./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-deagle/circular_buffer_bad.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/circular_buffer_bad.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 59af5db6 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-deagle/circular_buffer_bad.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/circular_buffer_bad.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-dev-59af5db-m [2024-02-02 09:37:01,367 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-02 09:37:01,426 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-02 09:37:01,432 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-02 09:37:01,432 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-02 09:37:01,457 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-02 09:37:01,457 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-02 09:37:01,458 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-02 09:37:01,458 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-02 09:37:01,461 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-02 09:37:01,461 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-02 09:37:01,462 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-02 09:37:01,462 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-02 09:37:01,463 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-02 09:37:01,463 INFO L153 SettingsManager]: * Use SBE=true [2024-02-02 09:37:01,463 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-02 09:37:01,464 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-02 09:37:01,464 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-02 09:37:01,464 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-02 09:37:01,464 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-02 09:37:01,464 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-02 09:37:01,465 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-02 09:37:01,465 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-02 09:37:01,465 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-02 09:37:01,465 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-02 09:37:01,466 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-02 09:37:01,466 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-02 09:37:01,466 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-02 09:37:01,466 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-02 09:37:01,467 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-02 09:37:01,467 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-02 09:37:01,468 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-02 09:37:01,468 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-02 09:37:01,468 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-02 09:37:01,468 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-02 09:37:01,468 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-02 09:37:01,469 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-02 09:37:01,469 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-02 09:37:01,469 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-02 09:37:01,469 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-02 09:37:01,469 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-02 09:37:01,470 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-02 09:37:01,470 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-02 09:37:01,470 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-02 09:37:01,651 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-02 09:37:01,665 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-02 09:37:01,667 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-02 09:37:01,668 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-02 09:37:01,669 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-02 09:37:01,669 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/circular_buffer_bad.yml/witness.yml [2024-02-02 09:37:01,809 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-02 09:37:01,809 INFO L274 PluginConnector]: CDTParser initialized [2024-02-02 09:37:01,810 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-deagle/circular_buffer_bad.i [2024-02-02 09:37:02,799 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-02 09:37:02,988 INFO L384 CDTParser]: Found 1 translation units. [2024-02-02 09:37:02,992 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_bad.i [2024-02-02 09:37:03,009 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6ac0a447/9525811e13534cbab9521310b0148b12/FLAG3160366db [2024-02-02 09:37:03,037 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c6ac0a447/9525811e13534cbab9521310b0148b12 [2024-02-02 09:37:03,037 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-02 09:37:03,039 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-02 09:37:03,042 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-02 09:37:03,042 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-02 09:37:03,045 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-02 09:37:03,046 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:37:01" (1/2) ... [2024-02-02 09:37:03,047 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7456ecc3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:37:03, skipping insertion in model container [2024-02-02 09:37:03,047 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:37:01" (1/2) ... [2024-02-02 09:37:03,049 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3d619e0a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 02.02 09:37:03, skipping insertion in model container [2024-02-02 09:37:03,049 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:37:03" (2/2) ... [2024-02-02 09:37:03,049 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7456ecc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:37:03, skipping insertion in model container [2024-02-02 09:37:03,050 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:37:03" (2/2) ... [2024-02-02 09:37:03,050 INFO L86 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-02 09:37:03,146 INFO L99 nessWitnessExtractor]: Found the following entries in the witness: [2024-02-02 09:37:03,147 INFO L101 nessWitnessExtractor]: Location invariant before [L742-L742] ((unsigned long )arg == 0UL) && (((((i == 3 || i == 2) || i == 1) || (0 == i && i == 0)) || (5 <= i && i <= 6)) || i == 4) [2024-02-02 09:37:03,147 INFO L101 nessWitnessExtractor]: Location invariant before [L702-L702] (receive == (_Bool)1) && (send == (_Bool)0 || send == (_Bool)1) [2024-02-02 09:37:03,147 INFO L101 nessWitnessExtractor]: Location invariant before [L760-L760] (send == (_Bool)1) && (receive == (_Bool)0) [2024-02-02 09:37:03,147 INFO L101 nessWitnessExtractor]: Location invariant before [L712-L713] (((((0 <= b) && (b <= 6)) && (b <= 127)) && (send == (_Bool)1)) && (receive == (_Bool)0 || receive == (_Bool)1)) && ((((((b == 0 || b == 1) || b == 2) || b == 3) || b == 4) || b == 5) || b == 6) [2024-02-02 09:37:03,147 INFO L101 nessWitnessExtractor]: Location invariant before [L729-L729] (((send == (_Bool)1) && ((unsigned long )arg == 0UL)) && (receive == (_Bool)0 || receive == (_Bool)1)) && ((((((i == 5 || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0)) || i == 6) [2024-02-02 09:37:03,148 INFO L101 nessWitnessExtractor]: Loop invariant at [L740-L751] (unsigned long )arg == 0UL [2024-02-02 09:37:03,148 INFO L101 nessWitnessExtractor]: Location invariant before [L690-L690] (((10 == max) && (send == (_Bool)0)) && (receive == (_Bool)0)) && (max == 10) [2024-02-02 09:37:03,148 INFO L101 nessWitnessExtractor]: Location invariant before [L747-L747] (((receive == (_Bool)1) && ((unsigned long )arg == 0UL)) && (send == (_Bool)0 || send == (_Bool)1)) && (((((i == 3 || i == 2) || i == 1) || (0 == i && i == 0)) || ((((-128 <= i && 5 <= i) && i <= 6) && i <= 127) && (((((((i == -1 || i == 0) || i == 1) || i == 2) || i == 3) || i == 4) || i == 5) || i == 6))) || i == 4) [2024-02-02 09:37:03,148 INFO L101 nessWitnessExtractor]: Location invariant before [L727-L732] ((((unsigned long )arg == 0UL) && (send == (_Bool)0 || send == (_Bool)1)) && (receive == (_Bool)0 || receive == (_Bool)1)) && ((((((i == 6 || i == 5) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0)) [2024-02-02 09:37:03,148 INFO L101 nessWitnessExtractor]: Location invariant after [L745-L746] (((receive == (_Bool)1) && ((unsigned long )arg == 0UL)) && (send == (_Bool)0 || send == (_Bool)1)) && (((((i == 3 || i == 2) || i == 1) || (0 == i && i == 0)) || (5 <= i && i <= 6)) || i == 4) [2024-02-02 09:37:03,148 INFO L101 nessWitnessExtractor]: Location invariant before [L745-L746] (((receive == (_Bool)1) && ((unsigned long )arg == 0UL)) && (send == (_Bool)0 || send == (_Bool)1)) && ((((((((((i == 3 || i == 2) || i == 2) || i == 1) || i == 1) || (0 == i && i == 0)) || (0 == i && i == 0)) || (5 <= i && i <= 6)) || (5 <= i && i <= 6)) || i == 4) || i == 4) [2024-02-02 09:37:03,149 INFO L101 nessWitnessExtractor]: Location invariant before [L748-L748] (((receive == (_Bool)0) && ((unsigned long )arg == 0UL)) && (send == (_Bool)0 || send == (_Bool)1)) && (((((i == 3 || i == 2) || i == 1) || (0 == i && i == 0)) || ((((-128 <= i && 5 <= i) && i <= 6) && i <= 127) && (((((((i == -1 || i == 0) || i == 1) || i == 2) || i == 3) || i == 4) || i == 5) || i == 6))) || i == 4) [2024-02-02 09:37:03,149 INFO L101 nessWitnessExtractor]: Location invariant before [L726-L726] ((unsigned long )arg == 0UL) && ((((((i == 6 || i == 5) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0)) [2024-02-02 09:37:03,149 INFO L101 nessWitnessExtractor]: Location invariant after [L688-L692] (((10 == max) && (send == (_Bool)0)) && (receive == (_Bool)0)) && (max == 10) [2024-02-02 09:37:03,149 INFO L101 nessWitnessExtractor]: Location invariant before [L695-L703] (receive == (_Bool)1) && (send == (_Bool)0 || send == (_Bool)1) [2024-02-02 09:37:03,149 INFO L101 nessWitnessExtractor]: Location invariant before [L733-L733] (((send == (_Bool)0) && ((unsigned long )arg == 0UL)) && (receive == (_Bool)0 || receive == (_Bool)1)) && ((((((i == 5 || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0)) || i == 6) [2024-02-02 09:37:03,149 INFO L101 nessWitnessExtractor]: Location invariant before [L752-L752] (i == 7) && ((unsigned long )arg == 0UL) [2024-02-02 09:37:03,149 INFO L101 nessWitnessExtractor]: Location invariant before [L730-L730] (((send == (_Bool)1) && ((unsigned long )arg == 0UL)) && (receive == (_Bool)0 || receive == (_Bool)1)) && ((((((i == 5 || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0)) || i == 6) [2024-02-02 09:37:03,149 INFO L101 nessWitnessExtractor]: Location invariant before [L698-L698] (receive == (_Bool)1) && (send == (_Bool)0 || send == (_Bool)1) [2024-02-02 09:37:03,150 INFO L101 nessWitnessExtractor]: Loop invariant at [L724-L734] (unsigned long )arg == 0UL [2024-02-02 09:37:03,150 INFO L101 nessWitnessExtractor]: Location invariant before [L707-L718] (((((0 <= b) && (b <= 6)) && (b <= 127)) && (send == (_Bool)1)) && (receive == (_Bool)0 || receive == (_Bool)1)) && ((((((b == 0 || b == 1) || b == 2) || b == 3) || b == 4) || b == 5) || b == 6) [2024-02-02 09:37:03,150 INFO L101 nessWitnessExtractor]: Location invariant before [L743-L749] ((((unsigned long )arg == 0UL) && (send == (_Bool)0 || send == (_Bool)1)) && (receive == (_Bool)0 || receive == (_Bool)1)) && (((((i == 3 || i == 2) || i == 1) || (0 == i && i == 0)) || (5 <= i && i <= 6)) || i == 4) [2024-02-02 09:37:03,151 INFO L101 nessWitnessExtractor]: Location invariant before [L731-L731] (((send == (_Bool)0) && ((unsigned long )arg == 0UL)) && (receive == (_Bool)0 || receive == (_Bool)1)) && ((((((i == 5 || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0)) || i == 6) [2024-02-02 09:37:03,151 INFO L101 nessWitnessExtractor]: Location invariant before [L761-L761] (send == (_Bool)1) && (receive == (_Bool)0) [2024-02-02 09:37:03,151 INFO L101 nessWitnessExtractor]: Location invariant before [L750-L750] (((receive == (_Bool)0) && ((unsigned long )arg == 0UL)) && (send == (_Bool)0 || send == (_Bool)1)) && (((((i == 3 || i == 2) || i == 1) || (0 == i && i == 0)) || (5 <= i && i <= 6)) || i == 4) [2024-02-02 09:37:03,151 INFO L101 nessWitnessExtractor]: Location invariant before [L758-L758] (send == (_Bool)0) && (receive == (_Bool)0) [2024-02-02 09:37:03,151 INFO L101 nessWitnessExtractor]: Location invariant before [L719-L719] (((((0 <= b) && (b <= 6)) && (b <= 127)) && (send == (_Bool)1)) && (receive == (_Bool)0 || receive == (_Bool)1)) && ((((((b == 0 || b == 1) || b == 2) || b == 3) || b == 4) || b == 5) || b == 6) [2024-02-02 09:37:03,151 INFO L101 nessWitnessExtractor]: Location invariant before [L735-L735] (i == 7) && ((unsigned long )arg == 0UL) [2024-02-02 09:37:03,151 INFO L101 nessWitnessExtractor]: Location invariant before [L697-L697] (receive == (_Bool)1) && (send == (_Bool)0 || send == (_Bool)1) [2024-02-02 09:37:03,151 INFO L101 nessWitnessExtractor]: Location invariant before [L710-L710] (((((0 <= b) && (b <= 6)) && (b <= 127)) && (send == (_Bool)1)) && (receive == (_Bool)0 || receive == (_Bool)1)) && ((((((b == 0 || b == 1) || b == 2) || b == 3) || b == 4) || b == 5) || b == 6) [2024-02-02 09:37:03,152 INFO L101 nessWitnessExtractor]: Location invariant before [L717-L717] (((((0 <= b) && (b <= 6)) && (b <= 127)) && (send == (_Bool)1)) && (receive == (_Bool)0 || receive == (_Bool)1)) && ((((((b == 0 || b == 1) || b == 2) || b == 3) || b == 4) || b == 5) || b == 6) [2024-02-02 09:37:03,152 INFO L101 nessWitnessExtractor]: Location invariant before [L759-L759] (send == (_Bool)0) && (receive == (_Bool)0) [2024-02-02 09:37:03,152 INFO L101 nessWitnessExtractor]: Location invariant before [L691-L691] (((10 == max) && (send == (_Bool)0)) && (receive == (_Bool)0)) && (max == 10) [2024-02-02 09:37:03,152 INFO L101 nessWitnessExtractor]: Location invariant before [L709-L709] (((((0 <= b) && (b <= 6)) && (b <= 127)) && (send == (_Bool)1)) && (receive == (_Bool)0 || receive == (_Bool)1)) && ((((((b == 0 || b == 1) || b == 2) || b == 3) || b == 4) || b == 5) || b == 6) [2024-02-02 09:37:03,152 INFO L101 nessWitnessExtractor]: Location invariant before [L757-L757] (send == (_Bool)0) && (receive == (_Bool)0) [2024-02-02 09:37:03,186 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-02 09:37:03,418 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_bad.i[30440,30453] [2024-02-02 09:37:03,427 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_bad.i[30895,30908] [2024-02-02 09:37:03,431 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-02 09:37:03,442 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local [2024-02-02 09:37:03,494 WARN L424 MainDispatcher]: Unable to annotate void initLog(int max) { buffer_size = max; first = next = 0; } with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-02 09:37:03,531 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_bad.i[30440,30453] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-02 09:37:03,591 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_bad.i[30895,30908] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-02 09:37:03,604 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-02 09:37:03,629 INFO L206 MainTranslator]: Completed translation [2024-02-02 09:37:03,630 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:37:03 WrapperNode [2024-02-02 09:37:03,630 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-02 09:37:03,630 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-02 09:37:03,630 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-02 09:37:03,630 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-02 09:37:03,635 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:37:03" (1/1) ... [2024-02-02 09:37:03,647 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:37:03" (1/1) ... [2024-02-02 09:37:03,687 INFO L138 Inliner]: procedures = 169, calls = 38, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 177 [2024-02-02 09:37:03,688 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-02 09:37:03,694 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-02 09:37:03,694 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-02 09:37:03,694 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-02 09:37:03,702 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:37:03" (1/1) ... [2024-02-02 09:37:03,702 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:37:03" (1/1) ... [2024-02-02 09:37:03,705 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:37:03" (1/1) ... [2024-02-02 09:37:03,717 INFO L175 MemorySlicer]: Split 18 memory accesses to 6 slices as follows [2, 2, 1, 3, 8, 2]. 44 percent of accesses are in the largest equivalence class. The 11 initializations are split as follows [2, 0, 1, 0, 8, 0]. The 4 writes are split as follows [0, 1, 0, 2, 0, 1]. [2024-02-02 09:37:03,718 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:37:03" (1/1) ... [2024-02-02 09:37:03,718 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:37:03" (1/1) ... [2024-02-02 09:37:03,732 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:37:03" (1/1) ... [2024-02-02 09:37:03,734 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:37:03" (1/1) ... [2024-02-02 09:37:03,736 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:37:03" (1/1) ... [2024-02-02 09:37:03,738 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:37:03" (1/1) ... [2024-02-02 09:37:03,741 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-02 09:37:03,742 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-02 09:37:03,742 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-02 09:37:03,742 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-02 09:37:03,743 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:37:03" (1/1) ... [2024-02-02 09:37:03,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-02 09:37:03,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-02 09:37:03,786 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-02-02 09:37:03,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-02-02 09:37:03,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-02 09:37:03,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-02 09:37:03,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-02 09:37:03,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-02 09:37:03,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-02 09:37:03,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-02-02 09:37:03,818 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-02-02 09:37:03,818 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-02-02 09:37:03,818 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-02-02 09:37:03,818 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-02-02 09:37:03,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-02 09:37:03,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-02 09:37:03,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-02 09:37:03,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-02 09:37:03,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-02 09:37:03,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-02-02 09:37:03,819 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-02-02 09:37:03,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-02 09:37:03,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-02 09:37:03,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-02 09:37:03,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-02-02 09:37:03,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-02-02 09:37:03,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-02-02 09:37:03,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-02-02 09:37:03,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-02-02 09:37:03,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-02-02 09:37:03,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-02 09:37:03,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-02 09:37:03,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-02 09:37:03,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-02 09:37:03,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-02 09:37:03,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-02-02 09:37:03,822 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-02-02 09:37:03,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-02 09:37:03,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-02 09:37:03,824 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-02 09:37:03,951 INFO L244 CfgBuilder]: Building ICFG [2024-02-02 09:37:03,952 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-02 09:37:04,273 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-02 09:37:04,274 INFO L293 CfgBuilder]: Performing block encoding [2024-02-02 09:37:04,383 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-02 09:37:04,384 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-02-02 09:37:04,384 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:37:04 BoogieIcfgContainer [2024-02-02 09:37:04,385 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-02 09:37:04,387 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-02 09:37:04,387 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-02 09:37:04,389 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-02 09:37:04,390 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 02.02 09:37:01" (1/4) ... [2024-02-02 09:37:04,390 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@583ae5c2 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 02.02 09:37:04, skipping insertion in model container [2024-02-02 09:37:04,391 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.02 09:37:03" (2/4) ... [2024-02-02 09:37:04,391 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@583ae5c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 09:37:04, skipping insertion in model container [2024-02-02 09:37:04,391 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:37:03" (3/4) ... [2024-02-02 09:37:04,392 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@583ae5c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 09:37:04, skipping insertion in model container [2024-02-02 09:37:04,392 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:37:04" (4/4) ... [2024-02-02 09:37:04,393 INFO L112 eAbstractionObserver]: Analyzing ICFG circular_buffer_bad.i [2024-02-02 09:37:04,406 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-02 09:37:04,407 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2024-02-02 09:37:04,407 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-02 09:37:04,494 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-02-02 09:37:04,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 115 transitions, 244 flow [2024-02-02 09:37:04,570 INFO L124 PetriNetUnfolderBase]: 8/113 cut-off events. [2024-02-02 09:37:04,571 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-02-02 09:37:04,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 113 events. 8/113 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 369 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 95. Up to 2 conditions per place. [2024-02-02 09:37:04,574 INFO L82 GeneralOperation]: Start removeDead. Operand has 114 places, 115 transitions, 244 flow [2024-02-02 09:37:04,579 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 110 places, 111 transitions, 231 flow [2024-02-02 09:37:04,586 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-02 09:37:04,595 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;@6abade7d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-02 09:37:04,596 INFO L358 AbstractCegarLoop]: Starting to check reachability of 71 error locations. [2024-02-02 09:37:04,598 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-02 09:37:04,598 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-02-02 09:37:04,598 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-02 09:37:04,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:37:04,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-02-02 09:37:04,599 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 68 more)] === [2024-02-02 09:37:04,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:37:04,603 INFO L85 PathProgramCache]: Analyzing trace with hash 14150, now seen corresponding path program 1 times [2024-02-02 09:37:04,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:37:04,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909672412] [2024-02-02 09:37:04,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:37:04,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:37:04,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:37:04,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:37:04,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:37:04,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909672412] [2024-02-02 09:37:04,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909672412] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:37:04,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:37:04,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-02 09:37:04,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641238735] [2024-02-02 09:37:04,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:37:04,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-02 09:37:04,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:37:05,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-02 09:37:05,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-02 09:37:05,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 115 [2024-02-02 09:37:05,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 111 transitions, 231 flow. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:37:05,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:37:05,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 115 [2024-02-02 09:37:05,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:37:05,585 INFO L124 PetriNetUnfolderBase]: 1189/2853 cut-off events. [2024-02-02 09:37:05,585 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2024-02-02 09:37:05,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4776 conditions, 2853 events. 1189/2853 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 21503 event pairs, 900 based on Foata normal form. 74/2567 useless extension candidates. Maximal degree in co-relation 4540. Up to 1861 conditions per place. [2024-02-02 09:37:05,605 INFO L140 encePairwiseOnDemand]: 108/115 looper letters, 47 selfloop transitions, 2 changer transitions 0/106 dead transitions. [2024-02-02 09:37:05,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 106 transitions, 319 flow [2024-02-02 09:37:05,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-02 09:37:05,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-02 09:37:05,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 231 transitions. [2024-02-02 09:37:05,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6695652173913044 [2024-02-02 09:37:05,621 INFO L175 Difference]: Start difference. First operand has 110 places, 111 transitions, 231 flow. Second operand 3 states and 231 transitions. [2024-02-02 09:37:05,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 106 transitions, 319 flow [2024-02-02 09:37:05,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 106 transitions, 314 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-02 09:37:05,633 INFO L231 Difference]: Finished difference. Result has 106 places, 106 transitions, 220 flow [2024-02-02 09:37:05,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=106, PETRI_TRANSITIONS=106} [2024-02-02 09:37:05,637 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, -4 predicate places. [2024-02-02 09:37:05,637 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 106 transitions, 220 flow [2024-02-02 09:37:05,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:37:05,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:37:05,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-02-02 09:37:05,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-02 09:37:05,639 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 68 more)] === [2024-02-02 09:37:05,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:37:05,640 INFO L85 PathProgramCache]: Analyzing trace with hash 13614435, now seen corresponding path program 1 times [2024-02-02 09:37:05,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:37:05,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404015418] [2024-02-02 09:37:05,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:37:05,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:37:05,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:37:05,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:37:05,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:37:05,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404015418] [2024-02-02 09:37:05,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404015418] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:37:05,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:37:05,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:37:05,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420384005] [2024-02-02 09:37:05,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:37:05,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:37:05,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:37:05,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:37:05,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:37:05,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 115 [2024-02-02 09:37:05,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 106 transitions, 220 flow. Second operand has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:37:05,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:37:05,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 115 [2024-02-02 09:37:05,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:37:06,161 INFO L124 PetriNetUnfolderBase]: 1189/2851 cut-off events. [2024-02-02 09:37:06,161 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-02-02 09:37:06,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4756 conditions, 2851 events. 1189/2851 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 21541 event pairs, 900 based on Foata normal form. 0/2491 useless extension candidates. Maximal degree in co-relation 4739. Up to 1861 conditions per place. [2024-02-02 09:37:06,177 INFO L140 encePairwiseOnDemand]: 109/115 looper letters, 45 selfloop transitions, 4 changer transitions 0/104 dead transitions. [2024-02-02 09:37:06,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 104 transitions, 314 flow [2024-02-02 09:37:06,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:37:06,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:37:06,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 279 transitions. [2024-02-02 09:37:06,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6065217391304348 [2024-02-02 09:37:06,181 INFO L175 Difference]: Start difference. First operand has 106 places, 106 transitions, 220 flow. Second operand 4 states and 279 transitions. [2024-02-02 09:37:06,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 104 transitions, 314 flow [2024-02-02 09:37:06,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 104 transitions, 310 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:37:06,183 INFO L231 Difference]: Finished difference. Result has 105 places, 104 transitions, 220 flow [2024-02-02 09:37:06,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=220, PETRI_PLACES=105, PETRI_TRANSITIONS=104} [2024-02-02 09:37:06,184 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, -5 predicate places. [2024-02-02 09:37:06,184 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 104 transitions, 220 flow [2024-02-02 09:37:06,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:37:06,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:37:06,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:37:06,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-02 09:37:06,185 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 68 more)] === [2024-02-02 09:37:06,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:37:06,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1861158038, now seen corresponding path program 1 times [2024-02-02 09:37:06,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:37:06,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897305189] [2024-02-02 09:37:06,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:37:06,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:37:06,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:37:06,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:37:06,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:37:06,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897305189] [2024-02-02 09:37:06,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897305189] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:37:06,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:37:06,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:37:06,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521059150] [2024-02-02 09:37:06,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:37:06,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:37:06,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:37:06,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:37:06,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:37:06,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 115 [2024-02-02 09:37:06,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 104 transitions, 220 flow. Second operand has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:37:06,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:37:06,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 115 [2024-02-02 09:37:06,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:37:06,876 INFO L124 PetriNetUnfolderBase]: 1774/4487 cut-off events. [2024-02-02 09:37:06,876 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-02-02 09:37:06,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7394 conditions, 4487 events. 1774/4487 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 34329 event pairs, 536 based on Foata normal form. 46/4011 useless extension candidates. Maximal degree in co-relation 7375. Up to 1438 conditions per place. [2024-02-02 09:37:06,894 INFO L140 encePairwiseOnDemand]: 102/115 looper letters, 95 selfloop transitions, 9 changer transitions 0/156 dead transitions. [2024-02-02 09:37:06,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 156 transitions, 538 flow [2024-02-02 09:37:06,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:37:06,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:37:06,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 347 transitions. [2024-02-02 09:37:06,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7543478260869565 [2024-02-02 09:37:06,896 INFO L175 Difference]: Start difference. First operand has 105 places, 104 transitions, 220 flow. Second operand 4 states and 347 transitions. [2024-02-02 09:37:06,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 156 transitions, 538 flow [2024-02-02 09:37:06,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 156 transitions, 530 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-02 09:37:06,900 INFO L231 Difference]: Finished difference. Result has 106 places, 107 transitions, 272 flow [2024-02-02 09:37:06,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=272, PETRI_PLACES=106, PETRI_TRANSITIONS=107} [2024-02-02 09:37:06,902 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, -4 predicate places. [2024-02-02 09:37:06,902 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 107 transitions, 272 flow [2024-02-02 09:37:06,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:37:06,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:37:06,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:37:06,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-02 09:37:06,906 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 68 more)] === [2024-02-02 09:37:06,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:37:06,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1593896119, now seen corresponding path program 1 times [2024-02-02 09:37:06,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:37:06,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278169241] [2024-02-02 09:37:06,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:37:06,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:37:06,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:37:06,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:37:07,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:37:07,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278169241] [2024-02-02 09:37:07,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278169241] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:37:07,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:37:07,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:37:07,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674143000] [2024-02-02 09:37:07,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:37:07,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:37:07,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:37:07,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:37:07,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:37:07,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 115 [2024-02-02 09:37:07,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 107 transitions, 272 flow. Second operand has 4 states, 4 states have (on average 68.75) internal successors, (275), 4 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:37:07,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:37:07,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 115 [2024-02-02 09:37:07,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:37:07,361 INFO L124 PetriNetUnfolderBase]: 1390/4004 cut-off events. [2024-02-02 09:37:07,361 INFO L125 PetriNetUnfolderBase]: For 258/266 co-relation queries the response was YES. [2024-02-02 09:37:07,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6787 conditions, 4004 events. 1390/4004 cut-off events. For 258/266 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 31611 event pairs, 545 based on Foata normal form. 74/3565 useless extension candidates. Maximal degree in co-relation 6397. Up to 2169 conditions per place. [2024-02-02 09:37:07,383 INFO L140 encePairwiseOnDemand]: 111/115 looper letters, 53 selfloop transitions, 2 changer transitions 0/114 dead transitions. [2024-02-02 09:37:07,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 114 transitions, 398 flow [2024-02-02 09:37:07,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:37:07,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:37:07,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 318 transitions. [2024-02-02 09:37:07,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.691304347826087 [2024-02-02 09:37:07,385 INFO L175 Difference]: Start difference. First operand has 106 places, 107 transitions, 272 flow. Second operand 4 states and 318 transitions. [2024-02-02 09:37:07,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 114 transitions, 398 flow [2024-02-02 09:37:07,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 114 transitions, 398 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-02 09:37:07,390 INFO L231 Difference]: Finished difference. Result has 107 places, 105 transitions, 272 flow [2024-02-02 09:37:07,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=272, PETRI_PLACES=107, PETRI_TRANSITIONS=105} [2024-02-02 09:37:07,392 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, -3 predicate places. [2024-02-02 09:37:07,392 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 105 transitions, 272 flow [2024-02-02 09:37:07,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.75) internal successors, (275), 4 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:37:07,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:37:07,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:37:07,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-02 09:37:07,393 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 68 more)] === [2024-02-02 09:37:07,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:37:07,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1569171308, now seen corresponding path program 1 times [2024-02-02 09:37:07,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:37:07,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245957254] [2024-02-02 09:37:07,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:37:07,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:37:07,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:37:07,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:37:07,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:37:07,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245957254] [2024-02-02 09:37:07,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245957254] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:37:07,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:37:07,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:37:07,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539793649] [2024-02-02 09:37:07,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:37:07,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:37:07,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:37:07,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:37:07,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:37:07,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 115 [2024-02-02 09:37:07,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 105 transitions, 272 flow. Second operand has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:37:07,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:37:07,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 115 [2024-02-02 09:37:07,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:37:07,926 INFO L124 PetriNetUnfolderBase]: 2147/5554 cut-off events. [2024-02-02 09:37:07,926 INFO L125 PetriNetUnfolderBase]: For 416/416 co-relation queries the response was YES. [2024-02-02 09:37:07,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9867 conditions, 5554 events. 2147/5554 cut-off events. For 416/416 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 44578 event pairs, 951 based on Foata normal form. 16/5017 useless extension candidates. Maximal degree in co-relation 8868. Up to 2682 conditions per place. [2024-02-02 09:37:07,945 INFO L140 encePairwiseOnDemand]: 110/115 looper letters, 90 selfloop transitions, 3 changer transitions 0/146 dead transitions. [2024-02-02 09:37:07,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 146 transitions, 562 flow [2024-02-02 09:37:07,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:37:07,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:37:07,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 332 transitions. [2024-02-02 09:37:07,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7217391304347827 [2024-02-02 09:37:07,947 INFO L175 Difference]: Start difference. First operand has 107 places, 105 transitions, 272 flow. Second operand 4 states and 332 transitions. [2024-02-02 09:37:07,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 146 transitions, 562 flow [2024-02-02 09:37:07,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 146 transitions, 559 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:37:07,951 INFO L231 Difference]: Finished difference. Result has 109 places, 106 transitions, 285 flow [2024-02-02 09:37:07,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=285, PETRI_PLACES=109, PETRI_TRANSITIONS=106} [2024-02-02 09:37:07,953 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, -1 predicate places. [2024-02-02 09:37:07,953 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 106 transitions, 285 flow [2024-02-02 09:37:07,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.0) internal successors, (252), 4 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:37:07,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:37:07,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:37:07,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-02 09:37:07,954 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 68 more)] === [2024-02-02 09:37:07,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:37:07,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1566636604, now seen corresponding path program 1 times [2024-02-02 09:37:07,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:37:07,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511749805] [2024-02-02 09:37:07,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:37:07,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:37:07,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:37:08,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:37:08,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:37:08,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511749805] [2024-02-02 09:37:08,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511749805] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:37:08,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:37:08,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:37:08,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054774687] [2024-02-02 09:37:08,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:37:08,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:37:08,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:37:08,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:37:08,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:37:08,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 115 [2024-02-02 09:37:08,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 106 transitions, 285 flow. Second operand has 4 states, 4 states have (on average 69.25) internal successors, (277), 4 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:37:08,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:37:08,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 115 [2024-02-02 09:37:08,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:37:08,533 INFO L124 PetriNetUnfolderBase]: 1627/4696 cut-off events. [2024-02-02 09:37:08,533 INFO L125 PetriNetUnfolderBase]: For 418/446 co-relation queries the response was YES. [2024-02-02 09:37:08,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8314 conditions, 4696 events. 1627/4696 cut-off events. For 418/446 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 38834 event pairs, 721 based on Foata normal form. 168/4360 useless extension candidates. Maximal degree in co-relation 8148. Up to 2434 conditions per place. [2024-02-02 09:37:08,550 INFO L140 encePairwiseOnDemand]: 111/115 looper letters, 82 selfloop transitions, 2 changer transitions 0/141 dead transitions. [2024-02-02 09:37:08,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 141 transitions, 572 flow [2024-02-02 09:37:08,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:37:08,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:37:08,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 340 transitions. [2024-02-02 09:37:08,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7391304347826086 [2024-02-02 09:37:08,551 INFO L175 Difference]: Start difference. First operand has 109 places, 106 transitions, 285 flow. Second operand 4 states and 340 transitions. [2024-02-02 09:37:08,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 141 transitions, 572 flow [2024-02-02 09:37:08,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 141 transitions, 562 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:37:08,554 INFO L231 Difference]: Finished difference. Result has 108 places, 104 transitions, 281 flow [2024-02-02 09:37:08,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=281, PETRI_PLACES=108, PETRI_TRANSITIONS=104} [2024-02-02 09:37:08,554 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, -2 predicate places. [2024-02-02 09:37:08,555 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 104 transitions, 281 flow [2024-02-02 09:37:08,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.25) internal successors, (277), 4 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:37:08,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:37:08,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:37:08,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-02 09:37:08,555 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 68 more)] === [2024-02-02 09:37:08,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:37:08,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1995725985, now seen corresponding path program 1 times [2024-02-02 09:37:08,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:37:08,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472536542] [2024-02-02 09:37:08,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:37:08,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:37:08,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:37:08,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:37:08,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:37:08,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472536542] [2024-02-02 09:37:08,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472536542] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:37:08,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:37:08,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-02 09:37:08,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158144708] [2024-02-02 09:37:08,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:37:08,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:37:08,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:37:08,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:37:08,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:37:08,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 115 [2024-02-02 09:37:08,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 104 transitions, 281 flow. Second operand has 4 states, 4 states have (on average 62.5) internal successors, (250), 4 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:37:08,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:37:08,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 115 [2024-02-02 09:37:08,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:37:09,354 INFO L124 PetriNetUnfolderBase]: 3669/9196 cut-off events. [2024-02-02 09:37:09,355 INFO L125 PetriNetUnfolderBase]: For 1303/1417 co-relation queries the response was YES. [2024-02-02 09:37:09,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17356 conditions, 9196 events. 3669/9196 cut-off events. For 1303/1417 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 81608 event pairs, 1895 based on Foata normal form. 84/8527 useless extension candidates. Maximal degree in co-relation 17065. Up to 3900 conditions per place. [2024-02-02 09:37:09,383 INFO L140 encePairwiseOnDemand]: 110/115 looper letters, 110 selfloop transitions, 3 changer transitions 0/162 dead transitions. [2024-02-02 09:37:09,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 162 transitions, 685 flow [2024-02-02 09:37:09,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:37:09,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:37:09,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 338 transitions. [2024-02-02 09:37:09,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7347826086956522 [2024-02-02 09:37:09,385 INFO L175 Difference]: Start difference. First operand has 108 places, 104 transitions, 281 flow. Second operand 4 states and 338 transitions. [2024-02-02 09:37:09,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 162 transitions, 685 flow [2024-02-02 09:37:09,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 162 transitions, 682 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:37:09,388 INFO L231 Difference]: Finished difference. Result has 110 places, 105 transitions, 294 flow [2024-02-02 09:37:09,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=294, PETRI_PLACES=110, PETRI_TRANSITIONS=105} [2024-02-02 09:37:09,389 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, 0 predicate places. [2024-02-02 09:37:09,389 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 105 transitions, 294 flow [2024-02-02 09:37:09,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.5) internal successors, (250), 4 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:37:09,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:37:09,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:37:09,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-02 09:37:09,390 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 68 more)] === [2024-02-02 09:37:09,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:37:09,390 INFO L85 PathProgramCache]: Analyzing trace with hash 758920239, now seen corresponding path program 1 times [2024-02-02 09:37:09,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:37:09,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588721585] [2024-02-02 09:37:09,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:37:09,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:37:09,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:37:09,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:37:09,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:37:09,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588721585] [2024-02-02 09:37:09,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588721585] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:37:09,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:37:09,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 09:37:09,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141802063] [2024-02-02 09:37:09,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:37:09,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-02 09:37:09,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:37:09,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-02 09:37:09,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-02 09:37:09,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 115 [2024-02-02 09:37:09,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 105 transitions, 294 flow. Second operand has 6 states, 6 states have (on average 49.333333333333336) internal successors, (296), 6 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:37:09,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:37:09,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 115 [2024-02-02 09:37:09,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:37:10,689 INFO L124 PetriNetUnfolderBase]: 5534/12494 cut-off events. [2024-02-02 09:37:10,689 INFO L125 PetriNetUnfolderBase]: For 2958/3123 co-relation queries the response was YES. [2024-02-02 09:37:10,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25658 conditions, 12494 events. 5534/12494 cut-off events. For 2958/3123 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 108398 event pairs, 1432 based on Foata normal form. 105/11849 useless extension candidates. Maximal degree in co-relation 25127. Up to 4294 conditions per place. [2024-02-02 09:37:10,747 INFO L140 encePairwiseOnDemand]: 103/115 looper letters, 150 selfloop transitions, 17 changer transitions 0/205 dead transitions. [2024-02-02 09:37:10,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 205 transitions, 935 flow [2024-02-02 09:37:10,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:37:10,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:37:10,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 437 transitions. [2024-02-02 09:37:10,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2024-02-02 09:37:10,749 INFO L175 Difference]: Start difference. First operand has 110 places, 105 transitions, 294 flow. Second operand 6 states and 437 transitions. [2024-02-02 09:37:10,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 205 transitions, 935 flow [2024-02-02 09:37:10,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 205 transitions, 919 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:37:10,754 INFO L231 Difference]: Finished difference. Result has 116 places, 116 transitions, 419 flow [2024-02-02 09:37:10,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=419, PETRI_PLACES=116, PETRI_TRANSITIONS=116} [2024-02-02 09:37:10,755 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, 6 predicate places. [2024-02-02 09:37:10,755 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 116 transitions, 419 flow [2024-02-02 09:37:10,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.333333333333336) internal successors, (296), 6 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:37:10,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:37:10,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:37:10,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-02-02 09:37:10,756 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 68 more)] === [2024-02-02 09:37:10,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:37:10,756 INFO L85 PathProgramCache]: Analyzing trace with hash 560038346, now seen corresponding path program 1 times [2024-02-02 09:37:10,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:37:10,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236854195] [2024-02-02 09:37:10,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:37:10,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:37:10,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:37:10,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:37:10,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:37:10,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236854195] [2024-02-02 09:37:10,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236854195] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:37:10,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:37:10,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 09:37:10,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460403477] [2024-02-02 09:37:10,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:37:10,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-02 09:37:10,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:37:10,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-02 09:37:10,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-02 09:37:10,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 115 [2024-02-02 09:37:10,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 116 transitions, 419 flow. Second operand has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:37:10,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:37:10,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 115 [2024-02-02 09:37:10,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:37:12,002 INFO L124 PetriNetUnfolderBase]: 6344/13787 cut-off events. [2024-02-02 09:37:12,002 INFO L125 PetriNetUnfolderBase]: For 5695/5873 co-relation queries the response was YES. [2024-02-02 09:37:12,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30072 conditions, 13787 events. 6344/13787 cut-off events. For 5695/5873 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 116694 event pairs, 2164 based on Foata normal form. 64/13119 useless extension candidates. Maximal degree in co-relation 29677. Up to 4337 conditions per place. [2024-02-02 09:37:12,140 INFO L140 encePairwiseOnDemand]: 103/115 looper letters, 152 selfloop transitions, 20 changer transitions 0/210 dead transitions. [2024-02-02 09:37:12,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 210 transitions, 1032 flow [2024-02-02 09:37:12,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:37:12,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:37:12,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 442 transitions. [2024-02-02 09:37:12,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6405797101449275 [2024-02-02 09:37:12,142 INFO L175 Difference]: Start difference. First operand has 116 places, 116 transitions, 419 flow. Second operand 6 states and 442 transitions. [2024-02-02 09:37:12,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 210 transitions, 1032 flow [2024-02-02 09:37:12,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 210 transitions, 1028 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-02 09:37:12,148 INFO L231 Difference]: Finished difference. Result has 123 places, 121 transitions, 519 flow [2024-02-02 09:37:12,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=519, PETRI_PLACES=123, PETRI_TRANSITIONS=121} [2024-02-02 09:37:12,149 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, 13 predicate places. [2024-02-02 09:37:12,149 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 121 transitions, 519 flow [2024-02-02 09:37:12,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:37:12,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:37:12,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:37:12,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-02-02 09:37:12,150 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 68 more)] === [2024-02-02 09:37:12,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:37:12,150 INFO L85 PathProgramCache]: Analyzing trace with hash 285531218, now seen corresponding path program 1 times [2024-02-02 09:37:12,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:37:12,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009164458] [2024-02-02 09:37:12,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:37:12,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:37:12,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:37:12,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:37:12,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:37:12,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009164458] [2024-02-02 09:37:12,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009164458] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:37:12,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:37:12,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 09:37:12,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271760352] [2024-02-02 09:37:12,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:37:12,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-02 09:37:12,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:37:12,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-02 09:37:12,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-02-02 09:37:12,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 115 [2024-02-02 09:37:12,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 121 transitions, 519 flow. Second operand has 6 states, 6 states have (on average 53.166666666666664) internal successors, (319), 6 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:37:12,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:37:12,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 115 [2024-02-02 09:37:12,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:37:13,522 INFO L124 PetriNetUnfolderBase]: 5449/11795 cut-off events. [2024-02-02 09:37:13,522 INFO L125 PetriNetUnfolderBase]: For 10145/10361 co-relation queries the response was YES. [2024-02-02 09:37:13,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27986 conditions, 11795 events. 5449/11795 cut-off events. For 10145/10361 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 98231 event pairs, 1100 based on Foata normal form. 46/10599 useless extension candidates. Maximal degree in co-relation 27460. Up to 2962 conditions per place. [2024-02-02 09:37:13,581 INFO L140 encePairwiseOnDemand]: 100/115 looper letters, 145 selfloop transitions, 20 changer transitions 0/206 dead transitions. [2024-02-02 09:37:13,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 206 transitions, 1113 flow [2024-02-02 09:37:13,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:37:13,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:37:13,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 459 transitions. [2024-02-02 09:37:13,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6652173913043479 [2024-02-02 09:37:13,583 INFO L175 Difference]: Start difference. First operand has 123 places, 121 transitions, 519 flow. Second operand 6 states and 459 transitions. [2024-02-02 09:37:13,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 206 transitions, 1113 flow [2024-02-02 09:37:13,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 206 transitions, 1094 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-02 09:37:13,595 INFO L231 Difference]: Finished difference. Result has 128 places, 123 transitions, 570 flow [2024-02-02 09:37:13,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=570, PETRI_PLACES=128, PETRI_TRANSITIONS=123} [2024-02-02 09:37:13,596 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, 18 predicate places. [2024-02-02 09:37:13,596 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 123 transitions, 570 flow [2024-02-02 09:37:13,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 53.166666666666664) internal successors, (319), 6 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:37:13,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:37:13,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:37:13,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-02-02 09:37:13,597 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err12ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 68 more)] === [2024-02-02 09:37:13,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:37:13,598 INFO L85 PathProgramCache]: Analyzing trace with hash 116120702, now seen corresponding path program 1 times [2024-02-02 09:37:13,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:37:13,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29039535] [2024-02-02 09:37:13,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:37:13,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:37:13,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:37:13,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:37:13,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:37:13,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29039535] [2024-02-02 09:37:13,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29039535] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:37:13,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:37:13,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-02 09:37:13,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033643447] [2024-02-02 09:37:13,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:37:13,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-02 09:37:13,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:37:13,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-02 09:37:13,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-02 09:37:13,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 115 [2024-02-02 09:37:13,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 123 transitions, 570 flow. Second operand has 6 states, 6 states have (on average 49.5) internal successors, (297), 6 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:37:13,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:37:13,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 115 [2024-02-02 09:37:13,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:37:15,176 INFO L124 PetriNetUnfolderBase]: 5881/12993 cut-off events. [2024-02-02 09:37:15,176 INFO L125 PetriNetUnfolderBase]: For 9863/10035 co-relation queries the response was YES. [2024-02-02 09:37:15,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31293 conditions, 12993 events. 5881/12993 cut-off events. For 9863/10035 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 111955 event pairs, 1732 based on Foata normal form. 54/12619 useless extension candidates. Maximal degree in co-relation 30692. Up to 4679 conditions per place. [2024-02-02 09:37:15,332 INFO L140 encePairwiseOnDemand]: 105/115 looper letters, 150 selfloop transitions, 16 changer transitions 0/205 dead transitions. [2024-02-02 09:37:15,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 205 transitions, 1180 flow [2024-02-02 09:37:15,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-02 09:37:15,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-02 09:37:15,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 422 transitions. [2024-02-02 09:37:15,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6115942028985507 [2024-02-02 09:37:15,335 INFO L175 Difference]: Start difference. First operand has 128 places, 123 transitions, 570 flow. Second operand 6 states and 422 transitions. [2024-02-02 09:37:15,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 205 transitions, 1180 flow [2024-02-02 09:37:15,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 205 transitions, 1142 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-02-02 09:37:15,348 INFO L231 Difference]: Finished difference. Result has 131 places, 124 transitions, 580 flow [2024-02-02 09:37:15,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=536, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=580, PETRI_PLACES=131, PETRI_TRANSITIONS=124} [2024-02-02 09:37:15,349 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, 21 predicate places. [2024-02-02 09:37:15,349 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 124 transitions, 580 flow [2024-02-02 09:37:15,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.5) internal successors, (297), 6 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:37:15,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:37:15,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:37:15,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-02-02 09:37:15,350 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 68 more)] === [2024-02-02 09:37:15,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:37:15,350 INFO L85 PathProgramCache]: Analyzing trace with hash -725732929, now seen corresponding path program 1 times [2024-02-02 09:37:15,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:37:15,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82111132] [2024-02-02 09:37:15,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:37:15,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:37:15,364 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-02-02 09:37:15,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1743044798] [2024-02-02 09:37:15,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:37:15,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-02 09:37:15,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-02 09:37:15,366 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-02 09:37:15,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-02-02 09:37:15,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:37:15,463 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 4 conjunts are in the unsatisfiable core [2024-02-02 09:37:15,466 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-02 09:37:15,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:37:15,601 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-02 09:37:15,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:37:15,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82111132] [2024-02-02 09:37:15,601 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-02-02 09:37:15,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743044798] [2024-02-02 09:37:15,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1743044798] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:37:15,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:37:15,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-02 09:37:15,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801334041] [2024-02-02 09:37:15,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:37:15,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-02 09:37:15,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:37:15,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-02 09:37:15,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-02 09:37:15,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 115 [2024-02-02 09:37:15,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 124 transitions, 580 flow. Second operand has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:37:15,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:37:15,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 115 [2024-02-02 09:37:15,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:37:19,755 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-02-02 09:37:24,798 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-02-02 09:37:25,836 INFO L124 PetriNetUnfolderBase]: 5481/14301 cut-off events. [2024-02-02 09:37:25,836 INFO L125 PetriNetUnfolderBase]: For 9692/9906 co-relation queries the response was YES. [2024-02-02 09:37:25,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32985 conditions, 14301 events. 5481/14301 cut-off events. For 9692/9906 co-relation queries the response was YES. Maximal size of possible extension queue 525. Compared 143097 event pairs, 2157 based on Foata normal form. 34/13768 useless extension candidates. Maximal degree in co-relation 32701. Up to 4720 conditions per place. [2024-02-02 09:37:25,910 INFO L140 encePairwiseOnDemand]: 112/115 looper letters, 136 selfloop transitions, 2 changer transitions 0/196 dead transitions. [2024-02-02 09:37:25,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 196 transitions, 1255 flow [2024-02-02 09:37:25,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-02 09:37:25,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-02 09:37:25,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 357 transitions. [2024-02-02 09:37:25,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7760869565217391 [2024-02-02 09:37:25,912 INFO L175 Difference]: Start difference. First operand has 131 places, 124 transitions, 580 flow. Second operand 4 states and 357 transitions. [2024-02-02 09:37:25,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 196 transitions, 1255 flow [2024-02-02 09:37:25,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 196 transitions, 1227 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-02 09:37:25,927 INFO L231 Difference]: Finished difference. Result has 131 places, 124 transitions, 574 flow [2024-02-02 09:37:25,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=559, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=574, PETRI_PLACES=131, PETRI_TRANSITIONS=124} [2024-02-02 09:37:25,927 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, 21 predicate places. [2024-02-02 09:37:25,928 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 124 transitions, 574 flow [2024-02-02 09:37:25,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.0) internal successors, (276), 4 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:37:25,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:37:25,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:37:25,942 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-02-02 09:37:26,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-02-02 09:37:26,140 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err13ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 68 more)] === [2024-02-02 09:37:26,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:37:26,140 INFO L85 PathProgramCache]: Analyzing trace with hash -695224988, now seen corresponding path program 1 times [2024-02-02 09:37:26,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:37:26,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884065938] [2024-02-02 09:37:26,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:37:26,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:37:26,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:37:26,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:37:26,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:37:26,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884065938] [2024-02-02 09:37:26,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884065938] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-02 09:37:26,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-02 09:37:26,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-02 09:37:26,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040340119] [2024-02-02 09:37:26,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-02 09:37:26,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-02 09:37:26,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:37:26,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-02 09:37:26,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-02-02 09:37:26,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 115 [2024-02-02 09:37:26,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 124 transitions, 574 flow. Second operand has 5 states, 5 states have (on average 52.4) internal successors, (262), 5 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:37:26,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:37:26,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 115 [2024-02-02 09:37:26,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:37:28,276 INFO L124 PetriNetUnfolderBase]: 10651/22143 cut-off events. [2024-02-02 09:37:28,276 INFO L125 PetriNetUnfolderBase]: For 15171/15489 co-relation queries the response was YES. [2024-02-02 09:37:28,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55637 conditions, 22143 events. 10651/22143 cut-off events. For 15171/15489 co-relation queries the response was YES. Maximal size of possible extension queue 745. Compared 203878 event pairs, 5830 based on Foata normal form. 208/21489 useless extension candidates. Maximal degree in co-relation 53890. Up to 15045 conditions per place. [2024-02-02 09:37:28,368 INFO L140 encePairwiseOnDemand]: 103/115 looper letters, 142 selfloop transitions, 6 changer transitions 0/185 dead transitions. [2024-02-02 09:37:28,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 185 transitions, 1087 flow [2024-02-02 09:37:28,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-02 09:37:28,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-02 09:37:28,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 369 transitions. [2024-02-02 09:37:28,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6417391304347826 [2024-02-02 09:37:28,370 INFO L175 Difference]: Start difference. First operand has 131 places, 124 transitions, 574 flow. Second operand 5 states and 369 transitions. [2024-02-02 09:37:28,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 185 transitions, 1087 flow [2024-02-02 09:37:28,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 185 transitions, 1087 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-02 09:37:28,393 INFO L231 Difference]: Finished difference. Result has 136 places, 126 transitions, 618 flow [2024-02-02 09:37:28,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=574, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=618, PETRI_PLACES=136, PETRI_TRANSITIONS=126} [2024-02-02 09:37:28,394 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, 26 predicate places. [2024-02-02 09:37:28,395 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 126 transitions, 618 flow [2024-02-02 09:37:28,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 52.4) internal successors, (262), 5 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:37:28,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:37:28,395 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:37:28,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-02-02 09:37:28,395 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 68 more)] === [2024-02-02 09:37:28,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:37:28,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1012438482, now seen corresponding path program 1 times [2024-02-02 09:37:28,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:37:28,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401261752] [2024-02-02 09:37:28,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:37:28,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:37:28,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:37:28,542 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:37:28,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:37:28,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401261752] [2024-02-02 09:37:28,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401261752] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-02 09:37:28,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635881469] [2024-02-02 09:37:28,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:37:28,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-02 09:37:28,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-02 09:37:28,544 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-02 09:37:28,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-02-02 09:37:28,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:37:28,640 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 6 conjunts are in the unsatisfiable core [2024-02-02 09:37:28,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-02 09:37:28,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:37:28,706 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-02 09:37:29,095 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:37:29,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1635881469] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-02 09:37:29,095 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-02 09:37:29,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2024-02-02 09:37:29,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126135478] [2024-02-02 09:37:29,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-02 09:37:29,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 09:37:29,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:37:29,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 09:37:29,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-02-02 09:37:29,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 115 [2024-02-02 09:37:29,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 126 transitions, 618 flow. Second operand has 10 states, 10 states have (on average 61.9) internal successors, (619), 10 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:37:29,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:37:29,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 115 [2024-02-02 09:37:29,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:37:33,174 INFO L124 PetriNetUnfolderBase]: 15825/34300 cut-off events. [2024-02-02 09:37:33,174 INFO L125 PetriNetUnfolderBase]: For 28977/29537 co-relation queries the response was YES. [2024-02-02 09:37:33,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86067 conditions, 34300 events. 15825/34300 cut-off events. For 28977/29537 co-relation queries the response was YES. Maximal size of possible extension queue 638. Compared 333232 event pairs, 1950 based on Foata normal form. 1448/34820 useless extension candidates. Maximal degree in co-relation 85312. Up to 6294 conditions per place. [2024-02-02 09:37:33,355 INFO L140 encePairwiseOnDemand]: 109/115 looper letters, 303 selfloop transitions, 10 changer transitions 0/362 dead transitions. [2024-02-02 09:37:33,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 362 transitions, 2529 flow [2024-02-02 09:37:33,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-02 09:37:33,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-02 09:37:33,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 677 transitions. [2024-02-02 09:37:33,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7358695652173913 [2024-02-02 09:37:33,363 INFO L175 Difference]: Start difference. First operand has 136 places, 126 transitions, 618 flow. Second operand 8 states and 677 transitions. [2024-02-02 09:37:33,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 362 transitions, 2529 flow [2024-02-02 09:37:33,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 362 transitions, 2481 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-02-02 09:37:33,424 INFO L231 Difference]: Finished difference. Result has 143 places, 128 transitions, 652 flow [2024-02-02 09:37:33,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=604, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=652, PETRI_PLACES=143, PETRI_TRANSITIONS=128} [2024-02-02 09:37:33,425 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, 33 predicate places. [2024-02-02 09:37:33,425 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 128 transitions, 652 flow [2024-02-02 09:37:33,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 61.9) internal successors, (619), 10 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:37:33,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:37:33,425 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:37:33,437 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-02-02 09:37:33,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-02-02 09:37:33,626 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 68 more)] === [2024-02-02 09:37:33,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:37:33,626 INFO L85 PathProgramCache]: Analyzing trace with hash 2001081499, now seen corresponding path program 1 times [2024-02-02 09:37:33,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:37:33,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824846724] [2024-02-02 09:37:33,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:37:33,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:37:33,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:37:33,880 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:37:33,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:37:33,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824846724] [2024-02-02 09:37:33,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824846724] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-02 09:37:33,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985136378] [2024-02-02 09:37:33,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:37:33,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-02 09:37:33,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-02 09:37:33,883 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-02 09:37:33,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-02-02 09:37:33,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:37:33,980 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 10 conjunts are in the unsatisfiable core [2024-02-02 09:37:33,983 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-02 09:37:34,182 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:37:34,182 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-02 09:37:35,117 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:37:35,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985136378] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-02 09:37:35,117 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-02 09:37:35,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 14 [2024-02-02 09:37:35,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666078616] [2024-02-02 09:37:35,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-02 09:37:35,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-02-02 09:37:35,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:37:35,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-02-02 09:37:35,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2024-02-02 09:37:35,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 115 [2024-02-02 09:37:35,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 128 transitions, 652 flow. Second operand has 15 states, 15 states have (on average 47.46666666666667) internal successors, (712), 15 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:37:35,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:37:35,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 115 [2024-02-02 09:37:35,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-02 09:37:44,889 INFO L124 PetriNetUnfolderBase]: 41229/82603 cut-off events. [2024-02-02 09:37:44,889 INFO L125 PetriNetUnfolderBase]: For 68524/69334 co-relation queries the response was YES. [2024-02-02 09:37:45,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215841 conditions, 82603 events. 41229/82603 cut-off events. For 68524/69334 co-relation queries the response was YES. Maximal size of possible extension queue 1429. Compared 825860 event pairs, 4627 based on Foata normal form. 2866/84455 useless extension candidates. Maximal degree in co-relation 215098. Up to 13120 conditions per place. [2024-02-02 09:37:45,495 INFO L140 encePairwiseOnDemand]: 88/115 looper letters, 466 selfloop transitions, 115 changer transitions 0/615 dead transitions. [2024-02-02 09:37:45,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 615 transitions, 3849 flow [2024-02-02 09:37:45,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-02-02 09:37:45,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-02-02 09:37:45,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1508 transitions. [2024-02-02 09:37:45,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5701323251417769 [2024-02-02 09:37:45,501 INFO L175 Difference]: Start difference. First operand has 143 places, 128 transitions, 652 flow. Second operand 23 states and 1508 transitions. [2024-02-02 09:37:45,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 615 transitions, 3849 flow [2024-02-02 09:37:45,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 615 transitions, 3793 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-02-02 09:37:45,899 INFO L231 Difference]: Finished difference. Result has 179 places, 222 transitions, 1881 flow [2024-02-02 09:37:45,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=636, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1881, PETRI_PLACES=179, PETRI_TRANSITIONS=222} [2024-02-02 09:37:45,900 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, 69 predicate places. [2024-02-02 09:37:45,900 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 222 transitions, 1881 flow [2024-02-02 09:37:45,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 47.46666666666667) internal successors, (712), 15 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:37:45,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-02 09:37:45,901 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-02 09:37:45,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-02-02 09:37:46,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-02 09:37:46,101 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 68 more)] === [2024-02-02 09:37:46,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-02 09:37:46,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1847996758, now seen corresponding path program 1 times [2024-02-02 09:37:46,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-02 09:37:46,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896766356] [2024-02-02 09:37:46,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:37:46,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-02 09:37:46,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:37:46,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:37:46,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-02 09:37:46,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896766356] [2024-02-02 09:37:46,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896766356] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-02 09:37:46,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181003543] [2024-02-02 09:37:46,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-02 09:37:46,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-02 09:37:46,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-02 09:37:46,230 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-02 09:37:46,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-02-02 09:37:46,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-02 09:37:46,320 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 6 conjunts are in the unsatisfiable core [2024-02-02 09:37:46,322 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-02 09:37:46,399 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:37:46,399 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-02 09:37:46,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-02 09:37:46,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181003543] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-02 09:37:46,740 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-02 09:37:46,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2024-02-02 09:37:46,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278580494] [2024-02-02 09:37:46,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-02 09:37:46,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-02 09:37:46,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-02 09:37:46,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-02 09:37:46,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-02-02 09:37:46,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 115 [2024-02-02 09:37:46,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 222 transitions, 1881 flow. Second operand has 10 states, 10 states have (on average 63.7) internal successors, (637), 10 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-02 09:37:46,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-02 09:37:46,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 115 [2024-02-02 09:37:46,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand