./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 3d25acf6 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-3d25acf-m [2024-01-30 14:41:05,903 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-30 14:41:05,978 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-30 14:41:05,985 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-30 14:41:05,986 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-30 14:41:06,014 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-30 14:41:06,015 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-30 14:41:06,015 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-30 14:41:06,016 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-30 14:41:06,021 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-30 14:41:06,022 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-30 14:41:06,022 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-30 14:41:06,023 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-30 14:41:06,025 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-30 14:41:06,025 INFO L153 SettingsManager]: * Use SBE=true [2024-01-30 14:41:06,025 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-30 14:41:06,025 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-30 14:41:06,026 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-30 14:41:06,026 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-30 14:41:06,026 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-30 14:41:06,026 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-30 14:41:06,027 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-30 14:41:06,027 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-30 14:41:06,027 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-30 14:41:06,028 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-30 14:41:06,028 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-30 14:41:06,028 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-30 14:41:06,028 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-30 14:41:06,029 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-30 14:41:06,029 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-30 14:41:06,030 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-30 14:41:06,030 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-30 14:41:06,030 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-30 14:41:06,031 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-30 14:41:06,031 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-30 14:41:06,031 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-30 14:41:06,031 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-30 14:41:06,032 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-30 14:41:06,032 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-30 14:41:06,032 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-30 14:41:06,032 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-30 14:41:06,033 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-30 14:41:06,033 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-30 14:41:06,033 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-30 14:41:06,307 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-30 14:41:06,336 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-30 14:41:06,338 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-30 14:41:06,339 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-30 14:41:06,340 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-30 14:41:06,341 INFO L431 ainManager$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 [2024-01-30 14:41:06,494 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-30 14:41:06,495 INFO L274 PluginConnector]: CDTParser initialized [2024-01-30 14:41:06,496 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-deagle/circular_buffer_bad.i [2024-01-30 14:41:07,648 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-30 14:41:07,896 INFO L384 CDTParser]: Found 1 translation units. [2024-01-30 14:41:07,897 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/circular_buffer_bad.i [2024-01-30 14:41:07,910 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2dd41654e/1ffead7e993743b9a6e9e42ef59a6d9a/FLAG67a062803 [2024-01-30 14:41:07,921 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2dd41654e/1ffead7e993743b9a6e9e42ef59a6d9a [2024-01-30 14:41:07,924 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-30 14:41:07,927 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-30 14:41:07,927 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-30 14:41:07,928 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-30 14:41:07,932 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-30 14:41:07,933 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 30.01 02:41:06" (1/2) ... [2024-01-30 14:41:07,933 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25a8959b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:41:07, skipping insertion in model container [2024-01-30 14:41:07,934 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 30.01 02:41:06" (1/2) ... [2024-01-30 14:41:07,935 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3d1bd59d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:41:07, skipping insertion in model container [2024-01-30 14:41:07,935 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 02:41:07" (2/2) ... [2024-01-30 14:41:07,935 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25a8959b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:41:07, skipping insertion in model container [2024-01-30 14:41:07,936 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 02:41:07" (2/2) ... [2024-01-30 14:41:07,936 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-30 14:41:08,051 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-30 14:41:08,053 INFO L98 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) [2024-01-30 14:41:08,053 INFO L98 nessWitnessExtractor]: Location invariant before [L698-L698] (receive == (_Bool)1) && (send == (_Bool)0 || send == (_Bool)1) [2024-01-30 14:41:08,053 INFO L98 nessWitnessExtractor]: Location invariant after [L688-L692] (((10 == max) && (send == (_Bool)0)) && (receive == (_Bool)0)) && (max == 10) [2024-01-30 14:41:08,053 INFO L98 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) [2024-01-30 14:41:08,053 INFO L98 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) [2024-01-30 14:41:08,053 INFO L98 nessWitnessExtractor]: Loop invariant at [L740-L751] (unsigned long )arg == 0UL [2024-01-30 14:41:08,054 INFO L98 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) [2024-01-30 14:41:08,054 INFO L98 nessWitnessExtractor]: Location invariant before [L759-L759] (send == (_Bool)0) && (receive == (_Bool)0) [2024-01-30 14:41:08,054 INFO L98 nessWitnessExtractor]: Location invariant before [L702-L702] (receive == (_Bool)1) && (send == (_Bool)0 || send == (_Bool)1) [2024-01-30 14:41:08,054 INFO L98 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) [2024-01-30 14:41:08,054 INFO L98 nessWitnessExtractor]: Location invariant before [L760-L760] (send == (_Bool)1) && (receive == (_Bool)0) [2024-01-30 14:41:08,054 INFO L98 nessWitnessExtractor]: Location invariant before [L697-L697] (receive == (_Bool)1) && (send == (_Bool)0 || send == (_Bool)1) [2024-01-30 14:41:08,055 INFO L98 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) [2024-01-30 14:41:08,055 INFO L98 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) [2024-01-30 14:41:08,055 INFO L98 nessWitnessExtractor]: Location invariant before [L758-L758] (send == (_Bool)0) && (receive == (_Bool)0) [2024-01-30 14:41:08,055 INFO L98 nessWitnessExtractor]: Loop invariant at [L724-L734] (unsigned long )arg == 0UL [2024-01-30 14:41:08,055 INFO L98 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)) [2024-01-30 14:41:08,055 INFO L98 nessWitnessExtractor]: Location invariant before [L691-L691] (((10 == max) && (send == (_Bool)0)) && (receive == (_Bool)0)) && (max == 10) [2024-01-30 14:41:08,056 INFO L98 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) [2024-01-30 14:41:08,056 INFO L98 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) [2024-01-30 14:41:08,056 INFO L98 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)) [2024-01-30 14:41:08,057 INFO L98 nessWitnessExtractor]: Location invariant before [L695-L703] (receive == (_Bool)1) && (send == (_Bool)0 || send == (_Bool)1) [2024-01-30 14:41:08,057 INFO L98 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) [2024-01-30 14:41:08,057 INFO L98 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) [2024-01-30 14:41:08,057 INFO L98 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) [2024-01-30 14:41:08,057 INFO L98 nessWitnessExtractor]: Location invariant before [L757-L757] (send == (_Bool)0) && (receive == (_Bool)0) [2024-01-30 14:41:08,057 INFO L98 nessWitnessExtractor]: Location invariant before [L752-L752] (i == 7) && ((unsigned long )arg == 0UL) [2024-01-30 14:41:08,058 INFO L98 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) [2024-01-30 14:41:08,058 INFO L98 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) [2024-01-30 14:41:08,058 INFO L98 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) [2024-01-30 14:41:08,058 INFO L98 nessWitnessExtractor]: Location invariant before [L735-L735] (i == 7) && ((unsigned long )arg == 0UL) [2024-01-30 14:41:08,058 INFO L98 nessWitnessExtractor]: Location invariant before [L690-L690] (((10 == max) && (send == (_Bool)0)) && (receive == (_Bool)0)) && (max == 10) [2024-01-30 14:41:08,058 INFO L98 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) [2024-01-30 14:41:08,059 INFO L98 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) [2024-01-30 14:41:08,059 INFO L98 nessWitnessExtractor]: Location invariant before [L761-L761] (send == (_Bool)1) && (receive == (_Bool)0) [2024-01-30 14:41:08,105 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-30 14:41:08,459 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] [2024-01-30 14:41:08,476 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] [2024-01-30 14:41:08,483 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-30 14:41:08,501 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local [2024-01-30 14:41:08,568 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 [2024-01-30 14:41:08,584 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 [2024-01-30 14:41:08,611 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 [2024-01-30 14:41:08,631 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-30 14:41:08,665 INFO L206 MainTranslator]: Completed translation [2024-01-30 14:41:08,665 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:41:08 WrapperNode [2024-01-30 14:41:08,666 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-30 14:41:08,667 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-30 14:41:08,667 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-30 14:41:08,667 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-30 14:41:08,673 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:41:08" (1/1) ... [2024-01-30 14:41:08,690 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:41:08" (1/1) ... [2024-01-30 14:41:08,726 INFO L138 Inliner]: procedures = 169, calls = 38, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 177 [2024-01-30 14:41:08,727 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-30 14:41:08,728 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-30 14:41:08,728 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-30 14:41:08,728 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-30 14:41:08,739 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:41:08" (1/1) ... [2024-01-30 14:41:08,740 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:41:08" (1/1) ... [2024-01-30 14:41:08,747 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:41:08" (1/1) ... [2024-01-30 14:41:08,775 INFO L175 MemorySlicer]: Split 18 memory accesses to 6 slices as follows [2, 1, 2, 3, 2, 8]. 44 percent of accesses are in the largest equivalence class. The 11 initializations are split as follows [2, 1, 0, 0, 0, 8]. The 4 writes are split as follows [0, 0, 1, 2, 1, 0]. [2024-01-30 14:41:08,778 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:41:08" (1/1) ... [2024-01-30 14:41:08,778 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:41:08" (1/1) ... [2024-01-30 14:41:08,799 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:41:08" (1/1) ... [2024-01-30 14:41:08,802 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:41:08" (1/1) ... [2024-01-30 14:41:08,819 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:41:08" (1/1) ... [2024-01-30 14:41:08,821 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:41:08" (1/1) ... [2024-01-30 14:41:08,855 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-30 14:41:08,855 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-30 14:41:08,856 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-30 14:41:08,856 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-30 14:41:08,856 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:41:08" (1/1) ... [2024-01-30 14:41:08,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-30 14:41:08,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-30 14:41:08,920 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) [2024-01-30 14:41:08,951 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 [2024-01-30 14:41:08,975 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-30 14:41:08,976 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-30 14:41:08,976 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-30 14:41:08,976 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-30 14:41:08,976 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-30 14:41:08,976 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-01-30 14:41:08,976 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-01-30 14:41:08,976 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-01-30 14:41:08,977 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-01-30 14:41:08,977 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-01-30 14:41:08,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-30 14:41:08,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-30 14:41:08,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-30 14:41:08,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-30 14:41:08,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-30 14:41:08,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-01-30 14:41:08,978 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-01-30 14:41:08,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-30 14:41:08,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-30 14:41:08,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-30 14:41:08,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-01-30 14:41:08,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-01-30 14:41:08,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-01-30 14:41:08,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-01-30 14:41:08,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-01-30 14:41:08,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-01-30 14:41:08,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-30 14:41:08,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-30 14:41:08,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-30 14:41:08,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-30 14:41:08,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-30 14:41:08,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-01-30 14:41:08,981 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-01-30 14:41:08,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-30 14:41:08,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-30 14:41:08,983 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-30 14:41:09,167 INFO L244 CfgBuilder]: Building ICFG [2024-01-30 14:41:09,169 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-30 14:41:09,614 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-30 14:41:09,615 INFO L293 CfgBuilder]: Performing block encoding [2024-01-30 14:41:09,761 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-30 14:41:09,762 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-01-30 14:41:09,763 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 02:41:09 BoogieIcfgContainer [2024-01-30 14:41:09,764 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-30 14:41:09,786 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-30 14:41:09,788 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-30 14:41:09,791 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-30 14:41:09,791 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 30.01 02:41:06" (1/4) ... [2024-01-30 14:41:09,792 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8bb7b0c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 30.01 02:41:09, skipping insertion in model container [2024-01-30 14:41:09,792 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.01 02:41:07" (2/4) ... [2024-01-30 14:41:09,793 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8bb7b0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 02:41:09, skipping insertion in model container [2024-01-30 14:41:09,793 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:41:08" (3/4) ... [2024-01-30 14:41:09,794 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8bb7b0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 02:41:09, skipping insertion in model container [2024-01-30 14:41:09,794 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 02:41:09" (4/4) ... [2024-01-30 14:41:09,796 INFO L112 eAbstractionObserver]: Analyzing ICFG circular_buffer_bad.i [2024-01-30 14:41:09,812 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-30 14:41:09,812 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2024-01-30 14:41:09,812 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-30 14:41:09,951 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-01-30 14:41:09,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 115 transitions, 244 flow [2024-01-30 14:41:10,048 INFO L124 PetriNetUnfolderBase]: 8/113 cut-off events. [2024-01-30 14:41:10,049 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-30 14:41:10,053 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. [2024-01-30 14:41:10,053 INFO L82 GeneralOperation]: Start removeDead. Operand has 114 places, 115 transitions, 244 flow [2024-01-30 14:41:10,058 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 110 places, 111 transitions, 231 flow [2024-01-30 14:41:10,073 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-30 14:41:10,085 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;@7cbd9765, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-30 14:41:10,085 INFO L358 AbstractCegarLoop]: Starting to check reachability of 71 error locations. [2024-01-30 14:41:10,090 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-30 14:41:10,091 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-30 14:41:10,091 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-30 14:41:10,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:41:10,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-30 14:41:10,092 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)] === [2024-01-30 14:41:10,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:41:10,097 INFO L85 PathProgramCache]: Analyzing trace with hash 14150, now seen corresponding path program 1 times [2024-01-30 14:41:10,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:41:10,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535435023] [2024-01-30 14:41:10,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:41:10,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:41:10,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:41:10,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:41:10,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:41:10,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535435023] [2024-01-30 14:41:10,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535435023] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:41:10,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:41:10,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-30 14:41:10,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440496903] [2024-01-30 14:41:10,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:41:10,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-30 14:41:10,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:41:10,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-30 14:41:10,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-30 14:41:10,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 115 [2024-01-30 14:41:10,644 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) [2024-01-30 14:41:10,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:41:10,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 115 [2024-01-30 14:41:10,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:41:11,134 INFO L124 PetriNetUnfolderBase]: 1189/2853 cut-off events. [2024-01-30 14:41:11,135 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2024-01-30 14:41:11,142 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. [2024-01-30 14:41:11,156 INFO L140 encePairwiseOnDemand]: 108/115 looper letters, 47 selfloop transitions, 2 changer transitions 0/106 dead transitions. [2024-01-30 14:41:11,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 106 transitions, 319 flow [2024-01-30 14:41:11,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-30 14:41:11,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-30 14:41:11,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 231 transitions. [2024-01-30 14:41:11,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6695652173913044 [2024-01-30 14:41:11,175 INFO L175 Difference]: Start difference. First operand has 110 places, 111 transitions, 231 flow. Second operand 3 states and 231 transitions. [2024-01-30 14:41:11,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 106 transitions, 319 flow [2024-01-30 14:41:11,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 106 transitions, 314 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-30 14:41:11,189 INFO L231 Difference]: Finished difference. Result has 106 places, 106 transitions, 220 flow [2024-01-30 14:41:11,191 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} [2024-01-30 14:41:11,196 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, -4 predicate places. [2024-01-30 14:41:11,196 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 106 transitions, 220 flow [2024-01-30 14:41:11,196 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) [2024-01-30 14:41:11,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:41:11,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-01-30 14:41:11,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-30 14:41:11,198 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)] === [2024-01-30 14:41:11,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:41:11,199 INFO L85 PathProgramCache]: Analyzing trace with hash 13614435, now seen corresponding path program 1 times [2024-01-30 14:41:11,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:41:11,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308176014] [2024-01-30 14:41:11,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:41:11,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:41:11,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:41:11,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:41:11,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:41:11,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308176014] [2024-01-30 14:41:11,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308176014] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:41:11,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:41:11,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:41:11,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401180172] [2024-01-30 14:41:11,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:41:11,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:41:11,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:41:11,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:41:11,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:41:11,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 115 [2024-01-30 14:41:11,473 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) [2024-01-30 14:41:11,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:41:11,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 115 [2024-01-30 14:41:11,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:41:11,811 INFO L124 PetriNetUnfolderBase]: 1189/2851 cut-off events. [2024-01-30 14:41:11,811 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-01-30 14:41:11,816 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. [2024-01-30 14:41:11,827 INFO L140 encePairwiseOnDemand]: 109/115 looper letters, 45 selfloop transitions, 4 changer transitions 0/104 dead transitions. [2024-01-30 14:41:11,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 104 transitions, 314 flow [2024-01-30 14:41:11,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:41:11,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:41:11,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 279 transitions. [2024-01-30 14:41:11,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6065217391304348 [2024-01-30 14:41:11,832 INFO L175 Difference]: Start difference. First operand has 106 places, 106 transitions, 220 flow. Second operand 4 states and 279 transitions. [2024-01-30 14:41:11,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 104 transitions, 314 flow [2024-01-30 14:41:11,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 104 transitions, 310 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:41:11,834 INFO L231 Difference]: Finished difference. Result has 105 places, 104 transitions, 220 flow [2024-01-30 14:41:11,835 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} [2024-01-30 14:41:11,835 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, -5 predicate places. [2024-01-30 14:41:11,836 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 104 transitions, 220 flow [2024-01-30 14:41:11,836 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) [2024-01-30 14:41:11,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:41:11,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:41:11,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-30 14:41:11,837 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)] === [2024-01-30 14:41:11,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:41:11,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1861158038, now seen corresponding path program 1 times [2024-01-30 14:41:11,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:41:11,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231404580] [2024-01-30 14:41:11,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:41:11,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:41:11,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:41:11,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:41:11,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:41:11,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231404580] [2024-01-30 14:41:11,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231404580] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:41:11,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:41:11,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:41:11,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196201119] [2024-01-30 14:41:11,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:41:11,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:41:11,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:41:11,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:41:11,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:41:12,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 115 [2024-01-30 14:41:12,077 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) [2024-01-30 14:41:12,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:41:12,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 115 [2024-01-30 14:41:12,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:41:12,622 INFO L124 PetriNetUnfolderBase]: 1774/4487 cut-off events. [2024-01-30 14:41:12,622 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-01-30 14:41:12,627 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. [2024-01-30 14:41:12,644 INFO L140 encePairwiseOnDemand]: 102/115 looper letters, 95 selfloop transitions, 9 changer transitions 0/156 dead transitions. [2024-01-30 14:41:12,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 156 transitions, 538 flow [2024-01-30 14:41:12,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:41:12,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:41:12,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 347 transitions. [2024-01-30 14:41:12,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7543478260869565 [2024-01-30 14:41:12,647 INFO L175 Difference]: Start difference. First operand has 105 places, 104 transitions, 220 flow. Second operand 4 states and 347 transitions. [2024-01-30 14:41:12,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 156 transitions, 538 flow [2024-01-30 14:41:12,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 156 transitions, 530 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-30 14:41:12,653 INFO L231 Difference]: Finished difference. Result has 106 places, 107 transitions, 272 flow [2024-01-30 14:41:12,653 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} [2024-01-30 14:41:12,654 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, -4 predicate places. [2024-01-30 14:41:12,655 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 107 transitions, 272 flow [2024-01-30 14:41:12,655 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) [2024-01-30 14:41:12,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:41:12,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:41:12,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-30 14:41:12,658 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 68 more)] === [2024-01-30 14:41:12,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:41:12,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1593896119, now seen corresponding path program 1 times [2024-01-30 14:41:12,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:41:12,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475999433] [2024-01-30 14:41:12,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:41:12,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:41:12,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:41:12,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:41:12,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:41:12,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475999433] [2024-01-30 14:41:12,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475999433] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:41:12,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:41:12,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:41:12,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679259328] [2024-01-30 14:41:12,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:41:12,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:41:12,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:41:12,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:41:12,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:41:12,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 115 [2024-01-30 14:41:12,840 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) [2024-01-30 14:41:12,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:41:12,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 115 [2024-01-30 14:41:12,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:41:13,329 INFO L124 PetriNetUnfolderBase]: 1390/4004 cut-off events. [2024-01-30 14:41:13,329 INFO L125 PetriNetUnfolderBase]: For 258/266 co-relation queries the response was YES. [2024-01-30 14:41:13,335 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. [2024-01-30 14:41:13,349 INFO L140 encePairwiseOnDemand]: 111/115 looper letters, 53 selfloop transitions, 2 changer transitions 0/114 dead transitions. [2024-01-30 14:41:13,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 114 transitions, 398 flow [2024-01-30 14:41:13,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:41:13,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:41:13,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 318 transitions. [2024-01-30 14:41:13,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.691304347826087 [2024-01-30 14:41:13,352 INFO L175 Difference]: Start difference. First operand has 106 places, 107 transitions, 272 flow. Second operand 4 states and 318 transitions. [2024-01-30 14:41:13,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 114 transitions, 398 flow [2024-01-30 14:41:13,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 114 transitions, 398 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-30 14:41:13,359 INFO L231 Difference]: Finished difference. Result has 107 places, 105 transitions, 272 flow [2024-01-30 14:41:13,359 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} [2024-01-30 14:41:13,361 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, -3 predicate places. [2024-01-30 14:41:13,361 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 105 transitions, 272 flow [2024-01-30 14:41:13,361 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) [2024-01-30 14:41:13,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:41:13,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:41:13,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-30 14:41:13,362 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 68 more)] === [2024-01-30 14:41:13,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:41:13,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1569171308, now seen corresponding path program 1 times [2024-01-30 14:41:13,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:41:13,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74985675] [2024-01-30 14:41:13,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:41:13,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:41:13,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:41:13,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:41:13,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:41:13,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74985675] [2024-01-30 14:41:13,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74985675] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:41:13,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:41:13,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:41:13,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350707] [2024-01-30 14:41:13,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:41:13,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:41:13,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:41:13,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:41:13,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:41:13,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 115 [2024-01-30 14:41:13,454 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) [2024-01-30 14:41:13,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:41:13,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 115 [2024-01-30 14:41:13,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:41:14,100 INFO L124 PetriNetUnfolderBase]: 2147/5554 cut-off events. [2024-01-30 14:41:14,101 INFO L125 PetriNetUnfolderBase]: For 416/416 co-relation queries the response was YES. [2024-01-30 14:41:14,108 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. [2024-01-30 14:41:14,131 INFO L140 encePairwiseOnDemand]: 110/115 looper letters, 90 selfloop transitions, 3 changer transitions 0/146 dead transitions. [2024-01-30 14:41:14,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 146 transitions, 562 flow [2024-01-30 14:41:14,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:41:14,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:41:14,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 332 transitions. [2024-01-30 14:41:14,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7217391304347827 [2024-01-30 14:41:14,133 INFO L175 Difference]: Start difference. First operand has 107 places, 105 transitions, 272 flow. Second operand 4 states and 332 transitions. [2024-01-30 14:41:14,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 146 transitions, 562 flow [2024-01-30 14:41:14,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 146 transitions, 559 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:41:14,138 INFO L231 Difference]: Finished difference. Result has 109 places, 106 transitions, 285 flow [2024-01-30 14:41:14,138 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} [2024-01-30 14:41:14,140 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, -1 predicate places. [2024-01-30 14:41:14,140 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 106 transitions, 285 flow [2024-01-30 14:41:14,140 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) [2024-01-30 14:41:14,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:41:14,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:41:14,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-30 14:41:14,141 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 68 more)] === [2024-01-30 14:41:14,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:41:14,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1566636604, now seen corresponding path program 1 times [2024-01-30 14:41:14,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:41:14,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922180972] [2024-01-30 14:41:14,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:41:14,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:41:14,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:41:14,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:41:14,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:41:14,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922180972] [2024-01-30 14:41:14,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922180972] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:41:14,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:41:14,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:41:14,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714825325] [2024-01-30 14:41:14,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:41:14,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:41:14,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:41:14,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:41:14,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:41:14,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 115 [2024-01-30 14:41:14,298 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) [2024-01-30 14:41:14,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:41:14,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 115 [2024-01-30 14:41:14,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:41:14,924 INFO L124 PetriNetUnfolderBase]: 1627/4696 cut-off events. [2024-01-30 14:41:14,924 INFO L125 PetriNetUnfolderBase]: For 418/446 co-relation queries the response was YES. [2024-01-30 14:41:14,932 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. [2024-01-30 14:41:14,946 INFO L140 encePairwiseOnDemand]: 111/115 looper letters, 82 selfloop transitions, 2 changer transitions 0/141 dead transitions. [2024-01-30 14:41:14,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 141 transitions, 572 flow [2024-01-30 14:41:14,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:41:14,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:41:14,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 340 transitions. [2024-01-30 14:41:14,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7391304347826086 [2024-01-30 14:41:14,948 INFO L175 Difference]: Start difference. First operand has 109 places, 106 transitions, 285 flow. Second operand 4 states and 340 transitions. [2024-01-30 14:41:14,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 141 transitions, 572 flow [2024-01-30 14:41:14,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 141 transitions, 562 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:41:14,952 INFO L231 Difference]: Finished difference. Result has 108 places, 104 transitions, 281 flow [2024-01-30 14:41:14,953 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} [2024-01-30 14:41:14,953 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, -2 predicate places. [2024-01-30 14:41:14,954 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 104 transitions, 281 flow [2024-01-30 14:41:14,954 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) [2024-01-30 14:41:14,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:41:14,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:41:14,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-30 14:41:14,955 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 68 more)] === [2024-01-30 14:41:14,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:41:14,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1995725985, now seen corresponding path program 1 times [2024-01-30 14:41:14,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:41:14,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084009240] [2024-01-30 14:41:14,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:41:14,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:41:14,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:41:15,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:41:15,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:41:15,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084009240] [2024-01-30 14:41:15,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084009240] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:41:15,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:41:15,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:41:15,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024217991] [2024-01-30 14:41:15,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:41:15,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:41:15,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:41:15,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:41:15,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:41:15,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 115 [2024-01-30 14:41:15,061 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) [2024-01-30 14:41:15,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:41:15,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 115 [2024-01-30 14:41:15,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:41:16,171 INFO L124 PetriNetUnfolderBase]: 3669/9196 cut-off events. [2024-01-30 14:41:16,172 INFO L125 PetriNetUnfolderBase]: For 1303/1417 co-relation queries the response was YES. [2024-01-30 14:41:16,187 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. [2024-01-30 14:41:16,213 INFO L140 encePairwiseOnDemand]: 110/115 looper letters, 110 selfloop transitions, 3 changer transitions 0/162 dead transitions. [2024-01-30 14:41:16,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 162 transitions, 685 flow [2024-01-30 14:41:16,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:41:16,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:41:16,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 338 transitions. [2024-01-30 14:41:16,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7347826086956522 [2024-01-30 14:41:16,215 INFO L175 Difference]: Start difference. First operand has 108 places, 104 transitions, 281 flow. Second operand 4 states and 338 transitions. [2024-01-30 14:41:16,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 162 transitions, 685 flow [2024-01-30 14:41:16,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 162 transitions, 682 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:41:16,220 INFO L231 Difference]: Finished difference. Result has 110 places, 105 transitions, 294 flow [2024-01-30 14:41:16,220 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} [2024-01-30 14:41:16,221 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, 0 predicate places. [2024-01-30 14:41:16,221 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 105 transitions, 294 flow [2024-01-30 14:41:16,221 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) [2024-01-30 14:41:16,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:41:16,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:41:16,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-30 14:41:16,222 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 68 more)] === [2024-01-30 14:41:16,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:41:16,222 INFO L85 PathProgramCache]: Analyzing trace with hash 758920239, now seen corresponding path program 1 times [2024-01-30 14:41:16,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:41:16,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661808085] [2024-01-30 14:41:16,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:41:16,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:41:16,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:41:16,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:41:16,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:41:16,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661808085] [2024-01-30 14:41:16,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661808085] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:41:16,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:41:16,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-30 14:41:16,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185626156] [2024-01-30 14:41:16,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:41:16,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-30 14:41:16,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:41:16,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-30 14:41:16,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-30 14:41:16,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 115 [2024-01-30 14:41:16,558 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) [2024-01-30 14:41:16,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:41:16,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 115 [2024-01-30 14:41:16,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:41:18,026 INFO L124 PetriNetUnfolderBase]: 5534/12494 cut-off events. [2024-01-30 14:41:18,026 INFO L125 PetriNetUnfolderBase]: For 2958/3123 co-relation queries the response was YES. [2024-01-30 14:41:18,040 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. [2024-01-30 14:41:18,077 INFO L140 encePairwiseOnDemand]: 103/115 looper letters, 150 selfloop transitions, 17 changer transitions 0/205 dead transitions. [2024-01-30 14:41:18,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 205 transitions, 935 flow [2024-01-30 14:41:18,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-30 14:41:18,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-30 14:41:18,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 437 transitions. [2024-01-30 14:41:18,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2024-01-30 14:41:18,081 INFO L175 Difference]: Start difference. First operand has 110 places, 105 transitions, 294 flow. Second operand 6 states and 437 transitions. [2024-01-30 14:41:18,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 205 transitions, 935 flow [2024-01-30 14:41:18,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 205 transitions, 919 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:41:18,088 INFO L231 Difference]: Finished difference. Result has 116 places, 116 transitions, 419 flow [2024-01-30 14:41:18,088 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} [2024-01-30 14:41:18,090 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, 6 predicate places. [2024-01-30 14:41:18,090 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 116 transitions, 419 flow [2024-01-30 14:41:18,091 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) [2024-01-30 14:41:18,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:41:18,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:41:18,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-30 14:41:18,091 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 68 more)] === [2024-01-30 14:41:18,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:41:18,092 INFO L85 PathProgramCache]: Analyzing trace with hash 560038346, now seen corresponding path program 1 times [2024-01-30 14:41:18,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:41:18,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309674450] [2024-01-30 14:41:18,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:41:18,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:41:18,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:41:18,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:41:18,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:41:18,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309674450] [2024-01-30 14:41:18,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309674450] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:41:18,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:41:18,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-30 14:41:18,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579666162] [2024-01-30 14:41:18,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:41:18,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-30 14:41:18,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:41:18,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-30 14:41:18,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-30 14:41:18,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 115 [2024-01-30 14:41:18,402 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) [2024-01-30 14:41:18,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:41:18,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 115 [2024-01-30 14:41:18,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:41:19,726 INFO L124 PetriNetUnfolderBase]: 6344/13787 cut-off events. [2024-01-30 14:41:19,727 INFO L125 PetriNetUnfolderBase]: For 5695/5873 co-relation queries the response was YES. [2024-01-30 14:41:19,743 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. [2024-01-30 14:41:19,784 INFO L140 encePairwiseOnDemand]: 103/115 looper letters, 152 selfloop transitions, 20 changer transitions 0/210 dead transitions. [2024-01-30 14:41:19,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 210 transitions, 1032 flow [2024-01-30 14:41:19,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-30 14:41:19,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-30 14:41:19,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 442 transitions. [2024-01-30 14:41:19,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6405797101449275 [2024-01-30 14:41:19,786 INFO L175 Difference]: Start difference. First operand has 116 places, 116 transitions, 419 flow. Second operand 6 states and 442 transitions. [2024-01-30 14:41:19,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 210 transitions, 1032 flow [2024-01-30 14:41:19,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 210 transitions, 1028 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-30 14:41:19,794 INFO L231 Difference]: Finished difference. Result has 123 places, 121 transitions, 519 flow [2024-01-30 14:41:19,794 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} [2024-01-30 14:41:19,795 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, 13 predicate places. [2024-01-30 14:41:19,795 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 121 transitions, 519 flow [2024-01-30 14:41:19,795 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) [2024-01-30 14:41:19,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:41:19,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:41:19,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-30 14:41:19,796 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 68 more)] === [2024-01-30 14:41:19,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:41:19,796 INFO L85 PathProgramCache]: Analyzing trace with hash 285531218, now seen corresponding path program 1 times [2024-01-30 14:41:19,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:41:19,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046868383] [2024-01-30 14:41:19,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:41:19,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:41:19,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:41:19,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:41:19,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:41:19,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046868383] [2024-01-30 14:41:19,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046868383] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:41:19,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:41:19,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-30 14:41:19,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890421299] [2024-01-30 14:41:19,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:41:19,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-30 14:41:19,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:41:19,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-30 14:41:19,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-01-30 14:41:20,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 115 [2024-01-30 14:41:20,247 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) [2024-01-30 14:41:20,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:41:20,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 115 [2024-01-30 14:41:20,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:41:21,621 INFO L124 PetriNetUnfolderBase]: 5449/11795 cut-off events. [2024-01-30 14:41:21,621 INFO L125 PetriNetUnfolderBase]: For 10145/10361 co-relation queries the response was YES. [2024-01-30 14:41:21,635 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. [2024-01-30 14:41:21,671 INFO L140 encePairwiseOnDemand]: 100/115 looper letters, 145 selfloop transitions, 20 changer transitions 0/206 dead transitions. [2024-01-30 14:41:21,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 206 transitions, 1113 flow [2024-01-30 14:41:21,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-30 14:41:21,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-30 14:41:21,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 459 transitions. [2024-01-30 14:41:21,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6652173913043479 [2024-01-30 14:41:21,673 INFO L175 Difference]: Start difference. First operand has 123 places, 121 transitions, 519 flow. Second operand 6 states and 459 transitions. [2024-01-30 14:41:21,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 206 transitions, 1113 flow [2024-01-30 14:41:21,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 206 transitions, 1094 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:41:21,690 INFO L231 Difference]: Finished difference. Result has 128 places, 123 transitions, 570 flow [2024-01-30 14:41:21,691 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} [2024-01-30 14:41:21,692 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, 18 predicate places. [2024-01-30 14:41:21,692 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 123 transitions, 570 flow [2024-01-30 14:41:21,693 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) [2024-01-30 14:41:21,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:41:21,693 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] [2024-01-30 14:41:21,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-30 14:41:21,693 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err12ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 68 more)] === [2024-01-30 14:41:21,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:41:21,694 INFO L85 PathProgramCache]: Analyzing trace with hash 116120702, now seen corresponding path program 1 times [2024-01-30 14:41:21,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:41:21,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29779478] [2024-01-30 14:41:21,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:41:21,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:41:21,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:41:21,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:41:21,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:41:21,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29779478] [2024-01-30 14:41:21,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29779478] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:41:21,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:41:21,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-30 14:41:21,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562261413] [2024-01-30 14:41:21,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:41:21,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-30 14:41:21,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:41:21,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-30 14:41:21,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-30 14:41:22,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 115 [2024-01-30 14:41:22,117 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) [2024-01-30 14:41:22,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:41:22,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 115 [2024-01-30 14:41:22,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:41:23,296 INFO L124 PetriNetUnfolderBase]: 5881/12993 cut-off events. [2024-01-30 14:41:23,296 INFO L125 PetriNetUnfolderBase]: For 9863/10035 co-relation queries the response was YES. [2024-01-30 14:41:23,325 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. [2024-01-30 14:41:23,371 INFO L140 encePairwiseOnDemand]: 105/115 looper letters, 150 selfloop transitions, 16 changer transitions 0/205 dead transitions. [2024-01-30 14:41:23,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 205 transitions, 1180 flow [2024-01-30 14:41:23,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-30 14:41:23,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-30 14:41:23,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 422 transitions. [2024-01-30 14:41:23,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6115942028985507 [2024-01-30 14:41:23,374 INFO L175 Difference]: Start difference. First operand has 128 places, 123 transitions, 570 flow. Second operand 6 states and 422 transitions. [2024-01-30 14:41:23,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 205 transitions, 1180 flow [2024-01-30 14:41:23,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 205 transitions, 1142 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-01-30 14:41:23,400 INFO L231 Difference]: Finished difference. Result has 131 places, 124 transitions, 580 flow [2024-01-30 14:41:23,400 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} [2024-01-30 14:41:23,401 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, 21 predicate places. [2024-01-30 14:41:23,401 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 124 transitions, 580 flow [2024-01-30 14:41:23,401 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) [2024-01-30 14:41:23,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:41:23,402 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] [2024-01-30 14:41:23,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-30 14:41:23,402 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 68 more)] === [2024-01-30 14:41:23,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:41:23,402 INFO L85 PathProgramCache]: Analyzing trace with hash -725732929, now seen corresponding path program 1 times [2024-01-30 14:41:23,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:41:23,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268152391] [2024-01-30 14:41:23,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:41:23,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:41:23,419 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2024-01-30 14:41:23,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1756708573] [2024-01-30 14:41:23,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:41:23,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-30 14:41:23,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-30 14:41:23,428 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) [2024-01-30 14:41:23,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-01-30 14:41:23,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:41:23,558 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 4 conjunts are in the unsatisfiable core [2024-01-30 14:41:23,563 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-30 14:41:23,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:41:23,726 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-30 14:41:23,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:41:23,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268152391] [2024-01-30 14:41:23,727 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-01-30 14:41:23,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756708573] [2024-01-30 14:41:23,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756708573] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:41:23,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:41:23,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-30 14:41:23,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459675742] [2024-01-30 14:41:23,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:41:23,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:41:23,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:41:23,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:41:23,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:41:23,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 115 [2024-01-30 14:41:23,758 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) [2024-01-30 14:41:23,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:41:23,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 115 [2024-01-30 14:41:23,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:41:27,988 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] [2024-01-30 14:41:29,293 INFO L124 PetriNetUnfolderBase]: 5481/14301 cut-off events. [2024-01-30 14:41:29,293 INFO L125 PetriNetUnfolderBase]: For 9692/9906 co-relation queries the response was YES. [2024-01-30 14:41:29,330 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. [2024-01-30 14:41:29,370 INFO L140 encePairwiseOnDemand]: 112/115 looper letters, 136 selfloop transitions, 2 changer transitions 0/196 dead transitions. [2024-01-30 14:41:29,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 196 transitions, 1255 flow [2024-01-30 14:41:29,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:41:29,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:41:29,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 357 transitions. [2024-01-30 14:41:29,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7760869565217391 [2024-01-30 14:41:29,373 INFO L175 Difference]: Start difference. First operand has 131 places, 124 transitions, 580 flow. Second operand 4 states and 357 transitions. [2024-01-30 14:41:29,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 196 transitions, 1255 flow [2024-01-30 14:41:29,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 196 transitions, 1227 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-30 14:41:29,395 INFO L231 Difference]: Finished difference. Result has 131 places, 124 transitions, 574 flow [2024-01-30 14:41:29,396 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} [2024-01-30 14:41:29,396 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, 21 predicate places. [2024-01-30 14:41:29,396 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 124 transitions, 574 flow [2024-01-30 14:41:29,397 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) [2024-01-30 14:41:29,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:41:29,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:41:29,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-01-30 14:41:29,611 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 [2024-01-30 14:41:29,612 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err13ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 68 more)] === [2024-01-30 14:41:29,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:41:29,612 INFO L85 PathProgramCache]: Analyzing trace with hash -695224988, now seen corresponding path program 1 times [2024-01-30 14:41:29,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:41:29,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145587767] [2024-01-30 14:41:29,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:41:29,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:41:29,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:41:29,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:41:29,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:41:29,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145587767] [2024-01-30 14:41:29,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145587767] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:41:29,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:41:29,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-30 14:41:29,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566820710] [2024-01-30 14:41:29,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:41:29,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-30 14:41:29,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:41:29,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-30 14:41:29,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-01-30 14:41:29,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 115 [2024-01-30 14:41:29,929 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) [2024-01-30 14:41:29,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:41:29,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 115 [2024-01-30 14:41:29,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:41:32,083 INFO L124 PetriNetUnfolderBase]: 10651/22143 cut-off events. [2024-01-30 14:41:32,083 INFO L125 PetriNetUnfolderBase]: For 15171/15489 co-relation queries the response was YES. [2024-01-30 14:41:32,132 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. [2024-01-30 14:41:32,187 INFO L140 encePairwiseOnDemand]: 103/115 looper letters, 142 selfloop transitions, 6 changer transitions 0/185 dead transitions. [2024-01-30 14:41:32,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 185 transitions, 1087 flow [2024-01-30 14:41:32,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-30 14:41:32,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-30 14:41:32,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 369 transitions. [2024-01-30 14:41:32,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6417391304347826 [2024-01-30 14:41:32,189 INFO L175 Difference]: Start difference. First operand has 131 places, 124 transitions, 574 flow. Second operand 5 states and 369 transitions. [2024-01-30 14:41:32,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 185 transitions, 1087 flow [2024-01-30 14:41:32,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 185 transitions, 1087 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-30 14:41:32,222 INFO L231 Difference]: Finished difference. Result has 136 places, 126 transitions, 618 flow [2024-01-30 14:41:32,222 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} [2024-01-30 14:41:32,222 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, 26 predicate places. [2024-01-30 14:41:32,222 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 126 transitions, 618 flow [2024-01-30 14:41:32,223 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) [2024-01-30 14:41:32,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:41:32,223 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] [2024-01-30 14:41:32,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-01-30 14:41:32,223 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 68 more)] === [2024-01-30 14:41:32,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:41:32,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1012438482, now seen corresponding path program 1 times [2024-01-30 14:41:32,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:41:32,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554642473] [2024-01-30 14:41:32,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:41:32,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:41:32,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:41:32,368 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:41:32,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:41:32,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554642473] [2024-01-30 14:41:32,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554642473] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-30 14:41:32,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192585117] [2024-01-30 14:41:32,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:41:32,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-30 14:41:32,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-30 14:41:32,372 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) [2024-01-30 14:41:32,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-01-30 14:41:32,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:41:32,492 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 6 conjunts are in the unsatisfiable core [2024-01-30 14:41:32,493 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-30 14:41:32,577 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:41:32,578 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-30 14:41:33,060 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:41:33,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192585117] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-30 14:41:33,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-30 14:41:33,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2024-01-30 14:41:33,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117147796] [2024-01-30 14:41:33,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-30 14:41:33,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-30 14:41:33,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:41:33,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-30 14:41:33,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-01-30 14:41:33,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 115 [2024-01-30 14:41:33,175 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) [2024-01-30 14:41:33,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:41:33,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 115 [2024-01-30 14:41:33,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:41:37,350 INFO L124 PetriNetUnfolderBase]: 15825/34300 cut-off events. [2024-01-30 14:41:37,351 INFO L125 PetriNetUnfolderBase]: For 28977/29537 co-relation queries the response was YES. [2024-01-30 14:41:37,472 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. [2024-01-30 14:41:37,588 INFO L140 encePairwiseOnDemand]: 109/115 looper letters, 303 selfloop transitions, 10 changer transitions 0/362 dead transitions. [2024-01-30 14:41:37,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 362 transitions, 2529 flow [2024-01-30 14:41:37,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-30 14:41:37,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-30 14:41:37,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 677 transitions. [2024-01-30 14:41:37,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7358695652173913 [2024-01-30 14:41:37,590 INFO L175 Difference]: Start difference. First operand has 136 places, 126 transitions, 618 flow. Second operand 8 states and 677 transitions. [2024-01-30 14:41:37,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 362 transitions, 2529 flow [2024-01-30 14:41:37,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 362 transitions, 2481 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-01-30 14:41:37,659 INFO L231 Difference]: Finished difference. Result has 143 places, 128 transitions, 652 flow [2024-01-30 14:41:37,660 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} [2024-01-30 14:41:37,660 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, 33 predicate places. [2024-01-30 14:41:37,660 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 128 transitions, 652 flow [2024-01-30 14:41:37,661 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) [2024-01-30 14:41:37,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:41:37,661 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] [2024-01-30 14:41:37,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-01-30 14:41:37,876 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 [2024-01-30 14:41:37,876 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 68 more)] === [2024-01-30 14:41:37,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:41:37,877 INFO L85 PathProgramCache]: Analyzing trace with hash 2001081499, now seen corresponding path program 1 times [2024-01-30 14:41:37,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:41:37,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849477923] [2024-01-30 14:41:37,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:41:37,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:41:37,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:41:38,189 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:41:38,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:41:38,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849477923] [2024-01-30 14:41:38,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849477923] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-30 14:41:38,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910342520] [2024-01-30 14:41:38,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:41:38,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-30 14:41:38,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-30 14:41:38,191 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) [2024-01-30 14:41:38,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-01-30 14:41:38,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:41:38,311 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 10 conjunts are in the unsatisfiable core [2024-01-30 14:41:38,314 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-30 14:41:38,557 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:41:38,557 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-30 14:41:39,662 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:41:39,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910342520] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-30 14:41:39,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-30 14:41:39,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 14 [2024-01-30 14:41:39,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541121712] [2024-01-30 14:41:39,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-30 14:41:39,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-01-30 14:41:39,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:41:39,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-01-30 14:41:39,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2024-01-30 14:41:40,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 115 [2024-01-30 14:41:40,384 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) [2024-01-30 14:41:40,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:41:40,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 115 [2024-01-30 14:41:40,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:41:50,290 INFO L124 PetriNetUnfolderBase]: 41229/82603 cut-off events. [2024-01-30 14:41:50,290 INFO L125 PetriNetUnfolderBase]: For 68524/69334 co-relation queries the response was YES. [2024-01-30 14:41:50,528 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. [2024-01-30 14:41:50,739 INFO L140 encePairwiseOnDemand]: 88/115 looper letters, 466 selfloop transitions, 115 changer transitions 0/615 dead transitions. [2024-01-30 14:41:50,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 615 transitions, 3849 flow [2024-01-30 14:41:50,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-01-30 14:41:50,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-01-30 14:41:50,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1508 transitions. [2024-01-30 14:41:50,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5701323251417769 [2024-01-30 14:41:50,742 INFO L175 Difference]: Start difference. First operand has 143 places, 128 transitions, 652 flow. Second operand 23 states and 1508 transitions. [2024-01-30 14:41:50,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 615 transitions, 3849 flow [2024-01-30 14:41:51,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 615 transitions, 3793 flow, removed 20 selfloop flow, removed 3 redundant places. [2024-01-30 14:41:51,295 INFO L231 Difference]: Finished difference. Result has 179 places, 222 transitions, 1881 flow [2024-01-30 14:41:51,295 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} [2024-01-30 14:41:51,296 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, 69 predicate places. [2024-01-30 14:41:51,296 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 222 transitions, 1881 flow [2024-01-30 14:41:51,296 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) [2024-01-30 14:41:51,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:41:51,297 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] [2024-01-30 14:41:51,314 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-01-30 14:41:51,514 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 [2024-01-30 14:41:51,515 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 68 more)] === [2024-01-30 14:41:51,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:41:51,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1847996758, now seen corresponding path program 1 times [2024-01-30 14:41:51,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:41:51,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221259403] [2024-01-30 14:41:51,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:41:51,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:41:51,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:41:51,700 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:41:51,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:41:51,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221259403] [2024-01-30 14:41:51,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221259403] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-30 14:41:51,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190577559] [2024-01-30 14:41:51,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:41:51,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-30 14:41:51,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-30 14:41:51,704 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) [2024-01-30 14:41:51,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-01-30 14:41:51,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:41:51,814 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 6 conjunts are in the unsatisfiable core [2024-01-30 14:41:51,815 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-30 14:41:51,895 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:41:51,895 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-30 14:41:52,315 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:41:52,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190577559] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-30 14:41:52,316 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-30 14:41:52,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2024-01-30 14:41:52,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088233783] [2024-01-30 14:41:52,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-30 14:41:52,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-30 14:41:52,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:41:52,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-30 14:41:52,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-01-30 14:41:52,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 115 [2024-01-30 14:41:52,421 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) [2024-01-30 14:41:52,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:41:52,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 115 [2024-01-30 14:41:52,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand