 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-14 14:16:40,669 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-14 14:16:40,669 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-14 14:16:40,669 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-14 14:16:40,926 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-14 14:16:40,952 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-14 14:16:40,954 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-14 14:16:40,956 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-14 14:16:40,956 INFO L274 PluginConnector]: CDTParser initialized [2024-06-14 14:16:40,957 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-bakery-3.wvr.c [2024-06-14 14:16:42,081 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-14 14:16:42,281 INFO L384 CDTParser]: Found 1 translation units. [2024-06-14 14:16:42,281 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bakery-3.wvr.c [2024-06-14 14:16:42,288 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7c3d519d/396a396742d0428d9b8ad45cb68467b4/FLAG6c41077bd [2024-06-14 14:16:42,300 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7c3d519d/396a396742d0428d9b8ad45cb68467b4 [2024-06-14 14:16:42,306 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-14 14:16:42,308 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-14 14:16:42,308 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/mutex-meet/parallel-bakery-3.wvr.yml/witness.yml [2024-06-14 14:16:42,419 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-14 14:16:42,420 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-14 14:16:42,423 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-14 14:16:42,423 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-14 14:16:42,428 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-14 14:16:42,428 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 02:16:42" (1/2) ... [2024-06-14 14:16:42,429 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b9d53d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:16:42, skipping insertion in model container [2024-06-14 14:16:42,430 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 02:16:42" (1/2) ... [2024-06-14 14:16:42,431 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@554bbf54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 02:16:42, skipping insertion in model container [2024-06-14 14:16:42,433 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 02:16:42" (2/2) ... [2024-06-14 14:16:42,434 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b9d53d0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 02:16:42, skipping insertion in model container [2024-06-14 14:16:42,434 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 02:16:42" (2/2) ... [2024-06-14 14:16:42,434 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-14 14:16:42,452 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-14 14:16:42,457 INFO L97 edCorrectnessWitness]: Location invariant before [L190-L190] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((2147483648LL + (long long )e1) + (long long )n1 >= 0LL && (2147483648LL + (long long )e1) + (long long )n2 >= 0LL) && (2147483648LL + (long long )e1) + (long long )n3 >= 0LL) && (2147483648LL + (long long )e1) + (long long )i >= 0LL) && (2147483648LL + (long long )e1) + (long long )i1 >= 0LL) && (2147483648LL + (long long )e1) + (long long )i2 >= 0LL) && (2147483648LL + (long long )e1) + (long long )i3 >= 0LL) && (2147483648LL + (long long )e2) + (long long )n1 >= 0LL) && (2147483648LL + (long long )e2) + (long long )n2 >= 0LL) && (2147483648LL + (long long )e2) + (long long )n3 >= 0LL) && (2147483648LL + (long long )e2) + (long long )i >= 0LL) && (2147483648LL + (long long )e2) + (long long )i1 >= 0LL) && (2147483648LL + (long long )e2) + (long long )i2 >= 0LL) && (2147483648LL + (long long )e2) + (long long )i3 >= 0LL) && (2147483648LL + (long long )e3) + (long long )n1 >= 0LL) && (2147483648LL + (long long )e3) + (long long )n2 >= 0LL) && (2147483648LL + (long long )e3) + (long long )n3 >= 0LL) && (2147483648LL + (long long )e3) + (long long )i >= 0LL) && (2147483648LL + (long long )e3) + (long long )i1 >= 0LL) && (2147483648LL + (long long )e3) + (long long )i2 >= 0LL) && (2147483648LL + (long long )e3) + (long long )i3 >= 0LL) && (4294967296LL + (long long )n1) + (long long )n2 >= 0LL) && (4294967296LL + (long long )n1) + (long long )n3 >= 0LL) && (4294967296LL + (long long )n2) + (long long )n3 >= 0LL) && (4294967296LL + (long long )i) + (long long )n1 >= 0LL) && (4294967296LL + (long long )i) + (long long )n2 >= 0LL) && (4294967296LL + (long long )i) + (long long )n3 >= 0LL) && (4294967296LL + (long long )i) + (long long )i1 >= 0LL) && (4294967296LL + (long long )i) + (long long )i2 >= 0LL) && (4294967296LL + (long long )i) + (long long )i3 >= 0LL) && (4294967296LL + (long long )i1) + (long long )n1 >= 0LL) && (4294967296LL + (long long )i1) + (long long )n2 >= 0LL) && (4294967296LL + (long long )i1) + (long long )n3 >= 0LL) && (4294967296LL + (long long )i1) + (long long )i2 >= 0LL) && (4294967296LL + (long long )i1) + (long long )i3 >= 0LL) && (4294967296LL + (long long )i2) + (long long )n1 >= 0LL) && (4294967296LL + (long long )i2) + (long long )n2 >= 0LL) && (4294967296LL + (long long )i2) + (long long )n3 >= 0LL) && (4294967296LL + (long long )i2) + (long long )i3 >= 0LL) && (4294967296LL + (long long )i3) + (long long )n1 >= 0LL) && (4294967296LL + (long long )i3) + (long long )n2 >= 0LL) && (4294967296LL + (long long )i3) + (long long )n3 >= 0LL) && (1LL - (long long )e1) + (long long )e2 >= 0LL) && (1LL - (long long )e1) + (long long )e3 >= 0LL) && (1LL - (long long )e2) + (long long )e3 >= 0LL) && (2147483649LL - (long long )e1) + (long long )n1 >= 0LL) && (2147483649LL - (long long )e1) + (long long )n2 >= 0LL) && (2147483649LL - (long long )e1) + (long long )n3 >= 0LL) && (2147483649LL - (long long )e1) + (long long )i >= 0LL) && (2147483649LL - (long long )e1) + (long long )i1 >= 0LL) && (2147483649LL - (long long )e1) + (long long )i2 >= 0LL) && (2147483649LL - (long long )e1) + (long long )i3 >= 0LL) && (2147483649LL - (long long )e2) + (long long )n1 >= 0LL) && (2147483649LL - (long long )e2) + (long long )n2 >= 0LL) && (2147483649LL - (long long )e2) + (long long )n3 >= 0LL) && (2147483649LL - (long long )e2) + (long long )i >= 0LL) && (2147483649LL - (long long )e2) + (long long )i1 >= 0LL) && (2147483649LL - (long long )e2) + (long long )i2 >= 0LL) && (2147483649LL - (long long )e2) + (long long )i3 >= 0LL) && (2147483649LL - (long long )e3) + (long long )n1 >= 0LL) && (2147483649LL - (long long )e3) + (long long )n2 >= 0LL) && (2147483649LL - (long long )e3) + (long long )n3 >= 0LL) && (2147483649LL - (long long )e3) + (long long )i >= 0LL) && (2147483649LL - (long long )e3) + (long long )i1 >= 0LL) && (2147483649LL - (long long )e3) + (long long )i2 >= 0LL) && (2147483649LL - (long long )e3) + (long long )i3 >= 0LL) && (long long )e1 + (long long )e2 >= 0LL) && (long long )e1 + (long long )e3 >= 0LL) && (long long )e2 + (long long )e3 >= 0LL) && (1LL + (long long )e1) - (long long )e2 >= 0LL) && (1LL + (long long )e1) - (long long )e3 >= 0LL) && (1LL + (long long )e2) - (long long )e3 >= 0LL) && (2LL - (long long )e1) - (long long )e2 >= 0LL) && (2LL - (long long )e1) - (long long )e3 >= 0LL) && (2LL - (long long )e2) - (long long )e3 >= 0LL) [2024-06-14 14:16:42,457 INFO L97 edCorrectnessWitness]: Location invariant before [L191-L191] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((2147483648LL + (long long )e1) + (long long )n1 >= 0LL && (2147483648LL + (long long )e1) + (long long )n2 >= 0LL) && (2147483648LL + (long long )e1) + (long long )n3 >= 0LL) && (2147483648LL + (long long )e1) + (long long )i >= 0LL) && (2147483648LL + (long long )e1) + (long long )i1 >= 0LL) && (2147483648LL + (long long )e1) + (long long )i2 >= 0LL) && (2147483648LL + (long long )e1) + (long long )i3 >= 0LL) && (2147483648LL + (long long )e2) + (long long )n1 >= 0LL) && (2147483648LL + (long long )e2) + (long long )n2 >= 0LL) && (2147483648LL + (long long )e2) + (long long )n3 >= 0LL) && (2147483648LL + (long long )e2) + (long long )i >= 0LL) && (2147483648LL + (long long )e2) + (long long )i1 >= 0LL) && (2147483648LL + (long long )e2) + (long long )i2 >= 0LL) && (2147483648LL + (long long )e2) + (long long )i3 >= 0LL) && (2147483648LL + (long long )e3) + (long long )n1 >= 0LL) && (2147483648LL + (long long )e3) + (long long )n2 >= 0LL) && (2147483648LL + (long long )e3) + (long long )n3 >= 0LL) && (2147483648LL + (long long )e3) + (long long )i >= 0LL) && (2147483648LL + (long long )e3) + (long long )i1 >= 0LL) && (2147483648LL + (long long )e3) + (long long )i2 >= 0LL) && (2147483648LL + (long long )e3) + (long long )i3 >= 0LL) && (4294967296LL + (long long )n1) + (long long )n2 >= 0LL) && (4294967296LL + (long long )n1) + (long long )n3 >= 0LL) && (4294967296LL + (long long )n2) + (long long )n3 >= 0LL) && (4294967296LL + (long long )i) + (long long )n1 >= 0LL) && (4294967296LL + (long long )i) + (long long )n2 >= 0LL) && (4294967296LL + (long long )i) + (long long )n3 >= 0LL) && (4294967296LL + (long long )i) + (long long )i1 >= 0LL) && (4294967296LL + (long long )i) + (long long )i2 >= 0LL) && (4294967296LL + (long long )i) + (long long )i3 >= 0LL) && (4294967296LL + (long long )i1) + (long long )n1 >= 0LL) && (4294967296LL + (long long )i1) + (long long )n2 >= 0LL) && (4294967296LL + (long long )i1) + (long long )n3 >= 0LL) && (4294967296LL + (long long )i1) + (long long )i2 >= 0LL) && (4294967296LL + (long long )i1) + (long long )i3 >= 0LL) && (4294967296LL + (long long )i2) + (long long )n1 >= 0LL) && (4294967296LL + (long long )i2) + (long long )n2 >= 0LL) && (4294967296LL + (long long )i2) + (long long )n3 >= 0LL) && (4294967296LL + (long long )i2) + (long long )i3 >= 0LL) && (4294967296LL + (long long )i3) + (long long )n1 >= 0LL) && (4294967296LL + (long long )i3) + (long long )n2 >= 0LL) && (4294967296LL + (long long )i3) + (long long )n3 >= 0LL) && (1LL - (long long )e1) + (long long )e2 >= 0LL) && (1LL - (long long )e1) + (long long )e3 >= 0LL) && (1LL - (long long )e2) + (long long )e3 >= 0LL) && (2147483649LL - (long long )e1) + (long long )n1 >= 0LL) && (2147483649LL - (long long )e1) + (long long )n2 >= 0LL) && (2147483649LL - (long long )e1) + (long long )n3 >= 0LL) && (2147483649LL - (long long )e1) + (long long )i >= 0LL) && (2147483649LL - (long long )e1) + (long long )i1 >= 0LL) && (2147483649LL - (long long )e1) + (long long )i2 >= 0LL) && (2147483649LL - (long long )e1) + (long long )i3 >= 0LL) && (2147483649LL - (long long )e2) + (long long )n1 >= 0LL) && (2147483649LL - (long long )e2) + (long long )n2 >= 0LL) && (2147483649LL - (long long )e2) + (long long )n3 >= 0LL) && (2147483649LL - (long long )e2) + (long long )i >= 0LL) && (2147483649LL - (long long )e2) + (long long )i1 >= 0LL) && (2147483649LL - (long long )e2) + (long long )i2 >= 0LL) && (2147483649LL - (long long )e2) + (long long )i3 >= 0LL) && (2147483649LL - (long long )e3) + (long long )n1 >= 0LL) && (2147483649LL - (long long )e3) + (long long )n2 >= 0LL) && (2147483649LL - (long long )e3) + (long long )n3 >= 0LL) && (2147483649LL - (long long )e3) + (long long )i >= 0LL) && (2147483649LL - (long long )e3) + (long long )i1 >= 0LL) && (2147483649LL - (long long )e3) + (long long )i2 >= 0LL) && (2147483649LL - (long long )e3) + (long long )i3 >= 0LL) && (long long )e1 + (long long )e2 >= 0LL) && (long long )e1 + (long long )e3 >= 0LL) && (long long )e2 + (long long )e3 >= 0LL) && (1LL + (long long )e1) - (long long )e2 >= 0LL) && (1LL + (long long )e1) - (long long )e3 >= 0LL) && (1LL + (long long )e2) - (long long )e3 >= 0LL) && (2LL - (long long )e1) - (long long )e2 >= 0LL) && (2LL - (long long )e1) - (long long )e3 >= 0LL) && (2LL - (long long )e2) - (long long )e3 >= 0LL) [2024-06-14 14:16:42,457 INFO L97 edCorrectnessWitness]: Location invariant before [L189-L189] ! multithreaded || (((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((2147483648LL + (long long )e1) + (long long )n1 >= 0LL && (2147483648LL + (long long )e1) + (long long )n2 >= 0LL) && (2147483648LL + (long long )e1) + (long long )n3 >= 0LL) && (2147483648LL + (long long )e1) + (long long )i >= 0LL) && (2147483648LL + (long long )e1) + (long long )i1 >= 0LL) && (2147483648LL + (long long )e1) + (long long )i2 >= 0LL) && (2147483648LL + (long long )e1) + (long long )i3 >= 0LL) && (2147483648LL + (long long )e2) + (long long )n1 >= 0LL) && (2147483648LL + (long long )e2) + (long long )n2 >= 0LL) && (2147483648LL + (long long )e2) + (long long )n3 >= 0LL) && (2147483648LL + (long long )e2) + (long long )i >= 0LL) && (2147483648LL + (long long )e2) + (long long )i1 >= 0LL) && (2147483648LL + (long long )e2) + (long long )i2 >= 0LL) && (2147483648LL + (long long )e2) + (long long )i3 >= 0LL) && (2147483648LL + (long long )e3) + (long long )n1 >= 0LL) && (2147483648LL + (long long )e3) + (long long )n2 >= 0LL) && (2147483648LL + (long long )e3) + (long long )n3 >= 0LL) && (2147483648LL + (long long )e3) + (long long )i >= 0LL) && (2147483648LL + (long long )e3) + (long long )i1 >= 0LL) && (2147483648LL + (long long )e3) + (long long )i2 >= 0LL) && (2147483648LL + (long long )e3) + (long long )i3 >= 0LL) && (4294967296LL + (long long )n1) + (long long )n2 >= 0LL) && (4294967296LL + (long long )n1) + (long long )n3 >= 0LL) && (4294967296LL + (long long )n2) + (long long )n3 >= 0LL) && (4294967296LL + (long long )i) + (long long )n1 >= 0LL) && (4294967296LL + (long long )i) + (long long )n2 >= 0LL) && (4294967296LL + (long long )i) + (long long )n3 >= 0LL) && (4294967296LL + (long long )i) + (long long )i1 >= 0LL) && (4294967296LL + (long long )i) + (long long )i2 >= 0LL) && (4294967296LL + (long long )i) + (long long )i3 >= 0LL) && (4294967296LL + (long long )i1) + (long long )n1 >= 0LL) && (4294967296LL + (long long )i1) + (long long )n2 >= 0LL) && (4294967296LL + (long long )i1) + (long long )n3 >= 0LL) && (4294967296LL + (long long )i1) + (long long )i2 >= 0LL) && (4294967296LL + (long long )i1) + (long long )i3 >= 0LL) && (4294967296LL + (long long )i2) + (long long )n1 >= 0LL) && (4294967296LL + (long long )i2) + (long long )n2 >= 0LL) && (4294967296LL + (long long )i2) + (long long )n3 >= 0LL) && (4294967296LL + (long long )i2) + (long long )i3 >= 0LL) && (4294967296LL + (long long )i3) + (long long )n1 >= 0LL) && (4294967296LL + (long long )i3) + (long long )n2 >= 0LL) && (4294967296LL + (long long )i3) + (long long )n3 >= 0LL) && (1LL - (long long )e1) + (long long )e2 >= 0LL) && (1LL - (long long )e1) + (long long )e3 >= 0LL) && (1LL - (long long )e2) + (long long )e3 >= 0LL) && (2147483649LL - (long long )e1) + (long long )n1 >= 0LL) && (2147483649LL - (long long )e1) + (long long )n2 >= 0LL) && (2147483649LL - (long long )e1) + (long long )n3 >= 0LL) && (2147483649LL - (long long )e1) + (long long )i >= 0LL) && (2147483649LL - (long long )e1) + (long long )i1 >= 0LL) && (2147483649LL - (long long )e1) + (long long )i2 >= 0LL) && (2147483649LL - (long long )e1) + (long long )i3 >= 0LL) && (2147483649LL - (long long )e2) + (long long )n1 >= 0LL) && (2147483649LL - (long long )e2) + (long long )n2 >= 0LL) && (2147483649LL - (long long )e2) + (long long )n3 >= 0LL) && (2147483649LL - (long long )e2) + (long long )i >= 0LL) && (2147483649LL - (long long )e2) + (long long )i1 >= 0LL) && (2147483649LL - (long long )e2) + (long long )i2 >= 0LL) && (2147483649LL - (long long )e2) + (long long )i3 >= 0LL) && (2147483649LL - (long long )e3) + (long long )n1 >= 0LL) && (2147483649LL - (long long )e3) + (long long )n2 >= 0LL) && (2147483649LL - (long long )e3) + (long long )n3 >= 0LL) && (2147483649LL - (long long )e3) + (long long )i >= 0LL) && (2147483649LL - (long long )e3) + (long long )i1 >= 0LL) && (2147483649LL - (long long )e3) + (long long )i2 >= 0LL) && (2147483649LL - (long long )e3) + (long long )i3 >= 0LL) && (long long )e1 + (long long )e2 >= 0LL) && (long long )e1 + (long long )e3 >= 0LL) && (long long )e2 + (long long )e3 >= 0LL) && (1LL + (long long )e1) - (long long )e2 >= 0LL) && (1LL + (long long )e1) - (long long )e3 >= 0LL) && (1LL + (long long )e2) - (long long )e3 >= 0LL) && (2LL - (long long )e1) - (long long )e2 >= 0LL) && (2LL - (long long )e1) - (long long )e3 >= 0LL) && (2LL - (long long )e2) - (long long )e3 >= 0LL) [2024-06-14 14:16:42,458 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-14 14:16:42,458 INFO L106 edCorrectnessWitness]: ghost_update [L188-L188] multithreaded = 1; [2024-06-14 14:16:42,484 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-14 14:16:42,664 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 14:16:42,674 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-14 14:16:42,853 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 14:16:42,869 INFO L206 MainTranslator]: Completed translation [2024-06-14 14:16:42,869 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 02:16:42 WrapperNode [2024-06-14 14:16:42,869 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-14 14:16:42,870 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-14 14:16:42,870 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-14 14:16:42,870 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-14 14:16:42,877 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 02:16:42" (1/1) ... [2024-06-14 14:16:42,901 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 02:16:42" (1/1) ... [2024-06-14 14:16:42,967 INFO L138 Inliner]: procedures = 21, calls = 96, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 260 [2024-06-14 14:16:42,969 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-14 14:16:42,970 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-14 14:16:42,970 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-14 14:16:42,971 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-14 14:16:42,981 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 02:16:42" (1/1) ... [2024-06-14 14:16:42,981 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 02:16:42" (1/1) ... [2024-06-14 14:16:42,987 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 02:16:42" (1/1) ... [2024-06-14 14:16:43,022 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-14 14:16:43,024 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 02:16:42" (1/1) ... [2024-06-14 14:16:43,025 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 02:16:42" (1/1) ... [2024-06-14 14:16:43,043 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 02:16:42" (1/1) ... [2024-06-14 14:16:43,047 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 02:16:42" (1/1) ... [2024-06-14 14:16:43,059 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 02:16:42" (1/1) ... [2024-06-14 14:16:43,062 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 02:16:42" (1/1) ... [2024-06-14 14:16:43,066 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-14 14:16:43,075 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-14 14:16:43,076 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-14 14:16:43,076 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-14 14:16:43,079 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 02:16:42" (1/1) ... [2024-06-14 14:16:43,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 14:16:43,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 14:16:43,115 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-14 14:16:43,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-14 14:16:43,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-14 14:16:43,154 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-14 14:16:43,154 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-14 14:16:43,154 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-14 14:16:43,155 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-14 14:16:43,155 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-06-14 14:16:43,155 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-06-14 14:16:43,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-14 14:16:43,155 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-14 14:16:43,155 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-14 14:16:43,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-14 14:16:43,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-14 14:16:43,157 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-14 14:16:43,266 INFO L244 CfgBuilder]: Building ICFG [2024-06-14 14:16:43,268 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-14 14:16:43,911 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-14 14:16:43,914 INFO L293 CfgBuilder]: Performing block encoding [2024-06-14 14:16:44,152 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-14 14:16:44,152 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-14 14:16:44,153 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 02:16:44 BoogieIcfgContainer [2024-06-14 14:16:44,153 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-14 14:16:44,155 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-14 14:16:44,156 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-14 14:16:44,158 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-14 14:16:44,158 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.06 02:16:42" (1/4) ... [2024-06-14 14:16:44,160 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@456d87eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 02:16:44, skipping insertion in model container [2024-06-14 14:16:44,160 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 02:16:42" (2/4) ... [2024-06-14 14:16:44,160 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@456d87eb and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 02:16:44, skipping insertion in model container [2024-06-14 14:16:44,160 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 02:16:42" (3/4) ... [2024-06-14 14:16:44,163 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@456d87eb and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 02:16:44, skipping insertion in model container [2024-06-14 14:16:44,163 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 02:16:44" (4/4) ... [2024-06-14 14:16:44,166 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bakery-3.wvr.c [2024-06-14 14:16:44,182 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-14 14:16:44,182 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-14 14:16:44,182 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-14 14:16:44,252 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-06-14 14:16:44,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 64 transitions, 149 flow [2024-06-14 14:16:44,334 INFO L124 PetriNetUnfolderBase]: 0/61 cut-off events. [2024-06-14 14:16:44,334 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-06-14 14:16:44,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 61 events. 0/61 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 110 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-06-14 14:16:44,336 INFO L82 GeneralOperation]: Start removeDead. Operand has 74 places, 64 transitions, 149 flow [2024-06-14 14:16:44,341 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 56 transitions, 121 flow [2024-06-14 14:16:44,355 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-14 14:16:44,362 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;@1f3cfbcb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-14 14:16:44,363 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-14 14:16:44,368 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-14 14:16:44,368 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-06-14 14:16:44,368 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 14:16:44,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:16:44,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-14 14:16:44,369 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 14:16:44,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:16:44,374 INFO L85 PathProgramCache]: Analyzing trace with hash -689570445, now seen corresponding path program 1 times [2024-06-14 14:16:44,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:16:44,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166093125] [2024-06-14 14:16:44,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:16:44,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:16:44,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:16:45,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:16:45,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:16:45,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166093125] [2024-06-14 14:16:45,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166093125] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:16:45,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:16:45,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-14 14:16:45,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949788535] [2024-06-14 14:16:45,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:16:45,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-14 14:16:45,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:16:45,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-14 14:16:45,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-14 14:16:46,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 64 [2024-06-14 14:16:46,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 56 transitions, 121 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:16:46,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:16:46,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 64 [2024-06-14 14:16:46,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:16:47,576 INFO L124 PetriNetUnfolderBase]: 7030/11454 cut-off events. [2024-06-14 14:16:47,577 INFO L125 PetriNetUnfolderBase]: For 106/106 co-relation queries the response was YES. [2024-06-14 14:16:47,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21812 conditions, 11454 events. 7030/11454 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 77616 event pairs, 5464 based on Foata normal form. 1/11143 useless extension candidates. Maximal degree in co-relation 21797. Up to 10125 conditions per place. [2024-06-14 14:16:47,710 INFO L140 encePairwiseOnDemand]: 57/64 looper letters, 46 selfloop transitions, 4 changer transitions 0/66 dead transitions. [2024-06-14 14:16:47,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 66 transitions, 247 flow [2024-06-14 14:16:47,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-14 14:16:47,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-14 14:16:47,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2024-06-14 14:16:47,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5885416666666666 [2024-06-14 14:16:47,724 INFO L175 Difference]: Start difference. First operand has 66 places, 56 transitions, 121 flow. Second operand 3 states and 113 transitions. [2024-06-14 14:16:47,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 66 transitions, 247 flow [2024-06-14 14:16:47,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 66 transitions, 242 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-14 14:16:47,733 INFO L231 Difference]: Finished difference. Result has 66 places, 59 transitions, 148 flow [2024-06-14 14:16:47,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=66, PETRI_TRANSITIONS=59} [2024-06-14 14:16:47,739 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 0 predicate places. [2024-06-14 14:16:47,739 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 59 transitions, 148 flow [2024-06-14 14:16:47,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:16:47,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:16:47,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:16:47,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-14 14:16:47,740 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 14:16:47,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:16:47,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1252175886, now seen corresponding path program 1 times [2024-06-14 14:16:47,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:16:47,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817486222] [2024-06-14 14:16:47,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:16:47,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:16:47,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:16:48,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:16:48,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:16:48,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817486222] [2024-06-14 14:16:48,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817486222] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:16:48,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:16:48,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-14 14:16:48,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306836307] [2024-06-14 14:16:48,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:16:48,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-14 14:16:48,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:16:48,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-14 14:16:48,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-14 14:16:48,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 64 [2024-06-14 14:16:48,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 59 transitions, 148 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:16:48,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:16:48,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 64 [2024-06-14 14:16:48,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:16:50,420 INFO L124 PetriNetUnfolderBase]: 7838/12721 cut-off events. [2024-06-14 14:16:50,421 INFO L125 PetriNetUnfolderBase]: For 1901/1901 co-relation queries the response was YES. [2024-06-14 14:16:50,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26339 conditions, 12721 events. 7838/12721 cut-off events. For 1901/1901 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 85998 event pairs, 5420 based on Foata normal form. 6/12569 useless extension candidates. Maximal degree in co-relation 26324. Up to 11140 conditions per place. [2024-06-14 14:16:50,498 INFO L140 encePairwiseOnDemand]: 55/64 looper letters, 62 selfloop transitions, 10 changer transitions 0/87 dead transitions. [2024-06-14 14:16:50,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 87 transitions, 370 flow [2024-06-14 14:16:50,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 14:16:50,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 14:16:50,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 149 transitions. [2024-06-14 14:16:50,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.58203125 [2024-06-14 14:16:50,506 INFO L175 Difference]: Start difference. First operand has 66 places, 59 transitions, 148 flow. Second operand 4 states and 149 transitions. [2024-06-14 14:16:50,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 87 transitions, 370 flow [2024-06-14 14:16:50,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 87 transitions, 366 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-14 14:16:50,510 INFO L231 Difference]: Finished difference. Result has 70 places, 65 transitions, 210 flow [2024-06-14 14:16:50,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=210, PETRI_PLACES=70, PETRI_TRANSITIONS=65} [2024-06-14 14:16:50,511 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 4 predicate places. [2024-06-14 14:16:50,511 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 65 transitions, 210 flow [2024-06-14 14:16:50,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:16:50,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:16:50,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:16:50,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-14 14:16:50,515 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 14:16:50,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:16:50,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1384439496, now seen corresponding path program 1 times [2024-06-14 14:16:50,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:16:50,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726082855] [2024-06-14 14:16:50,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:16:50,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:16:50,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:16:51,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:16:51,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:16:51,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726082855] [2024-06-14 14:16:51,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726082855] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:16:51,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:16:51,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-14 14:16:51,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663609751] [2024-06-14 14:16:51,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:16:51,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-14 14:16:51,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:16:51,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-14 14:16:51,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-06-14 14:16:52,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 64 [2024-06-14 14:16:52,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 65 transitions, 210 flow. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:16:52,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:16:52,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 64 [2024-06-14 14:16:52,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:16:53,718 INFO L124 PetriNetUnfolderBase]: 8475/13691 cut-off events. [2024-06-14 14:16:53,719 INFO L125 PetriNetUnfolderBase]: For 6149/6149 co-relation queries the response was YES. [2024-06-14 14:16:53,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30805 conditions, 13691 events. 8475/13691 cut-off events. For 6149/6149 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 93582 event pairs, 6110 based on Foata normal form. 2/13413 useless extension candidates. Maximal degree in co-relation 30787. Up to 12117 conditions per place. [2024-06-14 14:16:53,841 INFO L140 encePairwiseOnDemand]: 56/64 looper letters, 55 selfloop transitions, 8 changer transitions 0/79 dead transitions. [2024-06-14 14:16:53,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 79 transitions, 376 flow [2024-06-14 14:16:53,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 14:16:53,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 14:16:53,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 136 transitions. [2024-06-14 14:16:53,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-06-14 14:16:53,846 INFO L175 Difference]: Start difference. First operand has 70 places, 65 transitions, 210 flow. Second operand 4 states and 136 transitions. [2024-06-14 14:16:53,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 79 transitions, 376 flow [2024-06-14 14:16:53,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 79 transitions, 372 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-14 14:16:53,854 INFO L231 Difference]: Finished difference. Result has 74 places, 68 transitions, 250 flow [2024-06-14 14:16:53,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=250, PETRI_PLACES=74, PETRI_TRANSITIONS=68} [2024-06-14 14:16:53,855 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 8 predicate places. [2024-06-14 14:16:53,856 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 68 transitions, 250 flow [2024-06-14 14:16:53,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 5 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:16:53,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:16:53,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:16:53,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-14 14:16:53,857 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 14:16:53,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:16:53,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1375374164, now seen corresponding path program 1 times [2024-06-14 14:16:53,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:16:53,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845461337] [2024-06-14 14:16:53,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:16:53,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:16:53,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:16:55,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:16:55,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:16:55,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845461337] [2024-06-14 14:16:55,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845461337] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:16:55,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:16:55,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-14 14:16:55,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192457198] [2024-06-14 14:16:55,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:16:55,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-14 14:16:55,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:16:55,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-14 14:16:55,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-14 14:16:55,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 64 [2024-06-14 14:16:55,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 68 transitions, 250 flow. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:16:55,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:16:55,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 64 [2024-06-14 14:16:55,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:16:56,918 INFO L124 PetriNetUnfolderBase]: 8624/13732 cut-off events. [2024-06-14 14:16:56,919 INFO L125 PetriNetUnfolderBase]: For 11317/11317 co-relation queries the response was YES. [2024-06-14 14:16:56,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33444 conditions, 13732 events. 8624/13732 cut-off events. For 11317/11317 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 91204 event pairs, 4270 based on Foata normal form. 15/13517 useless extension candidates. Maximal degree in co-relation 33421. Up to 12270 conditions per place. [2024-06-14 14:16:57,022 INFO L140 encePairwiseOnDemand]: 55/64 looper letters, 70 selfloop transitions, 12 changer transitions 0/96 dead transitions. [2024-06-14 14:16:57,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 96 transitions, 488 flow [2024-06-14 14:16:57,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 14:16:57,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 14:16:57,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 170 transitions. [2024-06-14 14:16:57,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53125 [2024-06-14 14:16:57,024 INFO L175 Difference]: Start difference. First operand has 74 places, 68 transitions, 250 flow. Second operand 5 states and 170 transitions. [2024-06-14 14:16:57,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 96 transitions, 488 flow [2024-06-14 14:16:57,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 96 transitions, 478 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-14 14:16:57,032 INFO L231 Difference]: Finished difference. Result has 78 places, 71 transitions, 294 flow [2024-06-14 14:16:57,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=294, PETRI_PLACES=78, PETRI_TRANSITIONS=71} [2024-06-14 14:16:57,033 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 12 predicate places. [2024-06-14 14:16:57,034 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 71 transitions, 294 flow [2024-06-14 14:16:57,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:16:57,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:16:57,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:16:57,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-14 14:16:57,035 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 14:16:57,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:16:57,036 INFO L85 PathProgramCache]: Analyzing trace with hash -32047381, now seen corresponding path program 1 times [2024-06-14 14:16:57,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:16:57,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640259720] [2024-06-14 14:16:57,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:16:57,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:16:57,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:16:58,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:16:58,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:16:58,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640259720] [2024-06-14 14:16:58,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640259720] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:16:58,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:16:58,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 14:16:58,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032302082] [2024-06-14 14:16:58,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:16:58,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 14:16:58,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:16:58,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 14:16:58,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-14 14:16:58,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 64 [2024-06-14 14:16:58,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 71 transitions, 294 flow. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:16:58,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:16:58,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 64 [2024-06-14 14:16:58,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:17:00,893 INFO L124 PetriNetUnfolderBase]: 9970/16046 cut-off events. [2024-06-14 14:17:00,894 INFO L125 PetriNetUnfolderBase]: For 18807/18807 co-relation queries the response was YES. [2024-06-14 14:17:00,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40535 conditions, 16046 events. 9970/16046 cut-off events. For 18807/18807 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 108335 event pairs, 6803 based on Foata normal form. 2/15854 useless extension candidates. Maximal degree in co-relation 40510. Up to 14401 conditions per place. [2024-06-14 14:17:00,997 INFO L140 encePairwiseOnDemand]: 57/64 looper letters, 62 selfloop transitions, 9 changer transitions 0/85 dead transitions. [2024-06-14 14:17:00,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 85 transitions, 480 flow [2024-06-14 14:17:00,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 14:17:00,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 14:17:00,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 131 transitions. [2024-06-14 14:17:00,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.51171875 [2024-06-14 14:17:00,999 INFO L175 Difference]: Start difference. First operand has 78 places, 71 transitions, 294 flow. Second operand 4 states and 131 transitions. [2024-06-14 14:17:01,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 85 transitions, 480 flow [2024-06-14 14:17:01,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 85 transitions, 458 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-14 14:17:01,011 INFO L231 Difference]: Finished difference. Result has 80 places, 74 transitions, 322 flow [2024-06-14 14:17:01,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=322, PETRI_PLACES=80, PETRI_TRANSITIONS=74} [2024-06-14 14:17:01,014 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 14 predicate places. [2024-06-14 14:17:01,014 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 74 transitions, 322 flow [2024-06-14 14:17:01,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:17:01,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:17:01,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:17:01,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-14 14:17:01,016 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 14:17:01,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:17:01,016 INFO L85 PathProgramCache]: Analyzing trace with hash -434453939, now seen corresponding path program 1 times [2024-06-14 14:17:01,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:17:01,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709645953] [2024-06-14 14:17:01,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:17:01,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:17:01,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:17:02,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:17:02,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:17:02,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709645953] [2024-06-14 14:17:02,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709645953] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:17:02,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:17:02,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 14:17:02,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581845878] [2024-06-14 14:17:02,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:17:02,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 14:17:02,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:17:02,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 14:17:02,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-14 14:17:02,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 64 [2024-06-14 14:17:02,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 74 transitions, 322 flow. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:17:02,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:17:02,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 64 [2024-06-14 14:17:02,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:17:03,545 INFO L124 PetriNetUnfolderBase]: 8559/13632 cut-off events. [2024-06-14 14:17:03,545 INFO L125 PetriNetUnfolderBase]: For 23916/23919 co-relation queries the response was YES. [2024-06-14 14:17:03,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37085 conditions, 13632 events. 8559/13632 cut-off events. For 23916/23919 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 91254 event pairs, 3898 based on Foata normal form. 6/13496 useless extension candidates. Maximal degree in co-relation 37059. Up to 12038 conditions per place. [2024-06-14 14:17:03,633 INFO L140 encePairwiseOnDemand]: 55/64 looper letters, 75 selfloop transitions, 22 changer transitions 0/111 dead transitions. [2024-06-14 14:17:03,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 111 transitions, 680 flow [2024-06-14 14:17:03,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 14:17:03,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 14:17:03,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 174 transitions. [2024-06-14 14:17:03,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.54375 [2024-06-14 14:17:03,635 INFO L175 Difference]: Start difference. First operand has 80 places, 74 transitions, 322 flow. Second operand 5 states and 174 transitions. [2024-06-14 14:17:03,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 111 transitions, 680 flow [2024-06-14 14:17:03,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 111 transitions, 656 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-14 14:17:03,645 INFO L231 Difference]: Finished difference. Result has 84 places, 83 transitions, 427 flow [2024-06-14 14:17:03,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=427, PETRI_PLACES=84, PETRI_TRANSITIONS=83} [2024-06-14 14:17:03,648 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 18 predicate places. [2024-06-14 14:17:03,648 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 83 transitions, 427 flow [2024-06-14 14:17:03,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:17:03,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:17:03,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:17:03,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-14 14:17:03,649 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 14:17:03,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:17:03,650 INFO L85 PathProgramCache]: Analyzing trace with hash -420429539, now seen corresponding path program 2 times [2024-06-14 14:17:03,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:17:03,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255646222] [2024-06-14 14:17:03,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:17:03,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:17:03,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:17:04,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:17:04,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:17:04,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255646222] [2024-06-14 14:17:04,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255646222] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:17:04,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:17:04,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 14:17:04,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341430064] [2024-06-14 14:17:04,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:17:04,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 14:17:04,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:17:04,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 14:17:04,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-14 14:17:04,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 64 [2024-06-14 14:17:04,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 83 transitions, 427 flow. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:17:04,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:17:04,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 64 [2024-06-14 14:17:04,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:17:06,159 INFO L124 PetriNetUnfolderBase]: 8549/13594 cut-off events. [2024-06-14 14:17:06,159 INFO L125 PetriNetUnfolderBase]: For 34045/34045 co-relation queries the response was YES. [2024-06-14 14:17:06,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39680 conditions, 13594 events. 8549/13594 cut-off events. For 34045/34045 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 90763 event pairs, 3880 based on Foata normal form. 4/13456 useless extension candidates. Maximal degree in co-relation 39652. Up to 12032 conditions per place. [2024-06-14 14:17:06,255 INFO L140 encePairwiseOnDemand]: 54/64 looper letters, 74 selfloop transitions, 22 changer transitions 0/110 dead transitions. [2024-06-14 14:17:06,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 110 transitions, 709 flow [2024-06-14 14:17:06,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 14:17:06,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 14:17:06,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 175 transitions. [2024-06-14 14:17:06,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.546875 [2024-06-14 14:17:06,258 INFO L175 Difference]: Start difference. First operand has 84 places, 83 transitions, 427 flow. Second operand 5 states and 175 transitions. [2024-06-14 14:17:06,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 110 transitions, 709 flow [2024-06-14 14:17:06,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 110 transitions, 687 flow, removed 11 selfloop flow, removed 0 redundant places. [2024-06-14 14:17:06,278 INFO L231 Difference]: Finished difference. Result has 89 places, 83 transitions, 457 flow [2024-06-14 14:17:06,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=457, PETRI_PLACES=89, PETRI_TRANSITIONS=83} [2024-06-14 14:17:06,279 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 23 predicate places. [2024-06-14 14:17:06,279 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 83 transitions, 457 flow [2024-06-14 14:17:06,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:17:06,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:17:06,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:17:06,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-14 14:17:06,280 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 14:17:06,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:17:06,281 INFO L85 PathProgramCache]: Analyzing trace with hash -993467577, now seen corresponding path program 1 times [2024-06-14 14:17:06,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:17:06,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263445600] [2024-06-14 14:17:06,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:17:06,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:17:06,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:17:07,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:17:07,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:17:07,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263445600] [2024-06-14 14:17:07,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263445600] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:17:07,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:17:07,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 14:17:07,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701734250] [2024-06-14 14:17:07,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:17:07,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 14:17:07,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:17:07,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 14:17:07,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-06-14 14:17:08,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 64 [2024-06-14 14:17:08,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 83 transitions, 457 flow. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:17:08,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:17:08,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 64 [2024-06-14 14:17:08,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:17:09,829 INFO L124 PetriNetUnfolderBase]: 11019/16961 cut-off events. [2024-06-14 14:17:09,830 INFO L125 PetriNetUnfolderBase]: For 53368/53368 co-relation queries the response was YES. [2024-06-14 14:17:09,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50657 conditions, 16961 events. 11019/16961 cut-off events. For 53368/53368 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 109246 event pairs, 7376 based on Foata normal form. 2/16816 useless extension candidates. Maximal degree in co-relation 50625. Up to 15830 conditions per place. [2024-06-14 14:17:09,935 INFO L140 encePairwiseOnDemand]: 57/64 looper letters, 71 selfloop transitions, 11 changer transitions 0/97 dead transitions. [2024-06-14 14:17:09,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 97 transitions, 671 flow [2024-06-14 14:17:09,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 14:17:09,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 14:17:09,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 129 transitions. [2024-06-14 14:17:09,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.50390625 [2024-06-14 14:17:09,938 INFO L175 Difference]: Start difference. First operand has 89 places, 83 transitions, 457 flow. Second operand 4 states and 129 transitions. [2024-06-14 14:17:09,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 97 transitions, 671 flow [2024-06-14 14:17:09,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 97 transitions, 632 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-14 14:17:09,967 INFO L231 Difference]: Finished difference. Result has 90 places, 86 transitions, 480 flow [2024-06-14 14:17:09,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=480, PETRI_PLACES=90, PETRI_TRANSITIONS=86} [2024-06-14 14:17:09,969 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 24 predicate places. [2024-06-14 14:17:09,969 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 86 transitions, 480 flow [2024-06-14 14:17:09,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:17:09,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:17:09,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:17:09,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-14 14:17:09,970 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 14:17:09,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:17:09,971 INFO L85 PathProgramCache]: Analyzing trace with hash -276077332, now seen corresponding path program 1 times [2024-06-14 14:17:09,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:17:09,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476680040] [2024-06-14 14:17:09,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:17:09,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:17:09,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:17:11,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:17:11,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:17:11,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476680040] [2024-06-14 14:17:11,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476680040] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:17:11,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:17:11,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 14:17:11,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975862915] [2024-06-14 14:17:11,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:17:11,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 14:17:11,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:17:11,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 14:17:11,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-06-14 14:17:11,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 64 [2024-06-14 14:17:11,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 86 transitions, 480 flow. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:17:11,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:17:11,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 64 [2024-06-14 14:17:11,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:17:12,657 INFO L124 PetriNetUnfolderBase]: 10393/16517 cut-off events. [2024-06-14 14:17:12,658 INFO L125 PetriNetUnfolderBase]: For 63936/63939 co-relation queries the response was YES. [2024-06-14 14:17:12,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51073 conditions, 16517 events. 10393/16517 cut-off events. For 63936/63939 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 109401 event pairs, 6311 based on Foata normal form. 6/16339 useless extension candidates. Maximal degree in co-relation 51040. Up to 14787 conditions per place. [2024-06-14 14:17:12,750 INFO L140 encePairwiseOnDemand]: 53/64 looper letters, 92 selfloop transitions, 25 changer transitions 0/129 dead transitions. [2024-06-14 14:17:12,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 129 transitions, 932 flow [2024-06-14 14:17:12,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 14:17:12,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 14:17:12,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 187 transitions. [2024-06-14 14:17:12,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4869791666666667 [2024-06-14 14:17:12,751 INFO L175 Difference]: Start difference. First operand has 90 places, 86 transitions, 480 flow. Second operand 6 states and 187 transitions. [2024-06-14 14:17:12,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 129 transitions, 932 flow [2024-06-14 14:17:12,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 129 transitions, 912 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-14 14:17:12,778 INFO L231 Difference]: Finished difference. Result has 96 places, 102 transitions, 672 flow [2024-06-14 14:17:12,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=672, PETRI_PLACES=96, PETRI_TRANSITIONS=102} [2024-06-14 14:17:12,779 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 30 predicate places. [2024-06-14 14:17:12,779 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 102 transitions, 672 flow [2024-06-14 14:17:12,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:17:12,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:17:12,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:17:12,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-14 14:17:12,780 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 14:17:12,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:17:12,780 INFO L85 PathProgramCache]: Analyzing trace with hash 308839658, now seen corresponding path program 2 times [2024-06-14 14:17:12,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:17:12,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429940074] [2024-06-14 14:17:12,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:17:12,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:17:12,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:17:13,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:17:13,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:17:13,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429940074] [2024-06-14 14:17:13,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429940074] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:17:13,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:17:13,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 14:17:13,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229048728] [2024-06-14 14:17:13,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:17:13,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 14:17:13,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:17:13,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 14:17:13,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-14 14:17:13,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 64 [2024-06-14 14:17:13,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 102 transitions, 672 flow. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:17:13,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:17:13,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 64 [2024-06-14 14:17:13,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:17:15,499 INFO L124 PetriNetUnfolderBase]: 10570/16773 cut-off events. [2024-06-14 14:17:15,499 INFO L125 PetriNetUnfolderBase]: For 96510/96510 co-relation queries the response was YES. [2024-06-14 14:17:15,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56708 conditions, 16773 events. 10570/16773 cut-off events. For 96510/96510 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 110722 event pairs, 6326 based on Foata normal form. 6/16593 useless extension candidates. Maximal degree in co-relation 56670. Up to 14872 conditions per place. [2024-06-14 14:17:15,598 INFO L140 encePairwiseOnDemand]: 52/64 looper letters, 97 selfloop transitions, 36 changer transitions 0/145 dead transitions. [2024-06-14 14:17:15,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 145 transitions, 1160 flow [2024-06-14 14:17:15,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 14:17:15,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 14:17:15,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 213 transitions. [2024-06-14 14:17:15,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47544642857142855 [2024-06-14 14:17:15,600 INFO L175 Difference]: Start difference. First operand has 96 places, 102 transitions, 672 flow. Second operand 7 states and 213 transitions. [2024-06-14 14:17:15,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 145 transitions, 1160 flow [2024-06-14 14:17:15,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 145 transitions, 1122 flow, removed 15 selfloop flow, removed 1 redundant places. [2024-06-14 14:17:15,644 INFO L231 Difference]: Finished difference. Result has 104 places, 113 transitions, 852 flow [2024-06-14 14:17:15,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=634, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=852, PETRI_PLACES=104, PETRI_TRANSITIONS=113} [2024-06-14 14:17:15,645 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 38 predicate places. [2024-06-14 14:17:15,645 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 113 transitions, 852 flow [2024-06-14 14:17:15,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:17:15,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:17:15,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:17:15,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-14 14:17:15,646 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 14:17:15,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:17:15,646 INFO L85 PathProgramCache]: Analyzing trace with hash -732722550, now seen corresponding path program 1 times [2024-06-14 14:17:15,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:17:15,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588678752] [2024-06-14 14:17:15,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:17:15,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:17:15,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:17:17,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:17:17,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:17:17,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588678752] [2024-06-14 14:17:17,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588678752] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:17:17,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:17:17,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 14:17:17,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813651755] [2024-06-14 14:17:17,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:17:17,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 14:17:17,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:17:17,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 14:17:17,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 14:17:17,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 64 [2024-06-14 14:17:17,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 113 transitions, 852 flow. Second operand has 8 states, 8 states have (on average 16.625) internal successors, (133), 8 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:17:17,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:17:17,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 64 [2024-06-14 14:17:17,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:17:19,333 INFO L124 PetriNetUnfolderBase]: 12910/19740 cut-off events. [2024-06-14 14:17:19,333 INFO L125 PetriNetUnfolderBase]: For 168563/168563 co-relation queries the response was YES. [2024-06-14 14:17:19,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73145 conditions, 19740 events. 12910/19740 cut-off events. For 168563/168563 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 123762 event pairs, 8443 based on Foata normal form. 2/19592 useless extension candidates. Maximal degree in co-relation 73102. Up to 18632 conditions per place. [2024-06-14 14:17:19,478 INFO L140 encePairwiseOnDemand]: 55/64 looper letters, 96 selfloop transitions, 15 changer transitions 0/131 dead transitions. [2024-06-14 14:17:19,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 131 transitions, 1142 flow [2024-06-14 14:17:19,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 14:17:19,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 14:17:19,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 163 transitions. [2024-06-14 14:17:19,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4244791666666667 [2024-06-14 14:17:19,480 INFO L175 Difference]: Start difference. First operand has 104 places, 113 transitions, 852 flow. Second operand 6 states and 163 transitions. [2024-06-14 14:17:19,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 131 transitions, 1142 flow [2024-06-14 14:17:19,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 131 transitions, 1099 flow, removed 15 selfloop flow, removed 1 redundant places. [2024-06-14 14:17:19,568 INFO L231 Difference]: Finished difference. Result has 109 places, 116 transitions, 883 flow [2024-06-14 14:17:19,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=809, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=883, PETRI_PLACES=109, PETRI_TRANSITIONS=116} [2024-06-14 14:17:19,569 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 43 predicate places. [2024-06-14 14:17:19,569 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 116 transitions, 883 flow [2024-06-14 14:17:19,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.625) internal successors, (133), 8 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:17:19,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:17:19,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:17:19,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-14 14:17:19,570 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 14:17:19,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:17:19,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1220038627, now seen corresponding path program 1 times [2024-06-14 14:17:19,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:17:19,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302854597] [2024-06-14 14:17:19,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:17:19,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:17:19,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:17:20,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:17:20,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:17:20,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302854597] [2024-06-14 14:17:20,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302854597] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:17:20,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:17:20,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-14 14:17:20,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638483971] [2024-06-14 14:17:20,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:17:20,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-14 14:17:20,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:17:20,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-14 14:17:20,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-06-14 14:17:20,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 64 [2024-06-14 14:17:20,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 116 transitions, 883 flow. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:17:20,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:17:20,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 64 [2024-06-14 14:17:20,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:17:22,297 INFO L124 PetriNetUnfolderBase]: 9438/15442 cut-off events. [2024-06-14 14:17:22,297 INFO L125 PetriNetUnfolderBase]: For 150984/150984 co-relation queries the response was YES. [2024-06-14 14:17:22,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59255 conditions, 15442 events. 9438/15442 cut-off events. For 150984/150984 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 105872 event pairs, 5682 based on Foata normal form. 2/15279 useless extension candidates. Maximal degree in co-relation 59209. Up to 13681 conditions per place. [2024-06-14 14:17:22,395 INFO L140 encePairwiseOnDemand]: 56/64 looper letters, 100 selfloop transitions, 11 changer transitions 0/136 dead transitions. [2024-06-14 14:17:22,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 136 transitions, 1203 flow [2024-06-14 14:17:22,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 14:17:22,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 14:17:22,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 139 transitions. [2024-06-14 14:17:22,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.54296875 [2024-06-14 14:17:22,397 INFO L175 Difference]: Start difference. First operand has 109 places, 116 transitions, 883 flow. Second operand 4 states and 139 transitions. [2024-06-14 14:17:22,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 136 transitions, 1203 flow [2024-06-14 14:17:22,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 136 transitions, 1153 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-14 14:17:22,484 INFO L231 Difference]: Finished difference. Result has 110 places, 122 transitions, 919 flow [2024-06-14 14:17:22,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=833, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=919, PETRI_PLACES=110, PETRI_TRANSITIONS=122} [2024-06-14 14:17:22,485 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 44 predicate places. [2024-06-14 14:17:22,485 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 122 transitions, 919 flow [2024-06-14 14:17:22,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:17:22,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:17:22,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:17:22,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-14 14:17:22,486 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 14:17:22,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:17:22,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1182427642, now seen corresponding path program 1 times [2024-06-14 14:17:22,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:17:22,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356231103] [2024-06-14 14:17:22,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:17:22,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:17:22,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:17:23,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:17:23,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:17:23,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356231103] [2024-06-14 14:17:23,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356231103] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:17:23,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:17:23,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 14:17:23,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890794353] [2024-06-14 14:17:23,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:17:23,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 14:17:23,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:17:23,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 14:17:23,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-14 14:17:23,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 64 [2024-06-14 14:17:23,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 122 transitions, 919 flow. Second operand has 8 states, 8 states have (on average 16.625) internal successors, (133), 8 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:17:23,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:17:23,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 64 [2024-06-14 14:17:23,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:17:25,844 INFO L124 PetriNetUnfolderBase]: 12639/19476 cut-off events. [2024-06-14 14:17:25,844 INFO L125 PetriNetUnfolderBase]: For 219334/219357 co-relation queries the response was YES. [2024-06-14 14:17:25,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79755 conditions, 19476 events. 12639/19476 cut-off events. For 219334/219357 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 123929 event pairs, 7660 based on Foata normal form. 10/19263 useless extension candidates. Maximal degree in co-relation 79706. Up to 17909 conditions per place. [2024-06-14 14:17:26,013 INFO L140 encePairwiseOnDemand]: 54/64 looper letters, 115 selfloop transitions, 41 changer transitions 0/171 dead transitions. [2024-06-14 14:17:26,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 171 transitions, 1569 flow [2024-06-14 14:17:26,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 14:17:26,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 14:17:26,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 185 transitions. [2024-06-14 14:17:26,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4817708333333333 [2024-06-14 14:17:26,015 INFO L175 Difference]: Start difference. First operand has 110 places, 122 transitions, 919 flow. Second operand 6 states and 185 transitions. [2024-06-14 14:17:26,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 171 transitions, 1569 flow [2024-06-14 14:17:26,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 171 transitions, 1563 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-06-14 14:17:26,135 INFO L231 Difference]: Finished difference. Result has 118 places, 140 transitions, 1232 flow [2024-06-14 14:17:26,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=913, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1232, PETRI_PLACES=118, PETRI_TRANSITIONS=140} [2024-06-14 14:17:26,136 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 52 predicate places. [2024-06-14 14:17:26,136 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 140 transitions, 1232 flow [2024-06-14 14:17:26,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.625) internal successors, (133), 8 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:17:26,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:17:26,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:17:26,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-14 14:17:26,137 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 14:17:26,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:17:26,137 INFO L85 PathProgramCache]: Analyzing trace with hash -457309398, now seen corresponding path program 2 times [2024-06-14 14:17:26,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:17:26,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095976167] [2024-06-14 14:17:26,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:17:26,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:17:26,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:17:27,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:17:27,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:17:27,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095976167] [2024-06-14 14:17:27,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095976167] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:17:27,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:17:27,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 14:17:27,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037081143] [2024-06-14 14:17:27,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:17:27,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 14:17:27,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:17:27,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 14:17:27,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-14 14:17:27,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 64 [2024-06-14 14:17:27,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 140 transitions, 1232 flow. Second operand has 8 states, 8 states have (on average 16.625) internal successors, (133), 8 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:17:27,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:17:27,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 64 [2024-06-14 14:17:27,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:17:29,726 INFO L124 PetriNetUnfolderBase]: 12896/19839 cut-off events. [2024-06-14 14:17:29,726 INFO L125 PetriNetUnfolderBase]: For 286542/286552 co-relation queries the response was YES. [2024-06-14 14:17:29,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87478 conditions, 19839 events. 12896/19839 cut-off events. For 286542/286552 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 126222 event pairs, 7679 based on Foata normal form. 10/19624 useless extension candidates. Maximal degree in co-relation 87424. Up to 17826 conditions per place. [2024-06-14 14:17:29,923 INFO L140 encePairwiseOnDemand]: 52/64 looper letters, 114 selfloop transitions, 57 changer transitions 0/186 dead transitions. [2024-06-14 14:17:29,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 186 transitions, 1879 flow [2024-06-14 14:17:29,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 14:17:29,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 14:17:29,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 209 transitions. [2024-06-14 14:17:29,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46651785714285715 [2024-06-14 14:17:29,925 INFO L175 Difference]: Start difference. First operand has 118 places, 140 transitions, 1232 flow. Second operand 7 states and 209 transitions. [2024-06-14 14:17:29,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 186 transitions, 1879 flow [2024-06-14 14:17:30,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 186 transitions, 1821 flow, removed 24 selfloop flow, removed 1 redundant places. [2024-06-14 14:17:30,094 INFO L231 Difference]: Finished difference. Result has 126 places, 150 transitions, 1471 flow [2024-06-14 14:17:30,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=1174, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1471, PETRI_PLACES=126, PETRI_TRANSITIONS=150} [2024-06-14 14:17:30,094 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 60 predicate places. [2024-06-14 14:17:30,095 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 150 transitions, 1471 flow [2024-06-14 14:17:30,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.625) internal successors, (133), 8 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:17:30,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:17:30,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:17:30,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-14 14:17:30,095 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 14:17:30,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:17:30,096 INFO L85 PathProgramCache]: Analyzing trace with hash -1239561274, now seen corresponding path program 1 times [2024-06-14 14:17:30,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:17:30,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020222715] [2024-06-14 14:17:30,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:17:30,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:17:30,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:17:31,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:17:31,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:17:31,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020222715] [2024-06-14 14:17:31,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020222715] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:17:31,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:17:31,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 14:17:31,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505258695] [2024-06-14 14:17:31,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:17:31,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 14:17:31,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:17:31,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 14:17:31,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-14 14:17:31,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 64 [2024-06-14 14:17:31,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 150 transitions, 1471 flow. Second operand has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:17:31,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:17:31,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 64 [2024-06-14 14:17:31,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:17:34,077 INFO L124 PetriNetUnfolderBase]: 13498/20661 cut-off events. [2024-06-14 14:17:34,077 INFO L125 PetriNetUnfolderBase]: For 375510/375544 co-relation queries the response was YES. [2024-06-14 14:17:34,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95934 conditions, 20661 events. 13498/20661 cut-off events. For 375510/375544 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 129919 event pairs, 8357 based on Foata normal form. 10/20510 useless extension candidates. Maximal degree in co-relation 95875. Up to 19381 conditions per place. [2024-06-14 14:17:34,259 INFO L140 encePairwiseOnDemand]: 55/64 looper letters, 131 selfloop transitions, 17 changer transitions 0/172 dead transitions. [2024-06-14 14:17:34,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 172 transitions, 1853 flow [2024-06-14 14:17:34,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 14:17:34,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 14:17:34,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 168 transitions. [2024-06-14 14:17:34,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-14 14:17:34,261 INFO L175 Difference]: Start difference. First operand has 126 places, 150 transitions, 1471 flow. Second operand 6 states and 168 transitions. [2024-06-14 14:17:34,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 172 transitions, 1853 flow [2024-06-14 14:17:34,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 172 transitions, 1755 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-14 14:17:34,454 INFO L231 Difference]: Finished difference. Result has 127 places, 153 transitions, 1461 flow [2024-06-14 14:17:34,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=1373, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1461, PETRI_PLACES=127, PETRI_TRANSITIONS=153} [2024-06-14 14:17:34,455 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 61 predicate places. [2024-06-14 14:17:34,455 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 153 transitions, 1461 flow [2024-06-14 14:17:34,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.75) internal successors, (134), 8 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:17:34,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:17:34,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:17:34,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-14 14:17:34,456 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 14:17:34,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:17:34,456 INFO L85 PathProgramCache]: Analyzing trace with hash 977695819, now seen corresponding path program 1 times [2024-06-14 14:17:34,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:17:34,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241291279] [2024-06-14 14:17:34,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:17:34,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:17:34,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:17:35,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:17:35,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:17:35,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241291279] [2024-06-14 14:17:35,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241291279] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:17:35,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:17:35,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 14:17:35,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890097590] [2024-06-14 14:17:35,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:17:35,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 14:17:35,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:17:35,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 14:17:35,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 14:17:35,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 64 [2024-06-14 14:17:35,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 153 transitions, 1461 flow. Second operand has 9 states, 9 states have (on average 15.555555555555555) internal successors, (140), 9 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:17:35,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:17:35,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 64 [2024-06-14 14:17:35,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:17:38,265 INFO L124 PetriNetUnfolderBase]: 13947/21094 cut-off events. [2024-06-14 14:17:38,266 INFO L125 PetriNetUnfolderBase]: For 388745/388772 co-relation queries the response was YES. [2024-06-14 14:17:38,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100635 conditions, 21094 events. 13947/21094 cut-off events. For 388745/388772 co-relation queries the response was YES. Maximal size of possible extension queue 469. Compared 130280 event pairs, 8321 based on Foata normal form. 20/20949 useless extension candidates. Maximal degree in co-relation 100577. Up to 19739 conditions per place. [2024-06-14 14:17:38,398 INFO L140 encePairwiseOnDemand]: 53/64 looper letters, 131 selfloop transitions, 44 changer transitions 0/189 dead transitions. [2024-06-14 14:17:38,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 189 transitions, 1972 flow [2024-06-14 14:17:38,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 14:17:38,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 14:17:38,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 198 transitions. [2024-06-14 14:17:38,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4419642857142857 [2024-06-14 14:17:38,401 INFO L175 Difference]: Start difference. First operand has 127 places, 153 transitions, 1461 flow. Second operand 7 states and 198 transitions. [2024-06-14 14:17:38,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 189 transitions, 1972 flow [2024-06-14 14:17:38,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 189 transitions, 1908 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-06-14 14:17:38,551 INFO L231 Difference]: Finished difference. Result has 130 places, 156 transitions, 1544 flow [2024-06-14 14:17:38,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=1397, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1544, PETRI_PLACES=130, PETRI_TRANSITIONS=156} [2024-06-14 14:17:38,551 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 64 predicate places. [2024-06-14 14:17:38,552 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 156 transitions, 1544 flow [2024-06-14 14:17:38,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.555555555555555) internal successors, (140), 9 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:17:38,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:17:38,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:17:38,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-14 14:17:38,552 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 14:17:38,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:17:38,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1841630684, now seen corresponding path program 1 times [2024-06-14 14:17:38,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:17:38,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132740452] [2024-06-14 14:17:38,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:17:38,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:17:38,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:17:39,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:17:39,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:17:39,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132740452] [2024-06-14 14:17:39,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132740452] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:17:39,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:17:39,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 14:17:39,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397813373] [2024-06-14 14:17:39,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:17:39,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 14:17:39,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:17:39,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 14:17:39,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-14 14:17:39,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 64 [2024-06-14 14:17:39,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 156 transitions, 1544 flow. Second operand has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:17:39,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:17:39,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 64 [2024-06-14 14:17:39,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:17:41,735 INFO L124 PetriNetUnfolderBase]: 10291/16546 cut-off events. [2024-06-14 14:17:41,735 INFO L125 PetriNetUnfolderBase]: For 324899/324983 co-relation queries the response was YES. [2024-06-14 14:17:41,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79845 conditions, 16546 events. 10291/16546 cut-off events. For 324899/324983 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 110909 event pairs, 4332 based on Foata normal form. 15/16414 useless extension candidates. Maximal degree in co-relation 79787. Up to 14271 conditions per place. [2024-06-14 14:17:41,886 INFO L140 encePairwiseOnDemand]: 54/64 looper letters, 155 selfloop transitions, 26 changer transitions 0/200 dead transitions. [2024-06-14 14:17:41,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 200 transitions, 2144 flow [2024-06-14 14:17:41,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 14:17:41,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 14:17:41,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 181 transitions. [2024-06-14 14:17:41,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.565625 [2024-06-14 14:17:41,888 INFO L175 Difference]: Start difference. First operand has 130 places, 156 transitions, 1544 flow. Second operand 5 states and 181 transitions. [2024-06-14 14:17:41,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 200 transitions, 2144 flow [2024-06-14 14:17:42,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 200 transitions, 2027 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-14 14:17:42,075 INFO L231 Difference]: Finished difference. Result has 132 places, 165 transitions, 1605 flow [2024-06-14 14:17:42,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=1427, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1605, PETRI_PLACES=132, PETRI_TRANSITIONS=165} [2024-06-14 14:17:42,076 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 66 predicate places. [2024-06-14 14:17:42,076 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 165 transitions, 1605 flow [2024-06-14 14:17:42,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:17:42,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:17:42,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:17:42,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-14 14:17:42,077 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 14:17:42,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:17:42,078 INFO L85 PathProgramCache]: Analyzing trace with hash -2058065325, now seen corresponding path program 2 times [2024-06-14 14:17:42,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:17:42,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629913864] [2024-06-14 14:17:42,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:17:42,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:17:42,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:17:43,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:17:43,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:17:43,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629913864] [2024-06-14 14:17:43,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629913864] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:17:43,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:17:43,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 14:17:43,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70559254] [2024-06-14 14:17:43,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:17:43,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 14:17:43,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:17:43,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 14:17:43,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-14 14:17:43,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 64 [2024-06-14 14:17:43,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 165 transitions, 1605 flow. Second operand has 9 states, 9 states have (on average 15.555555555555555) internal successors, (140), 9 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:17:43,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:17:43,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 64 [2024-06-14 14:17:43,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:17:46,140 INFO L124 PetriNetUnfolderBase]: 14179/21474 cut-off events. [2024-06-14 14:17:46,140 INFO L125 PetriNetUnfolderBase]: For 487012/487202 co-relation queries the response was YES. [2024-06-14 14:17:46,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110615 conditions, 21474 events. 14179/21474 cut-off events. For 487012/487202 co-relation queries the response was YES. Maximal size of possible extension queue 469. Compared 133224 event pairs, 8355 based on Foata normal form. 18/21311 useless extension candidates. Maximal degree in co-relation 110554. Up to 19380 conditions per place. [2024-06-14 14:17:46,288 INFO L140 encePairwiseOnDemand]: 50/64 looper letters, 147 selfloop transitions, 83 changer transitions 0/245 dead transitions. [2024-06-14 14:17:46,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 245 transitions, 2816 flow [2024-06-14 14:17:46,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 14:17:46,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 14:17:46,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 251 transitions. [2024-06-14 14:17:46,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4357638888888889 [2024-06-14 14:17:46,290 INFO L175 Difference]: Start difference. First operand has 132 places, 165 transitions, 1605 flow. Second operand 9 states and 251 transitions. [2024-06-14 14:17:46,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 245 transitions, 2816 flow [2024-06-14 14:17:46,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 245 transitions, 2784 flow, removed 16 selfloop flow, removed 0 redundant places. [2024-06-14 14:17:46,501 INFO L231 Difference]: Finished difference. Result has 143 places, 193 transitions, 2271 flow [2024-06-14 14:17:46,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=1573, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2271, PETRI_PLACES=143, PETRI_TRANSITIONS=193} [2024-06-14 14:17:46,502 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 77 predicate places. [2024-06-14 14:17:46,502 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 193 transitions, 2271 flow [2024-06-14 14:17:46,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.555555555555555) internal successors, (140), 9 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:17:46,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:17:46,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:17:46,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-14 14:17:46,503 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 14:17:46,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:17:46,503 INFO L85 PathProgramCache]: Analyzing trace with hash -2057530575, now seen corresponding path program 3 times [2024-06-14 14:17:46,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:17:46,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486690064] [2024-06-14 14:17:46,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:17:46,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:17:46,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:17:47,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:17:47,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:17:47,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486690064] [2024-06-14 14:17:47,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486690064] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:17:47,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:17:47,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 14:17:47,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237047865] [2024-06-14 14:17:47,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:17:47,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 14:17:47,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:17:47,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 14:17:47,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-14 14:17:48,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 64 [2024-06-14 14:17:48,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 193 transitions, 2271 flow. Second operand has 9 states, 9 states have (on average 15.555555555555555) internal successors, (140), 9 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:17:48,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:17:48,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 64 [2024-06-14 14:17:48,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:17:52,416 INFO L124 PetriNetUnfolderBase]: 20032/30728 cut-off events. [2024-06-14 14:17:52,417 INFO L125 PetriNetUnfolderBase]: For 872128/872438 co-relation queries the response was YES. [2024-06-14 14:17:52,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143024 conditions, 30728 events. 20032/30728 cut-off events. For 872128/872438 co-relation queries the response was YES. Maximal size of possible extension queue 716. Compared 206103 event pairs, 12820 based on Foata normal form. 1094/31634 useless extension candidates. Maximal degree in co-relation 142957. Up to 19128 conditions per place. [2024-06-14 14:17:52,627 INFO L140 encePairwiseOnDemand]: 51/64 looper letters, 171 selfloop transitions, 61 changer transitions 4/251 dead transitions. [2024-06-14 14:17:52,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 251 transitions, 2980 flow [2024-06-14 14:17:52,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 14:17:52,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 14:17:52,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 260 transitions. [2024-06-14 14:17:52,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4513888888888889 [2024-06-14 14:17:52,628 INFO L175 Difference]: Start difference. First operand has 143 places, 193 transitions, 2271 flow. Second operand 9 states and 260 transitions. [2024-06-14 14:17:52,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 251 transitions, 2980 flow [2024-06-14 14:17:53,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 251 transitions, 2839 flow, removed 47 selfloop flow, removed 4 redundant places. [2024-06-14 14:17:53,036 INFO L231 Difference]: Finished difference. Result has 150 places, 185 transitions, 2114 flow [2024-06-14 14:17:53,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=1853, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2114, PETRI_PLACES=150, PETRI_TRANSITIONS=185} [2024-06-14 14:17:53,036 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 84 predicate places. [2024-06-14 14:17:53,036 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 185 transitions, 2114 flow [2024-06-14 14:17:53,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.555555555555555) internal successors, (140), 9 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:17:53,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:17:53,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:17:53,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-14 14:17:53,037 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 14:17:53,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:17:53,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1814965724, now seen corresponding path program 2 times [2024-06-14 14:17:53,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:17:53,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904574488] [2024-06-14 14:17:53,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:17:53,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:17:53,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:17:53,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:17:53,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:17:53,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904574488] [2024-06-14 14:17:53,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904574488] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:17:53,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:17:53,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 14:17:53,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510566138] [2024-06-14 14:17:53,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:17:53,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 14:17:53,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:17:53,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 14:17:53,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-14 14:17:54,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 64 [2024-06-14 14:17:54,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 185 transitions, 2114 flow. Second operand has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:17:54,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:17:54,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 64 [2024-06-14 14:17:54,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:17:57,269 INFO L124 PetriNetUnfolderBase]: 14310/23514 cut-off events. [2024-06-14 14:17:57,269 INFO L125 PetriNetUnfolderBase]: For 526105/526437 co-relation queries the response was YES. [2024-06-14 14:17:57,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112601 conditions, 23514 events. 14310/23514 cut-off events. For 526105/526437 co-relation queries the response was YES. Maximal size of possible extension queue 660. Compared 173340 event pairs, 7102 based on Foata normal form. 8/23291 useless extension candidates. Maximal degree in co-relation 112530. Up to 20359 conditions per place. [2024-06-14 14:17:57,619 INFO L140 encePairwiseOnDemand]: 53/64 looper letters, 166 selfloop transitions, 34 changer transitions 0/222 dead transitions. [2024-06-14 14:17:57,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 222 transitions, 2765 flow [2024-06-14 14:17:57,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 14:17:57,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 14:17:57,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 177 transitions. [2024-06-14 14:17:57,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.553125 [2024-06-14 14:17:57,622 INFO L175 Difference]: Start difference. First operand has 150 places, 185 transitions, 2114 flow. Second operand 5 states and 177 transitions. [2024-06-14 14:17:57,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 222 transitions, 2765 flow [2024-06-14 14:17:57,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 222 transitions, 2591 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-14 14:17:57,917 INFO L231 Difference]: Finished difference. Result has 150 places, 194 transitions, 2123 flow [2024-06-14 14:17:57,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=1944, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2123, PETRI_PLACES=150, PETRI_TRANSITIONS=194} [2024-06-14 14:17:57,918 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 84 predicate places. [2024-06-14 14:17:57,918 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 194 transitions, 2123 flow [2024-06-14 14:17:57,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:17:57,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:17:57,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:17:57,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-14 14:17:57,918 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 14:17:57,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:17:57,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1828284316, now seen corresponding path program 1 times [2024-06-14 14:17:57,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:17:57,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736966861] [2024-06-14 14:17:57,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:17:57,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:17:57,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:17:58,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:17:58,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:17:58,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736966861] [2024-06-14 14:17:58,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736966861] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:17:58,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:17:58,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 14:17:58,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769146334] [2024-06-14 14:17:58,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:17:58,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 14:17:58,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:17:58,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 14:17:58,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-14 14:17:59,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 64 [2024-06-14 14:17:59,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 194 transitions, 2123 flow. Second operand has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:17:59,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:17:59,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 64 [2024-06-14 14:17:59,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:18:02,372 INFO L124 PetriNetUnfolderBase]: 14549/24146 cut-off events. [2024-06-14 14:18:02,372 INFO L125 PetriNetUnfolderBase]: For 492045/492080 co-relation queries the response was YES. [2024-06-14 14:18:02,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113124 conditions, 24146 events. 14549/24146 cut-off events. For 492045/492080 co-relation queries the response was YES. Maximal size of possible extension queue 638. Compared 178746 event pairs, 9003 based on Foata normal form. 4/24063 useless extension candidates. Maximal degree in co-relation 113051. Up to 21177 conditions per place. [2024-06-14 14:18:02,540 INFO L140 encePairwiseOnDemand]: 54/64 looper letters, 176 selfloop transitions, 20 changer transitions 0/228 dead transitions. [2024-06-14 14:18:02,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 228 transitions, 2741 flow [2024-06-14 14:18:02,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 14:18:02,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 14:18:02,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 173 transitions. [2024-06-14 14:18:02,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.540625 [2024-06-14 14:18:02,542 INFO L175 Difference]: Start difference. First operand has 150 places, 194 transitions, 2123 flow. Second operand 5 states and 173 transitions. [2024-06-14 14:18:02,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 228 transitions, 2741 flow [2024-06-14 14:18:02,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 228 transitions, 2721 flow, removed 10 selfloop flow, removed 0 redundant places. [2024-06-14 14:18:02,803 INFO L231 Difference]: Finished difference. Result has 156 places, 202 transitions, 2236 flow [2024-06-14 14:18:02,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=2103, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2236, PETRI_PLACES=156, PETRI_TRANSITIONS=202} [2024-06-14 14:18:02,804 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 90 predicate places. [2024-06-14 14:18:02,804 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 202 transitions, 2236 flow [2024-06-14 14:18:02,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:18:02,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:18:02,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:18:02,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-14 14:18:02,804 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 14:18:02,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:18:02,805 INFO L85 PathProgramCache]: Analyzing trace with hash 130698374, now seen corresponding path program 2 times [2024-06-14 14:18:02,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:18:02,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424089155] [2024-06-14 14:18:02,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:18:02,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:18:02,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:18:03,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:18:03,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:18:03,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424089155] [2024-06-14 14:18:03,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424089155] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:18:03,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:18:03,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 14:18:03,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738490734] [2024-06-14 14:18:03,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:18:03,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 14:18:03,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:18:03,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 14:18:03,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-14 14:18:03,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 64 [2024-06-14 14:18:03,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 202 transitions, 2236 flow. Second operand has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:18:03,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:18:03,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 64 [2024-06-14 14:18:03,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:18:07,395 INFO L124 PetriNetUnfolderBase]: 14541/24137 cut-off events. [2024-06-14 14:18:07,395 INFO L125 PetriNetUnfolderBase]: For 526514/526552 co-relation queries the response was YES. [2024-06-14 14:18:07,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116938 conditions, 24137 events. 14541/24137 cut-off events. For 526514/526552 co-relation queries the response was YES. Maximal size of possible extension queue 638. Compared 178734 event pairs, 9020 based on Foata normal form. 4/24053 useless extension candidates. Maximal degree in co-relation 116859. Up to 21173 conditions per place. [2024-06-14 14:18:07,620 INFO L140 encePairwiseOnDemand]: 56/64 looper letters, 168 selfloop transitions, 23 changer transitions 0/223 dead transitions. [2024-06-14 14:18:07,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 223 transitions, 2774 flow [2024-06-14 14:18:07,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 14:18:07,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 14:18:07,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 161 transitions. [2024-06-14 14:18:07,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.503125 [2024-06-14 14:18:07,623 INFO L175 Difference]: Start difference. First operand has 156 places, 202 transitions, 2236 flow. Second operand 5 states and 161 transitions. [2024-06-14 14:18:07,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 223 transitions, 2774 flow [2024-06-14 14:18:08,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 223 transitions, 2750 flow, removed 12 selfloop flow, removed 0 redundant places. [2024-06-14 14:18:08,003 INFO L231 Difference]: Finished difference. Result has 161 places, 207 transitions, 2332 flow [2024-06-14 14:18:08,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=2222, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2332, PETRI_PLACES=161, PETRI_TRANSITIONS=207} [2024-06-14 14:18:08,003 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 95 predicate places. [2024-06-14 14:18:08,003 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 207 transitions, 2332 flow [2024-06-14 14:18:08,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:18:08,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:18:08,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:18:08,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-14 14:18:08,004 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 14:18:08,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:18:08,004 INFO L85 PathProgramCache]: Analyzing trace with hash -561433645, now seen corresponding path program 1 times [2024-06-14 14:18:08,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:18:08,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674295928] [2024-06-14 14:18:08,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:18:08,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:18:08,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:18:09,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:18:09,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:18:09,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674295928] [2024-06-14 14:18:09,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674295928] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:18:09,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:18:09,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 14:18:09,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231313593] [2024-06-14 14:18:09,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:18:09,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 14:18:09,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:18:09,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 14:18:09,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-06-14 14:18:10,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 64 [2024-06-14 14:18:10,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 207 transitions, 2332 flow. Second operand has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 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) [2024-06-14 14:18:10,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:18:10,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 64 [2024-06-14 14:18:10,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 14:18:14,140 INFO L124 PetriNetUnfolderBase]: 18379/29040 cut-off events. [2024-06-14 14:18:14,140 INFO L125 PetriNetUnfolderBase]: For 734515/734734 co-relation queries the response was YES. [2024-06-14 14:18:14,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146969 conditions, 29040 events. 18379/29040 cut-off events. For 734515/734734 co-relation queries the response was YES. Maximal size of possible extension queue 687. Compared 203578 event pairs, 9396 based on Foata normal form. 14/28904 useless extension candidates. Maximal degree in co-relation 146887. Up to 26171 conditions per place. [2024-06-14 14:18:14,471 INFO L140 encePairwiseOnDemand]: 54/64 looper letters, 184 selfloop transitions, 52 changer transitions 0/252 dead transitions. [2024-06-14 14:18:14,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 252 transitions, 3089 flow [2024-06-14 14:18:14,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 14:18:14,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 14:18:14,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 185 transitions. [2024-06-14 14:18:14,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4817708333333333 [2024-06-14 14:18:14,473 INFO L175 Difference]: Start difference. First operand has 161 places, 207 transitions, 2332 flow. Second operand 6 states and 185 transitions. [2024-06-14 14:18:14,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 252 transitions, 3089 flow [2024-06-14 14:18:15,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 252 transitions, 3034 flow, removed 19 selfloop flow, removed 1 redundant places. [2024-06-14 14:18:15,176 INFO L231 Difference]: Finished difference. Result has 167 places, 213 transitions, 2483 flow [2024-06-14 14:18:15,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=2277, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2483, PETRI_PLACES=167, PETRI_TRANSITIONS=213} [2024-06-14 14:18:15,176 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 101 predicate places. [2024-06-14 14:18:15,176 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 213 transitions, 2483 flow [2024-06-14 14:18:15,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.666666666666666) internal successors, (141), 9 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) [2024-06-14 14:18:15,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 14:18:15,177 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 14:18:15,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-14 14:18:15,177 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-14 14:18:15,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 14:18:15,178 INFO L85 PathProgramCache]: Analyzing trace with hash 2032937464, now seen corresponding path program 1 times [2024-06-14 14:18:15,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 14:18:15,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350149759] [2024-06-14 14:18:15,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 14:18:15,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 14:18:15,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 14:18:16,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 14:18:16,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 14:18:16,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350149759] [2024-06-14 14:18:16,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350149759] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 14:18:16,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 14:18:16,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 14:18:16,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102233991] [2024-06-14 14:18:16,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 14:18:16,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 14:18:16,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 14:18:16,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 14:18:16,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-14 14:18:17,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 64 [2024-06-14 14:18:17,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 213 transitions, 2483 flow. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 9 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 14:18:17,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 14:18:17,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 64 [2024-06-14 14:18:17,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand