./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe036.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/safe036.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fced0e87 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-wmm/safe036.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/safe036.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.extract-columns-fced0e8-m [2024-01-31 16:04:36,155 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 16:04:36,251 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 16:04:36,257 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 16:04:36,258 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 16:04:36,288 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 16:04:36,289 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 16:04:36,290 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 16:04:36,290 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 16:04:36,294 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 16:04:36,295 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 16:04:36,295 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 16:04:36,296 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 16:04:36,297 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 16:04:36,298 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 16:04:36,298 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 16:04:36,298 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 16:04:36,299 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 16:04:36,299 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 16:04:36,299 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 16:04:36,300 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 16:04:36,300 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 16:04:36,300 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 16:04:36,301 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 16:04:36,301 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 16:04:36,301 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 16:04:36,302 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 16:04:36,302 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 16:04:36,303 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 16:04:36,303 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 16:04:36,304 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 16:04:36,304 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 16:04:36,304 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:04:36,305 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 16:04:36,305 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 16:04:36,305 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 16:04:36,305 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 16:04:36,306 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 16:04:36,306 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 16:04:36,306 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 16:04:36,306 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 16:04:36,307 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 16:04:36,307 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 16:04:36,307 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 16:04:36,567 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 16:04:36,602 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 16:04:36,605 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 16:04:36,606 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 16:04:36,606 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 16:04:36,608 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe036.i [2024-01-31 16:04:37,856 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 16:04:38,151 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 16:04:38,152 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe036.i [2024-01-31 16:04:38,167 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e08557940/259287f67ac14575a733ab9fd51972a4/FLAGe7a478e04 [2024-01-31 16:04:38,181 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e08557940/259287f67ac14575a733ab9fd51972a4 [2024-01-31 16:04:38,183 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 16:04:38,184 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 16:04:38,185 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/safe036.yml/witness.yml [2024-01-31 16:04:38,419 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 16:04:38,421 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 16:04:38,422 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 16:04:38,422 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 16:04:38,443 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 16:04:38,448 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:04:38" (1/2) ... [2024-01-31 16:04:38,450 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67bf7159 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:04:38, skipping insertion in model container [2024-01-31 16:04:38,450 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:04:38" (1/2) ... [2024-01-31 16:04:38,452 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@a67c9f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:04:38, skipping insertion in model container [2024-01-31 16:04:38,453 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:04:38" (2/2) ... [2024-01-31 16:04:38,453 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67bf7159 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:04:38, skipping insertion in model container [2024-01-31 16:04:38,453 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:04:38" (2/2) ... [2024-01-31 16:04:38,454 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 16:04:38,736 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 16:04:38,738 INFO L98 nessWitnessExtractor]: Location invariant after [L18-L18] expression == 1 [2024-01-31 16:04:38,739 INFO L98 nessWitnessExtractor]: Location invariant before [L751-L751] (unsigned long )arg == 0UL [2024-01-31 16:04:38,739 INFO L98 nessWitnessExtractor]: Location invariant before [L769-L769] ((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y <= 1)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-01-31 16:04:38,739 INFO L98 nessWitnessExtractor]: Location invariant before [L722-L722] (((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y <= 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-01-31 16:04:38,739 INFO L98 nessWitnessExtractor]: Location invariant before [L732-L732] (((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y <= 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-01-31 16:04:38,740 INFO L98 nessWitnessExtractor]: Location invariant before [L750-L750] (((((((((((((((0 <= __unbuffered_p0_EAX) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (0 <= y)) && (1 <= __unbuffered_cnt)) && (__unbuffered_p0_EAX <= 1)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y <= 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-01-31 16:04:38,740 INFO L98 nessWitnessExtractor]: Location invariant before [L745-L745] (((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y <= 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-01-31 16:04:38,740 INFO L98 nessWitnessExtractor]: Location invariant before [L733-L733] (((((((((((((((0 <= __unbuffered_p0_EAX) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (0 <= y)) && (1 <= __unbuffered_cnt)) && (__unbuffered_p0_EAX <= 1)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y <= 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-01-31 16:04:38,740 INFO L98 nessWitnessExtractor]: Location invariant before [L747-L747] (((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y <= 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-01-31 16:04:38,741 INFO L98 nessWitnessExtractor]: Location invariant before [L744-L744] (((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y <= 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-01-31 16:04:38,741 INFO L98 nessWitnessExtractor]: Location invariant before [L18-L18] ((0 <= expression) && (expression <= 1)) && (expression == 0 || expression == 1) [2024-01-31 16:04:38,741 INFO L98 nessWitnessExtractor]: Location invariant before [L731-L731] (unsigned long )arg == 0UL [2024-01-31 16:04:38,741 INFO L98 nessWitnessExtractor]: Location invariant before [L18-L18] expression == 0 [2024-01-31 16:04:38,741 INFO L98 nessWitnessExtractor]: Location invariant before [L746-L746] (unsigned long )arg == 0UL [2024-01-31 16:04:38,741 INFO L98 nessWitnessExtractor]: Location invariant before [L776-L776] ((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y <= 1)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-01-31 16:04:38,742 INFO L98 nessWitnessExtractor]: Location invariant before [L734-L734] (unsigned long )arg == 0UL [2024-01-31 16:04:38,742 INFO L98 nessWitnessExtractor]: Location invariant before [L728-L728] (((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y <= 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-01-31 16:04:38,742 INFO L98 nessWitnessExtractor]: Location invariant before [L723-L723] (((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (__unbuffered_p0_EAX <= 1)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y == 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1) [2024-01-31 16:04:38,742 INFO L98 nessWitnessExtractor]: Location invariant before [L748-L748] (unsigned long )arg == 0UL [2024-01-31 16:04:38,742 INFO L98 nessWitnessExtractor]: Location invariant before [L742-L742] (((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y <= 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-01-31 16:04:38,742 INFO L98 nessWitnessExtractor]: Location invariant before [L749-L749] (((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y <= 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-01-31 16:04:38,743 INFO L98 nessWitnessExtractor]: Location invariant before [L775-L775] ((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y <= 1)) && (__unbuffered_p0_EAX == 0)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-01-31 16:04:38,743 INFO L98 nessWitnessExtractor]: Location invariant before [L738-L738] (unsigned long )arg == 0UL [2024-01-31 16:04:38,743 INFO L98 nessWitnessExtractor]: Location invariant before [L727-L727] (((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y <= 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-01-31 16:04:38,744 INFO L98 nessWitnessExtractor]: Location invariant before [L773-L773] ((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y <= 1)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-01-31 16:04:38,744 INFO L98 nessWitnessExtractor]: Location invariant before [L740-L740] (((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= __unbuffered_p1_EAX)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (__unbuffered_p1_EAX <= 1)) && (y <= 1)) && (x == 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (y == 0 || y == 1) [2024-01-31 16:04:38,744 INFO L98 nessWitnessExtractor]: Location invariant before [L739-L739] (((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y <= 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-01-31 16:04:38,744 INFO L98 nessWitnessExtractor]: Location invariant after [L18-L18] expression == 1 [2024-01-31 16:04:38,744 INFO L98 nessWitnessExtractor]: Location invariant before [L770-L770] ((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y <= 1)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-01-31 16:04:38,744 INFO L98 nessWitnessExtractor]: Location invariant before [L726-L726] (unsigned long )arg == 0UL [2024-01-31 16:04:38,745 INFO L98 nessWitnessExtractor]: Location invariant before [L724-L724] (unsigned long )arg == 0UL [2024-01-31 16:04:38,745 INFO L98 nessWitnessExtractor]: Location invariant before [L743-L743] (unsigned long )arg == 0UL [2024-01-31 16:04:38,745 INFO L98 nessWitnessExtractor]: Location invariant before [L721-L721] (unsigned long )arg == 0UL [2024-01-31 16:04:38,745 INFO L98 nessWitnessExtractor]: Location invariant before [L725-L725] (((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y <= 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-01-31 16:04:38,745 INFO L98 nessWitnessExtractor]: Location invariant before [L18-L18] expression == 1 [2024-01-31 16:04:38,745 INFO L98 nessWitnessExtractor]: Location invariant before [L730-L730] (((((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p0_EAX)) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p0_EAX <= 1)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y <= 1)) && ((unsigned long )arg == 0UL)) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && (x == 0 || x == 1)) && (y == 0 || y == 1) [2024-01-31 16:04:38,746 INFO L98 nessWitnessExtractor]: Location invariant before [L729-L729] (unsigned long )arg == 0UL [2024-01-31 16:04:38,746 INFO L98 nessWitnessExtractor]: Location invariant before [L765-L765] ((((((__unbuffered_cnt == 0) && (__unbuffered_p0_EAX == 0)) && (__unbuffered_p1_EAX == 0)) && (main$tmp_guard0 == (_Bool)0)) && (main$tmp_guard1 == (_Bool)0)) && (x == 0)) && (y == 0) [2024-01-31 16:04:38,747 INFO L98 nessWitnessExtractor]: Location invariant before [L741-L741] (unsigned long )arg == 0UL [2024-01-31 16:04:38,747 INFO L98 nessWitnessExtractor]: Location invariant after [L18-L18] expression == 0 [2024-01-31 16:04:38,809 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 16:04:38,987 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-wmm/safe036.i[941,954] [2024-01-31 16:04:39,171 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:04:39,183 INFO L204 MainTranslator]: Completed pre-run Start Parsing Local [2024-01-31 16:04:39,223 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-wmm/safe036.i[941,954] Start Parsing Local Start Parsing Local [2024-01-31 16:04:39,224 WARN L424 MainDispatcher]: Unable to annotate ; with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local 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 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 [2024-01-31 16:04:39,359 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:04:39,392 INFO L208 MainTranslator]: Completed translation [2024-01-31 16:04:39,393 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:04:39 WrapperNode [2024-01-31 16:04:39,393 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 16:04:39,395 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 16:04:39,395 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 16:04:39,395 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 16:04:39,402 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:04:39" (1/1) ... [2024-01-31 16:04:39,441 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:04:39" (1/1) ... [2024-01-31 16:04:39,479 INFO L138 Inliner]: procedures = 175, calls = 44, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 67 [2024-01-31 16:04:39,489 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 16:04:39,490 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 16:04:39,490 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 16:04:39,490 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 16:04:39,501 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:04:39" (1/1) ... [2024-01-31 16:04:39,502 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:04:39" (1/1) ... [2024-01-31 16:04:39,518 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:04:39" (1/1) ... [2024-01-31 16:04:39,540 INFO L175 MemorySlicer]: Split 4 memory accesses to 3 slices as follows [2, 1, 1]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-01-31 16:04:39,543 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:04:39" (1/1) ... [2024-01-31 16:04:39,543 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:04:39" (1/1) ... [2024-01-31 16:04:39,558 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:04:39" (1/1) ... [2024-01-31 16:04:39,573 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:04:39" (1/1) ... [2024-01-31 16:04:39,576 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:04:39" (1/1) ... [2024-01-31 16:04:39,589 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:04:39" (1/1) ... [2024-01-31 16:04:39,592 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 16:04:39,593 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 16:04:39,593 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 16:04:39,594 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 16:04:39,594 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:04:39" (1/1) ... [2024-01-31 16:04:39,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:04:39,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:04:39,629 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) [2024-01-31 16:04:39,639 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 [2024-01-31 16:04:39,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 16:04:39,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 16:04:39,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 16:04:39,676 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-31 16:04:39,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 16:04:39,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 16:04:39,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 16:04:39,677 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-01-31 16:04:39,677 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-01-31 16:04:39,677 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-01-31 16:04:39,677 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-01-31 16:04:39,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 16:04:39,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 16:04:39,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 16:04:39,678 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-31 16:04:39,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 16:04:39,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 16:04:39,679 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-31 16:04:39,827 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 16:04:39,829 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 16:04:40,342 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 16:04:40,342 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 16:04:40,547 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 16:04:40,547 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-31 16:04:40,548 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:04:40 BoogieIcfgContainer [2024-01-31 16:04:40,549 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 16:04:40,552 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 16:04:40,553 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 16:04:40,556 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 16:04:40,556 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 04:04:38" (1/4) ... [2024-01-31 16:04:40,557 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d3d0df1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:04:40, skipping insertion in model container [2024-01-31 16:04:40,557 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:04:38" (2/4) ... [2024-01-31 16:04:40,558 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d3d0df1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:04:40, skipping insertion in model container [2024-01-31 16:04:40,558 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:04:39" (3/4) ... [2024-01-31 16:04:40,558 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d3d0df1 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:04:40, skipping insertion in model container [2024-01-31 16:04:40,559 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:04:40" (4/4) ... [2024-01-31 16:04:40,561 INFO L112 eAbstractionObserver]: Analyzing ICFG safe036.i [2024-01-31 16:04:40,578 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 16:04:40,579 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2024-01-31 16:04:40,579 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 16:04:40,672 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-31 16:04:40,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 81 transitions, 170 flow [2024-01-31 16:04:40,762 INFO L124 PetriNetUnfolderBase]: 1/79 cut-off events. [2024-01-31 16:04:40,762 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:04:40,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 79 events. 1/79 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 282 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 77. Up to 2 conditions per place. [2024-01-31 16:04:40,768 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 81 transitions, 170 flow [2024-01-31 16:04:40,772 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 85 places, 79 transitions, 164 flow [2024-01-31 16:04:40,813 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:04:40,820 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;@1d8fa395, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:04:40,821 INFO L358 AbstractCegarLoop]: Starting to check reachability of 68 error locations. [2024-01-31 16:04:40,825 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:04:40,825 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-31 16:04:40,825 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:04:40,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:40,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-31 16:04:40,827 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:04:40,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:40,832 INFO L85 PathProgramCache]: Analyzing trace with hash 10987, now seen corresponding path program 1 times [2024-01-31 16:04:40,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:40,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693734925] [2024-01-31 16:04:40,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:40,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:40,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:41,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:41,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:41,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693734925] [2024-01-31 16:04:41,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693734925] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:41,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:41,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 16:04:41,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231765327] [2024-01-31 16:04:41,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:41,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:04:41,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:41,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:04:41,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:04:41,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 81 [2024-01-31 16:04:41,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 79 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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) [2024-01-31 16:04:41,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:41,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 81 [2024-01-31 16:04:41,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:42,407 INFO L124 PetriNetUnfolderBase]: 2719/5611 cut-off events. [2024-01-31 16:04:42,408 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-01-31 16:04:42,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9938 conditions, 5611 events. 2719/5611 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 48588 event pairs, 2089 based on Foata normal form. 121/3394 useless extension candidates. Maximal degree in co-relation 9926. Up to 4269 conditions per place. [2024-01-31 16:04:42,457 INFO L140 encePairwiseOnDemand]: 66/81 looper letters, 42 selfloop transitions, 3 changer transitions 0/77 dead transitions. [2024-01-31 16:04:42,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 77 transitions, 253 flow [2024-01-31 16:04:42,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:04:42,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:04:42,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 162 transitions. [2024-01-31 16:04:42,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-01-31 16:04:42,471 INFO L175 Difference]: Start difference. First operand has 85 places, 79 transitions, 164 flow. Second operand 3 states and 162 transitions. [2024-01-31 16:04:42,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 77 transitions, 253 flow [2024-01-31 16:04:42,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 77 transitions, 250 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:04:42,477 INFO L231 Difference]: Finished difference. Result has 77 places, 71 transitions, 163 flow [2024-01-31 16:04:42,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=163, PETRI_PLACES=77, PETRI_TRANSITIONS=71} [2024-01-31 16:04:42,483 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, -8 predicate places. [2024-01-31 16:04:42,483 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 71 transitions, 163 flow [2024-01-31 16:04:42,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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) [2024-01-31 16:04:42,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:42,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-31 16:04:42,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 16:04:42,484 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:04:42,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:42,485 INFO L85 PathProgramCache]: Analyzing trace with hash 327740999, now seen corresponding path program 1 times [2024-01-31 16:04:42,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:42,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529252392] [2024-01-31 16:04:42,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:42,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:42,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:42,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:42,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:42,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529252392] [2024-01-31 16:04:42,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529252392] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:42,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:42,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:04:42,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680570965] [2024-01-31 16:04:42,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:42,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:04:42,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:42,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:04:42,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:04:42,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 81 [2024-01-31 16:04:42,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 71 transitions, 163 flow. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 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) [2024-01-31 16:04:42,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:42,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 81 [2024-01-31 16:04:42,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:43,522 INFO L124 PetriNetUnfolderBase]: 2930/5968 cut-off events. [2024-01-31 16:04:43,523 INFO L125 PetriNetUnfolderBase]: For 453/453 co-relation queries the response was YES. [2024-01-31 16:04:43,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11181 conditions, 5968 events. 2930/5968 cut-off events. For 453/453 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 50854 event pairs, 2395 based on Foata normal form. 654/4596 useless extension candidates. Maximal degree in co-relation 11168. Up to 4412 conditions per place. [2024-01-31 16:04:43,571 INFO L140 encePairwiseOnDemand]: 73/81 looper letters, 61 selfloop transitions, 2 changer transitions 0/88 dead transitions. [2024-01-31 16:04:43,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 88 transitions, 332 flow [2024-01-31 16:04:43,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:04:43,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:04:43,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 179 transitions. [2024-01-31 16:04:43,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5524691358024691 [2024-01-31 16:04:43,579 INFO L175 Difference]: Start difference. First operand has 77 places, 71 transitions, 163 flow. Second operand 4 states and 179 transitions. [2024-01-31 16:04:43,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 88 transitions, 332 flow [2024-01-31 16:04:43,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 88 transitions, 328 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 16:04:43,582 INFO L231 Difference]: Finished difference. Result has 73 places, 65 transitions, 152 flow [2024-01-31 16:04:43,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=152, PETRI_PLACES=73, PETRI_TRANSITIONS=65} [2024-01-31 16:04:43,583 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, -12 predicate places. [2024-01-31 16:04:43,584 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 65 transitions, 152 flow [2024-01-31 16:04:43,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 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) [2024-01-31 16:04:43,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:43,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-01-31 16:04:43,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 16:04:43,585 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:04:43,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:43,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1570036760, now seen corresponding path program 1 times [2024-01-31 16:04:43,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:43,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272534153] [2024-01-31 16:04:43,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:43,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:43,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:43,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:43,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:43,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272534153] [2024-01-31 16:04:43,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272534153] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:43,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:43,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:04:43,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796970456] [2024-01-31 16:04:43,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:43,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:04:43,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:43,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:04:43,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:04:43,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 81 [2024-01-31 16:04:43,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 65 transitions, 152 flow. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 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) [2024-01-31 16:04:43,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:43,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 81 [2024-01-31 16:04:43,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:44,898 INFO L124 PetriNetUnfolderBase]: 4101/7894 cut-off events. [2024-01-31 16:04:44,899 INFO L125 PetriNetUnfolderBase]: For 753/759 co-relation queries the response was YES. [2024-01-31 16:04:44,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15194 conditions, 7894 events. 4101/7894 cut-off events. For 753/759 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 65794 event pairs, 3164 based on Foata normal form. 11/5484 useless extension candidates. Maximal degree in co-relation 15180. Up to 6398 conditions per place. [2024-01-31 16:04:44,954 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 53 selfloop transitions, 5 changer transitions 0/78 dead transitions. [2024-01-31 16:04:44,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 78 transitions, 302 flow [2024-01-31 16:04:44,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:04:44,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:04:44,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 147 transitions. [2024-01-31 16:04:44,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4537037037037037 [2024-01-31 16:04:44,957 INFO L175 Difference]: Start difference. First operand has 73 places, 65 transitions, 152 flow. Second operand 4 states and 147 transitions. [2024-01-31 16:04:44,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 78 transitions, 302 flow [2024-01-31 16:04:44,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 78 transitions, 298 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:04:44,960 INFO L231 Difference]: Finished difference. Result has 76 places, 67 transitions, 175 flow [2024-01-31 16:04:44,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=175, PETRI_PLACES=76, PETRI_TRANSITIONS=67} [2024-01-31 16:04:44,961 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, -9 predicate places. [2024-01-31 16:04:44,961 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 67 transitions, 175 flow [2024-01-31 16:04:44,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 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) [2024-01-31 16:04:44,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:44,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:44,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 16:04:44,962 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:04:44,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:44,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1424257419, now seen corresponding path program 1 times [2024-01-31 16:04:44,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:44,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068185290] [2024-01-31 16:04:44,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:44,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:44,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:45,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:45,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:45,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068185290] [2024-01-31 16:04:45,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068185290] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:45,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:45,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:04:45,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658285515] [2024-01-31 16:04:45,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:45,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:04:45,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:45,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:04:45,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:04:45,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 81 [2024-01-31 16:04:45,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 67 transitions, 175 flow. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:45,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:45,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 81 [2024-01-31 16:04:45,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:45,948 INFO L124 PetriNetUnfolderBase]: 3006/5628 cut-off events. [2024-01-31 16:04:45,949 INFO L125 PetriNetUnfolderBase]: For 628/636 co-relation queries the response was YES. [2024-01-31 16:04:45,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11163 conditions, 5628 events. 3006/5628 cut-off events. For 628/636 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 44676 event pairs, 443 based on Foata normal form. 693/4709 useless extension candidates. Maximal degree in co-relation 11147. Up to 4547 conditions per place. [2024-01-31 16:04:45,986 INFO L140 encePairwiseOnDemand]: 73/81 looper letters, 69 selfloop transitions, 2 changer transitions 0/91 dead transitions. [2024-01-31 16:04:45,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 91 transitions, 379 flow [2024-01-31 16:04:45,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:04:45,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:04:45,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 186 transitions. [2024-01-31 16:04:45,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5740740740740741 [2024-01-31 16:04:45,988 INFO L175 Difference]: Start difference. First operand has 76 places, 67 transitions, 175 flow. Second operand 4 states and 186 transitions. [2024-01-31 16:04:45,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 91 transitions, 379 flow [2024-01-31 16:04:45,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 91 transitions, 367 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:04:45,992 INFO L231 Difference]: Finished difference. Result has 71 places, 61 transitions, 159 flow [2024-01-31 16:04:45,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=159, PETRI_PLACES=71, PETRI_TRANSITIONS=61} [2024-01-31 16:04:45,993 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, -14 predicate places. [2024-01-31 16:04:45,993 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 61 transitions, 159 flow [2024-01-31 16:04:45,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:45,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:45,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:45,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 16:04:45,994 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:04:45,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:45,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1202307438, now seen corresponding path program 1 times [2024-01-31 16:04:45,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:45,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949069502] [2024-01-31 16:04:45,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:45,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:46,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:46,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:46,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:46,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949069502] [2024-01-31 16:04:46,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949069502] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:46,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:46,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:04:46,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226440912] [2024-01-31 16:04:46,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:46,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:04:46,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:46,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:04:46,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:04:46,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 81 [2024-01-31 16:04:46,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 61 transitions, 159 flow. Second operand has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 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) [2024-01-31 16:04:46,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:46,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 81 [2024-01-31 16:04:46,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:47,134 INFO L124 PetriNetUnfolderBase]: 4209/7774 cut-off events. [2024-01-31 16:04:47,134 INFO L125 PetriNetUnfolderBase]: For 910/918 co-relation queries the response was YES. [2024-01-31 16:04:47,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15512 conditions, 7774 events. 4209/7774 cut-off events. For 910/918 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 61684 event pairs, 3473 based on Foata normal form. 11/5507 useless extension candidates. Maximal degree in co-relation 15497. Up to 6665 conditions per place. [2024-01-31 16:04:47,172 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 49 selfloop transitions, 6 changer transitions 0/70 dead transitions. [2024-01-31 16:04:47,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 70 transitions, 296 flow [2024-01-31 16:04:47,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:04:47,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:04:47,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 143 transitions. [2024-01-31 16:04:47,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44135802469135804 [2024-01-31 16:04:47,174 INFO L175 Difference]: Start difference. First operand has 71 places, 61 transitions, 159 flow. Second operand 4 states and 143 transitions. [2024-01-31 16:04:47,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 70 transitions, 296 flow [2024-01-31 16:04:47,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 70 transitions, 290 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:04:47,176 INFO L231 Difference]: Finished difference. Result has 74 places, 63 transitions, 186 flow [2024-01-31 16:04:47,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=186, PETRI_PLACES=74, PETRI_TRANSITIONS=63} [2024-01-31 16:04:47,177 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, -11 predicate places. [2024-01-31 16:04:47,177 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 63 transitions, 186 flow [2024-01-31 16:04:47,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 5 states have internal predecessors, (118), 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) [2024-01-31 16:04:47,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:47,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:47,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 16:04:47,179 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:04:47,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:47,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1271818779, now seen corresponding path program 1 times [2024-01-31 16:04:47,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:47,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533095457] [2024-01-31 16:04:47,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:47,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:47,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:47,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:47,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:47,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533095457] [2024-01-31 16:04:47,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533095457] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:47,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:47,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:04:47,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78556473] [2024-01-31 16:04:47,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:47,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:04:47,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:47,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:04:47,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:04:47,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:04:47,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 63 transitions, 186 flow. Second operand has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 6 states have internal predecessors, (146), 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) [2024-01-31 16:04:47,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:47,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:04:47,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:48,366 INFO L124 PetriNetUnfolderBase]: 3657/6857 cut-off events. [2024-01-31 16:04:48,366 INFO L125 PetriNetUnfolderBase]: For 797/818 co-relation queries the response was YES. [2024-01-31 16:04:48,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13653 conditions, 6857 events. 3657/6857 cut-off events. For 797/818 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 54095 event pairs, 2086 based on Foata normal form. 36/4788 useless extension candidates. Maximal degree in co-relation 13635. Up to 5606 conditions per place. [2024-01-31 16:04:48,422 INFO L140 encePairwiseOnDemand]: 70/81 looper letters, 63 selfloop transitions, 8 changer transitions 0/86 dead transitions. [2024-01-31 16:04:48,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 86 transitions, 385 flow [2024-01-31 16:04:48,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:04:48,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:04:48,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 191 transitions. [2024-01-31 16:04:48,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47160493827160493 [2024-01-31 16:04:48,424 INFO L175 Difference]: Start difference. First operand has 74 places, 63 transitions, 186 flow. Second operand 5 states and 191 transitions. [2024-01-31 16:04:48,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 86 transitions, 385 flow [2024-01-31 16:04:48,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 86 transitions, 380 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 16:04:48,429 INFO L231 Difference]: Finished difference. Result has 78 places, 65 transitions, 223 flow [2024-01-31 16:04:48,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=223, PETRI_PLACES=78, PETRI_TRANSITIONS=65} [2024-01-31 16:04:48,432 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, -7 predicate places. [2024-01-31 16:04:48,432 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 65 transitions, 223 flow [2024-01-31 16:04:48,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 6 states have internal predecessors, (146), 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) [2024-01-31 16:04:48,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:48,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:48,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-31 16:04:48,434 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:04:48,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:48,434 INFO L85 PathProgramCache]: Analyzing trace with hash 27791324, now seen corresponding path program 1 times [2024-01-31 16:04:48,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:48,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679342037] [2024-01-31 16:04:48,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:48,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:48,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:48,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:48,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:48,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679342037] [2024-01-31 16:04:48,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679342037] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:48,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:48,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:04:48,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980985546] [2024-01-31 16:04:48,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:48,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:04:48,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:48,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:04:48,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:04:48,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 81 [2024-01-31 16:04:48,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 65 transitions, 223 flow. Second operand has 5 states, 5 states have (on average 36.6) internal successors, (183), 5 states have internal predecessors, (183), 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) [2024-01-31 16:04:48,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:48,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 81 [2024-01-31 16:04:48,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:49,298 INFO L124 PetriNetUnfolderBase]: 2176/4160 cut-off events. [2024-01-31 16:04:49,299 INFO L125 PetriNetUnfolderBase]: For 1233/1235 co-relation queries the response was YES. [2024-01-31 16:04:49,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8967 conditions, 4160 events. 2176/4160 cut-off events. For 1233/1235 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 31555 event pairs, 1784 based on Foata normal form. 50/3137 useless extension candidates. Maximal degree in co-relation 8947. Up to 3351 conditions per place. [2024-01-31 16:04:49,327 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 52 selfloop transitions, 7 changer transitions 0/81 dead transitions. [2024-01-31 16:04:49,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 81 transitions, 379 flow [2024-01-31 16:04:49,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:04:49,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:04:49,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 197 transitions. [2024-01-31 16:04:49,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6080246913580247 [2024-01-31 16:04:49,329 INFO L175 Difference]: Start difference. First operand has 78 places, 65 transitions, 223 flow. Second operand 4 states and 197 transitions. [2024-01-31 16:04:49,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 81 transitions, 379 flow [2024-01-31 16:04:49,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 81 transitions, 365 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-01-31 16:04:49,333 INFO L231 Difference]: Finished difference. Result has 79 places, 67 transitions, 241 flow [2024-01-31 16:04:49,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=241, PETRI_PLACES=79, PETRI_TRANSITIONS=67} [2024-01-31 16:04:49,334 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, -6 predicate places. [2024-01-31 16:04:49,334 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 67 transitions, 241 flow [2024-01-31 16:04:49,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.6) internal successors, (183), 5 states have internal predecessors, (183), 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) [2024-01-31 16:04:49,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:49,334 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:49,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-31 16:04:49,335 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:04:49,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:49,335 INFO L85 PathProgramCache]: Analyzing trace with hash 71259441, now seen corresponding path program 1 times [2024-01-31 16:04:49,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:49,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823909822] [2024-01-31 16:04:49,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:49,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:49,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:49,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:49,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:49,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823909822] [2024-01-31 16:04:49,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823909822] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:49,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:49,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:04:49,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252132051] [2024-01-31 16:04:49,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:49,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:04:49,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:49,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:04:49,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:04:49,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:04:49,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 67 transitions, 241 flow. Second operand has 6 states, 6 states have (on average 24.666666666666668) internal successors, (148), 6 states have internal predecessors, (148), 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) [2024-01-31 16:04:49,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:49,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:04:49,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:50,199 INFO L124 PetriNetUnfolderBase]: 3081/5490 cut-off events. [2024-01-31 16:04:50,199 INFO L125 PetriNetUnfolderBase]: For 2510/2518 co-relation queries the response was YES. [2024-01-31 16:04:50,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12686 conditions, 5490 events. 3081/5490 cut-off events. For 2510/2518 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 39824 event pairs, 2549 based on Foata normal form. 17/4466 useless extension candidates. Maximal degree in co-relation 12665. Up to 4760 conditions per place. [2024-01-31 16:04:50,237 INFO L140 encePairwiseOnDemand]: 72/81 looper letters, 61 selfloop transitions, 8 changer transitions 0/84 dead transitions. [2024-01-31 16:04:50,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 84 transitions, 418 flow [2024-01-31 16:04:50,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:04:50,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:04:50,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 185 transitions. [2024-01-31 16:04:50,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4567901234567901 [2024-01-31 16:04:50,240 INFO L175 Difference]: Start difference. First operand has 79 places, 67 transitions, 241 flow. Second operand 5 states and 185 transitions. [2024-01-31 16:04:50,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 84 transitions, 418 flow [2024-01-31 16:04:50,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 84 transitions, 406 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-01-31 16:04:50,245 INFO L231 Difference]: Finished difference. Result has 82 places, 67 transitions, 257 flow [2024-01-31 16:04:50,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=257, PETRI_PLACES=82, PETRI_TRANSITIONS=67} [2024-01-31 16:04:50,246 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, -3 predicate places. [2024-01-31 16:04:50,246 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 67 transitions, 257 flow [2024-01-31 16:04:50,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.666666666666668) internal successors, (148), 6 states have internal predecessors, (148), 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) [2024-01-31 16:04:50,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:50,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:50,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-31 16:04:50,247 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:04:50,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:50,247 INFO L85 PathProgramCache]: Analyzing trace with hash -2112673868, now seen corresponding path program 1 times [2024-01-31 16:04:50,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:50,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705249384] [2024-01-31 16:04:50,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:50,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:50,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:50,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:50,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:50,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705249384] [2024-01-31 16:04:50,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705249384] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:50,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:50,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:04:50,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080296454] [2024-01-31 16:04:50,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:50,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:04:50,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:50,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:04:50,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:04:50,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:04:50,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 67 transitions, 257 flow. Second operand has 6 states, 6 states have (on average 24.5) internal successors, (147), 6 states have internal predecessors, (147), 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) [2024-01-31 16:04:50,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:50,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:04:50,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:51,093 INFO L124 PetriNetUnfolderBase]: 3101/5630 cut-off events. [2024-01-31 16:04:51,093 INFO L125 PetriNetUnfolderBase]: For 2867/2875 co-relation queries the response was YES. [2024-01-31 16:04:51,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13332 conditions, 5630 events. 3101/5630 cut-off events. For 2867/2875 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 41315 event pairs, 2077 based on Foata normal form. 20/4890 useless extension candidates. Maximal degree in co-relation 13310. Up to 4787 conditions per place. [2024-01-31 16:04:51,141 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 64 selfloop transitions, 10 changer transitions 0/89 dead transitions. [2024-01-31 16:04:51,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 89 transitions, 463 flow [2024-01-31 16:04:51,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:04:51,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:04:51,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 186 transitions. [2024-01-31 16:04:51,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45925925925925926 [2024-01-31 16:04:51,144 INFO L175 Difference]: Start difference. First operand has 82 places, 67 transitions, 257 flow. Second operand 5 states and 186 transitions. [2024-01-31 16:04:51,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 89 transitions, 463 flow [2024-01-31 16:04:51,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 89 transitions, 447 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-31 16:04:51,151 INFO L231 Difference]: Finished difference. Result has 84 places, 70 transitions, 285 flow [2024-01-31 16:04:51,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=285, PETRI_PLACES=84, PETRI_TRANSITIONS=70} [2024-01-31 16:04:51,152 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, -1 predicate places. [2024-01-31 16:04:51,152 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 70 transitions, 285 flow [2024-01-31 16:04:51,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.5) internal successors, (147), 6 states have internal predecessors, (147), 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) [2024-01-31 16:04:51,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:51,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:51,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-31 16:04:51,153 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:04:51,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:51,154 INFO L85 PathProgramCache]: Analyzing trace with hash -2086878458, now seen corresponding path program 2 times [2024-01-31 16:04:51,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:51,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895992449] [2024-01-31 16:04:51,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:51,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:51,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:51,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:51,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:51,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895992449] [2024-01-31 16:04:51,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895992449] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:51,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:51,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:04:51,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196111255] [2024-01-31 16:04:51,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:51,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:04:51,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:51,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:04:51,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:04:51,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:04:51,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 70 transitions, 285 flow. Second operand has 6 states, 6 states have (on average 24.5) internal successors, (147), 6 states have internal predecessors, (147), 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) [2024-01-31 16:04:51,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:51,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:04:51,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:52,046 INFO L124 PetriNetUnfolderBase]: 3081/5570 cut-off events. [2024-01-31 16:04:52,046 INFO L125 PetriNetUnfolderBase]: For 3058/3066 co-relation queries the response was YES. [2024-01-31 16:04:52,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13335 conditions, 5570 events. 3081/5570 cut-off events. For 3058/3066 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 40862 event pairs, 2102 based on Foata normal form. 20/4832 useless extension candidates. Maximal degree in co-relation 13311. Up to 4784 conditions per place. [2024-01-31 16:04:52,076 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 63 selfloop transitions, 11 changer transitions 0/89 dead transitions. [2024-01-31 16:04:52,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 89 transitions, 479 flow [2024-01-31 16:04:52,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:04:52,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:04:52,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 185 transitions. [2024-01-31 16:04:52,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4567901234567901 [2024-01-31 16:04:52,079 INFO L175 Difference]: Start difference. First operand has 84 places, 70 transitions, 285 flow. Second operand 5 states and 185 transitions. [2024-01-31 16:04:52,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 89 transitions, 479 flow [2024-01-31 16:04:52,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 89 transitions, 457 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-01-31 16:04:52,085 INFO L231 Difference]: Finished difference. Result has 86 places, 71 transitions, 297 flow [2024-01-31 16:04:52,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=297, PETRI_PLACES=86, PETRI_TRANSITIONS=71} [2024-01-31 16:04:52,086 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 1 predicate places. [2024-01-31 16:04:52,086 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 71 transitions, 297 flow [2024-01-31 16:04:52,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.5) internal successors, (147), 6 states have internal predecessors, (147), 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) [2024-01-31 16:04:52,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:52,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:52,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-31 16:04:52,087 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:04:52,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:52,087 INFO L85 PathProgramCache]: Analyzing trace with hash 544376466, now seen corresponding path program 1 times [2024-01-31 16:04:52,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:52,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443583507] [2024-01-31 16:04:52,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:52,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:52,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:52,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:52,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:52,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443583507] [2024-01-31 16:04:52,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443583507] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:52,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:52,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:04:52,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490515898] [2024-01-31 16:04:52,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:52,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:04:52,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:52,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:04:52,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:04:52,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:04:52,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 71 transitions, 297 flow. Second operand has 6 states, 6 states have (on average 24.5) internal successors, (147), 6 states have internal predecessors, (147), 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) [2024-01-31 16:04:52,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:52,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:04:52,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:52,981 INFO L124 PetriNetUnfolderBase]: 3100/5754 cut-off events. [2024-01-31 16:04:52,982 INFO L125 PetriNetUnfolderBase]: For 3217/3262 co-relation queries the response was YES. [2024-01-31 16:04:52,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13635 conditions, 5754 events. 3100/5754 cut-off events. For 3217/3262 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 44265 event pairs, 2546 based on Foata normal form. 34/4976 useless extension candidates. Maximal degree in co-relation 13610. Up to 4782 conditions per place. [2024-01-31 16:04:53,018 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 69 selfloop transitions, 11 changer transitions 0/96 dead transitions. [2024-01-31 16:04:53,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 96 transitions, 525 flow [2024-01-31 16:04:53,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:04:53,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:04:53,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 188 transitions. [2024-01-31 16:04:53,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4641975308641975 [2024-01-31 16:04:53,020 INFO L175 Difference]: Start difference. First operand has 86 places, 71 transitions, 297 flow. Second operand 5 states and 188 transitions. [2024-01-31 16:04:53,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 96 transitions, 525 flow [2024-01-31 16:04:53,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 96 transitions, 510 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:04:53,027 INFO L231 Difference]: Finished difference. Result has 90 places, 75 transitions, 334 flow [2024-01-31 16:04:53,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=334, PETRI_PLACES=90, PETRI_TRANSITIONS=75} [2024-01-31 16:04:53,028 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 5 predicate places. [2024-01-31 16:04:53,028 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 75 transitions, 334 flow [2024-01-31 16:04:53,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.5) internal successors, (147), 6 states have internal predecessors, (147), 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) [2024-01-31 16:04:53,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:53,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:53,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-31 16:04:53,029 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:04:53,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:53,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1469286874, now seen corresponding path program 2 times [2024-01-31 16:04:53,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:53,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321927978] [2024-01-31 16:04:53,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:53,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:53,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:53,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:53,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:53,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321927978] [2024-01-31 16:04:53,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321927978] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:53,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:53,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:04:53,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498985991] [2024-01-31 16:04:53,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:53,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:04:53,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:53,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:04:53,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:04:53,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:04:53,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 75 transitions, 334 flow. Second operand has 6 states, 6 states have (on average 24.5) internal successors, (147), 6 states have internal predecessors, (147), 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) [2024-01-31 16:04:53,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:53,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:04:53,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:53,917 INFO L124 PetriNetUnfolderBase]: 3080/5738 cut-off events. [2024-01-31 16:04:53,917 INFO L125 PetriNetUnfolderBase]: For 3395/3434 co-relation queries the response was YES. [2024-01-31 16:04:53,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13645 conditions, 5738 events. 3080/5738 cut-off events. For 3395/3434 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 44156 event pairs, 2522 based on Foata normal form. 37/4971 useless extension candidates. Maximal degree in co-relation 13617. Up to 4779 conditions per place. [2024-01-31 16:04:53,949 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 64 selfloop transitions, 11 changer transitions 0/91 dead transitions. [2024-01-31 16:04:53,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 91 transitions, 520 flow [2024-01-31 16:04:53,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:04:53,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:04:53,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 183 transitions. [2024-01-31 16:04:53,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45185185185185184 [2024-01-31 16:04:53,955 INFO L175 Difference]: Start difference. First operand has 90 places, 75 transitions, 334 flow. Second operand 5 states and 183 transitions. [2024-01-31 16:04:53,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 91 transitions, 520 flow [2024-01-31 16:04:53,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 91 transitions, 510 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-01-31 16:04:53,962 INFO L231 Difference]: Finished difference. Result has 94 places, 75 transitions, 351 flow [2024-01-31 16:04:53,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=351, PETRI_PLACES=94, PETRI_TRANSITIONS=75} [2024-01-31 16:04:53,964 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 9 predicate places. [2024-01-31 16:04:53,964 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 75 transitions, 351 flow [2024-01-31 16:04:53,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.5) internal successors, (147), 6 states have internal predecessors, (147), 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) [2024-01-31 16:04:53,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:53,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:53,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-01-31 16:04:53,965 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:04:53,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:53,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1851810030, now seen corresponding path program 1 times [2024-01-31 16:04:53,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:53,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519485780] [2024-01-31 16:04:53,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:53,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:53,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:54,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:54,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:54,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519485780] [2024-01-31 16:04:54,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519485780] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:54,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:54,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:04:54,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231801649] [2024-01-31 16:04:54,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:54,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:04:54,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:54,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:04:54,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:04:54,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 81 [2024-01-31 16:04:54,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 75 transitions, 351 flow. Second operand has 6 states, 6 states have (on average 36.5) internal successors, (219), 6 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:54,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:54,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 81 [2024-01-31 16:04:54,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:54,789 INFO L124 PetriNetUnfolderBase]: 1994/4125 cut-off events. [2024-01-31 16:04:54,789 INFO L125 PetriNetUnfolderBase]: For 2933/2956 co-relation queries the response was YES. [2024-01-31 16:04:54,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9586 conditions, 4125 events. 1994/4125 cut-off events. For 2933/2956 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 32348 event pairs, 1280 based on Foata normal form. 70/3592 useless extension candidates. Maximal degree in co-relation 9556. Up to 2897 conditions per place. [2024-01-31 16:04:54,813 INFO L140 encePairwiseOnDemand]: 74/81 looper letters, 72 selfloop transitions, 12 changer transitions 0/108 dead transitions. [2024-01-31 16:04:54,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 108 transitions, 633 flow [2024-01-31 16:04:54,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:04:54,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:04:54,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 247 transitions. [2024-01-31 16:04:54,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6098765432098765 [2024-01-31 16:04:54,815 INFO L175 Difference]: Start difference. First operand has 94 places, 75 transitions, 351 flow. Second operand 5 states and 247 transitions. [2024-01-31 16:04:54,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 108 transitions, 633 flow [2024-01-31 16:04:54,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 108 transitions, 596 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-01-31 16:04:54,821 INFO L231 Difference]: Finished difference. Result has 96 places, 84 transitions, 414 flow [2024-01-31 16:04:54,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=414, PETRI_PLACES=96, PETRI_TRANSITIONS=84} [2024-01-31 16:04:54,822 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 11 predicate places. [2024-01-31 16:04:54,822 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 84 transitions, 414 flow [2024-01-31 16:04:54,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.5) internal successors, (219), 6 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:54,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:54,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:54,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-01-31 16:04:54,823 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:04:54,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:54,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1359948656, now seen corresponding path program 2 times [2024-01-31 16:04:54,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:54,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411370073] [2024-01-31 16:04:54,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:54,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:54,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:55,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:55,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:55,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411370073] [2024-01-31 16:04:55,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411370073] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:55,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:55,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:04:55,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453156778] [2024-01-31 16:04:55,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:55,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:04:55,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:55,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:04:55,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:04:55,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 81 [2024-01-31 16:04:55,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 84 transitions, 414 flow. Second operand has 6 states, 6 states have (on average 36.5) internal successors, (219), 6 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:55,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:55,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 81 [2024-01-31 16:04:55,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:55,623 INFO L124 PetriNetUnfolderBase]: 1962/4130 cut-off events. [2024-01-31 16:04:55,623 INFO L125 PetriNetUnfolderBase]: For 4142/4168 co-relation queries the response was YES. [2024-01-31 16:04:55,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10063 conditions, 4130 events. 1962/4130 cut-off events. For 4142/4168 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 32833 event pairs, 1138 based on Foata normal form. 42/3566 useless extension candidates. Maximal degree in co-relation 10031. Up to 2889 conditions per place. [2024-01-31 16:04:55,652 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 69 selfloop transitions, 13 changer transitions 0/106 dead transitions. [2024-01-31 16:04:55,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 106 transitions, 643 flow [2024-01-31 16:04:55,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:04:55,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:04:55,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 242 transitions. [2024-01-31 16:04:55,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5975308641975309 [2024-01-31 16:04:55,655 INFO L175 Difference]: Start difference. First operand has 96 places, 84 transitions, 414 flow. Second operand 5 states and 242 transitions. [2024-01-31 16:04:55,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 106 transitions, 643 flow [2024-01-31 16:04:55,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 106 transitions, 643 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-31 16:04:55,663 INFO L231 Difference]: Finished difference. Result has 101 places, 85 transitions, 451 flow [2024-01-31 16:04:55,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=451, PETRI_PLACES=101, PETRI_TRANSITIONS=85} [2024-01-31 16:04:55,663 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 16 predicate places. [2024-01-31 16:04:55,664 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 85 transitions, 451 flow [2024-01-31 16:04:55,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 36.5) internal successors, (219), 6 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:55,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:55,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:55,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-01-31 16:04:55,665 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:04:55,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:55,665 INFO L85 PathProgramCache]: Analyzing trace with hash -21721219, now seen corresponding path program 1 times [2024-01-31 16:04:55,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:55,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350522196] [2024-01-31 16:04:55,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:55,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:55,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:55,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:55,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:55,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350522196] [2024-01-31 16:04:55,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350522196] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:55,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:55,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:04:55,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864775797] [2024-01-31 16:04:55,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:55,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:04:55,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:55,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:04:55,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:04:55,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:04:55,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 85 transitions, 451 flow. Second operand has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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) [2024-01-31 16:04:55,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:55,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:04:55,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:56,606 INFO L124 PetriNetUnfolderBase]: 2776/5624 cut-off events. [2024-01-31 16:04:56,606 INFO L125 PetriNetUnfolderBase]: For 5928/5976 co-relation queries the response was YES. [2024-01-31 16:04:56,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13848 conditions, 5624 events. 2776/5624 cut-off events. For 5928/5976 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 44403 event pairs, 1842 based on Foata normal form. 55/4900 useless extension candidates. Maximal degree in co-relation 13813. Up to 4025 conditions per place. [2024-01-31 16:04:56,635 INFO L140 encePairwiseOnDemand]: 73/81 looper letters, 86 selfloop transitions, 16 changer transitions 0/118 dead transitions. [2024-01-31 16:04:56,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 118 transitions, 750 flow [2024-01-31 16:04:56,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:04:56,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:04:56,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 225 transitions. [2024-01-31 16:04:56,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-01-31 16:04:56,637 INFO L175 Difference]: Start difference. First operand has 101 places, 85 transitions, 451 flow. Second operand 6 states and 225 transitions. [2024-01-31 16:04:56,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 118 transitions, 750 flow [2024-01-31 16:04:56,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 118 transitions, 742 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 16:04:56,647 INFO L231 Difference]: Finished difference. Result has 107 places, 87 transitions, 503 flow [2024-01-31 16:04:56,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=503, PETRI_PLACES=107, PETRI_TRANSITIONS=87} [2024-01-31 16:04:56,648 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 22 predicate places. [2024-01-31 16:04:56,648 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 87 transitions, 503 flow [2024-01-31 16:04:56,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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) [2024-01-31 16:04:56,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:56,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:56,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-01-31 16:04:56,649 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:04:56,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:56,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1547080713, now seen corresponding path program 1 times [2024-01-31 16:04:56,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:56,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352022942] [2024-01-31 16:04:56,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:56,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:56,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:56,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:56,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:56,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352022942] [2024-01-31 16:04:56,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352022942] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:56,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:56,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:04:56,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032897135] [2024-01-31 16:04:56,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:56,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:04:56,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:56,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:04:56,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:04:56,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:04:56,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 87 transitions, 503 flow. Second operand has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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) [2024-01-31 16:04:56,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:56,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:04:56,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:57,641 INFO L124 PetriNetUnfolderBase]: 2835/5697 cut-off events. [2024-01-31 16:04:57,641 INFO L125 PetriNetUnfolderBase]: For 7062/7076 co-relation queries the response was YES. [2024-01-31 16:04:57,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14485 conditions, 5697 events. 2835/5697 cut-off events. For 7062/7076 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 45041 event pairs, 1716 based on Foata normal form. 26/4914 useless extension candidates. Maximal degree in co-relation 14447. Up to 4058 conditions per place. [2024-01-31 16:04:57,670 INFO L140 encePairwiseOnDemand]: 70/81 looper letters, 89 selfloop transitions, 21 changer transitions 0/127 dead transitions. [2024-01-31 16:04:57,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 127 transitions, 858 flow [2024-01-31 16:04:57,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:04:57,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:04:57,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 232 transitions. [2024-01-31 16:04:57,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4773662551440329 [2024-01-31 16:04:57,672 INFO L175 Difference]: Start difference. First operand has 107 places, 87 transitions, 503 flow. Second operand 6 states and 232 transitions. [2024-01-31 16:04:57,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 127 transitions, 858 flow [2024-01-31 16:04:57,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 127 transitions, 824 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-31 16:04:57,680 INFO L231 Difference]: Finished difference. Result has 110 places, 94 transitions, 578 flow [2024-01-31 16:04:57,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=578, PETRI_PLACES=110, PETRI_TRANSITIONS=94} [2024-01-31 16:04:57,681 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 25 predicate places. [2024-01-31 16:04:57,681 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 94 transitions, 578 flow [2024-01-31 16:04:57,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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) [2024-01-31 16:04:57,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:57,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:57,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-01-31 16:04:57,681 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:04:57,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:57,682 INFO L85 PathProgramCache]: Analyzing trace with hash -840212971, now seen corresponding path program 2 times [2024-01-31 16:04:57,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:57,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557198377] [2024-01-31 16:04:57,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:57,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:57,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:57,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:57,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:57,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557198377] [2024-01-31 16:04:57,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557198377] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:57,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:57,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:04:57,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657010456] [2024-01-31 16:04:57,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:57,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:04:57,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:57,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:04:57,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:04:57,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:04:57,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 94 transitions, 578 flow. Second operand has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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) [2024-01-31 16:04:57,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:57,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:04:57,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:58,789 INFO L124 PetriNetUnfolderBase]: 3594/6973 cut-off events. [2024-01-31 16:04:58,789 INFO L125 PetriNetUnfolderBase]: For 9855/10015 co-relation queries the response was YES. [2024-01-31 16:04:58,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18732 conditions, 6973 events. 3594/6973 cut-off events. For 9855/10015 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 53558 event pairs, 1950 based on Foata normal form. 100/6181 useless extension candidates. Maximal degree in co-relation 18692. Up to 4813 conditions per place. [2024-01-31 16:04:58,831 INFO L140 encePairwiseOnDemand]: 73/81 looper letters, 91 selfloop transitions, 22 changer transitions 0/132 dead transitions. [2024-01-31 16:04:58,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 132 transitions, 956 flow [2024-01-31 16:04:58,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:04:58,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:04:58,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 227 transitions. [2024-01-31 16:04:58,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4670781893004115 [2024-01-31 16:04:58,833 INFO L175 Difference]: Start difference. First operand has 110 places, 94 transitions, 578 flow. Second operand 6 states and 227 transitions. [2024-01-31 16:04:58,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 132 transitions, 956 flow [2024-01-31 16:04:58,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 132 transitions, 912 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-31 16:04:58,847 INFO L231 Difference]: Finished difference. Result has 112 places, 99 transitions, 633 flow [2024-01-31 16:04:58,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=633, PETRI_PLACES=112, PETRI_TRANSITIONS=99} [2024-01-31 16:04:58,848 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 27 predicate places. [2024-01-31 16:04:58,848 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 99 transitions, 633 flow [2024-01-31 16:04:58,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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) [2024-01-31 16:04:58,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:58,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:58,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-01-31 16:04:58,849 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:04:58,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:58,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1085432453, now seen corresponding path program 2 times [2024-01-31 16:04:58,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:58,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990509283] [2024-01-31 16:04:58,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:58,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:58,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:59,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:59,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:59,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990509283] [2024-01-31 16:04:59,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990509283] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:59,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:59,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:04:59,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476337355] [2024-01-31 16:04:59,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:59,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:04:59,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:59,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:04:59,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:04:59,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:04:59,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 99 transitions, 633 flow. Second operand has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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) [2024-01-31 16:04:59,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:59,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:04:59,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:59,716 INFO L124 PetriNetUnfolderBase]: 2825/5691 cut-off events. [2024-01-31 16:04:59,717 INFO L125 PetriNetUnfolderBase]: For 8364/8384 co-relation queries the response was YES. [2024-01-31 16:04:59,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15294 conditions, 5691 events. 2825/5691 cut-off events. For 8364/8384 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 45049 event pairs, 1734 based on Foata normal form. 86/4966 useless extension candidates. Maximal degree in co-relation 15253. Up to 4079 conditions per place. [2024-01-31 16:04:59,748 INFO L140 encePairwiseOnDemand]: 73/81 looper letters, 80 selfloop transitions, 25 changer transitions 0/122 dead transitions. [2024-01-31 16:04:59,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 122 transitions, 921 flow [2024-01-31 16:04:59,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:04:59,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:04:59,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 217 transitions. [2024-01-31 16:04:59,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44650205761316875 [2024-01-31 16:04:59,750 INFO L175 Difference]: Start difference. First operand has 112 places, 99 transitions, 633 flow. Second operand 6 states and 217 transitions. [2024-01-31 16:04:59,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 122 transitions, 921 flow [2024-01-31 16:04:59,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 122 transitions, 900 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:04:59,759 INFO L231 Difference]: Finished difference. Result has 116 places, 100 transitions, 685 flow [2024-01-31 16:04:59,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=613, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=685, PETRI_PLACES=116, PETRI_TRANSITIONS=100} [2024-01-31 16:04:59,760 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 31 predicate places. [2024-01-31 16:04:59,760 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 100 transitions, 685 flow [2024-01-31 16:04:59,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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) [2024-01-31 16:04:59,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:59,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:59,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-01-31 16:04:59,761 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:04:59,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:59,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1571138973, now seen corresponding path program 3 times [2024-01-31 16:04:59,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:59,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283573234] [2024-01-31 16:04:59,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:59,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:59,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:59,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:59,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:59,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283573234] [2024-01-31 16:04:59,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283573234] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:59,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:59,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:04:59,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791175114] [2024-01-31 16:04:59,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:59,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:04:59,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:59,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:04:59,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:05:00,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:05:00,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 100 transitions, 685 flow. Second operand has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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) [2024-01-31 16:05:00,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:00,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:05:00,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:00,813 INFO L124 PetriNetUnfolderBase]: 3371/6616 cut-off events. [2024-01-31 16:05:00,813 INFO L125 PetriNetUnfolderBase]: For 11944/12102 co-relation queries the response was YES. [2024-01-31 16:05:00,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18268 conditions, 6616 events. 3371/6616 cut-off events. For 11944/12102 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 51060 event pairs, 1862 based on Foata normal form. 80/5816 useless extension candidates. Maximal degree in co-relation 18226. Up to 4798 conditions per place. [2024-01-31 16:05:00,859 INFO L140 encePairwiseOnDemand]: 70/81 looper letters, 80 selfloop transitions, 29 changer transitions 0/128 dead transitions. [2024-01-31 16:05:00,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 128 transitions, 987 flow [2024-01-31 16:05:00,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:05:00,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:05:00,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 222 transitions. [2024-01-31 16:05:00,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4567901234567901 [2024-01-31 16:05:00,861 INFO L175 Difference]: Start difference. First operand has 116 places, 100 transitions, 685 flow. Second operand 6 states and 222 transitions. [2024-01-31 16:05:00,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 128 transitions, 987 flow [2024-01-31 16:05:00,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 128 transitions, 937 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-31 16:05:00,877 INFO L231 Difference]: Finished difference. Result has 119 places, 105 transitions, 754 flow [2024-01-31 16:05:00,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=639, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=754, PETRI_PLACES=119, PETRI_TRANSITIONS=105} [2024-01-31 16:05:00,878 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 34 predicate places. [2024-01-31 16:05:00,878 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 105 transitions, 754 flow [2024-01-31 16:05:00,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 7 states have internal predecessors, (172), 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) [2024-01-31 16:05:00,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:00,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:00,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-01-31 16:05:00,879 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:05:00,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:00,879 INFO L85 PathProgramCache]: Analyzing trace with hash 739754202, now seen corresponding path program 1 times [2024-01-31 16:05:00,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:00,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202087657] [2024-01-31 16:05:00,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:00,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:00,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:01,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:01,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:01,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202087657] [2024-01-31 16:05:01,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202087657] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:01,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:01,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:05:01,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99697086] [2024-01-31 16:05:01,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:01,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:05:01,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:01,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:05:01,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:05:01,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:05:01,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 105 transitions, 754 flow. Second operand has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 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) [2024-01-31 16:05:01,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:01,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:05:01,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:01,807 INFO L124 PetriNetUnfolderBase]: 2577/5028 cut-off events. [2024-01-31 16:05:01,808 INFO L125 PetriNetUnfolderBase]: For 10924/11068 co-relation queries the response was YES. [2024-01-31 16:05:01,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14695 conditions, 5028 events. 2577/5028 cut-off events. For 10924/11068 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 37409 event pairs, 1155 based on Foata normal form. 106/4499 useless extension candidates. Maximal degree in co-relation 14651. Up to 3252 conditions per place. [2024-01-31 16:05:01,838 INFO L140 encePairwiseOnDemand]: 71/81 looper letters, 94 selfloop transitions, 28 changer transitions 0/141 dead transitions. [2024-01-31 16:05:01,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 141 transitions, 1131 flow [2024-01-31 16:05:01,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:05:01,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:05:01,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 233 transitions. [2024-01-31 16:05:01,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4794238683127572 [2024-01-31 16:05:01,839 INFO L175 Difference]: Start difference. First operand has 119 places, 105 transitions, 754 flow. Second operand 6 states and 233 transitions. [2024-01-31 16:05:01,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 141 transitions, 1131 flow [2024-01-31 16:05:01,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 141 transitions, 1072 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-01-31 16:05:01,851 INFO L231 Difference]: Finished difference. Result has 121 places, 109 transitions, 804 flow [2024-01-31 16:05:01,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=695, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=804, PETRI_PLACES=121, PETRI_TRANSITIONS=109} [2024-01-31 16:05:01,852 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 36 predicate places. [2024-01-31 16:05:01,852 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 109 transitions, 804 flow [2024-01-31 16:05:01,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 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) [2024-01-31 16:05:01,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:01,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:01,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-01-31 16:05:01,853 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:05:01,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:01,853 INFO L85 PathProgramCache]: Analyzing trace with hash -142340441, now seen corresponding path program 1 times [2024-01-31 16:05:01,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:01,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448359360] [2024-01-31 16:05:01,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:01,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:01,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:02,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:02,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:02,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448359360] [2024-01-31 16:05:02,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448359360] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:02,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:02,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:05:02,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392459374] [2024-01-31 16:05:02,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:02,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:05:02,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:02,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:05:02,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:05:02,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 81 [2024-01-31 16:05:02,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 109 transitions, 804 flow. Second operand has 7 states, 7 states have (on average 36.57142857142857) internal successors, (256), 7 states have internal predecessors, (256), 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) [2024-01-31 16:05:02,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:02,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 81 [2024-01-31 16:05:02,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:02,593 INFO L124 PetriNetUnfolderBase]: 2021/4167 cut-off events. [2024-01-31 16:05:02,594 INFO L125 PetriNetUnfolderBase]: For 11713/11867 co-relation queries the response was YES. [2024-01-31 16:05:02,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12786 conditions, 4167 events. 2021/4167 cut-off events. For 11713/11867 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 32055 event pairs, 905 based on Foata normal form. 46/3775 useless extension candidates. Maximal degree in co-relation 12741. Up to 2617 conditions per place. [2024-01-31 16:05:02,619 INFO L140 encePairwiseOnDemand]: 74/81 looper letters, 84 selfloop transitions, 29 changer transitions 0/143 dead transitions. [2024-01-31 16:05:02,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 143 transitions, 1180 flow [2024-01-31 16:05:02,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:05:02,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:05:02,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 292 transitions. [2024-01-31 16:05:02,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6008230452674898 [2024-01-31 16:05:02,621 INFO L175 Difference]: Start difference. First operand has 121 places, 109 transitions, 804 flow. Second operand 6 states and 292 transitions. [2024-01-31 16:05:02,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 143 transitions, 1180 flow [2024-01-31 16:05:02,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 143 transitions, 1128 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-01-31 16:05:02,643 INFO L231 Difference]: Finished difference. Result has 123 places, 111 transitions, 840 flow [2024-01-31 16:05:02,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=762, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=840, PETRI_PLACES=123, PETRI_TRANSITIONS=111} [2024-01-31 16:05:02,644 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 38 predicate places. [2024-01-31 16:05:02,644 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 111 transitions, 840 flow [2024-01-31 16:05:02,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 36.57142857142857) internal successors, (256), 7 states have internal predecessors, (256), 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) [2024-01-31 16:05:02,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:02,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:02,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-01-31 16:05:02,645 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:05:02,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:02,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1668071639, now seen corresponding path program 2 times [2024-01-31 16:05:02,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:02,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527713699] [2024-01-31 16:05:02,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:02,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:02,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:02,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:02,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:02,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527713699] [2024-01-31 16:05:02,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527713699] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:02,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:02,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:05:02,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498914722] [2024-01-31 16:05:02,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:02,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:05:02,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:02,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:05:02,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:05:02,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 81 [2024-01-31 16:05:02,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 111 transitions, 840 flow. Second operand has 7 states, 7 states have (on average 36.57142857142857) internal successors, (256), 7 states have internal predecessors, (256), 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) [2024-01-31 16:05:02,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:02,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 81 [2024-01-31 16:05:02,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:03,464 INFO L124 PetriNetUnfolderBase]: 1989/4119 cut-off events. [2024-01-31 16:05:03,464 INFO L125 PetriNetUnfolderBase]: For 11359/11509 co-relation queries the response was YES. [2024-01-31 16:05:03,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12508 conditions, 4119 events. 1989/4119 cut-off events. For 11359/11509 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 31718 event pairs, 897 based on Foata normal form. 46/3727 useless extension candidates. Maximal degree in co-relation 12463. Up to 2609 conditions per place. [2024-01-31 16:05:03,486 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 77 selfloop transitions, 27 changer transitions 0/134 dead transitions. [2024-01-31 16:05:03,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 134 transitions, 1128 flow [2024-01-31 16:05:03,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:05:03,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:05:03,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 246 transitions. [2024-01-31 16:05:03,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6074074074074074 [2024-01-31 16:05:03,487 INFO L175 Difference]: Start difference. First operand has 123 places, 111 transitions, 840 flow. Second operand 5 states and 246 transitions. [2024-01-31 16:05:03,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 134 transitions, 1128 flow [2024-01-31 16:05:03,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 134 transitions, 1065 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-01-31 16:05:03,499 INFO L231 Difference]: Finished difference. Result has 124 places, 111 transitions, 843 flow [2024-01-31 16:05:03,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=777, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=843, PETRI_PLACES=124, PETRI_TRANSITIONS=111} [2024-01-31 16:05:03,500 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 39 predicate places. [2024-01-31 16:05:03,500 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 111 transitions, 843 flow [2024-01-31 16:05:03,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 36.57142857142857) internal successors, (256), 7 states have internal predecessors, (256), 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) [2024-01-31 16:05:03,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:03,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:03,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-01-31 16:05:03,501 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:05:03,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:03,501 INFO L85 PathProgramCache]: Analyzing trace with hash -958070145, now seen corresponding path program 1 times [2024-01-31 16:05:03,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:03,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443555597] [2024-01-31 16:05:03,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:03,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:03,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:03,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:03,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:03,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443555597] [2024-01-31 16:05:03,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443555597] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:03,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:03,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:05:03,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618491315] [2024-01-31 16:05:03,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:03,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:05:03,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:03,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:05:03,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:05:03,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 81 [2024-01-31 16:05:03,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 111 transitions, 843 flow. Second operand has 7 states, 7 states have (on average 36.57142857142857) internal successors, (256), 7 states have internal predecessors, (256), 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) [2024-01-31 16:05:03,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:03,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 81 [2024-01-31 16:05:03,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:04,310 INFO L124 PetriNetUnfolderBase]: 1811/3688 cut-off events. [2024-01-31 16:05:04,310 INFO L125 PetriNetUnfolderBase]: For 12127/12261 co-relation queries the response was YES. [2024-01-31 16:05:04,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11571 conditions, 3688 events. 1811/3688 cut-off events. For 12127/12261 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 26963 event pairs, 941 based on Foata normal form. 86/3430 useless extension candidates. Maximal degree in co-relation 11525. Up to 2358 conditions per place. [2024-01-31 16:05:04,332 INFO L140 encePairwiseOnDemand]: 73/81 looper letters, 88 selfloop transitions, 27 changer transitions 0/145 dead transitions. [2024-01-31 16:05:04,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 145 transitions, 1211 flow [2024-01-31 16:05:04,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:05:04,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:05:04,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 292 transitions. [2024-01-31 16:05:04,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6008230452674898 [2024-01-31 16:05:04,334 INFO L175 Difference]: Start difference. First operand has 124 places, 111 transitions, 843 flow. Second operand 6 states and 292 transitions. [2024-01-31 16:05:04,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 145 transitions, 1211 flow [2024-01-31 16:05:04,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 145 transitions, 1149 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-01-31 16:05:04,357 INFO L231 Difference]: Finished difference. Result has 126 places, 115 transitions, 884 flow [2024-01-31 16:05:04,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=783, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=884, PETRI_PLACES=126, PETRI_TRANSITIONS=115} [2024-01-31 16:05:04,358 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 41 predicate places. [2024-01-31 16:05:04,358 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 115 transitions, 884 flow [2024-01-31 16:05:04,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 36.57142857142857) internal successors, (256), 7 states have internal predecessors, (256), 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) [2024-01-31 16:05:04,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:04,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:04,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-01-31 16:05:04,359 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:05:04,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:04,359 INFO L85 PathProgramCache]: Analyzing trace with hash -188279221, now seen corresponding path program 2 times [2024-01-31 16:05:04,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:04,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409766282] [2024-01-31 16:05:04,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:04,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:04,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:04,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:04,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:04,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409766282] [2024-01-31 16:05:04,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409766282] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:04,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:04,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:05:04,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003783873] [2024-01-31 16:05:04,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:04,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:05:04,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:04,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:05:04,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:05:04,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 81 [2024-01-31 16:05:04,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 115 transitions, 884 flow. Second operand has 7 states, 7 states have (on average 36.57142857142857) internal successors, (256), 7 states have internal predecessors, (256), 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) [2024-01-31 16:05:04,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:04,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 81 [2024-01-31 16:05:04,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:05,199 INFO L124 PetriNetUnfolderBase]: 1872/3736 cut-off events. [2024-01-31 16:05:05,199 INFO L125 PetriNetUnfolderBase]: For 12441/12579 co-relation queries the response was YES. [2024-01-31 16:05:05,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12203 conditions, 3736 events. 1872/3736 cut-off events. For 12441/12579 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 27067 event pairs, 795 based on Foata normal form. 48/3463 useless extension candidates. Maximal degree in co-relation 12156. Up to 2347 conditions per place. [2024-01-31 16:05:05,222 INFO L140 encePairwiseOnDemand]: 74/81 looper letters, 88 selfloop transitions, 31 changer transitions 0/149 dead transitions. [2024-01-31 16:05:05,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 149 transitions, 1276 flow [2024-01-31 16:05:05,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:05:05,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:05:05,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 292 transitions. [2024-01-31 16:05:05,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6008230452674898 [2024-01-31 16:05:05,224 INFO L175 Difference]: Start difference. First operand has 126 places, 115 transitions, 884 flow. Second operand 6 states and 292 transitions. [2024-01-31 16:05:05,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 149 transitions, 1276 flow [2024-01-31 16:05:05,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 149 transitions, 1256 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-01-31 16:05:05,289 INFO L231 Difference]: Finished difference. Result has 130 places, 117 transitions, 948 flow [2024-01-31 16:05:05,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=864, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=948, PETRI_PLACES=130, PETRI_TRANSITIONS=117} [2024-01-31 16:05:05,289 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 45 predicate places. [2024-01-31 16:05:05,289 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 117 transitions, 948 flow [2024-01-31 16:05:05,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 36.57142857142857) internal successors, (256), 7 states have internal predecessors, (256), 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) [2024-01-31 16:05:05,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:05,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:05,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-01-31 16:05:05,290 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:05:05,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:05,291 INFO L85 PathProgramCache]: Analyzing trace with hash -2107046627, now seen corresponding path program 3 times [2024-01-31 16:05:05,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:05,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624263927] [2024-01-31 16:05:05,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:05,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:05,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:05,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:05,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:05,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624263927] [2024-01-31 16:05:05,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624263927] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:05,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:05,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:05:05,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874263866] [2024-01-31 16:05:05,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:05,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:05:05,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:05,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:05:05,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:05:05,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 81 [2024-01-31 16:05:05,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 117 transitions, 948 flow. Second operand has 7 states, 7 states have (on average 36.57142857142857) internal successors, (256), 7 states have internal predecessors, (256), 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) [2024-01-31 16:05:05,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:05,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 81 [2024-01-31 16:05:05,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:06,083 INFO L124 PetriNetUnfolderBase]: 1840/3734 cut-off events. [2024-01-31 16:05:06,084 INFO L125 PetriNetUnfolderBase]: For 13757/13893 co-relation queries the response was YES. [2024-01-31 16:05:06,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12285 conditions, 3734 events. 1840/3734 cut-off events. For 13757/13893 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 27217 event pairs, 1013 based on Foata normal form. 54/3474 useless extension candidates. Maximal degree in co-relation 12236. Up to 2815 conditions per place. [2024-01-31 16:05:06,108 INFO L140 encePairwiseOnDemand]: 74/81 looper letters, 88 selfloop transitions, 17 changer transitions 0/135 dead transitions. [2024-01-31 16:05:06,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 135 transitions, 1216 flow [2024-01-31 16:05:06,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:05:06,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:05:06,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 274 transitions. [2024-01-31 16:05:06,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5637860082304527 [2024-01-31 16:05:06,113 INFO L175 Difference]: Start difference. First operand has 130 places, 117 transitions, 948 flow. Second operand 6 states and 274 transitions. [2024-01-31 16:05:06,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 135 transitions, 1216 flow [2024-01-31 16:05:06,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 135 transitions, 1149 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-01-31 16:05:06,138 INFO L231 Difference]: Finished difference. Result has 132 places, 117 transitions, 921 flow [2024-01-31 16:05:06,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=881, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=921, PETRI_PLACES=132, PETRI_TRANSITIONS=117} [2024-01-31 16:05:06,139 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 47 predicate places. [2024-01-31 16:05:06,139 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 117 transitions, 921 flow [2024-01-31 16:05:06,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 36.57142857142857) internal successors, (256), 7 states have internal predecessors, (256), 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) [2024-01-31 16:05:06,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:06,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:06,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-01-31 16:05:06,140 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:05:06,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:06,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1738737322, now seen corresponding path program 2 times [2024-01-31 16:05:06,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:06,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730640090] [2024-01-31 16:05:06,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:06,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:06,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:06,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:06,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:06,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730640090] [2024-01-31 16:05:06,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730640090] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:06,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:06,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:05:06,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227404452] [2024-01-31 16:05:06,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:06,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:05:06,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:06,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:05:06,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:05:06,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:05:06,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 117 transitions, 921 flow. Second operand has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 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) [2024-01-31 16:05:06,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:06,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:05:06,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:07,120 INFO L124 PetriNetUnfolderBase]: 2485/4704 cut-off events. [2024-01-31 16:05:07,120 INFO L125 PetriNetUnfolderBase]: For 14413/14530 co-relation queries the response was YES. [2024-01-31 16:05:07,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15168 conditions, 4704 events. 2485/4704 cut-off events. For 14413/14530 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 33063 event pairs, 899 based on Foata normal form. 74/4415 useless extension candidates. Maximal degree in co-relation 15118. Up to 3089 conditions per place. [2024-01-31 16:05:07,150 INFO L140 encePairwiseOnDemand]: 70/81 looper letters, 100 selfloop transitions, 37 changer transitions 0/156 dead transitions. [2024-01-31 16:05:07,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 156 transitions, 1329 flow [2024-01-31 16:05:07,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:05:07,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:05:07,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 236 transitions. [2024-01-31 16:05:07,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48559670781893005 [2024-01-31 16:05:07,152 INFO L175 Difference]: Start difference. First operand has 132 places, 117 transitions, 921 flow. Second operand 6 states and 236 transitions. [2024-01-31 16:05:07,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 156 transitions, 1329 flow [2024-01-31 16:05:07,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 156 transitions, 1286 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-01-31 16:05:07,177 INFO L231 Difference]: Finished difference. Result has 135 places, 122 transitions, 1018 flow [2024-01-31 16:05:07,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=878, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1018, PETRI_PLACES=135, PETRI_TRANSITIONS=122} [2024-01-31 16:05:07,178 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 50 predicate places. [2024-01-31 16:05:07,178 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 122 transitions, 1018 flow [2024-01-31 16:05:07,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 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) [2024-01-31 16:05:07,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:07,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:07,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-01-31 16:05:07,179 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:05:07,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:07,179 INFO L85 PathProgramCache]: Analyzing trace with hash -2130068682, now seen corresponding path program 1 times [2024-01-31 16:05:07,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:07,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594733538] [2024-01-31 16:05:07,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:07,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:07,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:07,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:07,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:07,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594733538] [2024-01-31 16:05:07,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594733538] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:07,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:07,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:05:07,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485456744] [2024-01-31 16:05:07,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:07,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:05:07,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:07,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:05:07,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:05:07,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:05:07,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 122 transitions, 1018 flow. Second operand has 8 states, 8 states have (on average 24.875) internal successors, (199), 8 states have internal predecessors, (199), 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) [2024-01-31 16:05:07,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:07,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:05:07,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:08,103 INFO L124 PetriNetUnfolderBase]: 2599/4961 cut-off events. [2024-01-31 16:05:08,104 INFO L125 PetriNetUnfolderBase]: For 17027/17271 co-relation queries the response was YES. [2024-01-31 16:05:08,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16633 conditions, 4961 events. 2599/4961 cut-off events. For 17027/17271 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 34627 event pairs, 985 based on Foata normal form. 76/4617 useless extension candidates. Maximal degree in co-relation 16582. Up to 3279 conditions per place. [2024-01-31 16:05:08,136 INFO L140 encePairwiseOnDemand]: 73/81 looper letters, 102 selfloop transitions, 31 changer transitions 0/154 dead transitions. [2024-01-31 16:05:08,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 154 transitions, 1385 flow [2024-01-31 16:05:08,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:05:08,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:05:08,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 229 transitions. [2024-01-31 16:05:08,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4711934156378601 [2024-01-31 16:05:08,137 INFO L175 Difference]: Start difference. First operand has 135 places, 122 transitions, 1018 flow. Second operand 6 states and 229 transitions. [2024-01-31 16:05:08,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 154 transitions, 1385 flow [2024-01-31 16:05:08,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 154 transitions, 1318 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-01-31 16:05:08,166 INFO L231 Difference]: Finished difference. Result has 137 places, 122 transitions, 1035 flow [2024-01-31 16:05:08,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=959, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1035, PETRI_PLACES=137, PETRI_TRANSITIONS=122} [2024-01-31 16:05:08,167 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 52 predicate places. [2024-01-31 16:05:08,167 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 122 transitions, 1035 flow [2024-01-31 16:05:08,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.875) internal successors, (199), 8 states have internal predecessors, (199), 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) [2024-01-31 16:05:08,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:08,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:08,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-01-31 16:05:08,167 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:05:08,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:08,168 INFO L85 PathProgramCache]: Analyzing trace with hash 375910182, now seen corresponding path program 1 times [2024-01-31 16:05:08,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:08,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151548907] [2024-01-31 16:05:08,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:08,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:08,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:08,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:08,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:08,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151548907] [2024-01-31 16:05:08,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151548907] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:08,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:08,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:05:08,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043103545] [2024-01-31 16:05:08,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:08,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:05:08,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:08,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:05:08,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:05:08,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:05:08,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 122 transitions, 1035 flow. Second operand has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 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) [2024-01-31 16:05:08,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:08,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:05:08,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:09,132 INFO L124 PetriNetUnfolderBase]: 2559/4921 cut-off events. [2024-01-31 16:05:09,132 INFO L125 PetriNetUnfolderBase]: For 18053/18193 co-relation queries the response was YES. [2024-01-31 16:05:09,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16349 conditions, 4921 events. 2559/4921 cut-off events. For 18053/18193 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 34382 event pairs, 1197 based on Foata normal form. 85/4574 useless extension candidates. Maximal degree in co-relation 16298. Up to 3107 conditions per place. [2024-01-31 16:05:09,174 INFO L140 encePairwiseOnDemand]: 72/81 looper letters, 108 selfloop transitions, 32 changer transitions 0/161 dead transitions. [2024-01-31 16:05:09,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 161 transitions, 1444 flow [2024-01-31 16:05:09,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:05:09,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:05:09,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 262 transitions. [2024-01-31 16:05:09,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4620811287477954 [2024-01-31 16:05:09,175 INFO L175 Difference]: Start difference. First operand has 137 places, 122 transitions, 1035 flow. Second operand 7 states and 262 transitions. [2024-01-31 16:05:09,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 161 transitions, 1444 flow [2024-01-31 16:05:09,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 161 transitions, 1382 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-01-31 16:05:09,204 INFO L231 Difference]: Finished difference. Result has 139 places, 122 transitions, 1045 flow [2024-01-31 16:05:09,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=973, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1045, PETRI_PLACES=139, PETRI_TRANSITIONS=122} [2024-01-31 16:05:09,205 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 54 predicate places. [2024-01-31 16:05:09,205 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 122 transitions, 1045 flow [2024-01-31 16:05:09,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 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) [2024-01-31 16:05:09,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:09,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:09,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-01-31 16:05:09,206 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting P1Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:05:09,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:09,206 INFO L85 PathProgramCache]: Analyzing trace with hash 2020564994, now seen corresponding path program 1 times [2024-01-31 16:05:09,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:09,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282133891] [2024-01-31 16:05:09,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:09,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:09,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:09,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:09,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:09,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282133891] [2024-01-31 16:05:09,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282133891] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:09,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:09,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:05:09,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581779757] [2024-01-31 16:05:09,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:09,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:05:09,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:09,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:05:09,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:05:09,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:05:09,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 122 transitions, 1045 flow. Second operand has 8 states, 8 states have (on average 24.875) internal successors, (199), 8 states have internal predecessors, (199), 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) [2024-01-31 16:05:09,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:09,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:05:09,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:10,191 INFO L124 PetriNetUnfolderBase]: 2425/4540 cut-off events. [2024-01-31 16:05:10,192 INFO L125 PetriNetUnfolderBase]: For 16989/17115 co-relation queries the response was YES. [2024-01-31 16:05:10,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15630 conditions, 4540 events. 2425/4540 cut-off events. For 16989/17115 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 31349 event pairs, 1079 based on Foata normal form. 41/4245 useless extension candidates. Maximal degree in co-relation 15578. Up to 2895 conditions per place. [2024-01-31 16:05:10,220 INFO L140 encePairwiseOnDemand]: 66/81 looper letters, 113 selfloop transitions, 40 changer transitions 0/172 dead transitions. [2024-01-31 16:05:10,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 172 transitions, 1533 flow [2024-01-31 16:05:10,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:05:10,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:05:10,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 275 transitions. [2024-01-31 16:05:10,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48500881834215165 [2024-01-31 16:05:10,222 INFO L175 Difference]: Start difference. First operand has 139 places, 122 transitions, 1045 flow. Second operand 7 states and 275 transitions. [2024-01-31 16:05:10,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 172 transitions, 1533 flow [2024-01-31 16:05:10,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 172 transitions, 1465 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-31 16:05:10,248 INFO L231 Difference]: Finished difference. Result has 141 places, 127 transitions, 1115 flow [2024-01-31 16:05:10,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=981, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1115, PETRI_PLACES=141, PETRI_TRANSITIONS=127} [2024-01-31 16:05:10,249 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 56 predicate places. [2024-01-31 16:05:10,249 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 127 transitions, 1115 flow [2024-01-31 16:05:10,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.875) internal successors, (199), 8 states have internal predecessors, (199), 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) [2024-01-31 16:05:10,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:10,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:10,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-01-31 16:05:10,250 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:05:10,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:10,250 INFO L85 PathProgramCache]: Analyzing trace with hash 250317050, now seen corresponding path program 2 times [2024-01-31 16:05:10,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:10,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370578258] [2024-01-31 16:05:10,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:10,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:10,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:10,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:10,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:10,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370578258] [2024-01-31 16:05:10,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370578258] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:10,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:10,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:05:10,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933726779] [2024-01-31 16:05:10,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:10,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:05:10,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:10,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:05:10,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:05:10,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:05:10,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 127 transitions, 1115 flow. Second operand has 8 states, 8 states have (on average 24.875) internal successors, (199), 8 states have internal predecessors, (199), 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) [2024-01-31 16:05:10,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:10,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:05:10,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:11,307 INFO L124 PetriNetUnfolderBase]: 2804/5292 cut-off events. [2024-01-31 16:05:11,308 INFO L125 PetriNetUnfolderBase]: For 19785/20020 co-relation queries the response was YES. [2024-01-31 16:05:11,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18590 conditions, 5292 events. 2804/5292 cut-off events. For 19785/20020 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 36765 event pairs, 988 based on Foata normal form. 112/4972 useless extension candidates. Maximal degree in co-relation 18536. Up to 3469 conditions per place. [2024-01-31 16:05:11,350 INFO L140 encePairwiseOnDemand]: 73/81 looper letters, 113 selfloop transitions, 33 changer transitions 0/169 dead transitions. [2024-01-31 16:05:11,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 169 transitions, 1568 flow [2024-01-31 16:05:11,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:05:11,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:05:11,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 235 transitions. [2024-01-31 16:05:11,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4835390946502058 [2024-01-31 16:05:11,352 INFO L175 Difference]: Start difference. First operand has 141 places, 127 transitions, 1115 flow. Second operand 6 states and 235 transitions. [2024-01-31 16:05:11,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 169 transitions, 1568 flow [2024-01-31 16:05:11,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 169 transitions, 1527 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-31 16:05:11,393 INFO L231 Difference]: Finished difference. Result has 143 places, 131 transitions, 1185 flow [2024-01-31 16:05:11,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=1074, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1185, PETRI_PLACES=143, PETRI_TRANSITIONS=131} [2024-01-31 16:05:11,393 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 58 predicate places. [2024-01-31 16:05:11,394 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 131 transitions, 1185 flow [2024-01-31 16:05:11,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.875) internal successors, (199), 8 states have internal predecessors, (199), 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) [2024-01-31 16:05:11,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:11,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:11,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-01-31 16:05:11,394 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:05:11,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:11,395 INFO L85 PathProgramCache]: Analyzing trace with hash 805201250, now seen corresponding path program 2 times [2024-01-31 16:05:11,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:11,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410594867] [2024-01-31 16:05:11,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:11,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:11,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:11,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:11,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:11,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410594867] [2024-01-31 16:05:11,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410594867] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:11,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:11,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:05:11,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356195043] [2024-01-31 16:05:11,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:11,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:05:11,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:11,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:05:11,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:05:11,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:05:11,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 131 transitions, 1185 flow. Second operand has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 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) [2024-01-31 16:05:11,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:11,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:05:11,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:12,487 INFO L124 PetriNetUnfolderBase]: 3109/5876 cut-off events. [2024-01-31 16:05:12,487 INFO L125 PetriNetUnfolderBase]: For 22748/22987 co-relation queries the response was YES. [2024-01-31 16:05:12,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20893 conditions, 5876 events. 3109/5876 cut-off events. For 22748/22987 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 41591 event pairs, 1317 based on Foata normal form. 100/5532 useless extension candidates. Maximal degree in co-relation 20838. Up to 3407 conditions per place. [2024-01-31 16:05:12,531 INFO L140 encePairwiseOnDemand]: 72/81 looper letters, 125 selfloop transitions, 37 changer transitions 0/185 dead transitions. [2024-01-31 16:05:12,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 185 transitions, 1764 flow [2024-01-31 16:05:12,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:05:12,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:05:12,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 270 transitions. [2024-01-31 16:05:12,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-01-31 16:05:12,533 INFO L175 Difference]: Start difference. First operand has 143 places, 131 transitions, 1185 flow. Second operand 7 states and 270 transitions. [2024-01-31 16:05:12,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 185 transitions, 1764 flow [2024-01-31 16:05:12,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 185 transitions, 1718 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-01-31 16:05:12,579 INFO L231 Difference]: Finished difference. Result has 147 places, 137 transitions, 1265 flow [2024-01-31 16:05:12,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=1139, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1265, PETRI_PLACES=147, PETRI_TRANSITIONS=137} [2024-01-31 16:05:12,580 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 62 predicate places. [2024-01-31 16:05:12,580 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 137 transitions, 1265 flow [2024-01-31 16:05:12,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 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) [2024-01-31 16:05:12,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:12,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:12,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-01-31 16:05:12,581 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting P1Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:05:12,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:12,581 INFO L85 PathProgramCache]: Analyzing trace with hash 805233060, now seen corresponding path program 2 times [2024-01-31 16:05:12,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:12,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566778140] [2024-01-31 16:05:12,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:12,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:12,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:12,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:12,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:12,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566778140] [2024-01-31 16:05:12,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566778140] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:12,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:12,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:05:12,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926146897] [2024-01-31 16:05:12,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:12,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:05:12,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:12,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:05:12,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:05:12,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:05:12,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 137 transitions, 1265 flow. Second operand has 8 states, 8 states have (on average 24.875) internal successors, (199), 8 states have internal predecessors, (199), 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) [2024-01-31 16:05:12,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:12,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:05:12,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:13,561 INFO L124 PetriNetUnfolderBase]: 2715/5176 cut-off events. [2024-01-31 16:05:13,561 INFO L125 PetriNetUnfolderBase]: For 22169/22325 co-relation queries the response was YES. [2024-01-31 16:05:13,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18932 conditions, 5176 events. 2715/5176 cut-off events. For 22169/22325 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 37002 event pairs, 1034 based on Foata normal form. 62/4858 useless extension candidates. Maximal degree in co-relation 18876. Up to 3076 conditions per place. [2024-01-31 16:05:13,603 INFO L140 encePairwiseOnDemand]: 72/81 looper letters, 114 selfloop transitions, 41 changer transitions 0/174 dead transitions. [2024-01-31 16:05:13,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 174 transitions, 1736 flow [2024-01-31 16:05:13,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:05:13,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:05:13,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 260 transitions. [2024-01-31 16:05:13,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4585537918871252 [2024-01-31 16:05:13,605 INFO L175 Difference]: Start difference. First operand has 147 places, 137 transitions, 1265 flow. Second operand 7 states and 260 transitions. [2024-01-31 16:05:13,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 174 transitions, 1736 flow [2024-01-31 16:05:13,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 174 transitions, 1694 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-31 16:05:13,645 INFO L231 Difference]: Finished difference. Result has 151 places, 137 transitions, 1317 flow [2024-01-31 16:05:13,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=1223, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1317, PETRI_PLACES=151, PETRI_TRANSITIONS=137} [2024-01-31 16:05:13,645 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 66 predicate places. [2024-01-31 16:05:13,646 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 137 transitions, 1317 flow [2024-01-31 16:05:13,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.875) internal successors, (199), 8 states have internal predecessors, (199), 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) [2024-01-31 16:05:13,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:13,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:13,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-01-31 16:05:13,647 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:05:13,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:13,647 INFO L85 PathProgramCache]: Analyzing trace with hash 158946160, now seen corresponding path program 3 times [2024-01-31 16:05:13,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:13,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529615859] [2024-01-31 16:05:13,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:13,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:13,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:13,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:13,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:13,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529615859] [2024-01-31 16:05:13,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529615859] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:13,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:13,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:05:13,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138696354] [2024-01-31 16:05:13,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:13,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:05:13,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:13,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:05:13,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:05:14,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:05:14,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 137 transitions, 1317 flow. Second operand has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 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) [2024-01-31 16:05:14,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:14,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:05:14,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:14,725 INFO L124 PetriNetUnfolderBase]: 2925/5573 cut-off events. [2024-01-31 16:05:14,726 INFO L125 PetriNetUnfolderBase]: For 27126/27367 co-relation queries the response was YES. [2024-01-31 16:05:14,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20296 conditions, 5573 events. 2925/5573 cut-off events. For 27126/27367 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 39435 event pairs, 1393 based on Foata normal form. 124/5243 useless extension candidates. Maximal degree in co-relation 20239. Up to 4389 conditions per place. [2024-01-31 16:05:14,764 INFO L140 encePairwiseOnDemand]: 72/81 looper letters, 123 selfloop transitions, 19 changer transitions 0/165 dead transitions. [2024-01-31 16:05:14,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 165 transitions, 1697 flow [2024-01-31 16:05:14,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:05:14,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:05:14,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 247 transitions. [2024-01-31 16:05:14,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43562610229276894 [2024-01-31 16:05:14,766 INFO L175 Difference]: Start difference. First operand has 151 places, 137 transitions, 1317 flow. Second operand 7 states and 247 transitions. [2024-01-31 16:05:14,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 165 transitions, 1697 flow [2024-01-31 16:05:14,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 165 transitions, 1615 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-31 16:05:14,821 INFO L231 Difference]: Finished difference. Result has 152 places, 137 transitions, 1282 flow [2024-01-31 16:05:14,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=1235, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1282, PETRI_PLACES=152, PETRI_TRANSITIONS=137} [2024-01-31 16:05:14,821 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 67 predicate places. [2024-01-31 16:05:14,821 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 137 transitions, 1282 flow [2024-01-31 16:05:14,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 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) [2024-01-31 16:05:14,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:14,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:14,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-01-31 16:05:14,822 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting P1Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:05:14,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:14,822 INFO L85 PathProgramCache]: Analyzing trace with hash 806276520, now seen corresponding path program 3 times [2024-01-31 16:05:14,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:14,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999462677] [2024-01-31 16:05:14,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:14,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:14,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:15,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:15,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:15,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999462677] [2024-01-31 16:05:15,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999462677] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:15,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:15,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:05:15,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514612813] [2024-01-31 16:05:15,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:15,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:05:15,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:15,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:05:15,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:05:15,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:05:15,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 137 transitions, 1282 flow. Second operand has 8 states, 8 states have (on average 24.875) internal successors, (199), 8 states have internal predecessors, (199), 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) [2024-01-31 16:05:15,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:15,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:05:15,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:15,826 INFO L124 PetriNetUnfolderBase]: 2485/4750 cut-off events. [2024-01-31 16:05:15,826 INFO L125 PetriNetUnfolderBase]: For 21926/22055 co-relation queries the response was YES. [2024-01-31 16:05:15,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17440 conditions, 4750 events. 2485/4750 cut-off events. For 21926/22055 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 33555 event pairs, 1194 based on Foata normal form. 101/4499 useless extension candidates. Maximal degree in co-relation 17382. Up to 3653 conditions per place. [2024-01-31 16:05:15,920 INFO L140 encePairwiseOnDemand]: 72/81 looper letters, 118 selfloop transitions, 24 changer transitions 0/161 dead transitions. [2024-01-31 16:05:15,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 161 transitions, 1659 flow [2024-01-31 16:05:15,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:05:15,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:05:15,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 241 transitions. [2024-01-31 16:05:15,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42504409171075835 [2024-01-31 16:05:15,921 INFO L175 Difference]: Start difference. First operand has 152 places, 137 transitions, 1282 flow. Second operand 7 states and 241 transitions. [2024-01-31 16:05:15,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 161 transitions, 1659 flow [2024-01-31 16:05:15,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 161 transitions, 1609 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-31 16:05:15,959 INFO L231 Difference]: Finished difference. Result has 153 places, 137 transitions, 1294 flow [2024-01-31 16:05:15,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=1232, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1294, PETRI_PLACES=153, PETRI_TRANSITIONS=137} [2024-01-31 16:05:15,960 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 68 predicate places. [2024-01-31 16:05:15,960 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 137 transitions, 1294 flow [2024-01-31 16:05:15,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.875) internal successors, (199), 8 states have internal predecessors, (199), 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) [2024-01-31 16:05:15,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:15,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:15,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-01-31 16:05:15,960 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:05:15,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:15,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1373509642, now seen corresponding path program 3 times [2024-01-31 16:05:15,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:15,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594803297] [2024-01-31 16:05:15,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:15,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:15,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:16,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:16,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:16,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594803297] [2024-01-31 16:05:16,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594803297] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:16,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:16,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:05:16,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010759492] [2024-01-31 16:05:16,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:16,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:05:16,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:16,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:05:16,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:05:16,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:05:16,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 137 transitions, 1294 flow. Second operand has 8 states, 8 states have (on average 24.875) internal successors, (199), 8 states have internal predecessors, (199), 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) [2024-01-31 16:05:16,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:16,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:05:16,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:16,952 INFO L124 PetriNetUnfolderBase]: 2747/5230 cut-off events. [2024-01-31 16:05:16,953 INFO L125 PetriNetUnfolderBase]: For 25948/26190 co-relation queries the response was YES. [2024-01-31 16:05:16,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19302 conditions, 5230 events. 2747/5230 cut-off events. For 25948/26190 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 36424 event pairs, 950 based on Foata normal form. 134/4938 useless extension candidates. Maximal degree in co-relation 19243. Up to 3399 conditions per place. [2024-01-31 16:05:16,996 INFO L140 encePairwiseOnDemand]: 66/81 looper letters, 108 selfloop transitions, 43 changer transitions 0/174 dead transitions. [2024-01-31 16:05:16,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 174 transitions, 1710 flow [2024-01-31 16:05:16,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:05:16,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:05:16,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 238 transitions. [2024-01-31 16:05:16,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4897119341563786 [2024-01-31 16:05:16,997 INFO L175 Difference]: Start difference. First operand has 153 places, 137 transitions, 1294 flow. Second operand 6 states and 238 transitions. [2024-01-31 16:05:16,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 174 transitions, 1710 flow [2024-01-31 16:05:17,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 174 transitions, 1658 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-01-31 16:05:17,039 INFO L231 Difference]: Finished difference. Result has 154 places, 142 transitions, 1396 flow [2024-01-31 16:05:17,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=1242, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1396, PETRI_PLACES=154, PETRI_TRANSITIONS=142} [2024-01-31 16:05:17,039 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 69 predicate places. [2024-01-31 16:05:17,039 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 142 transitions, 1396 flow [2024-01-31 16:05:17,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.875) internal successors, (199), 8 states have internal predecessors, (199), 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) [2024-01-31 16:05:17,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:17,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:17,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-01-31 16:05:17,040 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:05:17,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:17,040 INFO L85 PathProgramCache]: Analyzing trace with hash 919225178, now seen corresponding path program 4 times [2024-01-31 16:05:17,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:17,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934725742] [2024-01-31 16:05:17,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:17,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:17,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:17,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:17,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:17,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934725742] [2024-01-31 16:05:17,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934725742] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:17,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:17,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:05:17,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145921835] [2024-01-31 16:05:17,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:17,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:05:17,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:17,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:05:17,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:05:17,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:05:17,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 142 transitions, 1396 flow. Second operand has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 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) [2024-01-31 16:05:17,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:17,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:05:17,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:18,092 INFO L124 PetriNetUnfolderBase]: 2984/5477 cut-off events. [2024-01-31 16:05:18,092 INFO L125 PetriNetUnfolderBase]: For 30391/30615 co-relation queries the response was YES. [2024-01-31 16:05:18,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21580 conditions, 5477 events. 2984/5477 cut-off events. For 30391/30615 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 37195 event pairs, 1090 based on Foata normal form. 92/5160 useless extension candidates. Maximal degree in co-relation 21519. Up to 3681 conditions per place. [2024-01-31 16:05:18,126 INFO L140 encePairwiseOnDemand]: 69/81 looper letters, 109 selfloop transitions, 49 changer transitions 0/181 dead transitions. [2024-01-31 16:05:18,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 181 transitions, 1870 flow [2024-01-31 16:05:18,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:05:18,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:05:18,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 261 transitions. [2024-01-31 16:05:18,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4603174603174603 [2024-01-31 16:05:18,127 INFO L175 Difference]: Start difference. First operand has 154 places, 142 transitions, 1396 flow. Second operand 7 states and 261 transitions. [2024-01-31 16:05:18,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 181 transitions, 1870 flow [2024-01-31 16:05:18,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 181 transitions, 1808 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-01-31 16:05:18,169 INFO L231 Difference]: Finished difference. Result has 158 places, 147 transitions, 1495 flow [2024-01-31 16:05:18,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=1334, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1495, PETRI_PLACES=158, PETRI_TRANSITIONS=147} [2024-01-31 16:05:18,170 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 73 predicate places. [2024-01-31 16:05:18,170 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 147 transitions, 1495 flow [2024-01-31 16:05:18,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 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) [2024-01-31 16:05:18,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:18,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:18,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-01-31 16:05:18,171 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:05:18,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:18,171 INFO L85 PathProgramCache]: Analyzing trace with hash -49432132, now seen corresponding path program 5 times [2024-01-31 16:05:18,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:18,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888499604] [2024-01-31 16:05:18,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:18,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:18,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:18,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:18,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:18,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888499604] [2024-01-31 16:05:18,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888499604] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:18,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:18,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:05:18,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530549494] [2024-01-31 16:05:18,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:18,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:05:18,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:18,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:05:18,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:05:18,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:05:18,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 147 transitions, 1495 flow. Second operand has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 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) [2024-01-31 16:05:18,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:18,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:05:18,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:19,199 INFO L124 PetriNetUnfolderBase]: 2867/5468 cut-off events. [2024-01-31 16:05:19,199 INFO L125 PetriNetUnfolderBase]: For 30812/31075 co-relation queries the response was YES. [2024-01-31 16:05:19,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21679 conditions, 5468 events. 2867/5468 cut-off events. For 30812/31075 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 38487 event pairs, 1249 based on Foata normal form. 139/5178 useless extension candidates. Maximal degree in co-relation 21617. Up to 4374 conditions per place. [2024-01-31 16:05:19,247 INFO L140 encePairwiseOnDemand]: 72/81 looper letters, 133 selfloop transitions, 21 changer transitions 0/177 dead transitions. [2024-01-31 16:05:19,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 177 transitions, 1954 flow [2024-01-31 16:05:19,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:05:19,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:05:19,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 243 transitions. [2024-01-31 16:05:19,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-01-31 16:05:19,248 INFO L175 Difference]: Start difference. First operand has 158 places, 147 transitions, 1495 flow. Second operand 7 states and 243 transitions. [2024-01-31 16:05:19,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 177 transitions, 1954 flow [2024-01-31 16:05:19,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 177 transitions, 1859 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-01-31 16:05:19,304 INFO L231 Difference]: Finished difference. Result has 160 places, 153 transitions, 1537 flow [2024-01-31 16:05:19,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=1416, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1537, PETRI_PLACES=160, PETRI_TRANSITIONS=153} [2024-01-31 16:05:19,305 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 75 predicate places. [2024-01-31 16:05:19,306 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 153 transitions, 1537 flow [2024-01-31 16:05:19,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 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) [2024-01-31 16:05:19,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:19,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:19,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-01-31 16:05:19,306 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:05:19,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:19,308 INFO L85 PathProgramCache]: Analyzing trace with hash 954226658, now seen corresponding path program 6 times [2024-01-31 16:05:19,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:19,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103284367] [2024-01-31 16:05:19,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:19,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:19,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:19,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:19,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:19,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103284367] [2024-01-31 16:05:19,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103284367] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:19,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:19,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:05:19,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157260825] [2024-01-31 16:05:19,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:19,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:05:19,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:19,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:05:19,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:05:19,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:05:19,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 153 transitions, 1537 flow. Second operand has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 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) [2024-01-31 16:05:19,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:19,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:05:19,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:20,362 INFO L124 PetriNetUnfolderBase]: 2829/5372 cut-off events. [2024-01-31 16:05:20,363 INFO L125 PetriNetUnfolderBase]: For 28929/29177 co-relation queries the response was YES. [2024-01-31 16:05:20,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20678 conditions, 5372 events. 2829/5372 cut-off events. For 28929/29177 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 37495 event pairs, 1246 based on Foata normal form. 121/5062 useless extension candidates. Maximal degree in co-relation 20616. Up to 4064 conditions per place. [2024-01-31 16:05:20,399 INFO L140 encePairwiseOnDemand]: 72/81 looper letters, 122 selfloop transitions, 30 changer transitions 0/175 dead transitions. [2024-01-31 16:05:20,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 175 transitions, 1904 flow [2024-01-31 16:05:20,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:05:20,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:05:20,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 241 transitions. [2024-01-31 16:05:20,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42504409171075835 [2024-01-31 16:05:20,400 INFO L175 Difference]: Start difference. First operand has 160 places, 153 transitions, 1537 flow. Second operand 7 states and 241 transitions. [2024-01-31 16:05:20,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 175 transitions, 1904 flow [2024-01-31 16:05:20,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 175 transitions, 1869 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-31 16:05:20,444 INFO L231 Difference]: Finished difference. Result has 163 places, 153 transitions, 1581 flow [2024-01-31 16:05:20,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=1502, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1581, PETRI_PLACES=163, PETRI_TRANSITIONS=153} [2024-01-31 16:05:20,444 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 78 predicate places. [2024-01-31 16:05:20,445 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 153 transitions, 1581 flow [2024-01-31 16:05:20,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 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) [2024-01-31 16:05:20,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:20,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:20,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-01-31 16:05:20,445 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:05:20,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:20,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1266615434, now seen corresponding path program 1 times [2024-01-31 16:05:20,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:20,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595103536] [2024-01-31 16:05:20,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:20,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:20,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:20,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:20,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:20,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595103536] [2024-01-31 16:05:20,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595103536] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:20,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:20,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:05:20,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88167063] [2024-01-31 16:05:20,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:20,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:05:20,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:20,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:05:20,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:05:20,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 81 [2024-01-31 16:05:20,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 153 transitions, 1581 flow. Second operand has 7 states, 7 states have (on average 36.714285714285715) internal successors, (257), 7 states have internal predecessors, (257), 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) [2024-01-31 16:05:20,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:20,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 81 [2024-01-31 16:05:20,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:21,257 INFO L124 PetriNetUnfolderBase]: 2328/4810 cut-off events. [2024-01-31 16:05:21,257 INFO L125 PetriNetUnfolderBase]: For 27770/28058 co-relation queries the response was YES. [2024-01-31 16:05:21,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18312 conditions, 4810 events. 2328/4810 cut-off events. For 27770/28058 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 36020 event pairs, 943 based on Foata normal form. 71/4461 useless extension candidates. Maximal degree in co-relation 18249. Up to 3425 conditions per place. [2024-01-31 16:05:21,293 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 131 selfloop transitions, 23 changer transitions 0/192 dead transitions. [2024-01-31 16:05:21,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 192 transitions, 2231 flow [2024-01-31 16:05:21,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:05:21,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:05:21,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 281 transitions. [2024-01-31 16:05:21,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5781893004115226 [2024-01-31 16:05:21,295 INFO L175 Difference]: Start difference. First operand has 163 places, 153 transitions, 1581 flow. Second operand 6 states and 281 transitions. [2024-01-31 16:05:21,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 192 transitions, 2231 flow [2024-01-31 16:05:21,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 192 transitions, 2155 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-01-31 16:05:21,333 INFO L231 Difference]: Finished difference. Result has 165 places, 168 transitions, 1813 flow [2024-01-31 16:05:21,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=1511, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1813, PETRI_PLACES=165, PETRI_TRANSITIONS=168} [2024-01-31 16:05:21,333 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 80 predicate places. [2024-01-31 16:05:21,334 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 168 transitions, 1813 flow [2024-01-31 16:05:21,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 36.714285714285715) internal successors, (257), 7 states have internal predecessors, (257), 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) [2024-01-31 16:05:21,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:21,334 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:21,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-01-31 16:05:21,334 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:05:21,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:21,334 INFO L85 PathProgramCache]: Analyzing trace with hash -153334834, now seen corresponding path program 1 times [2024-01-31 16:05:21,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:21,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824741176] [2024-01-31 16:05:21,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:21,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:21,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:21,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:21,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:21,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824741176] [2024-01-31 16:05:21,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824741176] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:21,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:21,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:05:21,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728972800] [2024-01-31 16:05:21,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:21,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:05:21,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:21,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:05:21,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:05:21,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 81 [2024-01-31 16:05:21,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 168 transitions, 1813 flow. Second operand has 7 states, 7 states have (on average 36.714285714285715) internal successors, (257), 7 states have internal predecessors, (257), 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) [2024-01-31 16:05:21,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:21,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 81 [2024-01-31 16:05:21,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:22,150 INFO L124 PetriNetUnfolderBase]: 2293/4585 cut-off events. [2024-01-31 16:05:22,150 INFO L125 PetriNetUnfolderBase]: For 27379/27684 co-relation queries the response was YES. [2024-01-31 16:05:22,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17939 conditions, 4585 events. 2293/4585 cut-off events. For 27379/27684 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 33524 event pairs, 964 based on Foata normal form. 74/4286 useless extension candidates. Maximal degree in co-relation 17875. Up to 3393 conditions per place. [2024-01-31 16:05:22,184 INFO L140 encePairwiseOnDemand]: 74/81 looper letters, 136 selfloop transitions, 30 changer transitions 0/204 dead transitions. [2024-01-31 16:05:22,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 204 transitions, 2430 flow [2024-01-31 16:05:22,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:05:22,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:05:22,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 317 transitions. [2024-01-31 16:05:22,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5590828924162258 [2024-01-31 16:05:22,185 INFO L175 Difference]: Start difference. First operand has 165 places, 168 transitions, 1813 flow. Second operand 7 states and 317 transitions. [2024-01-31 16:05:22,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 204 transitions, 2430 flow [2024-01-31 16:05:22,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 204 transitions, 2426 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-01-31 16:05:22,227 INFO L231 Difference]: Finished difference. Result has 174 places, 184 transitions, 2123 flow [2024-01-31 16:05:22,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=1809, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2123, PETRI_PLACES=174, PETRI_TRANSITIONS=184} [2024-01-31 16:05:22,227 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 89 predicate places. [2024-01-31 16:05:22,227 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 184 transitions, 2123 flow [2024-01-31 16:05:22,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 36.714285714285715) internal successors, (257), 7 states have internal predecessors, (257), 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) [2024-01-31 16:05:22,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:22,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:22,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-01-31 16:05:22,228 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:05:22,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:22,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1655832964, now seen corresponding path program 1 times [2024-01-31 16:05:22,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:22,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379184689] [2024-01-31 16:05:22,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:22,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:22,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:22,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:22,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:22,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379184689] [2024-01-31 16:05:22,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379184689] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:22,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:22,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:05:22,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438289122] [2024-01-31 16:05:22,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:22,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:05:22,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:22,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:05:22,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:05:22,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:05:22,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 184 transitions, 2123 flow. Second operand has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 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) [2024-01-31 16:05:22,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:22,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:05:22,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:23,233 INFO L124 PetriNetUnfolderBase]: 3000/5645 cut-off events. [2024-01-31 16:05:23,234 INFO L125 PetriNetUnfolderBase]: For 31204/31449 co-relation queries the response was YES. [2024-01-31 16:05:23,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22451 conditions, 5645 events. 3000/5645 cut-off events. For 31204/31449 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 39607 event pairs, 1230 based on Foata normal form. 54/5239 useless extension candidates. Maximal degree in co-relation 22382. Up to 4395 conditions per place. [2024-01-31 16:05:23,278 INFO L140 encePairwiseOnDemand]: 71/81 looper letters, 171 selfloop transitions, 36 changer transitions 0/230 dead transitions. [2024-01-31 16:05:23,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 230 transitions, 2828 flow [2024-01-31 16:05:23,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:05:23,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:05:23,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 279 transitions. [2024-01-31 16:05:23,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4305555555555556 [2024-01-31 16:05:23,279 INFO L175 Difference]: Start difference. First operand has 174 places, 184 transitions, 2123 flow. Second operand 8 states and 279 transitions. [2024-01-31 16:05:23,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 230 transitions, 2828 flow [2024-01-31 16:05:23,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 230 transitions, 2808 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-01-31 16:05:23,334 INFO L231 Difference]: Finished difference. Result has 183 places, 199 transitions, 2362 flow [2024-01-31 16:05:23,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=2103, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2362, PETRI_PLACES=183, PETRI_TRANSITIONS=199} [2024-01-31 16:05:23,334 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 98 predicate places. [2024-01-31 16:05:23,335 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 199 transitions, 2362 flow [2024-01-31 16:05:23,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 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) [2024-01-31 16:05:23,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:23,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:23,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-01-31 16:05:23,337 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:05:23,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:23,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1737640958, now seen corresponding path program 2 times [2024-01-31 16:05:23,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:23,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997371699] [2024-01-31 16:05:23,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:23,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:23,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:23,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:23,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:23,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997371699] [2024-01-31 16:05:23,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997371699] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:23,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:23,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:05:23,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502287669] [2024-01-31 16:05:23,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:23,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:05:23,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:23,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:05:23,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:05:23,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:05:23,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 199 transitions, 2362 flow. Second operand has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 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) [2024-01-31 16:05:23,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:23,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:05:23,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:24,354 INFO L124 PetriNetUnfolderBase]: 3002/5643 cut-off events. [2024-01-31 16:05:24,354 INFO L125 PetriNetUnfolderBase]: For 33277/33526 co-relation queries the response was YES. [2024-01-31 16:05:24,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23153 conditions, 5643 events. 3002/5643 cut-off events. For 33277/33526 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 39605 event pairs, 1230 based on Foata normal form. 58/5239 useless extension candidates. Maximal degree in co-relation 23080. Up to 4403 conditions per place. [2024-01-31 16:05:24,401 INFO L140 encePairwiseOnDemand]: 74/81 looper letters, 173 selfloop transitions, 33 changer transitions 0/229 dead transitions. [2024-01-31 16:05:24,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 229 transitions, 2923 flow [2024-01-31 16:05:24,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:05:24,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:05:24,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 248 transitions. [2024-01-31 16:05:24,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43738977072310403 [2024-01-31 16:05:24,402 INFO L175 Difference]: Start difference. First operand has 183 places, 199 transitions, 2362 flow. Second operand 7 states and 248 transitions. [2024-01-31 16:05:24,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 229 transitions, 2923 flow [2024-01-31 16:05:24,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 229 transitions, 2882 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-01-31 16:05:24,458 INFO L231 Difference]: Finished difference. Result has 187 places, 199 transitions, 2392 flow [2024-01-31 16:05:24,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=2321, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2392, PETRI_PLACES=187, PETRI_TRANSITIONS=199} [2024-01-31 16:05:24,459 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 102 predicate places. [2024-01-31 16:05:24,459 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 199 transitions, 2392 flow [2024-01-31 16:05:24,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 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) [2024-01-31 16:05:24,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:24,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:24,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-01-31 16:05:24,460 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:05:24,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:24,460 INFO L85 PathProgramCache]: Analyzing trace with hash 750648956, now seen corresponding path program 3 times [2024-01-31 16:05:24,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:24,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311266615] [2024-01-31 16:05:24,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:24,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:24,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:24,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:24,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:24,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311266615] [2024-01-31 16:05:24,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311266615] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:24,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:24,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:05:24,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819701186] [2024-01-31 16:05:24,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:24,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:05:24,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:24,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:05:24,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:05:24,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:05:24,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 199 transitions, 2392 flow. Second operand has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 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) [2024-01-31 16:05:24,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:24,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:05:24,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:25,587 INFO L124 PetriNetUnfolderBase]: 2988/5605 cut-off events. [2024-01-31 16:05:25,588 INFO L125 PetriNetUnfolderBase]: For 34037/34288 co-relation queries the response was YES. [2024-01-31 16:05:25,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23054 conditions, 5605 events. 2988/5605 cut-off events. For 34037/34288 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 39377 event pairs, 1263 based on Foata normal form. 50/5191 useless extension candidates. Maximal degree in co-relation 22980. Up to 4395 conditions per place. [2024-01-31 16:05:25,627 INFO L140 encePairwiseOnDemand]: 74/81 looper letters, 171 selfloop transitions, 35 changer transitions 0/229 dead transitions. [2024-01-31 16:05:25,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 229 transitions, 2971 flow [2024-01-31 16:05:25,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:05:25,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:05:25,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 248 transitions. [2024-01-31 16:05:25,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43738977072310403 [2024-01-31 16:05:25,628 INFO L175 Difference]: Start difference. First operand has 187 places, 199 transitions, 2392 flow. Second operand 7 states and 248 transitions. [2024-01-31 16:05:25,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 229 transitions, 2971 flow [2024-01-31 16:05:25,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 229 transitions, 2899 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-01-31 16:05:25,676 INFO L231 Difference]: Finished difference. Result has 190 places, 203 transitions, 2440 flow [2024-01-31 16:05:25,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=2326, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2440, PETRI_PLACES=190, PETRI_TRANSITIONS=203} [2024-01-31 16:05:25,677 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 105 predicate places. [2024-01-31 16:05:25,677 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 203 transitions, 2440 flow [2024-01-31 16:05:25,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 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) [2024-01-31 16:05:25,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:25,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:25,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-01-31 16:05:25,678 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:05:25,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:25,678 INFO L85 PathProgramCache]: Analyzing trace with hash 624946824, now seen corresponding path program 1 times [2024-01-31 16:05:25,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:25,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909407634] [2024-01-31 16:05:25,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:25,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:25,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:25,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:25,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:25,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909407634] [2024-01-31 16:05:25,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909407634] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:25,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:25,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:05:25,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639531402] [2024-01-31 16:05:25,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:25,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:05:25,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:25,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:05:25,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:05:25,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:05:25,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 203 transitions, 2440 flow. Second operand has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 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) [2024-01-31 16:05:25,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:25,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:05:25,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:26,895 INFO L124 PetriNetUnfolderBase]: 2812/5345 cut-off events. [2024-01-31 16:05:26,895 INFO L125 PetriNetUnfolderBase]: For 32939/33211 co-relation queries the response was YES. [2024-01-31 16:05:26,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22168 conditions, 5345 events. 2812/5345 cut-off events. For 32939/33211 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 37422 event pairs, 1422 based on Foata normal form. 79/4967 useless extension candidates. Maximal degree in co-relation 22092. Up to 4204 conditions per place. [2024-01-31 16:05:26,944 INFO L140 encePairwiseOnDemand]: 73/81 looper letters, 181 selfloop transitions, 38 changer transitions 0/246 dead transitions. [2024-01-31 16:05:26,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 246 transitions, 3085 flow [2024-01-31 16:05:26,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:05:26,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:05:26,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 279 transitions. [2024-01-31 16:05:26,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4305555555555556 [2024-01-31 16:05:26,945 INFO L175 Difference]: Start difference. First operand has 190 places, 203 transitions, 2440 flow. Second operand 8 states and 279 transitions. [2024-01-31 16:05:26,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 246 transitions, 3085 flow [2024-01-31 16:05:27,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 246 transitions, 3047 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:05:27,014 INFO L231 Difference]: Finished difference. Result has 197 places, 216 transitions, 2603 flow [2024-01-31 16:05:27,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=2404, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2603, PETRI_PLACES=197, PETRI_TRANSITIONS=216} [2024-01-31 16:05:27,015 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 112 predicate places. [2024-01-31 16:05:27,015 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 216 transitions, 2603 flow [2024-01-31 16:05:27,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 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) [2024-01-31 16:05:27,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:27,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:27,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-01-31 16:05:27,018 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:05:27,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:27,018 INFO L85 PathProgramCache]: Analyzing trace with hash -224316844, now seen corresponding path program 2 times [2024-01-31 16:05:27,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:27,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926511576] [2024-01-31 16:05:27,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:27,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:27,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:27,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:27,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:27,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926511576] [2024-01-31 16:05:27,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926511576] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:27,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:27,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:05:27,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923829287] [2024-01-31 16:05:27,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:27,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:05:27,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:27,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:05:27,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:05:27,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:05:27,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 216 transitions, 2603 flow. Second operand has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 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) [2024-01-31 16:05:27,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:27,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:05:27,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:28,135 INFO L124 PetriNetUnfolderBase]: 2838/5395 cut-off events. [2024-01-31 16:05:28,135 INFO L125 PetriNetUnfolderBase]: For 34389/34650 co-relation queries the response was YES. [2024-01-31 16:05:28,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22469 conditions, 5395 events. 2838/5395 cut-off events. For 34389/34650 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 37784 event pairs, 1344 based on Foata normal form. 78/5027 useless extension candidates. Maximal degree in co-relation 22390. Up to 4236 conditions per place. [2024-01-31 16:05:28,188 INFO L140 encePairwiseOnDemand]: 73/81 looper letters, 179 selfloop transitions, 41 changer transitions 0/247 dead transitions. [2024-01-31 16:05:28,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 247 transitions, 3164 flow [2024-01-31 16:05:28,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:05:28,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:05:28,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 277 transitions. [2024-01-31 16:05:28,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42746913580246915 [2024-01-31 16:05:28,190 INFO L175 Difference]: Start difference. First operand has 197 places, 216 transitions, 2603 flow. Second operand 8 states and 277 transitions. [2024-01-31 16:05:28,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 247 transitions, 3164 flow [2024-01-31 16:05:28,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 247 transitions, 3122 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:05:28,260 INFO L231 Difference]: Finished difference. Result has 203 places, 219 transitions, 2669 flow [2024-01-31 16:05:28,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=2564, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2669, PETRI_PLACES=203, PETRI_TRANSITIONS=219} [2024-01-31 16:05:28,260 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 118 predicate places. [2024-01-31 16:05:28,261 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 219 transitions, 2669 flow [2024-01-31 16:05:28,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 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) [2024-01-31 16:05:28,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:28,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:28,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-01-31 16:05:28,261 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:05:28,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:28,262 INFO L85 PathProgramCache]: Analyzing trace with hash -930099394, now seen corresponding path program 3 times [2024-01-31 16:05:28,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:28,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520257680] [2024-01-31 16:05:28,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:28,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:28,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:28,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:28,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:28,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520257680] [2024-01-31 16:05:28,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520257680] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:28,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:28,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:05:28,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427273843] [2024-01-31 16:05:28,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:28,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:05:28,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:28,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:05:28,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:05:28,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:05:28,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 219 transitions, 2669 flow. Second operand has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 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) [2024-01-31 16:05:28,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:28,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:05:28,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:29,261 INFO L124 PetriNetUnfolderBase]: 2852/5413 cut-off events. [2024-01-31 16:05:29,261 INFO L125 PetriNetUnfolderBase]: For 35386/35651 co-relation queries the response was YES. [2024-01-31 16:05:29,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22621 conditions, 5413 events. 2852/5413 cut-off events. For 35386/35651 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 37877 event pairs, 1351 based on Foata normal form. 76/5041 useless extension candidates. Maximal degree in co-relation 22540. Up to 4248 conditions per place. [2024-01-31 16:05:29,309 INFO L140 encePairwiseOnDemand]: 73/81 looper letters, 177 selfloop transitions, 44 changer transitions 0/248 dead transitions. [2024-01-31 16:05:29,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 248 transitions, 3224 flow [2024-01-31 16:05:29,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:05:29,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:05:29,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 275 transitions. [2024-01-31 16:05:29,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4243827160493827 [2024-01-31 16:05:29,311 INFO L175 Difference]: Start difference. First operand has 203 places, 219 transitions, 2669 flow. Second operand 8 states and 275 transitions. [2024-01-31 16:05:29,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 248 transitions, 3224 flow [2024-01-31 16:05:29,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 248 transitions, 3186 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-31 16:05:29,378 INFO L231 Difference]: Finished difference. Result has 208 places, 221 transitions, 2740 flow [2024-01-31 16:05:29,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=2632, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2740, PETRI_PLACES=208, PETRI_TRANSITIONS=221} [2024-01-31 16:05:29,378 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 123 predicate places. [2024-01-31 16:05:29,378 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 221 transitions, 2740 flow [2024-01-31 16:05:29,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 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) [2024-01-31 16:05:29,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:29,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:29,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-01-31 16:05:29,379 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:05:29,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:29,379 INFO L85 PathProgramCache]: Analyzing trace with hash -928787164, now seen corresponding path program 4 times [2024-01-31 16:05:29,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:29,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288299194] [2024-01-31 16:05:29,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:29,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:29,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:29,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:29,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:29,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288299194] [2024-01-31 16:05:29,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288299194] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:29,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:29,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:05:29,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64424963] [2024-01-31 16:05:29,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:29,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:05:29,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:29,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:05:29,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:05:29,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:05:29,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 221 transitions, 2740 flow. Second operand has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 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) [2024-01-31 16:05:29,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:29,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:05:29,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:30,386 INFO L124 PetriNetUnfolderBase]: 2846/5403 cut-off events. [2024-01-31 16:05:30,386 INFO L125 PetriNetUnfolderBase]: For 36056/36321 co-relation queries the response was YES. [2024-01-31 16:05:30,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22657 conditions, 5403 events. 2846/5403 cut-off events. For 36056/36321 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 37787 event pairs, 1346 based on Foata normal form. 70/5025 useless extension candidates. Maximal degree in co-relation 22576. Up to 4248 conditions per place. [2024-01-31 16:05:30,434 INFO L140 encePairwiseOnDemand]: 73/81 looper letters, 173 selfloop transitions, 46 changer transitions 0/246 dead transitions. [2024-01-31 16:05:30,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 246 transitions, 3260 flow [2024-01-31 16:05:30,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:05:30,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:05:30,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 273 transitions. [2024-01-31 16:05:30,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4212962962962963 [2024-01-31 16:05:30,435 INFO L175 Difference]: Start difference. First operand has 208 places, 221 transitions, 2740 flow. Second operand 8 states and 273 transitions. [2024-01-31 16:05:30,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 246 transitions, 3260 flow [2024-01-31 16:05:30,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 246 transitions, 3197 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-31 16:05:30,503 INFO L231 Difference]: Finished difference. Result has 212 places, 221 transitions, 2774 flow [2024-01-31 16:05:30,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=2677, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2774, PETRI_PLACES=212, PETRI_TRANSITIONS=221} [2024-01-31 16:05:30,504 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 127 predicate places. [2024-01-31 16:05:30,504 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 221 transitions, 2774 flow [2024-01-31 16:05:30,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.625) internal successors, (197), 8 states have internal predecessors, (197), 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) [2024-01-31 16:05:30,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:30,505 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:30,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-01-31 16:05:30,505 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:05:30,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:30,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1285460678, now seen corresponding path program 1 times [2024-01-31 16:05:30,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:30,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573221915] [2024-01-31 16:05:30,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:30,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:30,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:30,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:30,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:30,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573221915] [2024-01-31 16:05:30,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573221915] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:30,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:30,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:30,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662010818] [2024-01-31 16:05:30,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:30,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:05:30,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:30,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:05:30,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:05:30,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 81 [2024-01-31 16:05:30,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 221 transitions, 2774 flow. Second operand has 9 states, 9 states have (on average 36.55555555555556) internal successors, (329), 9 states have internal predecessors, (329), 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) [2024-01-31 16:05:30,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:30,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 81 [2024-01-31 16:05:30,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:31,684 INFO L124 PetriNetUnfolderBase]: 2418/4936 cut-off events. [2024-01-31 16:05:31,684 INFO L125 PetriNetUnfolderBase]: For 36053/36350 co-relation queries the response was YES. [2024-01-31 16:05:31,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20336 conditions, 4936 events. 2418/4936 cut-off events. For 36053/36350 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 36845 event pairs, 1022 based on Foata normal form. 60/4539 useless extension candidates. Maximal degree in co-relation 20254. Up to 3533 conditions per place. [2024-01-31 16:05:31,731 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 162 selfloop transitions, 32 changer transitions 0/240 dead transitions. [2024-01-31 16:05:31,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 240 transitions, 3248 flow [2024-01-31 16:05:31,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:05:31,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:05:31,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 275 transitions. [2024-01-31 16:05:31,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.565843621399177 [2024-01-31 16:05:31,732 INFO L175 Difference]: Start difference. First operand has 212 places, 221 transitions, 2774 flow. Second operand 6 states and 275 transitions. [2024-01-31 16:05:31,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 240 transitions, 3248 flow [2024-01-31 16:05:31,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 240 transitions, 3156 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-01-31 16:05:31,793 INFO L231 Difference]: Finished difference. Result has 213 places, 223 transitions, 2792 flow [2024-01-31 16:05:31,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=2682, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2792, PETRI_PLACES=213, PETRI_TRANSITIONS=223} [2024-01-31 16:05:31,793 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 128 predicate places. [2024-01-31 16:05:31,794 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 223 transitions, 2792 flow [2024-01-31 16:05:31,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 36.55555555555556) internal successors, (329), 9 states have internal predecessors, (329), 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) [2024-01-31 16:05:31,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:31,794 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] [2024-01-31 16:05:31,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-01-31 16:05:31,794 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:05:31,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:31,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1368122145, now seen corresponding path program 1 times [2024-01-31 16:05:31,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:31,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58416630] [2024-01-31 16:05:31,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:31,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:31,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:32,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:32,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:32,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58416630] [2024-01-31 16:05:32,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58416630] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:32,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:32,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:32,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524930218] [2024-01-31 16:05:32,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:32,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:05:32,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:32,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:05:32,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:05:32,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:05:32,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 223 transitions, 2792 flow. Second operand has 9 states, 9 states have (on average 24.88888888888889) internal successors, (224), 9 states have internal predecessors, (224), 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) [2024-01-31 16:05:32,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:32,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:05:32,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:33,067 INFO L124 PetriNetUnfolderBase]: 2933/5544 cut-off events. [2024-01-31 16:05:33,067 INFO L125 PetriNetUnfolderBase]: For 40132/40426 co-relation queries the response was YES. [2024-01-31 16:05:33,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23449 conditions, 5544 events. 2933/5544 cut-off events. For 40132/40426 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 38755 event pairs, 1267 based on Foata normal form. 133/5312 useless extension candidates. Maximal degree in co-relation 23365. Up to 4289 conditions per place. [2024-01-31 16:05:33,118 INFO L140 encePairwiseOnDemand]: 69/81 looper letters, 196 selfloop transitions, 38 changer transitions 0/261 dead transitions. [2024-01-31 16:05:33,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 261 transitions, 3435 flow [2024-01-31 16:05:33,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:05:33,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:05:33,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 280 transitions. [2024-01-31 16:05:33,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43209876543209874 [2024-01-31 16:05:33,119 INFO L175 Difference]: Start difference. First operand has 213 places, 223 transitions, 2792 flow. Second operand 8 states and 280 transitions. [2024-01-31 16:05:33,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 261 transitions, 3435 flow [2024-01-31 16:05:33,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 261 transitions, 3359 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-01-31 16:05:33,194 INFO L231 Difference]: Finished difference. Result has 218 places, 225 transitions, 2820 flow [2024-01-31 16:05:33,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=2716, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2820, PETRI_PLACES=218, PETRI_TRANSITIONS=225} [2024-01-31 16:05:33,195 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 133 predicate places. [2024-01-31 16:05:33,195 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 225 transitions, 2820 flow [2024-01-31 16:05:33,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.88888888888889) internal successors, (224), 9 states have internal predecessors, (224), 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) [2024-01-31 16:05:33,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:33,195 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] [2024-01-31 16:05:33,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-01-31 16:05:33,196 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:05:33,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:33,196 INFO L85 PathProgramCache]: Analyzing trace with hash -588945167, now seen corresponding path program 1 times [2024-01-31 16:05:33,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:33,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82477123] [2024-01-31 16:05:33,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:33,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:33,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:33,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:33,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:33,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82477123] [2024-01-31 16:05:33,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82477123] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:33,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:33,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:33,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532464817] [2024-01-31 16:05:33,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:33,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:05:33,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:33,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:05:33,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:05:33,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:05:33,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 225 transitions, 2820 flow. Second operand has 9 states, 9 states have (on average 24.666666666666668) internal successors, (222), 9 states have internal predecessors, (222), 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) [2024-01-31 16:05:33,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:33,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:05:33,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:34,339 INFO L124 PetriNetUnfolderBase]: 2776/5313 cut-off events. [2024-01-31 16:05:34,339 INFO L125 PetriNetUnfolderBase]: For 38415/38669 co-relation queries the response was YES. [2024-01-31 16:05:34,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22809 conditions, 5313 events. 2776/5313 cut-off events. For 38415/38669 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 37543 event pairs, 996 based on Foata normal form. 61/5039 useless extension candidates. Maximal degree in co-relation 22724. Up to 2943 conditions per place. [2024-01-31 16:05:34,389 INFO L140 encePairwiseOnDemand]: 71/81 looper letters, 204 selfloop transitions, 75 changer transitions 0/306 dead transitions. [2024-01-31 16:05:34,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 306 transitions, 4063 flow [2024-01-31 16:05:34,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:05:34,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:05:34,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 294 transitions. [2024-01-31 16:05:34,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4537037037037037 [2024-01-31 16:05:34,390 INFO L175 Difference]: Start difference. First operand has 218 places, 225 transitions, 2820 flow. Second operand 8 states and 294 transitions. [2024-01-31 16:05:34,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 306 transitions, 4063 flow [2024-01-31 16:05:34,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 306 transitions, 3980 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-01-31 16:05:34,465 INFO L231 Difference]: Finished difference. Result has 224 places, 247 transitions, 3196 flow [2024-01-31 16:05:34,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=2751, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3196, PETRI_PLACES=224, PETRI_TRANSITIONS=247} [2024-01-31 16:05:34,465 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 139 predicate places. [2024-01-31 16:05:34,465 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 247 transitions, 3196 flow [2024-01-31 16:05:34,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.666666666666668) internal successors, (222), 9 states have internal predecessors, (222), 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) [2024-01-31 16:05:34,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:34,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:34,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-01-31 16:05:34,466 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:05:34,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:34,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1686510480, now seen corresponding path program 1 times [2024-01-31 16:05:34,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:34,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679602244] [2024-01-31 16:05:34,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:34,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:34,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:34,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:34,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:34,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679602244] [2024-01-31 16:05:34,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679602244] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:34,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:34,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:34,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332017254] [2024-01-31 16:05:34,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:34,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:05:34,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:34,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:05:34,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:05:34,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 81 [2024-01-31 16:05:34,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 247 transitions, 3196 flow. Second operand has 9 states, 9 states have (on average 36.55555555555556) internal successors, (329), 9 states have internal predecessors, (329), 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) [2024-01-31 16:05:34,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:34,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 81 [2024-01-31 16:05:34,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:35,439 INFO L124 PetriNetUnfolderBase]: 2122/4360 cut-off events. [2024-01-31 16:05:35,439 INFO L125 PetriNetUnfolderBase]: For 38184/38448 co-relation queries the response was YES. [2024-01-31 16:05:35,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19514 conditions, 4360 events. 2122/4360 cut-off events. For 38184/38448 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 32301 event pairs, 861 based on Foata normal form. 66/4163 useless extension candidates. Maximal degree in co-relation 19426. Up to 3178 conditions per place. [2024-01-31 16:05:35,481 INFO L140 encePairwiseOnDemand]: 73/81 looper letters, 178 selfloop transitions, 40 changer transitions 0/264 dead transitions. [2024-01-31 16:05:35,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 264 transitions, 3715 flow [2024-01-31 16:05:35,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:05:35,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:05:35,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 311 transitions. [2024-01-31 16:05:35,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5485008818342152 [2024-01-31 16:05:35,482 INFO L175 Difference]: Start difference. First operand has 224 places, 247 transitions, 3196 flow. Second operand 7 states and 311 transitions. [2024-01-31 16:05:35,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 264 transitions, 3715 flow [2024-01-31 16:05:35,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 264 transitions, 3598 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-01-31 16:05:35,553 INFO L231 Difference]: Finished difference. Result has 227 places, 249 transitions, 3214 flow [2024-01-31 16:05:35,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=3081, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3214, PETRI_PLACES=227, PETRI_TRANSITIONS=249} [2024-01-31 16:05:35,554 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 142 predicate places. [2024-01-31 16:05:35,554 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 249 transitions, 3214 flow [2024-01-31 16:05:35,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 36.55555555555556) internal successors, (329), 9 states have internal predecessors, (329), 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) [2024-01-31 16:05:35,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:35,554 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] [2024-01-31 16:05:35,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-01-31 16:05:35,554 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:05:35,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:35,555 INFO L85 PathProgramCache]: Analyzing trace with hash 313663366, now seen corresponding path program 1 times [2024-01-31 16:05:35,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:35,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018127566] [2024-01-31 16:05:35,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:35,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:35,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:35,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:35,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:35,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018127566] [2024-01-31 16:05:35,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018127566] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:35,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:35,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:05:35,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528243428] [2024-01-31 16:05:35,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:35,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:05:35,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:35,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:05:35,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:05:35,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 81 [2024-01-31 16:05:35,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 249 transitions, 3214 flow. Second operand has 8 states, 8 states have (on average 36.625) internal successors, (293), 8 states have internal predecessors, (293), 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) [2024-01-31 16:05:35,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:35,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 81 [2024-01-31 16:05:35,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:36,482 INFO L124 PetriNetUnfolderBase]: 2089/4259 cut-off events. [2024-01-31 16:05:36,482 INFO L125 PetriNetUnfolderBase]: For 42295/42550 co-relation queries the response was YES. [2024-01-31 16:05:36,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19193 conditions, 4259 events. 2089/4259 cut-off events. For 42295/42550 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 31050 event pairs, 584 based on Foata normal form. 124/4200 useless extension candidates. Maximal degree in co-relation 19105. Up to 1732 conditions per place. [2024-01-31 16:05:36,525 INFO L140 encePairwiseOnDemand]: 72/81 looper letters, 180 selfloop transitions, 75 changer transitions 0/301 dead transitions. [2024-01-31 16:05:36,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 301 transitions, 4098 flow [2024-01-31 16:05:36,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:05:36,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:05:36,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 349 transitions. [2024-01-31 16:05:36,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6155202821869489 [2024-01-31 16:05:36,526 INFO L175 Difference]: Start difference. First operand has 227 places, 249 transitions, 3214 flow. Second operand 7 states and 349 transitions. [2024-01-31 16:05:36,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 301 transitions, 4098 flow [2024-01-31 16:05:36,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 301 transitions, 4006 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-01-31 16:05:36,600 INFO L231 Difference]: Finished difference. Result has 232 places, 255 transitions, 3394 flow [2024-01-31 16:05:36,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=3122, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3394, PETRI_PLACES=232, PETRI_TRANSITIONS=255} [2024-01-31 16:05:36,601 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 147 predicate places. [2024-01-31 16:05:36,601 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 255 transitions, 3394 flow [2024-01-31 16:05:36,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 36.625) internal successors, (293), 8 states have internal predecessors, (293), 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) [2024-01-31 16:05:36,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:36,601 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] [2024-01-31 16:05:36,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-01-31 16:05:36,602 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:05:36,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:36,602 INFO L85 PathProgramCache]: Analyzing trace with hash 314350636, now seen corresponding path program 2 times [2024-01-31 16:05:36,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:36,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727883509] [2024-01-31 16:05:36,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:36,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:36,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:36,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:36,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:36,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727883509] [2024-01-31 16:05:36,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727883509] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:36,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:36,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:05:36,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889812467] [2024-01-31 16:05:36,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:36,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:05:36,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:36,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:05:36,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:05:36,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 81 [2024-01-31 16:05:36,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 255 transitions, 3394 flow. Second operand has 8 states, 8 states have (on average 36.625) internal successors, (293), 8 states have internal predecessors, (293), 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) [2024-01-31 16:05:36,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:36,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 81 [2024-01-31 16:05:36,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:37,527 INFO L124 PetriNetUnfolderBase]: 2057/4227 cut-off events. [2024-01-31 16:05:37,527 INFO L125 PetriNetUnfolderBase]: For 43208/43455 co-relation queries the response was YES. [2024-01-31 16:05:37,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19553 conditions, 4227 events. 2057/4227 cut-off events. For 43208/43455 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 30879 event pairs, 544 based on Foata normal form. 76/4106 useless extension candidates. Maximal degree in co-relation 19462. Up to 1724 conditions per place. [2024-01-31 16:05:37,564 INFO L140 encePairwiseOnDemand]: 73/81 looper letters, 168 selfloop transitions, 81 changer transitions 0/295 dead transitions. [2024-01-31 16:05:37,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 295 transitions, 4158 flow [2024-01-31 16:05:37,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:05:37,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:05:37,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 341 transitions. [2024-01-31 16:05:37,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6014109347442681 [2024-01-31 16:05:37,565 INFO L175 Difference]: Start difference. First operand has 232 places, 255 transitions, 3394 flow. Second operand 7 states and 341 transitions. [2024-01-31 16:05:37,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 295 transitions, 4158 flow [2024-01-31 16:05:37,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 295 transitions, 4060 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-01-31 16:05:37,642 INFO L231 Difference]: Finished difference. Result has 236 places, 255 transitions, 3464 flow [2024-01-31 16:05:37,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=3296, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3464, PETRI_PLACES=236, PETRI_TRANSITIONS=255} [2024-01-31 16:05:37,643 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 151 predicate places. [2024-01-31 16:05:37,643 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 255 transitions, 3464 flow [2024-01-31 16:05:37,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 36.625) internal successors, (293), 8 states have internal predecessors, (293), 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) [2024-01-31 16:05:37,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:37,643 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] [2024-01-31 16:05:37,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-01-31 16:05:37,644 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:05:37,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:37,644 INFO L85 PathProgramCache]: Analyzing trace with hash -247735102, now seen corresponding path program 1 times [2024-01-31 16:05:37,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:37,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784015399] [2024-01-31 16:05:37,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:37,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:37,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:37,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:37,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:37,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784015399] [2024-01-31 16:05:37,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784015399] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:37,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:37,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:05:37,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920038594] [2024-01-31 16:05:37,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:37,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:05:37,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:37,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:05:37,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:05:37,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 81 [2024-01-31 16:05:37,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 255 transitions, 3464 flow. Second operand has 8 states, 8 states have (on average 36.625) internal successors, (293), 8 states have internal predecessors, (293), 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) [2024-01-31 16:05:37,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:37,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 81 [2024-01-31 16:05:37,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:38,594 INFO L124 PetriNetUnfolderBase]: 2073/4265 cut-off events. [2024-01-31 16:05:38,594 INFO L125 PetriNetUnfolderBase]: For 43518/43779 co-relation queries the response was YES. [2024-01-31 16:05:38,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19833 conditions, 4265 events. 2073/4265 cut-off events. For 43518/43779 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 31258 event pairs, 527 based on Foata normal form. 73/4159 useless extension candidates. Maximal degree in co-relation 19741. Up to 2175 conditions per place. [2024-01-31 16:05:38,635 INFO L140 encePairwiseOnDemand]: 73/81 looper letters, 190 selfloop transitions, 73 changer transitions 0/309 dead transitions. [2024-01-31 16:05:38,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 309 transitions, 4397 flow [2024-01-31 16:05:38,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:05:38,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:05:38,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 374 transitions. [2024-01-31 16:05:38,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5771604938271605 [2024-01-31 16:05:38,636 INFO L175 Difference]: Start difference. First operand has 236 places, 255 transitions, 3464 flow. Second operand 8 states and 374 transitions. [2024-01-31 16:05:38,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 309 transitions, 4397 flow [2024-01-31 16:05:38,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 309 transitions, 4219 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-01-31 16:05:38,727 INFO L231 Difference]: Finished difference. Result has 240 places, 261 transitions, 3532 flow [2024-01-31 16:05:38,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=3295, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3532, PETRI_PLACES=240, PETRI_TRANSITIONS=261} [2024-01-31 16:05:38,728 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 155 predicate places. [2024-01-31 16:05:38,728 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 261 transitions, 3532 flow [2024-01-31 16:05:38,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 36.625) internal successors, (293), 8 states have internal predecessors, (293), 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) [2024-01-31 16:05:38,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:38,732 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] [2024-01-31 16:05:38,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-01-31 16:05:38,733 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:05:38,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:38,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1148840926, now seen corresponding path program 1 times [2024-01-31 16:05:38,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:38,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807172988] [2024-01-31 16:05:38,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:38,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:38,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:39,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:39,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:39,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807172988] [2024-01-31 16:05:39,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807172988] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:39,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:39,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:39,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854496284] [2024-01-31 16:05:39,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:39,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:05:39,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:39,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:05:39,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:05:39,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:05:39,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 261 transitions, 3532 flow. Second operand has 9 states, 9 states have (on average 24.666666666666668) internal successors, (222), 9 states have internal predecessors, (222), 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) [2024-01-31 16:05:39,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:39,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:05:39,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:39,983 INFO L124 PetriNetUnfolderBase]: 2817/5319 cut-off events. [2024-01-31 16:05:39,983 INFO L125 PetriNetUnfolderBase]: For 47217/47448 co-relation queries the response was YES. [2024-01-31 16:05:40,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24449 conditions, 5319 events. 2817/5319 cut-off events. For 47217/47448 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 37151 event pairs, 781 based on Foata normal form. 57/5196 useless extension candidates. Maximal degree in co-relation 24354. Up to 4143 conditions per place. [2024-01-31 16:05:40,030 INFO L140 encePairwiseOnDemand]: 69/81 looper letters, 235 selfloop transitions, 52 changer transitions 0/314 dead transitions. [2024-01-31 16:05:40,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 314 transitions, 4369 flow [2024-01-31 16:05:40,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:05:40,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:05:40,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 266 transitions. [2024-01-31 16:05:40,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4691358024691358 [2024-01-31 16:05:40,031 INFO L175 Difference]: Start difference. First operand has 240 places, 261 transitions, 3532 flow. Second operand 7 states and 266 transitions. [2024-01-31 16:05:40,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 314 transitions, 4369 flow [2024-01-31 16:05:40,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 314 transitions, 4209 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-01-31 16:05:40,127 INFO L231 Difference]: Finished difference. Result has 243 places, 275 transitions, 3642 flow [2024-01-31 16:05:40,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=3372, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3642, PETRI_PLACES=243, PETRI_TRANSITIONS=275} [2024-01-31 16:05:40,128 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 158 predicate places. [2024-01-31 16:05:40,128 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 275 transitions, 3642 flow [2024-01-31 16:05:40,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.666666666666668) internal successors, (222), 9 states have internal predecessors, (222), 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) [2024-01-31 16:05:40,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:40,128 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] [2024-01-31 16:05:40,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-01-31 16:05:40,128 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:05:40,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:40,128 INFO L85 PathProgramCache]: Analyzing trace with hash -760618388, now seen corresponding path program 2 times [2024-01-31 16:05:40,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:40,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444837201] [2024-01-31 16:05:40,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:40,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:40,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:40,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:40,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:40,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444837201] [2024-01-31 16:05:40,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444837201] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:40,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:40,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:40,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663165689] [2024-01-31 16:05:40,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:40,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:05:40,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:40,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:05:40,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:05:40,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:05:40,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 275 transitions, 3642 flow. Second operand has 9 states, 9 states have (on average 24.666666666666668) internal successors, (222), 9 states have internal predecessors, (222), 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) [2024-01-31 16:05:40,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:40,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:05:40,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:41,281 INFO L124 PetriNetUnfolderBase]: 2787/5245 cut-off events. [2024-01-31 16:05:41,282 INFO L125 PetriNetUnfolderBase]: For 47061/47296 co-relation queries the response was YES. [2024-01-31 16:05:41,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24543 conditions, 5245 events. 2787/5245 cut-off events. For 47061/47296 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 36455 event pairs, 780 based on Foata normal form. 75/5145 useless extension candidates. Maximal degree in co-relation 24446. Up to 4151 conditions per place. [2024-01-31 16:05:41,338 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 231 selfloop transitions, 42 changer transitions 0/300 dead transitions. [2024-01-31 16:05:41,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 300 transitions, 4272 flow [2024-01-31 16:05:41,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:05:41,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:05:41,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 220 transitions. [2024-01-31 16:05:41,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45267489711934156 [2024-01-31 16:05:41,339 INFO L175 Difference]: Start difference. First operand has 243 places, 275 transitions, 3642 flow. Second operand 6 states and 220 transitions. [2024-01-31 16:05:41,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 300 transitions, 4272 flow [2024-01-31 16:05:41,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 300 transitions, 4212 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-01-31 16:05:41,470 INFO L231 Difference]: Finished difference. Result has 245 places, 275 transitions, 3679 flow [2024-01-31 16:05:41,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=3586, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3679, PETRI_PLACES=245, PETRI_TRANSITIONS=275} [2024-01-31 16:05:41,470 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 160 predicate places. [2024-01-31 16:05:41,470 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 275 transitions, 3679 flow [2024-01-31 16:05:41,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.666666666666668) internal successors, (222), 9 states have internal predecessors, (222), 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) [2024-01-31 16:05:41,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:41,471 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] [2024-01-31 16:05:41,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-01-31 16:05:41,471 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:05:41,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:41,471 INFO L85 PathProgramCache]: Analyzing trace with hash 189667652, now seen corresponding path program 2 times [2024-01-31 16:05:41,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:41,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893224864] [2024-01-31 16:05:41,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:41,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:41,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:41,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:41,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:41,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893224864] [2024-01-31 16:05:41,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893224864] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:41,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:41,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:05:41,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345680308] [2024-01-31 16:05:41,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:41,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:05:41,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:41,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:05:41,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:05:41,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 81 [2024-01-31 16:05:41,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 275 transitions, 3679 flow. Second operand has 8 states, 8 states have (on average 36.625) internal successors, (293), 8 states have internal predecessors, (293), 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) [2024-01-31 16:05:41,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:41,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 81 [2024-01-31 16:05:41,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:42,431 INFO L124 PetriNetUnfolderBase]: 2160/4445 cut-off events. [2024-01-31 16:05:42,431 INFO L125 PetriNetUnfolderBase]: For 44791/45069 co-relation queries the response was YES. [2024-01-31 16:05:42,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20437 conditions, 4445 events. 2160/4445 cut-off events. For 44791/45069 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 32847 event pairs, 534 based on Foata normal form. 81/4326 useless extension candidates. Maximal degree in co-relation 20341. Up to 2179 conditions per place. [2024-01-31 16:05:42,474 INFO L140 encePairwiseOnDemand]: 74/81 looper letters, 201 selfloop transitions, 75 changer transitions 0/322 dead transitions. [2024-01-31 16:05:42,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 322 transitions, 4579 flow [2024-01-31 16:05:42,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:05:42,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:05:42,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 333 transitions. [2024-01-31 16:05:42,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5873015873015873 [2024-01-31 16:05:42,475 INFO L175 Difference]: Start difference. First operand has 245 places, 275 transitions, 3679 flow. Second operand 7 states and 333 transitions. [2024-01-31 16:05:42,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 322 transitions, 4579 flow [2024-01-31 16:05:42,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 322 transitions, 4495 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-01-31 16:05:42,573 INFO L231 Difference]: Finished difference. Result has 248 places, 279 transitions, 3813 flow [2024-01-31 16:05:42,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=3595, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3813, PETRI_PLACES=248, PETRI_TRANSITIONS=279} [2024-01-31 16:05:42,573 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 163 predicate places. [2024-01-31 16:05:42,573 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 279 transitions, 3813 flow [2024-01-31 16:05:42,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 36.625) internal successors, (293), 8 states have internal predecessors, (293), 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) [2024-01-31 16:05:42,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:42,574 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] [2024-01-31 16:05:42,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-01-31 16:05:42,574 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:05:42,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:42,574 INFO L85 PathProgramCache]: Analyzing trace with hash 73090734, now seen corresponding path program 3 times [2024-01-31 16:05:42,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:42,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279172375] [2024-01-31 16:05:42,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:42,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:42,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:42,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:42,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:42,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279172375] [2024-01-31 16:05:42,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279172375] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:42,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:42,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:05:42,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99544647] [2024-01-31 16:05:42,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:42,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:05:42,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:42,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:05:42,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:05:42,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 81 [2024-01-31 16:05:42,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 279 transitions, 3813 flow. Second operand has 8 states, 8 states have (on average 36.625) internal successors, (293), 8 states have internal predecessors, (293), 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) [2024-01-31 16:05:42,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:42,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 81 [2024-01-31 16:05:42,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:43,513 INFO L124 PetriNetUnfolderBase]: 2146/4434 cut-off events. [2024-01-31 16:05:43,513 INFO L125 PetriNetUnfolderBase]: For 46217/46491 co-relation queries the response was YES. [2024-01-31 16:05:43,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20568 conditions, 4434 events. 2146/4434 cut-off events. For 46217/46491 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 32849 event pairs, 472 based on Foata normal form. 81/4313 useless extension candidates. Maximal degree in co-relation 20472. Up to 2176 conditions per place. [2024-01-31 16:05:43,557 INFO L140 encePairwiseOnDemand]: 74/81 looper letters, 197 selfloop transitions, 78 changer transitions 0/321 dead transitions. [2024-01-31 16:05:43,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 321 transitions, 4642 flow [2024-01-31 16:05:43,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:05:43,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:05:43,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 330 transitions. [2024-01-31 16:05:43,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.582010582010582 [2024-01-31 16:05:43,558 INFO L175 Difference]: Start difference. First operand has 248 places, 279 transitions, 3813 flow. Second operand 7 states and 330 transitions. [2024-01-31 16:05:43,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 321 transitions, 4642 flow [2024-01-31 16:05:43,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 321 transitions, 4509 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-01-31 16:05:43,658 INFO L231 Difference]: Finished difference. Result has 250 places, 280 transitions, 3851 flow [2024-01-31 16:05:43,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=3681, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3851, PETRI_PLACES=250, PETRI_TRANSITIONS=280} [2024-01-31 16:05:43,659 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 165 predicate places. [2024-01-31 16:05:43,659 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 280 transitions, 3851 flow [2024-01-31 16:05:43,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 36.625) internal successors, (293), 8 states have internal predecessors, (293), 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) [2024-01-31 16:05:43,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:43,659 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] [2024-01-31 16:05:43,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-01-31 16:05:43,659 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:05:43,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:43,660 INFO L85 PathProgramCache]: Analyzing trace with hash -161055270, now seen corresponding path program 1 times [2024-01-31 16:05:43,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:43,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919442969] [2024-01-31 16:05:43,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:43,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:43,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:43,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:43,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:43,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919442969] [2024-01-31 16:05:43,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919442969] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:43,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:43,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:05:43,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733553038] [2024-01-31 16:05:43,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:43,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:05:43,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:43,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:05:43,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:05:43,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 81 [2024-01-31 16:05:43,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 280 transitions, 3851 flow. Second operand has 8 states, 8 states have (on average 36.625) internal successors, (293), 8 states have internal predecessors, (293), 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) [2024-01-31 16:05:43,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:43,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 81 [2024-01-31 16:05:43,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:44,695 INFO L124 PetriNetUnfolderBase]: 2233/4650 cut-off events. [2024-01-31 16:05:44,695 INFO L125 PetriNetUnfolderBase]: For 47315/47597 co-relation queries the response was YES. [2024-01-31 16:05:44,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21264 conditions, 4650 events. 2233/4650 cut-off events. For 47315/47597 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 34867 event pairs, 548 based on Foata normal form. 74/4485 useless extension candidates. Maximal degree in co-relation 21168. Up to 2134 conditions per place. [2024-01-31 16:05:44,735 INFO L140 encePairwiseOnDemand]: 72/81 looper letters, 240 selfloop transitions, 89 changer transitions 0/375 dead transitions. [2024-01-31 16:05:44,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 375 transitions, 5321 flow [2024-01-31 16:05:44,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:05:44,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:05:44,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 386 transitions. [2024-01-31 16:05:44,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.595679012345679 [2024-01-31 16:05:44,736 INFO L175 Difference]: Start difference. First operand has 250 places, 280 transitions, 3851 flow. Second operand 8 states and 386 transitions. [2024-01-31 16:05:44,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 375 transitions, 5321 flow [2024-01-31 16:05:44,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 375 transitions, 5193 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-01-31 16:05:44,824 INFO L231 Difference]: Finished difference. Result has 258 places, 311 transitions, 4330 flow [2024-01-31 16:05:44,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=3731, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4330, PETRI_PLACES=258, PETRI_TRANSITIONS=311} [2024-01-31 16:05:44,825 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 173 predicate places. [2024-01-31 16:05:44,825 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 311 transitions, 4330 flow [2024-01-31 16:05:44,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 36.625) internal successors, (293), 8 states have internal predecessors, (293), 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) [2024-01-31 16:05:44,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:44,825 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] [2024-01-31 16:05:44,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-01-31 16:05:44,825 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:05:44,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:44,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1780834966, now seen corresponding path program 3 times [2024-01-31 16:05:44,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:44,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939645672] [2024-01-31 16:05:44,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:44,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:44,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:45,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:45,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:45,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939645672] [2024-01-31 16:05:45,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939645672] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:45,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:45,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:45,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829873093] [2024-01-31 16:05:45,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:45,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:05:45,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:45,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:05:45,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:05:45,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:05:45,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 311 transitions, 4330 flow. Second operand has 9 states, 9 states have (on average 24.666666666666668) internal successors, (222), 9 states have internal predecessors, (222), 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) [2024-01-31 16:05:45,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:45,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:05:45,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:46,071 INFO L124 PetriNetUnfolderBase]: 2826/5466 cut-off events. [2024-01-31 16:05:46,072 INFO L125 PetriNetUnfolderBase]: For 54178/54410 co-relation queries the response was YES. [2024-01-31 16:05:46,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25707 conditions, 5466 events. 2826/5466 cut-off events. For 54178/54410 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 38958 event pairs, 1030 based on Foata normal form. 55/5295 useless extension candidates. Maximal degree in co-relation 25606. Up to 4273 conditions per place. [2024-01-31 16:05:46,132 INFO L140 encePairwiseOnDemand]: 75/81 looper letters, 273 selfloop transitions, 40 changer transitions 0/340 dead transitions. [2024-01-31 16:05:46,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 340 transitions, 5061 flow [2024-01-31 16:05:46,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:05:46,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:05:46,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 226 transitions. [2024-01-31 16:05:46,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46502057613168724 [2024-01-31 16:05:46,133 INFO L175 Difference]: Start difference. First operand has 258 places, 311 transitions, 4330 flow. Second operand 6 states and 226 transitions. [2024-01-31 16:05:46,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 340 transitions, 5061 flow [2024-01-31 16:05:46,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 340 transitions, 4922 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-01-31 16:05:46,299 INFO L231 Difference]: Finished difference. Result has 253 places, 310 transitions, 4257 flow [2024-01-31 16:05:46,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=4177, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4257, PETRI_PLACES=253, PETRI_TRANSITIONS=310} [2024-01-31 16:05:46,300 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 168 predicate places. [2024-01-31 16:05:46,300 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 310 transitions, 4257 flow [2024-01-31 16:05:46,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.666666666666668) internal successors, (222), 9 states have internal predecessors, (222), 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) [2024-01-31 16:05:46,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:46,300 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] [2024-01-31 16:05:46,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-01-31 16:05:46,301 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:05:46,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:46,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1147342028, now seen corresponding path program 1 times [2024-01-31 16:05:46,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:46,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214436354] [2024-01-31 16:05:46,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:46,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:46,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:46,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:46,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:46,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214436354] [2024-01-31 16:05:46,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214436354] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:46,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:46,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:46,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78204446] [2024-01-31 16:05:46,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:46,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:05:46,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:46,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:05:46,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:05:46,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:05:46,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 310 transitions, 4257 flow. Second operand has 9 states, 9 states have (on average 24.666666666666668) internal successors, (222), 9 states have internal predecessors, (222), 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) [2024-01-31 16:05:46,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:46,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:05:46,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:47,495 INFO L124 PetriNetUnfolderBase]: 2976/5696 cut-off events. [2024-01-31 16:05:47,495 INFO L125 PetriNetUnfolderBase]: For 56322/56603 co-relation queries the response was YES. [2024-01-31 16:05:47,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26439 conditions, 5696 events. 2976/5696 cut-off events. For 56322/56603 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 40321 event pairs, 1088 based on Foata normal form. 86/5526 useless extension candidates. Maximal degree in co-relation 26345. Up to 4501 conditions per place. [2024-01-31 16:05:47,545 INFO L140 encePairwiseOnDemand]: 69/81 looper letters, 281 selfloop transitions, 62 changer transitions 0/370 dead transitions. [2024-01-31 16:05:47,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 370 transitions, 5414 flow [2024-01-31 16:05:47,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:05:47,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:05:47,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 315 transitions. [2024-01-31 16:05:47,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43209876543209874 [2024-01-31 16:05:47,546 INFO L175 Difference]: Start difference. First operand has 253 places, 310 transitions, 4257 flow. Second operand 9 states and 315 transitions. [2024-01-31 16:05:47,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 370 transitions, 5414 flow [2024-01-31 16:05:47,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 370 transitions, 5308 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-31 16:05:47,692 INFO L231 Difference]: Finished difference. Result has 260 places, 336 transitions, 4690 flow [2024-01-31 16:05:47,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=4155, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4690, PETRI_PLACES=260, PETRI_TRANSITIONS=336} [2024-01-31 16:05:47,693 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 175 predicate places. [2024-01-31 16:05:47,693 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 336 transitions, 4690 flow [2024-01-31 16:05:47,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.666666666666668) internal successors, (222), 9 states have internal predecessors, (222), 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) [2024-01-31 16:05:47,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:47,693 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] [2024-01-31 16:05:47,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-01-31 16:05:47,694 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:05:47,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:47,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1964447908, now seen corresponding path program 3 times [2024-01-31 16:05:47,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:47,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175714388] [2024-01-31 16:05:47,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:47,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:47,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:47,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:47,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:47,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175714388] [2024-01-31 16:05:47,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175714388] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:47,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:47,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:05:47,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653523318] [2024-01-31 16:05:47,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:47,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:05:47,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:47,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:05:47,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:05:47,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 81 [2024-01-31 16:05:47,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 336 transitions, 4690 flow. Second operand has 8 states, 8 states have (on average 36.625) internal successors, (293), 8 states have internal predecessors, (293), 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) [2024-01-31 16:05:47,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:47,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 81 [2024-01-31 16:05:47,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:48,768 INFO L124 PetriNetUnfolderBase]: 2500/5041 cut-off events. [2024-01-31 16:05:48,769 INFO L125 PetriNetUnfolderBase]: For 57399/57704 co-relation queries the response was YES. [2024-01-31 16:05:48,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24273 conditions, 5041 events. 2500/5041 cut-off events. For 57399/57704 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 37521 event pairs, 628 based on Foata normal form. 68/4856 useless extension candidates. Maximal degree in co-relation 24176. Up to 2173 conditions per place. [2024-01-31 16:05:48,821 INFO L140 encePairwiseOnDemand]: 73/81 looper letters, 211 selfloop transitions, 118 changer transitions 0/376 dead transitions. [2024-01-31 16:05:48,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 376 transitions, 5653 flow [2024-01-31 16:05:48,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:05:48,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:05:48,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 338 transitions. [2024-01-31 16:05:48,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5961199294532628 [2024-01-31 16:05:48,822 INFO L175 Difference]: Start difference. First operand has 260 places, 336 transitions, 4690 flow. Second operand 7 states and 338 transitions. [2024-01-31 16:05:48,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 376 transitions, 5653 flow [2024-01-31 16:05:48,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 376 transitions, 5632 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-01-31 16:05:48,970 INFO L231 Difference]: Finished difference. Result has 266 places, 338 transitions, 4939 flow [2024-01-31 16:05:48,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=4669, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4939, PETRI_PLACES=266, PETRI_TRANSITIONS=338} [2024-01-31 16:05:48,971 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 181 predicate places. [2024-01-31 16:05:48,971 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 338 transitions, 4939 flow [2024-01-31 16:05:48,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 36.625) internal successors, (293), 8 states have internal predecessors, (293), 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) [2024-01-31 16:05:48,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:48,971 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] [2024-01-31 16:05:48,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-01-31 16:05:48,971 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting P1Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:05:48,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:48,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1326070699, now seen corresponding path program 1 times [2024-01-31 16:05:48,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:48,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667123121] [2024-01-31 16:05:48,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:48,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:48,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:49,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:49,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:49,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667123121] [2024-01-31 16:05:49,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667123121] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:49,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:49,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:49,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840383160] [2024-01-31 16:05:49,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:49,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:05:49,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:49,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:05:49,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:05:49,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:05:49,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 338 transitions, 4939 flow. Second operand has 9 states, 9 states have (on average 24.88888888888889) internal successors, (224), 9 states have internal predecessors, (224), 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) [2024-01-31 16:05:49,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:49,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:05:49,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:50,331 INFO L124 PetriNetUnfolderBase]: 3100/5881 cut-off events. [2024-01-31 16:05:50,332 INFO L125 PetriNetUnfolderBase]: For 63776/64050 co-relation queries the response was YES. [2024-01-31 16:05:50,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28611 conditions, 5881 events. 3100/5881 cut-off events. For 63776/64050 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 41906 event pairs, 1103 based on Foata normal form. 84/5760 useless extension candidates. Maximal degree in co-relation 28512. Up to 4445 conditions per place. [2024-01-31 16:05:50,391 INFO L140 encePairwiseOnDemand]: 71/81 looper letters, 281 selfloop transitions, 54 changer transitions 0/363 dead transitions. [2024-01-31 16:05:50,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 363 transitions, 5741 flow [2024-01-31 16:05:50,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:05:50,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:05:50,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 243 transitions. [2024-01-31 16:05:50,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-01-31 16:05:50,392 INFO L175 Difference]: Start difference. First operand has 266 places, 338 transitions, 4939 flow. Second operand 7 states and 243 transitions. [2024-01-31 16:05:50,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 363 transitions, 5741 flow [2024-01-31 16:05:50,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 363 transitions, 5467 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-01-31 16:05:50,564 INFO L231 Difference]: Finished difference. Result has 268 places, 340 transitions, 4825 flow [2024-01-31 16:05:50,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=4671, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4825, PETRI_PLACES=268, PETRI_TRANSITIONS=340} [2024-01-31 16:05:50,565 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 183 predicate places. [2024-01-31 16:05:50,565 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 340 transitions, 4825 flow [2024-01-31 16:05:50,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.88888888888889) internal successors, (224), 9 states have internal predecessors, (224), 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) [2024-01-31 16:05:50,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:50,565 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] [2024-01-31 16:05:50,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-01-31 16:05:50,566 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:05:50,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:50,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1453089550, now seen corresponding path program 4 times [2024-01-31 16:05:50,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:50,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339842086] [2024-01-31 16:05:50,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:50,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:50,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:50,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:50,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:50,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339842086] [2024-01-31 16:05:50,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339842086] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:50,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:50,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:05:50,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109343759] [2024-01-31 16:05:50,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:50,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:05:50,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:50,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:05:50,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:05:50,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 81 [2024-01-31 16:05:50,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 340 transitions, 4825 flow. Second operand has 8 states, 8 states have (on average 36.625) internal successors, (293), 8 states have internal predecessors, (293), 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) [2024-01-31 16:05:50,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:50,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 81 [2024-01-31 16:05:50,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:51,708 INFO L124 PetriNetUnfolderBase]: 2417/4954 cut-off events. [2024-01-31 16:05:51,708 INFO L125 PetriNetUnfolderBase]: For 56150/56445 co-relation queries the response was YES. [2024-01-31 16:05:51,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23840 conditions, 4954 events. 2417/4954 cut-off events. For 56150/56445 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 37279 event pairs, 597 based on Foata normal form. 68/4769 useless extension candidates. Maximal degree in co-relation 23740. Up to 2142 conditions per place. [2024-01-31 16:05:51,745 INFO L140 encePairwiseOnDemand]: 73/81 looper letters, 227 selfloop transitions, 108 changer transitions 0/382 dead transitions. [2024-01-31 16:05:51,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 382 transitions, 5791 flow [2024-01-31 16:05:51,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:05:51,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:05:51,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 341 transitions. [2024-01-31 16:05:51,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6014109347442681 [2024-01-31 16:05:51,746 INFO L175 Difference]: Start difference. First operand has 268 places, 340 transitions, 4825 flow. Second operand 7 states and 341 transitions. [2024-01-31 16:05:51,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 382 transitions, 5791 flow [2024-01-31 16:05:51,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 382 transitions, 5623 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-01-31 16:05:51,875 INFO L231 Difference]: Finished difference. Result has 268 places, 340 transitions, 4893 flow [2024-01-31 16:05:51,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=4669, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4893, PETRI_PLACES=268, PETRI_TRANSITIONS=340} [2024-01-31 16:05:51,876 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 183 predicate places. [2024-01-31 16:05:51,876 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 340 transitions, 4893 flow [2024-01-31 16:05:51,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 36.625) internal successors, (293), 8 states have internal predecessors, (293), 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) [2024-01-31 16:05:51,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:51,876 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] [2024-01-31 16:05:51,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-01-31 16:05:51,877 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:05:51,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:51,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1963689298, now seen corresponding path program 2 times [2024-01-31 16:05:51,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:51,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885183000] [2024-01-31 16:05:51,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:51,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:51,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:52,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:52,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:52,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885183000] [2024-01-31 16:05:52,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885183000] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:52,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:52,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:05:52,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588160323] [2024-01-31 16:05:52,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:52,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:05:52,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:52,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:05:52,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:05:52,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 81 [2024-01-31 16:05:52,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 340 transitions, 4893 flow. Second operand has 8 states, 8 states have (on average 36.625) internal successors, (293), 8 states have internal predecessors, (293), 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) [2024-01-31 16:05:52,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:52,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 81 [2024-01-31 16:05:52,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:52,890 INFO L124 PetriNetUnfolderBase]: 2438/5045 cut-off events. [2024-01-31 16:05:52,890 INFO L125 PetriNetUnfolderBase]: For 54871/55157 co-relation queries the response was YES. [2024-01-31 16:05:52,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23985 conditions, 5045 events. 2438/5045 cut-off events. For 54871/55157 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 38174 event pairs, 522 based on Foata normal form. 57/4857 useless extension candidates. Maximal degree in co-relation 23886. Up to 2320 conditions per place. [2024-01-31 16:05:52,939 INFO L140 encePairwiseOnDemand]: 72/81 looper letters, 263 selfloop transitions, 98 changer transitions 0/408 dead transitions. [2024-01-31 16:05:52,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 408 transitions, 6194 flow [2024-01-31 16:05:52,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:05:52,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:05:52,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 384 transitions. [2024-01-31 16:05:52,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5925925925925926 [2024-01-31 16:05:52,941 INFO L175 Difference]: Start difference. First operand has 268 places, 340 transitions, 4893 flow. Second operand 8 states and 384 transitions. [2024-01-31 16:05:52,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 408 transitions, 6194 flow [2024-01-31 16:05:53,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 408 transitions, 5966 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-01-31 16:05:53,077 INFO L231 Difference]: Finished difference. Result has 272 places, 345 transitions, 4942 flow [2024-01-31 16:05:53,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=4681, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4942, PETRI_PLACES=272, PETRI_TRANSITIONS=345} [2024-01-31 16:05:53,078 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 187 predicate places. [2024-01-31 16:05:53,078 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 345 transitions, 4942 flow [2024-01-31 16:05:53,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 36.625) internal successors, (293), 8 states have internal predecessors, (293), 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) [2024-01-31 16:05:53,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:53,079 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] [2024-01-31 16:05:53,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-01-31 16:05:53,079 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:05:53,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:53,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1274294710, now seen corresponding path program 3 times [2024-01-31 16:05:53,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:53,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689608950] [2024-01-31 16:05:53,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:53,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:53,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:53,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:53,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:53,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689608950] [2024-01-31 16:05:53,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689608950] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:53,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:53,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:05:53,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338734361] [2024-01-31 16:05:53,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:53,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:05:53,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:53,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:05:53,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:05:53,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 81 [2024-01-31 16:05:53,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 345 transitions, 4942 flow. Second operand has 8 states, 8 states have (on average 36.625) internal successors, (293), 8 states have internal predecessors, (293), 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) [2024-01-31 16:05:53,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:53,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 81 [2024-01-31 16:05:53,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:54,312 INFO L124 PetriNetUnfolderBase]: 2489/5076 cut-off events. [2024-01-31 16:05:54,312 INFO L125 PetriNetUnfolderBase]: For 55698/55991 co-relation queries the response was YES. [2024-01-31 16:05:54,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24416 conditions, 5076 events. 2489/5076 cut-off events. For 55698/55991 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 38163 event pairs, 797 based on Foata normal form. 59/4912 useless extension candidates. Maximal degree in co-relation 24315. Up to 3502 conditions per place. [2024-01-31 16:05:54,364 INFO L140 encePairwiseOnDemand]: 73/81 looper letters, 263 selfloop transitions, 72 changer transitions 0/382 dead transitions. [2024-01-31 16:05:54,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 382 transitions, 5905 flow [2024-01-31 16:05:54,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:05:54,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:05:54,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 362 transitions. [2024-01-31 16:05:54,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.558641975308642 [2024-01-31 16:05:54,366 INFO L175 Difference]: Start difference. First operand has 272 places, 345 transitions, 4942 flow. Second operand 8 states and 362 transitions. [2024-01-31 16:05:54,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 382 transitions, 5905 flow [2024-01-31 16:05:54,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 382 transitions, 5758 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-01-31 16:05:54,522 INFO L231 Difference]: Finished difference. Result has 278 places, 353 transitions, 5081 flow [2024-01-31 16:05:54,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=4797, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5081, PETRI_PLACES=278, PETRI_TRANSITIONS=353} [2024-01-31 16:05:54,523 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 193 predicate places. [2024-01-31 16:05:54,523 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 353 transitions, 5081 flow [2024-01-31 16:05:54,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 36.625) internal successors, (293), 8 states have internal predecessors, (293), 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) [2024-01-31 16:05:54,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:54,523 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] [2024-01-31 16:05:54,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-01-31 16:05:54,524 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:05:54,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:54,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1274253790, now seen corresponding path program 4 times [2024-01-31 16:05:54,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:54,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941822616] [2024-01-31 16:05:54,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:54,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:54,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:54,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:54,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:54,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941822616] [2024-01-31 16:05:54,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941822616] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:54,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:54,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:05:54,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433496782] [2024-01-31 16:05:54,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:54,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:05:54,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:54,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:05:54,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:05:54,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 81 [2024-01-31 16:05:54,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 353 transitions, 5081 flow. Second operand has 8 states, 8 states have (on average 36.625) internal successors, (293), 8 states have internal predecessors, (293), 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) [2024-01-31 16:05:54,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:54,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 81 [2024-01-31 16:05:54,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:55,856 INFO L124 PetriNetUnfolderBase]: 2477/5056 cut-off events. [2024-01-31 16:05:55,856 INFO L125 PetriNetUnfolderBase]: For 55822/56113 co-relation queries the response was YES. [2024-01-31 16:05:55,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24196 conditions, 5056 events. 2477/5056 cut-off events. For 55822/56113 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 37990 event pairs, 791 based on Foata normal form. 59/4892 useless extension candidates. Maximal degree in co-relation 24092. Up to 3500 conditions per place. [2024-01-31 16:05:55,911 INFO L140 encePairwiseOnDemand]: 73/81 looper letters, 260 selfloop transitions, 78 changer transitions 0/385 dead transitions. [2024-01-31 16:05:55,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 385 transitions, 5929 flow [2024-01-31 16:05:55,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 16:05:55,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 16:05:55,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 438 transitions. [2024-01-31 16:05:55,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5407407407407407 [2024-01-31 16:05:55,913 INFO L175 Difference]: Start difference. First operand has 278 places, 353 transitions, 5081 flow. Second operand 10 states and 438 transitions. [2024-01-31 16:05:55,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 385 transitions, 5929 flow [2024-01-31 16:05:56,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 385 transitions, 5815 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-01-31 16:05:56,075 INFO L231 Difference]: Finished difference. Result has 284 places, 354 transitions, 5142 flow [2024-01-31 16:05:56,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=4970, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5142, PETRI_PLACES=284, PETRI_TRANSITIONS=354} [2024-01-31 16:05:56,076 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 199 predicate places. [2024-01-31 16:05:56,076 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 354 transitions, 5142 flow [2024-01-31 16:05:56,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 36.625) internal successors, (293), 8 states have internal predecessors, (293), 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) [2024-01-31 16:05:56,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:56,076 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] [2024-01-31 16:05:56,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-01-31 16:05:56,076 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:05:56,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:56,077 INFO L85 PathProgramCache]: Analyzing trace with hash 303594010, now seen corresponding path program 1 times [2024-01-31 16:05:56,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:56,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512846396] [2024-01-31 16:05:56,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:56,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:56,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:56,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:56,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:56,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512846396] [2024-01-31 16:05:56,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512846396] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:56,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:56,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:56,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397417443] [2024-01-31 16:05:56,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:56,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:05:56,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:56,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:05:56,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:05:56,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 81 [2024-01-31 16:05:56,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 354 transitions, 5142 flow. Second operand has 9 states, 9 states have (on average 36.666666666666664) internal successors, (330), 9 states have internal predecessors, (330), 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) [2024-01-31 16:05:56,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:56,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 81 [2024-01-31 16:05:56,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:57,281 INFO L124 PetriNetUnfolderBase]: 2473/5080 cut-off events. [2024-01-31 16:05:57,281 INFO L125 PetriNetUnfolderBase]: For 55751/56043 co-relation queries the response was YES. [2024-01-31 16:05:57,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24304 conditions, 5080 events. 2473/5080 cut-off events. For 55751/56043 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 38297 event pairs, 755 based on Foata normal form. 65/4916 useless extension candidates. Maximal degree in co-relation 24199. Up to 3716 conditions per place. [2024-01-31 16:05:57,324 INFO L140 encePairwiseOnDemand]: 74/81 looper letters, 273 selfloop transitions, 52 changer transitions 0/372 dead transitions. [2024-01-31 16:05:57,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 372 transitions, 5851 flow [2024-01-31 16:05:57,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:05:57,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:05:57,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2024-01-31 16:05:57,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5502645502645502 [2024-01-31 16:05:57,325 INFO L175 Difference]: Start difference. First operand has 284 places, 354 transitions, 5142 flow. Second operand 7 states and 312 transitions. [2024-01-31 16:05:57,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 372 transitions, 5851 flow [2024-01-31 16:05:57,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 372 transitions, 5680 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-01-31 16:05:57,473 INFO L231 Difference]: Finished difference. Result has 282 places, 354 transitions, 5082 flow [2024-01-31 16:05:57,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=4971, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5082, PETRI_PLACES=282, PETRI_TRANSITIONS=354} [2024-01-31 16:05:57,473 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 197 predicate places. [2024-01-31 16:05:57,474 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 354 transitions, 5082 flow [2024-01-31 16:05:57,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 36.666666666666664) internal successors, (330), 9 states have internal predecessors, (330), 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) [2024-01-31 16:05:57,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:57,474 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] [2024-01-31 16:05:57,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-01-31 16:05:57,474 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:05:57,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:57,474 INFO L85 PathProgramCache]: Analyzing trace with hash 129680195, now seen corresponding path program 2 times [2024-01-31 16:05:57,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:57,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842734355] [2024-01-31 16:05:57,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:57,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:57,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:57,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:57,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:57,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842734355] [2024-01-31 16:05:57,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842734355] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:57,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:57,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:57,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472945087] [2024-01-31 16:05:57,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:57,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:05:57,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:57,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:05:57,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:05:57,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:05:57,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 354 transitions, 5082 flow. Second operand has 9 states, 9 states have (on average 24.88888888888889) internal successors, (224), 9 states have internal predecessors, (224), 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) [2024-01-31 16:05:57,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:57,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:05:57,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:58,844 INFO L124 PetriNetUnfolderBase]: 3177/6041 cut-off events. [2024-01-31 16:05:58,844 INFO L125 PetriNetUnfolderBase]: For 59700/59990 co-relation queries the response was YES. [2024-01-31 16:05:58,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28510 conditions, 6041 events. 3177/6041 cut-off events. For 59700/59990 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 42718 event pairs, 789 based on Foata normal form. 126/5905 useless extension candidates. Maximal degree in co-relation 28404. Up to 2478 conditions per place. [2024-01-31 16:05:58,911 INFO L140 encePairwiseOnDemand]: 72/81 looper letters, 258 selfloop transitions, 113 changer transitions 0/398 dead transitions. [2024-01-31 16:05:58,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 398 transitions, 6051 flow [2024-01-31 16:05:58,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:05:58,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:05:58,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 273 transitions. [2024-01-31 16:05:58,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-01-31 16:05:58,912 INFO L175 Difference]: Start difference. First operand has 282 places, 354 transitions, 5082 flow. Second operand 7 states and 273 transitions. [2024-01-31 16:05:58,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 398 transitions, 6051 flow [2024-01-31 16:05:59,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 398 transitions, 5977 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-01-31 16:05:59,095 INFO L231 Difference]: Finished difference. Result has 285 places, 354 transitions, 5258 flow [2024-01-31 16:05:59,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=5008, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5258, PETRI_PLACES=285, PETRI_TRANSITIONS=354} [2024-01-31 16:05:59,096 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 200 predicate places. [2024-01-31 16:05:59,096 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 354 transitions, 5258 flow [2024-01-31 16:05:59,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.88888888888889) internal successors, (224), 9 states have internal predecessors, (224), 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) [2024-01-31 16:05:59,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:59,096 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] [2024-01-31 16:05:59,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-01-31 16:05:59,096 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting P1Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:05:59,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:59,096 INFO L85 PathProgramCache]: Analyzing trace with hash -218055759, now seen corresponding path program 2 times [2024-01-31 16:05:59,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:59,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771388407] [2024-01-31 16:05:59,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:59,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:59,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:59,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:59,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:59,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771388407] [2024-01-31 16:05:59,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771388407] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:59,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:59,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:59,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506264901] [2024-01-31 16:05:59,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:59,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:05:59,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:59,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:05:59,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:05:59,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:05:59,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 354 transitions, 5258 flow. Second operand has 9 states, 9 states have (on average 24.88888888888889) internal successors, (224), 9 states have internal predecessors, (224), 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) [2024-01-31 16:05:59,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:59,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:05:59,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:00,524 INFO L124 PetriNetUnfolderBase]: 2930/5632 cut-off events. [2024-01-31 16:06:00,524 INFO L125 PetriNetUnfolderBase]: For 59257/59511 co-relation queries the response was YES. [2024-01-31 16:06:00,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27293 conditions, 5632 events. 2930/5632 cut-off events. For 59257/59511 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 39825 event pairs, 713 based on Foata normal form. 83/5497 useless extension candidates. Maximal degree in co-relation 27186. Up to 2332 conditions per place. [2024-01-31 16:06:00,573 INFO L140 encePairwiseOnDemand]: 66/81 looper letters, 246 selfloop transitions, 133 changer transitions 0/407 dead transitions. [2024-01-31 16:06:00,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 407 transitions, 6322 flow [2024-01-31 16:06:00,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:06:00,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:06:00,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 280 transitions. [2024-01-31 16:06:00,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49382716049382713 [2024-01-31 16:06:00,574 INFO L175 Difference]: Start difference. First operand has 285 places, 354 transitions, 5258 flow. Second operand 7 states and 280 transitions. [2024-01-31 16:06:00,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 407 transitions, 6322 flow [2024-01-31 16:06:00,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 407 transitions, 6092 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-31 16:06:00,780 INFO L231 Difference]: Finished difference. Result has 287 places, 359 transitions, 5426 flow [2024-01-31 16:06:00,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=5032, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5426, PETRI_PLACES=287, PETRI_TRANSITIONS=359} [2024-01-31 16:06:00,781 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 202 predicate places. [2024-01-31 16:06:00,781 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 359 transitions, 5426 flow [2024-01-31 16:06:00,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.88888888888889) internal successors, (224), 9 states have internal predecessors, (224), 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) [2024-01-31 16:06:00,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:00,781 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] [2024-01-31 16:06:00,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-01-31 16:06:00,782 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:06:00,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:00,782 INFO L85 PathProgramCache]: Analyzing trace with hash 217594167, now seen corresponding path program 2 times [2024-01-31 16:06:00,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:00,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413306944] [2024-01-31 16:06:00,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:00,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:00,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:01,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:01,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:01,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413306944] [2024-01-31 16:06:01,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413306944] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:01,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:01,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:06:01,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073332616] [2024-01-31 16:06:01,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:01,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:06:01,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:01,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:06:01,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:06:01,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:06:01,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 359 transitions, 5426 flow. Second operand has 9 states, 9 states have (on average 24.666666666666668) internal successors, (222), 9 states have internal predecessors, (222), 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) [2024-01-31 16:06:01,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:01,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:06:01,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:02,071 INFO L124 PetriNetUnfolderBase]: 2924/5609 cut-off events. [2024-01-31 16:06:02,072 INFO L125 PetriNetUnfolderBase]: For 61236/61498 co-relation queries the response was YES. [2024-01-31 16:06:02,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28289 conditions, 5609 events. 2924/5609 cut-off events. For 61236/61498 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 39753 event pairs, 629 based on Foata normal form. 49/5461 useless extension candidates. Maximal degree in co-relation 28180. Up to 3087 conditions per place. [2024-01-31 16:06:02,130 INFO L140 encePairwiseOnDemand]: 69/81 looper letters, 287 selfloop transitions, 102 changer transitions 0/417 dead transitions. [2024-01-31 16:06:02,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 417 transitions, 6550 flow [2024-01-31 16:06:02,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:06:02,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:06:02,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 298 transitions. [2024-01-31 16:06:02,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45987654320987653 [2024-01-31 16:06:02,131 INFO L175 Difference]: Start difference. First operand has 287 places, 359 transitions, 5426 flow. Second operand 8 states and 298 transitions. [2024-01-31 16:06:02,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 417 transitions, 6550 flow [2024-01-31 16:06:02,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 417 transitions, 6386 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-01-31 16:06:02,324 INFO L231 Difference]: Finished difference. Result has 291 places, 372 transitions, 5643 flow [2024-01-31 16:06:02,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=5262, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5643, PETRI_PLACES=291, PETRI_TRANSITIONS=372} [2024-01-31 16:06:02,325 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 206 predicate places. [2024-01-31 16:06:02,325 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 372 transitions, 5643 flow [2024-01-31 16:06:02,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.666666666666668) internal successors, (222), 9 states have internal predecessors, (222), 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) [2024-01-31 16:06:02,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:02,325 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] [2024-01-31 16:06:02,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-01-31 16:06:02,326 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:06:02,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:02,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1429700621, now seen corresponding path program 3 times [2024-01-31 16:06:02,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:02,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344155905] [2024-01-31 16:06:02,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:02,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:02,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:02,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:02,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:02,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344155905] [2024-01-31 16:06:02,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344155905] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:02,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:02,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:06:02,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413728611] [2024-01-31 16:06:02,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:02,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:06:02,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:02,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:06:02,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:06:02,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:06:02,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 372 transitions, 5643 flow. Second operand has 9 states, 9 states have (on average 24.666666666666668) internal successors, (222), 9 states have internal predecessors, (222), 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) [2024-01-31 16:06:02,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:02,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:06:02,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:03,656 INFO L124 PetriNetUnfolderBase]: 2960/5809 cut-off events. [2024-01-31 16:06:03,656 INFO L125 PetriNetUnfolderBase]: For 63691/63957 co-relation queries the response was YES. [2024-01-31 16:06:03,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29154 conditions, 5809 events. 2960/5809 cut-off events. For 63691/63957 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 41936 event pairs, 911 based on Foata normal form. 37/5601 useless extension candidates. Maximal degree in co-relation 29044. Up to 4455 conditions per place. [2024-01-31 16:06:03,712 INFO L140 encePairwiseOnDemand]: 71/81 looper letters, 319 selfloop transitions, 59 changer transitions 0/406 dead transitions. [2024-01-31 16:06:03,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 406 transitions, 6609 flow [2024-01-31 16:06:03,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:06:03,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:06:03,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 304 transitions. [2024-01-31 16:06:03,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4170096021947874 [2024-01-31 16:06:03,713 INFO L175 Difference]: Start difference. First operand has 291 places, 372 transitions, 5643 flow. Second operand 9 states and 304 transitions. [2024-01-31 16:06:03,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 406 transitions, 6609 flow [2024-01-31 16:06:03,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 406 transitions, 6461 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-01-31 16:06:03,916 INFO L231 Difference]: Finished difference. Result has 296 places, 379 transitions, 5740 flow [2024-01-31 16:06:03,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=5503, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5740, PETRI_PLACES=296, PETRI_TRANSITIONS=379} [2024-01-31 16:06:03,917 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 211 predicate places. [2024-01-31 16:06:03,917 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 379 transitions, 5740 flow [2024-01-31 16:06:03,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.666666666666668) internal successors, (222), 9 states have internal predecessors, (222), 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) [2024-01-31 16:06:03,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:03,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:03,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-01-31 16:06:03,918 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:06:03,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:03,919 INFO L85 PathProgramCache]: Analyzing trace with hash -643189669, now seen corresponding path program 4 times [2024-01-31 16:06:03,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:03,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692464698] [2024-01-31 16:06:03,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:03,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:03,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:04,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:04,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:04,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692464698] [2024-01-31 16:06:04,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692464698] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:04,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:04,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:06:04,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537415939] [2024-01-31 16:06:04,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:04,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:06:04,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:04,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:06:04,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:06:04,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:06:04,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 379 transitions, 5740 flow. Second operand has 9 states, 9 states have (on average 24.666666666666668) internal successors, (222), 9 states have internal predecessors, (222), 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) [2024-01-31 16:06:04,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:04,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:06:04,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:05,334 INFO L124 PetriNetUnfolderBase]: 2992/5857 cut-off events. [2024-01-31 16:06:05,334 INFO L125 PetriNetUnfolderBase]: For 64281/64551 co-relation queries the response was YES. [2024-01-31 16:06:05,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29250 conditions, 5857 events. 2992/5857 cut-off events. For 64281/64551 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 42299 event pairs, 911 based on Foata normal form. 41/5651 useless extension candidates. Maximal degree in co-relation 29138. Up to 4503 conditions per place. [2024-01-31 16:06:05,399 INFO L140 encePairwiseOnDemand]: 71/81 looper letters, 321 selfloop transitions, 61 changer transitions 0/410 dead transitions. [2024-01-31 16:06:05,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 410 transitions, 6628 flow [2024-01-31 16:06:05,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:06:05,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:06:05,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 304 transitions. [2024-01-31 16:06:05,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4170096021947874 [2024-01-31 16:06:05,400 INFO L175 Difference]: Start difference. First operand has 296 places, 379 transitions, 5740 flow. Second operand 9 states and 304 transitions. [2024-01-31 16:06:05,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 410 transitions, 6628 flow [2024-01-31 16:06:05,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 410 transitions, 6571 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-01-31 16:06:05,610 INFO L231 Difference]: Finished difference. Result has 302 places, 381 transitions, 5836 flow [2024-01-31 16:06:05,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=5683, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5836, PETRI_PLACES=302, PETRI_TRANSITIONS=381} [2024-01-31 16:06:05,611 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 217 predicate places. [2024-01-31 16:06:05,611 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 381 transitions, 5836 flow [2024-01-31 16:06:05,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.666666666666668) internal successors, (222), 9 states have internal predecessors, (222), 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) [2024-01-31 16:06:05,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:05,611 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] [2024-01-31 16:06:05,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-01-31 16:06:05,611 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:06:05,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:05,612 INFO L85 PathProgramCache]: Analyzing trace with hash -232521979, now seen corresponding path program 5 times [2024-01-31 16:06:05,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:05,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89659108] [2024-01-31 16:06:05,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:05,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:05,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:05,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:05,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:05,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89659108] [2024-01-31 16:06:05,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89659108] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:05,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:05,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:06:05,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993613920] [2024-01-31 16:06:05,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:05,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:06:05,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:05,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:06:05,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:06:05,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:06:05,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 381 transitions, 5836 flow. Second operand has 9 states, 9 states have (on average 24.666666666666668) internal successors, (222), 9 states have internal predecessors, (222), 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) [2024-01-31 16:06:05,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:05,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:06:05,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:07,135 INFO L124 PetriNetUnfolderBase]: 2980/5821 cut-off events. [2024-01-31 16:06:07,135 INFO L125 PetriNetUnfolderBase]: For 65595/65865 co-relation queries the response was YES. [2024-01-31 16:06:07,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29251 conditions, 5821 events. 2980/5821 cut-off events. For 65595/65865 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 41911 event pairs, 911 based on Foata normal form. 41/5619 useless extension candidates. Maximal degree in co-relation 29138. Up to 4415 conditions per place. [2024-01-31 16:06:07,201 INFO L140 encePairwiseOnDemand]: 71/81 looper letters, 317 selfloop transitions, 67 changer transitions 0/412 dead transitions. [2024-01-31 16:06:07,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 412 transitions, 6715 flow [2024-01-31 16:06:07,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:06:07,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:06:07,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 305 transitions. [2024-01-31 16:06:07,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41838134430727025 [2024-01-31 16:06:07,202 INFO L175 Difference]: Start difference. First operand has 302 places, 381 transitions, 5836 flow. Second operand 9 states and 305 transitions. [2024-01-31 16:06:07,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 412 transitions, 6715 flow [2024-01-31 16:06:07,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 412 transitions, 6547 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-01-31 16:06:07,413 INFO L231 Difference]: Finished difference. Result has 304 places, 381 transitions, 5816 flow [2024-01-31 16:06:07,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=5668, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5816, PETRI_PLACES=304, PETRI_TRANSITIONS=381} [2024-01-31 16:06:07,414 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 219 predicate places. [2024-01-31 16:06:07,414 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 381 transitions, 5816 flow [2024-01-31 16:06:07,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.666666666666668) internal successors, (222), 9 states have internal predecessors, (222), 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) [2024-01-31 16:06:07,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:07,414 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] [2024-01-31 16:06:07,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-01-31 16:06:07,415 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:06:07,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:07,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1085833147, now seen corresponding path program 1 times [2024-01-31 16:06:07,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:07,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187907935] [2024-01-31 16:06:07,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:07,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:07,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:07,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:07,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:07,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187907935] [2024-01-31 16:06:07,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187907935] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:07,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:07,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:06:07,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399154885] [2024-01-31 16:06:07,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:07,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:06:07,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:07,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:06:07,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:06:07,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:06:07,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 381 transitions, 5816 flow. Second operand has 9 states, 9 states have (on average 24.666666666666668) internal successors, (222), 9 states have internal predecessors, (222), 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) [2024-01-31 16:06:07,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:07,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:06:07,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:08,843 INFO L124 PetriNetUnfolderBase]: 3185/6107 cut-off events. [2024-01-31 16:06:08,843 INFO L125 PetriNetUnfolderBase]: For 72262/72803 co-relation queries the response was YES. [2024-01-31 16:06:08,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30960 conditions, 6107 events. 3185/6107 cut-off events. For 72262/72803 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 43327 event pairs, 649 based on Foata normal form. 133/5966 useless extension candidates. Maximal degree in co-relation 30848. Up to 2801 conditions per place. [2024-01-31 16:06:08,913 INFO L140 encePairwiseOnDemand]: 70/81 looper letters, 314 selfloop transitions, 104 changer transitions 0/453 dead transitions. [2024-01-31 16:06:08,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 453 transitions, 7143 flow [2024-01-31 16:06:08,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:06:08,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:06:08,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 337 transitions. [2024-01-31 16:06:08,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46227709190672156 [2024-01-31 16:06:08,914 INFO L175 Difference]: Start difference. First operand has 304 places, 381 transitions, 5816 flow. Second operand 9 states and 337 transitions. [2024-01-31 16:06:08,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 453 transitions, 7143 flow [2024-01-31 16:06:09,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 453 transitions, 6993 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-01-31 16:06:09,112 INFO L231 Difference]: Finished difference. Result has 306 places, 381 transitions, 5898 flow [2024-01-31 16:06:09,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=5682, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5898, PETRI_PLACES=306, PETRI_TRANSITIONS=381} [2024-01-31 16:06:09,113 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 221 predicate places. [2024-01-31 16:06:09,113 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 381 transitions, 5898 flow [2024-01-31 16:06:09,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.666666666666668) internal successors, (222), 9 states have internal predecessors, (222), 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) [2024-01-31 16:06:09,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:09,113 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] [2024-01-31 16:06:09,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-01-31 16:06:09,114 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:06:09,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:09,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1788386515, now seen corresponding path program 3 times [2024-01-31 16:06:09,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:09,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348188791] [2024-01-31 16:06:09,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:09,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:09,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:09,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:09,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:09,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348188791] [2024-01-31 16:06:09,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348188791] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:09,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:09,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:06:09,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308724965] [2024-01-31 16:06:09,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:09,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:06:09,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:09,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:06:09,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:06:09,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:06:09,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 381 transitions, 5898 flow. Second operand has 9 states, 9 states have (on average 24.88888888888889) internal successors, (224), 9 states have internal predecessors, (224), 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) [2024-01-31 16:06:09,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:09,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:06:09,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:10,680 INFO L124 PetriNetUnfolderBase]: 3529/6594 cut-off events. [2024-01-31 16:06:10,680 INFO L125 PetriNetUnfolderBase]: For 76540/77144 co-relation queries the response was YES. [2024-01-31 16:06:10,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33848 conditions, 6594 events. 3529/6594 cut-off events. For 76540/77144 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 46562 event pairs, 831 based on Foata normal form. 192/6524 useless extension candidates. Maximal degree in co-relation 33735. Up to 2660 conditions per place. [2024-01-31 16:06:10,748 INFO L140 encePairwiseOnDemand]: 72/81 looper letters, 310 selfloop transitions, 110 changer transitions 0/455 dead transitions. [2024-01-31 16:06:10,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 455 transitions, 7281 flow [2024-01-31 16:06:10,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:06:10,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:06:10,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 283 transitions. [2024-01-31 16:06:10,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4991181657848324 [2024-01-31 16:06:10,749 INFO L175 Difference]: Start difference. First operand has 306 places, 381 transitions, 5898 flow. Second operand 7 states and 283 transitions. [2024-01-31 16:06:10,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 455 transitions, 7281 flow [2024-01-31 16:06:10,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 455 transitions, 7073 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-01-31 16:06:10,973 INFO L231 Difference]: Finished difference. Result has 306 places, 389 transitions, 6028 flow [2024-01-31 16:06:10,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=5698, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6028, PETRI_PLACES=306, PETRI_TRANSITIONS=389} [2024-01-31 16:06:10,974 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 221 predicate places. [2024-01-31 16:06:10,974 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 389 transitions, 6028 flow [2024-01-31 16:06:10,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.88888888888889) internal successors, (224), 9 states have internal predecessors, (224), 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) [2024-01-31 16:06:10,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:10,974 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] [2024-01-31 16:06:10,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-01-31 16:06:10,974 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting P1Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:06:10,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:10,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1789159247, now seen corresponding path program 3 times [2024-01-31 16:06:10,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:10,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174206792] [2024-01-31 16:06:10,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:10,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:10,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:11,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:11,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:11,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174206792] [2024-01-31 16:06:11,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174206792] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:11,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:11,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:06:11,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523927560] [2024-01-31 16:06:11,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:11,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:06:11,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:11,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:06:11,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:06:11,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:06:11,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 389 transitions, 6028 flow. Second operand has 9 states, 9 states have (on average 24.88888888888889) internal successors, (224), 9 states have internal predecessors, (224), 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) [2024-01-31 16:06:11,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:11,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:06:11,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:12,413 INFO L124 PetriNetUnfolderBase]: 3100/5979 cut-off events. [2024-01-31 16:06:12,413 INFO L125 PetriNetUnfolderBase]: For 70277/70553 co-relation queries the response was YES. [2024-01-31 16:06:12,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30767 conditions, 5979 events. 3100/5979 cut-off events. For 70277/70553 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 42935 event pairs, 744 based on Foata normal form. 104/5858 useless extension candidates. Maximal degree in co-relation 30653. Up to 2443 conditions per place. [2024-01-31 16:06:12,478 INFO L140 encePairwiseOnDemand]: 72/81 looper letters, 269 selfloop transitions, 130 changer transitions 0/427 dead transitions. [2024-01-31 16:06:12,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 427 transitions, 7067 flow [2024-01-31 16:06:12,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:06:12,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:06:12,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 267 transitions. [2024-01-31 16:06:12,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4708994708994709 [2024-01-31 16:06:12,479 INFO L175 Difference]: Start difference. First operand has 306 places, 389 transitions, 6028 flow. Second operand 7 states and 267 transitions. [2024-01-31 16:06:12,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 427 transitions, 7067 flow [2024-01-31 16:06:12,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 427 transitions, 6924 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-01-31 16:06:12,698 INFO L231 Difference]: Finished difference. Result has 310 places, 389 transitions, 6177 flow [2024-01-31 16:06:12,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=5885, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6177, PETRI_PLACES=310, PETRI_TRANSITIONS=389} [2024-01-31 16:06:12,699 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 225 predicate places. [2024-01-31 16:06:12,699 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 389 transitions, 6177 flow [2024-01-31 16:06:12,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.88888888888889) internal successors, (224), 9 states have internal predecessors, (224), 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) [2024-01-31 16:06:12,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:12,699 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] [2024-01-31 16:06:12,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-01-31 16:06:12,700 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:06:12,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:12,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1031362773, now seen corresponding path program 4 times [2024-01-31 16:06:12,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:12,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96142162] [2024-01-31 16:06:12,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:12,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:12,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:12,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:12,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:12,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96142162] [2024-01-31 16:06:12,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96142162] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:12,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:12,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:06:12,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083966602] [2024-01-31 16:06:12,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:12,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:06:12,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:12,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:06:12,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:06:13,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:06:13,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 389 transitions, 6177 flow. Second operand has 9 states, 9 states have (on average 24.88888888888889) internal successors, (224), 9 states have internal predecessors, (224), 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) [2024-01-31 16:06:13,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:13,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:06:13,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:14,210 INFO L124 PetriNetUnfolderBase]: 3275/6202 cut-off events. [2024-01-31 16:06:14,211 INFO L125 PetriNetUnfolderBase]: For 84834/85425 co-relation queries the response was YES. [2024-01-31 16:06:14,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32404 conditions, 6202 events. 3275/6202 cut-off events. For 84834/85425 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 43722 event pairs, 997 based on Foata normal form. 174/6108 useless extension candidates. Maximal degree in co-relation 32289. Up to 4902 conditions per place. [2024-01-31 16:06:14,269 INFO L140 encePairwiseOnDemand]: 72/81 looper letters, 331 selfloop transitions, 50 changer transitions 0/416 dead transitions. [2024-01-31 16:06:14,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 416 transitions, 7076 flow [2024-01-31 16:06:14,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:06:14,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:06:14,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 248 transitions. [2024-01-31 16:06:14,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43738977072310403 [2024-01-31 16:06:14,271 INFO L175 Difference]: Start difference. First operand has 310 places, 389 transitions, 6177 flow. Second operand 7 states and 248 transitions. [2024-01-31 16:06:14,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 416 transitions, 7076 flow [2024-01-31 16:06:14,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 416 transitions, 6775 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-01-31 16:06:14,483 INFO L231 Difference]: Finished difference. Result has 309 places, 389 transitions, 5990 flow [2024-01-31 16:06:14,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=5876, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5990, PETRI_PLACES=309, PETRI_TRANSITIONS=389} [2024-01-31 16:06:14,484 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 224 predicate places. [2024-01-31 16:06:14,484 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 389 transitions, 5990 flow [2024-01-31 16:06:14,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.88888888888889) internal successors, (224), 9 states have internal predecessors, (224), 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) [2024-01-31 16:06:14,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:14,484 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] [2024-01-31 16:06:14,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-01-31 16:06:14,484 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:06:14,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:14,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1589525119, now seen corresponding path program 2 times [2024-01-31 16:06:14,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:14,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529640954] [2024-01-31 16:06:14,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:14,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:14,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:14,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:14,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:14,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529640954] [2024-01-31 16:06:14,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529640954] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:14,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:14,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:06:14,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175938205] [2024-01-31 16:06:14,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:14,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:06:14,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:14,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:06:14,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:06:14,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:06:14,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 389 transitions, 5990 flow. Second operand has 9 states, 9 states have (on average 24.666666666666668) internal successors, (222), 9 states have internal predecessors, (222), 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) [2024-01-31 16:06:14,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:14,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:06:14,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:15,970 INFO L124 PetriNetUnfolderBase]: 3363/6434 cut-off events. [2024-01-31 16:06:15,970 INFO L125 PetriNetUnfolderBase]: For 78244/78833 co-relation queries the response was YES. [2024-01-31 16:06:16,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32451 conditions, 6434 events. 3363/6434 cut-off events. For 78244/78833 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 45893 event pairs, 623 based on Foata normal form. 137/6285 useless extension candidates. Maximal degree in co-relation 32336. Up to 2932 conditions per place. [2024-01-31 16:06:16,038 INFO L140 encePairwiseOnDemand]: 70/81 looper letters, 341 selfloop transitions, 104 changer transitions 0/480 dead transitions. [2024-01-31 16:06:16,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 480 transitions, 7529 flow [2024-01-31 16:06:16,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:06:16,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:06:16,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 344 transitions. [2024-01-31 16:06:16,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4718792866941015 [2024-01-31 16:06:16,040 INFO L175 Difference]: Start difference. First operand has 309 places, 389 transitions, 5990 flow. Second operand 9 states and 344 transitions. [2024-01-31 16:06:16,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 480 transitions, 7529 flow [2024-01-31 16:06:16,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 480 transitions, 7408 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-01-31 16:06:16,261 INFO L231 Difference]: Finished difference. Result has 311 places, 399 transitions, 6163 flow [2024-01-31 16:06:16,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=5869, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6163, PETRI_PLACES=311, PETRI_TRANSITIONS=399} [2024-01-31 16:06:16,262 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 226 predicate places. [2024-01-31 16:06:16,262 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 399 transitions, 6163 flow [2024-01-31 16:06:16,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.666666666666668) internal successors, (222), 9 states have internal predecessors, (222), 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) [2024-01-31 16:06:16,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:16,262 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] [2024-01-31 16:06:16,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-01-31 16:06:16,262 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:06:16,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:16,262 INFO L85 PathProgramCache]: Analyzing trace with hash 394163585, now seen corresponding path program 3 times [2024-01-31 16:06:16,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:16,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816636613] [2024-01-31 16:06:16,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:16,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:16,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:16,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:16,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:16,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816636613] [2024-01-31 16:06:16,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816636613] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:16,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:16,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:06:16,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072219849] [2024-01-31 16:06:16,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:16,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:06:16,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:16,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:06:16,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:06:16,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:06:16,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 399 transitions, 6163 flow. Second operand has 9 states, 9 states have (on average 24.666666666666668) internal successors, (222), 9 states have internal predecessors, (222), 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) [2024-01-31 16:06:16,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:16,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:06:16,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:17,797 INFO L124 PetriNetUnfolderBase]: 3357/6340 cut-off events. [2024-01-31 16:06:17,797 INFO L125 PetriNetUnfolderBase]: For 79055/79643 co-relation queries the response was YES. [2024-01-31 16:06:17,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32776 conditions, 6340 events. 3357/6340 cut-off events. For 79055/79643 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 44848 event pairs, 1019 based on Foata normal form. 137/6209 useless extension candidates. Maximal degree in co-relation 32660. Up to 4931 conditions per place. [2024-01-31 16:06:17,857 INFO L140 encePairwiseOnDemand]: 71/81 looper letters, 338 selfloop transitions, 65 changer transitions 0/438 dead transitions. [2024-01-31 16:06:17,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 438 transitions, 7168 flow [2024-01-31 16:06:17,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:06:17,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:06:17,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 314 transitions. [2024-01-31 16:06:17,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43072702331961593 [2024-01-31 16:06:17,858 INFO L175 Difference]: Start difference. First operand has 311 places, 399 transitions, 6163 flow. Second operand 9 states and 314 transitions. [2024-01-31 16:06:17,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 438 transitions, 7168 flow [2024-01-31 16:06:18,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 438 transitions, 7037 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-31 16:06:18,076 INFO L231 Difference]: Finished difference. Result has 317 places, 399 transitions, 6170 flow [2024-01-31 16:06:18,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=6032, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6170, PETRI_PLACES=317, PETRI_TRANSITIONS=399} [2024-01-31 16:06:18,076 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 232 predicate places. [2024-01-31 16:06:18,077 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 399 transitions, 6170 flow [2024-01-31 16:06:18,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.666666666666668) internal successors, (222), 9 states have internal predecessors, (222), 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) [2024-01-31 16:06:18,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:18,077 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] [2024-01-31 16:06:18,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-01-31 16:06:18,077 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:06:18,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:18,077 INFO L85 PathProgramCache]: Analyzing trace with hash 395471165, now seen corresponding path program 4 times [2024-01-31 16:06:18,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:18,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243357316] [2024-01-31 16:06:18,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:18,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:18,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:18,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:18,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:18,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243357316] [2024-01-31 16:06:18,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243357316] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:18,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:18,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:06:18,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821766485] [2024-01-31 16:06:18,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:18,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:06:18,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:18,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:06:18,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:06:18,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:06:18,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 399 transitions, 6170 flow. Second operand has 9 states, 9 states have (on average 24.666666666666668) internal successors, (222), 9 states have internal predecessors, (222), 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) [2024-01-31 16:06:18,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:18,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:06:18,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:19,583 INFO L124 PetriNetUnfolderBase]: 3342/6319 cut-off events. [2024-01-31 16:06:19,583 INFO L125 PetriNetUnfolderBase]: For 80465/81063 co-relation queries the response was YES. [2024-01-31 16:06:19,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32412 conditions, 6319 events. 3342/6319 cut-off events. For 80465/81063 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 44688 event pairs, 1003 based on Foata normal form. 141/6193 useless extension candidates. Maximal degree in co-relation 32294. Up to 4930 conditions per place. [2024-01-31 16:06:19,661 INFO L140 encePairwiseOnDemand]: 71/81 looper letters, 340 selfloop transitions, 66 changer transitions 0/441 dead transitions. [2024-01-31 16:06:19,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 441 transitions, 7163 flow [2024-01-31 16:06:19,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-31 16:06:19,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-31 16:06:19,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 367 transitions. [2024-01-31 16:06:19,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4118967452300786 [2024-01-31 16:06:19,663 INFO L175 Difference]: Start difference. First operand has 317 places, 399 transitions, 6170 flow. Second operand 11 states and 367 transitions. [2024-01-31 16:06:19,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 441 transitions, 7163 flow [2024-01-31 16:06:19,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 441 transitions, 7046 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-31 16:06:19,908 INFO L231 Difference]: Finished difference. Result has 322 places, 399 transitions, 6192 flow [2024-01-31 16:06:19,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=6053, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6192, PETRI_PLACES=322, PETRI_TRANSITIONS=399} [2024-01-31 16:06:19,909 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 237 predicate places. [2024-01-31 16:06:19,909 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 399 transitions, 6192 flow [2024-01-31 16:06:19,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.666666666666668) internal successors, (222), 9 states have internal predecessors, (222), 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) [2024-01-31 16:06:19,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:19,909 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] [2024-01-31 16:06:19,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-01-31 16:06:19,909 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:06:19,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:19,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1297105666, now seen corresponding path program 2 times [2024-01-31 16:06:19,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:19,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959826243] [2024-01-31 16:06:19,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:19,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:19,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:20,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:20,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:20,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959826243] [2024-01-31 16:06:20,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959826243] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:20,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:20,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:06:20,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888022177] [2024-01-31 16:06:20,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:20,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:06:20,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:20,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:06:20,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:06:20,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:06:20,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 399 transitions, 6192 flow. Second operand has 9 states, 9 states have (on average 24.666666666666668) internal successors, (222), 9 states have internal predecessors, (222), 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) [2024-01-31 16:06:20,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:20,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:06:20,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:21,551 INFO L124 PetriNetUnfolderBase]: 3400/6432 cut-off events. [2024-01-31 16:06:21,551 INFO L125 PetriNetUnfolderBase]: For 84027/84589 co-relation queries the response was YES. [2024-01-31 16:06:21,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33049 conditions, 6432 events. 3400/6432 cut-off events. For 84027/84589 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 45683 event pairs, 968 based on Foata normal form. 152/6320 useless extension candidates. Maximal degree in co-relation 32930. Up to 5149 conditions per place. [2024-01-31 16:06:21,626 INFO L140 encePairwiseOnDemand]: 73/81 looper letters, 340 selfloop transitions, 57 changer transitions 0/432 dead transitions. [2024-01-31 16:06:21,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 432 transitions, 7157 flow [2024-01-31 16:06:21,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:06:21,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:06:21,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 277 transitions. [2024-01-31 16:06:21,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42746913580246915 [2024-01-31 16:06:21,629 INFO L175 Difference]: Start difference. First operand has 322 places, 399 transitions, 6192 flow. Second operand 8 states and 277 transitions. [2024-01-31 16:06:21,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 432 transitions, 7157 flow [2024-01-31 16:06:21,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 432 transitions, 7046 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-01-31 16:06:21,911 INFO L231 Difference]: Finished difference. Result has 324 places, 404 transitions, 6278 flow [2024-01-31 16:06:21,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=6089, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6278, PETRI_PLACES=324, PETRI_TRANSITIONS=404} [2024-01-31 16:06:21,912 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 239 predicate places. [2024-01-31 16:06:21,912 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 404 transitions, 6278 flow [2024-01-31 16:06:21,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.666666666666668) internal successors, (222), 9 states have internal predecessors, (222), 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) [2024-01-31 16:06:21,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:21,912 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] [2024-01-31 16:06:21,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-01-31 16:06:21,912 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:06:21,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:21,912 INFO L85 PathProgramCache]: Analyzing trace with hash 591323116, now seen corresponding path program 3 times [2024-01-31 16:06:21,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:21,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344463254] [2024-01-31 16:06:21,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:21,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:21,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:22,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:22,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:22,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344463254] [2024-01-31 16:06:22,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344463254] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:22,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:22,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:06:22,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944756261] [2024-01-31 16:06:22,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:22,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:06:22,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:22,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:06:22,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:06:22,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:06:22,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 404 transitions, 6278 flow. Second operand has 9 states, 9 states have (on average 24.666666666666668) internal successors, (222), 9 states have internal predecessors, (222), 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) [2024-01-31 16:06:22,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:22,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:06:22,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:23,365 INFO L124 PetriNetUnfolderBase]: 3436/6509 cut-off events. [2024-01-31 16:06:23,366 INFO L125 PetriNetUnfolderBase]: For 84875/85425 co-relation queries the response was YES. [2024-01-31 16:06:23,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33426 conditions, 6509 events. 3436/6509 cut-off events. For 84875/85425 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 46405 event pairs, 997 based on Foata normal form. 132/6371 useless extension candidates. Maximal degree in co-relation 33305. Up to 5190 conditions per place. [2024-01-31 16:06:23,437 INFO L140 encePairwiseOnDemand]: 74/81 looper letters, 338 selfloop transitions, 61 changer transitions 0/434 dead transitions. [2024-01-31 16:06:23,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 434 transitions, 7211 flow [2024-01-31 16:06:23,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:06:23,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:06:23,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 249 transitions. [2024-01-31 16:06:23,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43915343915343913 [2024-01-31 16:06:23,438 INFO L175 Difference]: Start difference. First operand has 324 places, 404 transitions, 6278 flow. Second operand 7 states and 249 transitions. [2024-01-31 16:06:23,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 434 transitions, 7211 flow [2024-01-31 16:06:23,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 434 transitions, 7151 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-01-31 16:06:23,697 INFO L231 Difference]: Finished difference. Result has 327 places, 407 transitions, 6382 flow [2024-01-31 16:06:23,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=6221, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6382, PETRI_PLACES=327, PETRI_TRANSITIONS=407} [2024-01-31 16:06:23,698 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 242 predicate places. [2024-01-31 16:06:23,698 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 407 transitions, 6382 flow [2024-01-31 16:06:23,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.666666666666668) internal successors, (222), 9 states have internal predecessors, (222), 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) [2024-01-31 16:06:23,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:23,698 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] [2024-01-31 16:06:23,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-01-31 16:06:23,699 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:06:23,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:23,699 INFO L85 PathProgramCache]: Analyzing trace with hash 592635346, now seen corresponding path program 4 times [2024-01-31 16:06:23,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:23,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577249968] [2024-01-31 16:06:23,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:23,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:23,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:23,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:23,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:23,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577249968] [2024-01-31 16:06:23,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577249968] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:23,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:23,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:06:23,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986359944] [2024-01-31 16:06:23,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:23,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:06:23,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:23,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:06:23,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:06:23,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:06:23,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 407 transitions, 6382 flow. Second operand has 9 states, 9 states have (on average 24.666666666666668) internal successors, (222), 9 states have internal predecessors, (222), 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) [2024-01-31 16:06:23,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:23,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:06:23,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:25,206 INFO L124 PetriNetUnfolderBase]: 3411/6450 cut-off events. [2024-01-31 16:06:25,206 INFO L125 PetriNetUnfolderBase]: For 85973/86523 co-relation queries the response was YES. [2024-01-31 16:06:25,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33209 conditions, 6450 events. 3411/6450 cut-off events. For 85973/86523 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 45807 event pairs, 987 based on Foata normal form. 130/6316 useless extension candidates. Maximal degree in co-relation 33088. Up to 5190 conditions per place. [2024-01-31 16:06:25,290 INFO L140 encePairwiseOnDemand]: 74/81 looper letters, 328 selfloop transitions, 65 changer transitions 0/428 dead transitions. [2024-01-31 16:06:25,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 428 transitions, 7230 flow [2024-01-31 16:06:25,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:06:25,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:06:25,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 242 transitions. [2024-01-31 16:06:25,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42680776014109345 [2024-01-31 16:06:25,291 INFO L175 Difference]: Start difference. First operand has 327 places, 407 transitions, 6382 flow. Second operand 7 states and 242 transitions. [2024-01-31 16:06:25,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 428 transitions, 7230 flow [2024-01-31 16:06:25,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 428 transitions, 7046 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-01-31 16:06:25,549 INFO L231 Difference]: Finished difference. Result has 320 places, 406 transitions, 6310 flow [2024-01-31 16:06:25,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=6180, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6310, PETRI_PLACES=320, PETRI_TRANSITIONS=406} [2024-01-31 16:06:25,550 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 235 predicate places. [2024-01-31 16:06:25,550 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 406 transitions, 6310 flow [2024-01-31 16:06:25,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.666666666666668) internal successors, (222), 9 states have internal predecessors, (222), 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) [2024-01-31 16:06:25,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:25,550 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] [2024-01-31 16:06:25,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-01-31 16:06:25,550 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:06:25,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:25,551 INFO L85 PathProgramCache]: Analyzing trace with hash 572806381, now seen corresponding path program 5 times [2024-01-31 16:06:25,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:25,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668618712] [2024-01-31 16:06:25,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:25,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:25,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:25,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:25,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:25,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668618712] [2024-01-31 16:06:25,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668618712] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:25,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:25,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:06:25,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709041489] [2024-01-31 16:06:25,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:25,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:06:25,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:25,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:06:25,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:06:25,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:06:25,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 406 transitions, 6310 flow. Second operand has 9 states, 9 states have (on average 24.88888888888889) internal successors, (224), 9 states have internal predecessors, (224), 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) [2024-01-31 16:06:25,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:25,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:06:25,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:27,043 INFO L124 PetriNetUnfolderBase]: 3377/6376 cut-off events. [2024-01-31 16:06:27,043 INFO L125 PetriNetUnfolderBase]: For 84351/84878 co-relation queries the response was YES. [2024-01-31 16:06:27,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32595 conditions, 6376 events. 3377/6376 cut-off events. For 84351/84878 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 44957 event pairs, 691 based on Foata normal form. 159/6276 useless extension candidates. Maximal degree in co-relation 32482. Up to 2762 conditions per place. [2024-01-31 16:06:27,115 INFO L140 encePairwiseOnDemand]: 65/81 looper letters, 278 selfloop transitions, 146 changer transitions 0/459 dead transitions. [2024-01-31 16:06:27,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 459 transitions, 7453 flow [2024-01-31 16:06:27,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:06:27,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:06:27,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 279 transitions. [2024-01-31 16:06:27,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49206349206349204 [2024-01-31 16:06:27,116 INFO L175 Difference]: Start difference. First operand has 320 places, 406 transitions, 6310 flow. Second operand 7 states and 279 transitions. [2024-01-31 16:06:27,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 459 transitions, 7453 flow [2024-01-31 16:06:27,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 459 transitions, 7315 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-01-31 16:06:27,367 INFO L231 Difference]: Finished difference. Result has 322 places, 411 transitions, 6582 flow [2024-01-31 16:06:27,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=6172, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6582, PETRI_PLACES=322, PETRI_TRANSITIONS=411} [2024-01-31 16:06:27,367 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 237 predicate places. [2024-01-31 16:06:27,367 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 411 transitions, 6582 flow [2024-01-31 16:06:27,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.88888888888889) internal successors, (224), 9 states have internal predecessors, (224), 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) [2024-01-31 16:06:27,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:27,368 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] [2024-01-31 16:06:27,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-01-31 16:06:27,368 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:06:27,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:27,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1489862043, now seen corresponding path program 5 times [2024-01-31 16:06:27,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:27,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109433580] [2024-01-31 16:06:27,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:27,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:27,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:27,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:27,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:27,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109433580] [2024-01-31 16:06:27,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109433580] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:27,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:27,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:06:27,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581905936] [2024-01-31 16:06:27,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:27,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:06:27,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:27,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:06:27,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:06:27,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:06:27,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 411 transitions, 6582 flow. Second operand has 9 states, 9 states have (on average 24.666666666666668) internal successors, (222), 9 states have internal predecessors, (222), 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) [2024-01-31 16:06:27,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:27,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:06:27,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:28,867 INFO L124 PetriNetUnfolderBase]: 3377/6489 cut-off events. [2024-01-31 16:06:28,867 INFO L125 PetriNetUnfolderBase]: For 92578/93110 co-relation queries the response was YES. [2024-01-31 16:06:28,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34114 conditions, 6489 events. 3377/6489 cut-off events. For 92578/93110 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 46520 event pairs, 506 based on Foata normal form. 142/6349 useless extension candidates. Maximal degree in co-relation 34000. Up to 2949 conditions per place. [2024-01-31 16:06:28,929 INFO L140 encePairwiseOnDemand]: 67/81 looper letters, 327 selfloop transitions, 128 changer transitions 0/490 dead transitions. [2024-01-31 16:06:28,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 490 transitions, 8063 flow [2024-01-31 16:06:28,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:06:28,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:06:28,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 339 transitions. [2024-01-31 16:06:28,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46502057613168724 [2024-01-31 16:06:28,931 INFO L175 Difference]: Start difference. First operand has 322 places, 411 transitions, 6582 flow. Second operand 9 states and 339 transitions. [2024-01-31 16:06:28,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 490 transitions, 8063 flow [2024-01-31 16:06:29,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 490 transitions, 7847 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-01-31 16:06:29,176 INFO L231 Difference]: Finished difference. Result has 327 places, 424 transitions, 6801 flow [2024-01-31 16:06:29,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=6370, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6801, PETRI_PLACES=327, PETRI_TRANSITIONS=424} [2024-01-31 16:06:29,178 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 242 predicate places. [2024-01-31 16:06:29,178 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 424 transitions, 6801 flow [2024-01-31 16:06:29,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.666666666666668) internal successors, (222), 9 states have internal predecessors, (222), 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) [2024-01-31 16:06:29,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:29,178 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] [2024-01-31 16:06:29,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-01-31 16:06:29,179 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:06:29,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:29,179 INFO L85 PathProgramCache]: Analyzing trace with hash -392578783, now seen corresponding path program 6 times [2024-01-31 16:06:29,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:29,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540751763] [2024-01-31 16:06:29,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:29,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:29,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:29,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:29,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:29,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540751763] [2024-01-31 16:06:29,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540751763] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:29,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:29,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:06:29,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128768735] [2024-01-31 16:06:29,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:29,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:06:29,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:29,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:06:29,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:06:29,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:06:29,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 424 transitions, 6801 flow. Second operand has 9 states, 9 states have (on average 24.88888888888889) internal successors, (224), 9 states have internal predecessors, (224), 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) [2024-01-31 16:06:29,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:29,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:06:29,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:30,680 INFO L124 PetriNetUnfolderBase]: 3509/6633 cut-off events. [2024-01-31 16:06:30,680 INFO L125 PetriNetUnfolderBase]: For 92834/93374 co-relation queries the response was YES. [2024-01-31 16:06:30,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35675 conditions, 6633 events. 3509/6633 cut-off events. For 92834/93374 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 47286 event pairs, 959 based on Foata normal form. 170/6542 useless extension candidates. Maximal degree in co-relation 35560. Up to 5281 conditions per place. [2024-01-31 16:06:30,759 INFO L140 encePairwiseOnDemand]: 72/81 looper letters, 366 selfloop transitions, 52 changer transitions 0/453 dead transitions. [2024-01-31 16:06:30,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 453 transitions, 7828 flow [2024-01-31 16:06:30,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:06:30,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:06:30,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 245 transitions. [2024-01-31 16:06:30,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43209876543209874 [2024-01-31 16:06:30,760 INFO L175 Difference]: Start difference. First operand has 327 places, 424 transitions, 6801 flow. Second operand 7 states and 245 transitions. [2024-01-31 16:06:30,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 453 transitions, 7828 flow [2024-01-31 16:06:31,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 453 transitions, 7627 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-01-31 16:06:31,035 INFO L231 Difference]: Finished difference. Result has 327 places, 428 transitions, 6778 flow [2024-01-31 16:06:31,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=6602, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6778, PETRI_PLACES=327, PETRI_TRANSITIONS=428} [2024-01-31 16:06:31,035 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 242 predicate places. [2024-01-31 16:06:31,035 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 428 transitions, 6778 flow [2024-01-31 16:06:31,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.88888888888889) internal successors, (224), 9 states have internal predecessors, (224), 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) [2024-01-31 16:06:31,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:31,036 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] [2024-01-31 16:06:31,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-01-31 16:06:31,036 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:06:31,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:31,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1610296249, now seen corresponding path program 7 times [2024-01-31 16:06:31,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:31,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206284705] [2024-01-31 16:06:31,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:31,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:31,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:31,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:31,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:31,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206284705] [2024-01-31 16:06:31,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206284705] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:31,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:31,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:06:31,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968962474] [2024-01-31 16:06:31,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:31,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:06:31,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:31,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:06:31,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:06:31,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:06:31,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 428 transitions, 6778 flow. Second operand has 9 states, 9 states have (on average 24.88888888888889) internal successors, (224), 9 states have internal predecessors, (224), 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) [2024-01-31 16:06:31,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:31,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:06:31,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:32,552 INFO L124 PetriNetUnfolderBase]: 3471/6534 cut-off events. [2024-01-31 16:06:32,552 INFO L125 PetriNetUnfolderBase]: For 91859/92393 co-relation queries the response was YES. [2024-01-31 16:06:32,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34866 conditions, 6534 events. 3471/6534 cut-off events. For 91859/92393 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 46131 event pairs, 956 based on Foata normal form. 162/6436 useless extension candidates. Maximal degree in co-relation 34751. Up to 4612 conditions per place. [2024-01-31 16:06:32,623 INFO L140 encePairwiseOnDemand]: 72/81 looper letters, 344 selfloop transitions, 70 changer transitions 0/449 dead transitions. [2024-01-31 16:06:32,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 449 transitions, 7709 flow [2024-01-31 16:06:32,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:06:32,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:06:32,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 243 transitions. [2024-01-31 16:06:32,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-01-31 16:06:32,624 INFO L175 Difference]: Start difference. First operand has 327 places, 428 transitions, 6778 flow. Second operand 7 states and 243 transitions. [2024-01-31 16:06:32,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 449 transitions, 7709 flow [2024-01-31 16:06:32,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 449 transitions, 7628 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-01-31 16:06:32,886 INFO L231 Difference]: Finished difference. Result has 331 places, 428 transitions, 6873 flow [2024-01-31 16:06:32,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=6697, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6873, PETRI_PLACES=331, PETRI_TRANSITIONS=428} [2024-01-31 16:06:32,886 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 246 predicate places. [2024-01-31 16:06:32,886 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 428 transitions, 6873 flow [2024-01-31 16:06:32,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.88888888888889) internal successors, (224), 9 states have internal predecessors, (224), 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) [2024-01-31 16:06:32,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:32,887 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] [2024-01-31 16:06:32,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-01-31 16:06:32,887 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:06:32,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:32,887 INFO L85 PathProgramCache]: Analyzing trace with hash -821377489, now seen corresponding path program 6 times [2024-01-31 16:06:32,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:32,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139483499] [2024-01-31 16:06:32,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:32,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:32,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:33,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:33,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:33,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139483499] [2024-01-31 16:06:33,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139483499] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:33,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:33,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:06:33,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124507496] [2024-01-31 16:06:33,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:33,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:06:33,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:33,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:06:33,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:06:33,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:06:33,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 428 transitions, 6873 flow. Second operand has 9 states, 9 states have (on average 24.666666666666668) internal successors, (222), 9 states have internal predecessors, (222), 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) [2024-01-31 16:06:33,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:33,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:06:33,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:34,552 INFO L124 PetriNetUnfolderBase]: 3511/6621 cut-off events. [2024-01-31 16:06:34,552 INFO L125 PetriNetUnfolderBase]: For 94557/95101 co-relation queries the response was YES. [2024-01-31 16:06:34,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35515 conditions, 6621 events. 3511/6621 cut-off events. For 94557/95101 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 47153 event pairs, 937 based on Foata normal form. 146/6509 useless extension candidates. Maximal degree in co-relation 35399. Up to 5195 conditions per place. [2024-01-31 16:06:34,626 INFO L140 encePairwiseOnDemand]: 71/81 looper letters, 361 selfloop transitions, 73 changer transitions 0/469 dead transitions. [2024-01-31 16:06:34,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 469 transitions, 7985 flow [2024-01-31 16:06:34,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:06:34,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:06:34,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 311 transitions. [2024-01-31 16:06:34,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42661179698216734 [2024-01-31 16:06:34,627 INFO L175 Difference]: Start difference. First operand has 331 places, 428 transitions, 6873 flow. Second operand 9 states and 311 transitions. [2024-01-31 16:06:34,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 469 transitions, 7985 flow [2024-01-31 16:06:34,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 469 transitions, 7827 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-01-31 16:06:34,895 INFO L231 Difference]: Finished difference. Result has 334 places, 433 transitions, 6932 flow [2024-01-31 16:06:34,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=6715, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6932, PETRI_PLACES=334, PETRI_TRANSITIONS=433} [2024-01-31 16:06:34,895 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 249 predicate places. [2024-01-31 16:06:34,895 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 433 transitions, 6932 flow [2024-01-31 16:06:34,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.666666666666668) internal successors, (222), 9 states have internal predecessors, (222), 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) [2024-01-31 16:06:34,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:34,896 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] [2024-01-31 16:06:34,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-01-31 16:06:34,896 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:06:34,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:34,896 INFO L85 PathProgramCache]: Analyzing trace with hash -473614331, now seen corresponding path program 7 times [2024-01-31 16:06:34,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:34,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144894996] [2024-01-31 16:06:34,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:34,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:34,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:35,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:35,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:35,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144894996] [2024-01-31 16:06:35,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144894996] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:35,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:35,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:06:35,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317408162] [2024-01-31 16:06:35,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:35,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:06:35,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:35,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:06:35,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:06:35,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:06:35,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 433 transitions, 6932 flow. Second operand has 9 states, 9 states have (on average 24.666666666666668) internal successors, (222), 9 states have internal predecessors, (222), 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) [2024-01-31 16:06:35,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:35,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:06:35,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:36,416 INFO L124 PetriNetUnfolderBase]: 3518/6605 cut-off events. [2024-01-31 16:06:36,416 INFO L125 PetriNetUnfolderBase]: For 93823/94363 co-relation queries the response was YES. [2024-01-31 16:06:36,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35400 conditions, 6605 events. 3518/6605 cut-off events. For 93823/94363 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 46775 event pairs, 908 based on Foata normal form. 134/6483 useless extension candidates. Maximal degree in co-relation 35283. Up to 4861 conditions per place. [2024-01-31 16:06:36,492 INFO L140 encePairwiseOnDemand]: 71/81 looper letters, 341 selfloop transitions, 92 changer transitions 0/468 dead transitions. [2024-01-31 16:06:36,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 468 transitions, 7995 flow [2024-01-31 16:06:36,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:06:36,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:06:36,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 308 transitions. [2024-01-31 16:06:36,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4224965706447188 [2024-01-31 16:06:36,493 INFO L175 Difference]: Start difference. First operand has 334 places, 433 transitions, 6932 flow. Second operand 9 states and 308 transitions. [2024-01-31 16:06:36,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 468 transitions, 7995 flow [2024-01-31 16:06:36,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 468 transitions, 7879 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-01-31 16:06:36,767 INFO L231 Difference]: Finished difference. Result has 338 places, 433 transitions, 7016 flow [2024-01-31 16:06:36,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=6816, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7016, PETRI_PLACES=338, PETRI_TRANSITIONS=433} [2024-01-31 16:06:36,768 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 253 predicate places. [2024-01-31 16:06:36,768 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 433 transitions, 7016 flow [2024-01-31 16:06:36,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.666666666666668) internal successors, (222), 9 states have internal predecessors, (222), 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) [2024-01-31 16:06:36,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:36,769 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] [2024-01-31 16:06:36,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-01-31 16:06:36,769 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:06:36,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:36,769 INFO L85 PathProgramCache]: Analyzing trace with hash -820108969, now seen corresponding path program 8 times [2024-01-31 16:06:36,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:36,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064862547] [2024-01-31 16:06:36,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:36,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:36,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:37,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:37,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:37,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064862547] [2024-01-31 16:06:37,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064862547] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:37,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:37,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:06:37,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061416071] [2024-01-31 16:06:37,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:37,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:06:37,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:37,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:06:37,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:06:37,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:06:37,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 433 transitions, 7016 flow. Second operand has 9 states, 9 states have (on average 24.666666666666668) internal successors, (222), 9 states have internal predecessors, (222), 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) [2024-01-31 16:06:37,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:37,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:06:37,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:38,367 INFO L124 PetriNetUnfolderBase]: 3484/6576 cut-off events. [2024-01-31 16:06:38,367 INFO L125 PetriNetUnfolderBase]: For 95308/95846 co-relation queries the response was YES. [2024-01-31 16:06:38,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35361 conditions, 6576 events. 3484/6576 cut-off events. For 95308/95846 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 46825 event pairs, 944 based on Foata normal form. 140/6458 useless extension candidates. Maximal degree in co-relation 35243. Up to 5162 conditions per place. [2024-01-31 16:06:38,447 INFO L140 encePairwiseOnDemand]: 71/81 looper letters, 363 selfloop transitions, 74 changer transitions 0/472 dead transitions. [2024-01-31 16:06:38,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 472 transitions, 8070 flow [2024-01-31 16:06:38,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-31 16:06:38,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-31 16:06:38,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 364 transitions. [2024-01-31 16:06:38,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40852974186307517 [2024-01-31 16:06:38,449 INFO L175 Difference]: Start difference. First operand has 338 places, 433 transitions, 7016 flow. Second operand 11 states and 364 transitions. [2024-01-31 16:06:38,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 472 transitions, 8070 flow [2024-01-31 16:06:38,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 472 transitions, 7903 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-01-31 16:06:38,734 INFO L231 Difference]: Finished difference. Result has 342 places, 433 transitions, 7004 flow [2024-01-31 16:06:38,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=6849, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7004, PETRI_PLACES=342, PETRI_TRANSITIONS=433} [2024-01-31 16:06:38,735 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 257 predicate places. [2024-01-31 16:06:38,735 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 433 transitions, 7004 flow [2024-01-31 16:06:38,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.666666666666668) internal successors, (222), 9 states have internal predecessors, (222), 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) [2024-01-31 16:06:38,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:38,735 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] [2024-01-31 16:06:38,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-01-31 16:06:38,735 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:06:38,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:38,736 INFO L85 PathProgramCache]: Analyzing trace with hash -472306751, now seen corresponding path program 9 times [2024-01-31 16:06:38,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:38,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604217984] [2024-01-31 16:06:38,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:38,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:38,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:38,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:38,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:38,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604217984] [2024-01-31 16:06:38,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604217984] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:38,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:38,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:06:38,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971779262] [2024-01-31 16:06:38,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:38,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:06:38,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:38,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:06:38,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:06:38,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:06:38,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 433 transitions, 7004 flow. Second operand has 9 states, 9 states have (on average 24.666666666666668) internal successors, (222), 9 states have internal predecessors, (222), 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) [2024-01-31 16:06:38,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:38,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:06:38,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:40,269 INFO L124 PetriNetUnfolderBase]: 3530/6625 cut-off events. [2024-01-31 16:06:40,270 INFO L125 PetriNetUnfolderBase]: For 96207/96747 co-relation queries the response was YES. [2024-01-31 16:06:40,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35517 conditions, 6625 events. 3530/6625 cut-off events. For 96207/96747 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 46912 event pairs, 911 based on Foata normal form. 134/6503 useless extension candidates. Maximal degree in co-relation 35399. Up to 4869 conditions per place. [2024-01-31 16:06:40,344 INFO L140 encePairwiseOnDemand]: 71/81 looper letters, 346 selfloop transitions, 96 changer transitions 0/477 dead transitions. [2024-01-31 16:06:40,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 477 transitions, 8136 flow [2024-01-31 16:06:40,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-31 16:06:40,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-31 16:06:40,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 365 transitions. [2024-01-31 16:06:40,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409652076318743 [2024-01-31 16:06:40,345 INFO L175 Difference]: Start difference. First operand has 342 places, 433 transitions, 7004 flow. Second operand 11 states and 365 transitions. [2024-01-31 16:06:40,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 477 transitions, 8136 flow [2024-01-31 16:06:40,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 477 transitions, 7988 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-01-31 16:06:40,607 INFO L231 Difference]: Finished difference. Result has 344 places, 435 transitions, 7078 flow [2024-01-31 16:06:40,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=6856, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7078, PETRI_PLACES=344, PETRI_TRANSITIONS=435} [2024-01-31 16:06:40,607 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 259 predicate places. [2024-01-31 16:06:40,607 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 435 transitions, 7078 flow [2024-01-31 16:06:40,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.666666666666668) internal successors, (222), 9 states have internal predecessors, (222), 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) [2024-01-31 16:06:40,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:40,608 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] [2024-01-31 16:06:40,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-01-31 16:06:40,608 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:06:40,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:40,608 INFO L85 PathProgramCache]: Analyzing trace with hash 788746279, now seen corresponding path program 10 times [2024-01-31 16:06:40,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:40,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100246879] [2024-01-31 16:06:40,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:40,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:40,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:40,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:40,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:40,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100246879] [2024-01-31 16:06:40,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100246879] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:40,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:40,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:06:40,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796100560] [2024-01-31 16:06:40,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:40,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:06:40,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:40,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:06:40,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:06:40,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:06:40,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 435 transitions, 7078 flow. Second operand has 9 states, 9 states have (on average 24.666666666666668) internal successors, (222), 9 states have internal predecessors, (222), 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) [2024-01-31 16:06:40,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:40,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:06:40,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:42,281 INFO L124 PetriNetUnfolderBase]: 3569/6690 cut-off events. [2024-01-31 16:06:42,281 INFO L125 PetriNetUnfolderBase]: For 97210/97744 co-relation queries the response was YES. [2024-01-31 16:06:42,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35983 conditions, 6690 events. 3569/6690 cut-off events. For 97210/97744 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 47433 event pairs, 919 based on Foata normal form. 120/6554 useless extension candidates. Maximal degree in co-relation 35864. Up to 4886 conditions per place. [2024-01-31 16:06:42,363 INFO L140 encePairwiseOnDemand]: 68/81 looper letters, 342 selfloop transitions, 107 changer transitions 0/484 dead transitions. [2024-01-31 16:06:42,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 484 transitions, 8249 flow [2024-01-31 16:06:42,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-31 16:06:42,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-31 16:06:42,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 390 transitions. [2024-01-31 16:06:42,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4012345679012346 [2024-01-31 16:06:42,364 INFO L175 Difference]: Start difference. First operand has 344 places, 435 transitions, 7078 flow. Second operand 12 states and 390 transitions. [2024-01-31 16:06:42,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 484 transitions, 8249 flow [2024-01-31 16:06:42,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 484 transitions, 8086 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-01-31 16:06:42,641 INFO L231 Difference]: Finished difference. Result has 351 places, 444 transitions, 7265 flow [2024-01-31 16:06:42,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=6927, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7265, PETRI_PLACES=351, PETRI_TRANSITIONS=444} [2024-01-31 16:06:42,642 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 266 predicate places. [2024-01-31 16:06:42,642 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 444 transitions, 7265 flow [2024-01-31 16:06:42,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 24.666666666666668) internal successors, (222), 9 states have internal predecessors, (222), 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) [2024-01-31 16:06:42,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:42,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:42,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-01-31 16:06:42,642 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:06:42,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:42,643 INFO L85 PathProgramCache]: Analyzing trace with hash 2139510203, now seen corresponding path program 1 times [2024-01-31 16:06:42,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:42,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159904855] [2024-01-31 16:06:42,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:42,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:42,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:42,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:42,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:42,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159904855] [2024-01-31 16:06:42,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159904855] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:42,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:42,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:06:42,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003618531] [2024-01-31 16:06:42,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:42,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:06:42,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:42,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:06:42,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:06:42,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:06:42,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 444 transitions, 7265 flow. Second operand has 10 states, 10 states have (on average 24.7) internal successors, (247), 10 states have internal predecessors, (247), 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) [2024-01-31 16:06:42,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:42,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:06:42,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:44,220 INFO L124 PetriNetUnfolderBase]: 3265/6530 cut-off events. [2024-01-31 16:06:44,221 INFO L125 PetriNetUnfolderBase]: For 90371/91012 co-relation queries the response was YES. [2024-01-31 16:06:44,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34726 conditions, 6530 events. 3265/6530 cut-off events. For 90371/91012 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 49144 event pairs, 751 based on Foata normal form. 87/6306 useless extension candidates. Maximal degree in co-relation 34605. Up to 3419 conditions per place. [2024-01-31 16:06:44,297 INFO L140 encePairwiseOnDemand]: 72/81 looper letters, 355 selfloop transitions, 96 changer transitions 0/489 dead transitions. [2024-01-31 16:06:44,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 489 transitions, 8448 flow [2024-01-31 16:06:44,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:06:44,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:06:44,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 269 transitions. [2024-01-31 16:06:44,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47442680776014107 [2024-01-31 16:06:44,298 INFO L175 Difference]: Start difference. First operand has 351 places, 444 transitions, 7265 flow. Second operand 7 states and 269 transitions. [2024-01-31 16:06:44,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 489 transitions, 8448 flow [2024-01-31 16:06:44,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 489 transitions, 8239 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-01-31 16:06:44,558 INFO L231 Difference]: Finished difference. Result has 348 places, 445 transitions, 7273 flow [2024-01-31 16:06:44,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=7056, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7273, PETRI_PLACES=348, PETRI_TRANSITIONS=445} [2024-01-31 16:06:44,558 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 263 predicate places. [2024-01-31 16:06:44,558 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 445 transitions, 7273 flow [2024-01-31 16:06:44,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.7) internal successors, (247), 10 states have internal predecessors, (247), 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) [2024-01-31 16:06:44,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:44,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:44,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-01-31 16:06:44,559 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:06:44,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:44,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1630537525, now seen corresponding path program 2 times [2024-01-31 16:06:44,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:44,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687125746] [2024-01-31 16:06:44,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:44,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:44,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:44,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:44,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:44,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687125746] [2024-01-31 16:06:44,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687125746] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:44,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:44,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:06:44,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548641861] [2024-01-31 16:06:44,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:44,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:06:44,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:44,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:06:44,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:06:44,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:06:44,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 445 transitions, 7273 flow. Second operand has 10 states, 10 states have (on average 24.7) internal successors, (247), 10 states have internal predecessors, (247), 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) [2024-01-31 16:06:44,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:44,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:06:44,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:46,192 INFO L124 PetriNetUnfolderBase]: 3398/6851 cut-off events. [2024-01-31 16:06:46,193 INFO L125 PetriNetUnfolderBase]: For 91100/91727 co-relation queries the response was YES. [2024-01-31 16:06:46,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35714 conditions, 6851 events. 3398/6851 cut-off events. For 91100/91727 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 52163 event pairs, 611 based on Foata normal form. 94/6608 useless extension candidates. Maximal degree in co-relation 35595. Up to 3447 conditions per place. [2024-01-31 16:06:46,275 INFO L140 encePairwiseOnDemand]: 69/81 looper letters, 351 selfloop transitions, 113 changer transitions 0/502 dead transitions. [2024-01-31 16:06:46,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 502 transitions, 8596 flow [2024-01-31 16:06:46,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:06:46,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:06:46,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 278 transitions. [2024-01-31 16:06:46,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49029982363315694 [2024-01-31 16:06:46,276 INFO L175 Difference]: Start difference. First operand has 348 places, 445 transitions, 7273 flow. Second operand 7 states and 278 transitions. [2024-01-31 16:06:46,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 502 transitions, 8596 flow [2024-01-31 16:06:46,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 502 transitions, 8462 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-01-31 16:06:46,574 INFO L231 Difference]: Finished difference. Result has 351 places, 450 transitions, 7480 flow [2024-01-31 16:06:46,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=7145, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7480, PETRI_PLACES=351, PETRI_TRANSITIONS=450} [2024-01-31 16:06:46,574 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 266 predicate places. [2024-01-31 16:06:46,575 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 450 transitions, 7480 flow [2024-01-31 16:06:46,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.7) internal successors, (247), 10 states have internal predecessors, (247), 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) [2024-01-31 16:06:46,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:46,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:46,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-01-31 16:06:46,575 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:06:46,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:46,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1809413235, now seen corresponding path program 3 times [2024-01-31 16:06:46,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:46,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534093204] [2024-01-31 16:06:46,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:46,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:46,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:46,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:46,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:46,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534093204] [2024-01-31 16:06:46,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534093204] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:46,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:46,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:06:46,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576838221] [2024-01-31 16:06:46,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:46,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:06:46,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:46,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:06:46,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:06:46,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:06:46,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 450 transitions, 7480 flow. Second operand has 10 states, 10 states have (on average 24.7) internal successors, (247), 10 states have internal predecessors, (247), 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) [2024-01-31 16:06:46,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:46,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:06:46,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:48,270 INFO L124 PetriNetUnfolderBase]: 3482/6968 cut-off events. [2024-01-31 16:06:48,270 INFO L125 PetriNetUnfolderBase]: For 96832/97466 co-relation queries the response was YES. [2024-01-31 16:06:48,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37391 conditions, 6968 events. 3482/6968 cut-off events. For 96832/97466 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 53381 event pairs, 908 based on Foata normal form. 88/6720 useless extension candidates. Maximal degree in co-relation 37270. Up to 5171 conditions per place. [2024-01-31 16:06:48,352 INFO L140 encePairwiseOnDemand]: 69/81 looper letters, 404 selfloop transitions, 58 changer transitions 0/500 dead transitions. [2024-01-31 16:06:48,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 500 transitions, 8718 flow [2024-01-31 16:06:48,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:06:48,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:06:48,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 291 transitions. [2024-01-31 16:06:48,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44907407407407407 [2024-01-31 16:06:48,353 INFO L175 Difference]: Start difference. First operand has 351 places, 450 transitions, 7480 flow. Second operand 8 states and 291 transitions. [2024-01-31 16:06:48,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 500 transitions, 8718 flow [2024-01-31 16:06:48,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 500 transitions, 8556 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-01-31 16:06:48,637 INFO L231 Difference]: Finished difference. Result has 357 places, 458 transitions, 7605 flow [2024-01-31 16:06:48,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=7331, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7605, PETRI_PLACES=357, PETRI_TRANSITIONS=458} [2024-01-31 16:06:48,638 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 272 predicate places. [2024-01-31 16:06:48,638 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 458 transitions, 7605 flow [2024-01-31 16:06:48,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.7) internal successors, (247), 10 states have internal predecessors, (247), 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) [2024-01-31 16:06:48,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:48,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:48,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-01-31 16:06:48,639 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:06:48,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:48,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1655872503, now seen corresponding path program 4 times [2024-01-31 16:06:48,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:48,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608984161] [2024-01-31 16:06:48,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:48,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:48,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:48,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:48,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:48,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608984161] [2024-01-31 16:06:48,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608984161] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:48,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:48,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:06:48,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059618234] [2024-01-31 16:06:48,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:48,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:06:48,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:48,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:06:48,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:06:48,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:06:48,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 458 transitions, 7605 flow. Second operand has 10 states, 10 states have (on average 24.7) internal successors, (247), 10 states have internal predecessors, (247), 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) [2024-01-31 16:06:48,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:48,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:06:48,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:50,314 INFO L124 PetriNetUnfolderBase]: 3535/7006 cut-off events. [2024-01-31 16:06:50,314 INFO L125 PetriNetUnfolderBase]: For 97087/97713 co-relation queries the response was YES. [2024-01-31 16:06:50,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37535 conditions, 7006 events. 3535/7006 cut-off events. For 97087/97713 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 53517 event pairs, 774 based on Foata normal form. 88/6788 useless extension candidates. Maximal degree in co-relation 37412. Up to 5280 conditions per place. [2024-01-31 16:06:50,566 INFO L140 encePairwiseOnDemand]: 70/81 looper letters, 401 selfloop transitions, 60 changer transitions 0/499 dead transitions. [2024-01-31 16:06:50,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 499 transitions, 8733 flow [2024-01-31 16:06:50,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:06:50,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:06:50,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 288 transitions. [2024-01-31 16:06:50,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-01-31 16:06:50,568 INFO L175 Difference]: Start difference. First operand has 357 places, 458 transitions, 7605 flow. Second operand 8 states and 288 transitions. [2024-01-31 16:06:50,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 499 transitions, 8733 flow [2024-01-31 16:06:50,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 499 transitions, 8663 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-01-31 16:06:50,827 INFO L231 Difference]: Finished difference. Result has 362 places, 459 transitions, 7682 flow [2024-01-31 16:06:50,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=7535, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7682, PETRI_PLACES=362, PETRI_TRANSITIONS=459} [2024-01-31 16:06:50,828 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 277 predicate places. [2024-01-31 16:06:50,828 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 459 transitions, 7682 flow [2024-01-31 16:06:50,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.7) internal successors, (247), 10 states have internal predecessors, (247), 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) [2024-01-31 16:06:50,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:50,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:50,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-01-31 16:06:50,828 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:06:50,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:50,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1429758813, now seen corresponding path program 5 times [2024-01-31 16:06:50,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:50,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850327173] [2024-01-31 16:06:50,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:50,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:50,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:51,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:51,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:51,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850327173] [2024-01-31 16:06:51,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850327173] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:51,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:51,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:06:51,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884962971] [2024-01-31 16:06:51,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:51,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:06:51,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:51,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:06:51,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:06:51,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:06:51,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 459 transitions, 7682 flow. Second operand has 10 states, 10 states have (on average 24.7) internal successors, (247), 10 states have internal predecessors, (247), 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) [2024-01-31 16:06:51,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:51,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:06:51,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:52,521 INFO L124 PetriNetUnfolderBase]: 3467/6922 cut-off events. [2024-01-31 16:06:52,521 INFO L125 PetriNetUnfolderBase]: For 97605/98231 co-relation queries the response was YES. [2024-01-31 16:06:52,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37027 conditions, 6922 events. 3467/6922 cut-off events. For 97605/98231 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 52836 event pairs, 840 based on Foata normal form. 88/6688 useless extension candidates. Maximal degree in co-relation 36903. Up to 4832 conditions per place. [2024-01-31 16:06:52,610 INFO L140 encePairwiseOnDemand]: 70/81 looper letters, 388 selfloop transitions, 68 changer transitions 0/494 dead transitions. [2024-01-31 16:06:52,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 494 transitions, 8731 flow [2024-01-31 16:06:52,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:06:52,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:06:52,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 282 transitions. [2024-01-31 16:06:52,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4351851851851852 [2024-01-31 16:06:52,611 INFO L175 Difference]: Start difference. First operand has 362 places, 459 transitions, 7682 flow. Second operand 8 states and 282 transitions. [2024-01-31 16:06:52,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 494 transitions, 8731 flow [2024-01-31 16:06:52,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 494 transitions, 8604 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-01-31 16:06:52,943 INFO L231 Difference]: Finished difference. Result has 362 places, 457 transitions, 7677 flow [2024-01-31 16:06:52,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=7515, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7677, PETRI_PLACES=362, PETRI_TRANSITIONS=457} [2024-01-31 16:06:52,943 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 277 predicate places. [2024-01-31 16:06:52,944 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 457 transitions, 7677 flow [2024-01-31 16:06:52,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.7) internal successors, (247), 10 states have internal predecessors, (247), 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) [2024-01-31 16:06:52,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:52,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:52,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-01-31 16:06:52,944 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:06:52,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:52,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1425918433, now seen corresponding path program 1 times [2024-01-31 16:06:52,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:52,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625885333] [2024-01-31 16:06:52,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:52,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:52,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:53,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:53,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:53,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625885333] [2024-01-31 16:06:53,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625885333] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:53,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:53,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:06:53,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503325547] [2024-01-31 16:06:53,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:53,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:06:53,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:53,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:06:53,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:06:53,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:06:53,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 457 transitions, 7677 flow. Second operand has 10 states, 10 states have (on average 24.7) internal successors, (247), 10 states have internal predecessors, (247), 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) [2024-01-31 16:06:53,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:53,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:06:53,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:54,838 INFO L124 PetriNetUnfolderBase]: 3653/7188 cut-off events. [2024-01-31 16:06:54,838 INFO L125 PetriNetUnfolderBase]: For 107095/107801 co-relation queries the response was YES. [2024-01-31 16:06:54,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38378 conditions, 7188 events. 3653/7188 cut-off events. For 107095/107801 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 54048 event pairs, 598 based on Foata normal form. 172/7012 useless extension candidates. Maximal degree in co-relation 38255. Up to 3147 conditions per place. [2024-01-31 16:06:54,912 INFO L140 encePairwiseOnDemand]: 69/81 looper letters, 370 selfloop transitions, 124 changer transitions 0/531 dead transitions. [2024-01-31 16:06:54,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 531 transitions, 9275 flow [2024-01-31 16:06:54,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:06:54,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:06:54,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 343 transitions. [2024-01-31 16:06:54,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47050754458161864 [2024-01-31 16:06:54,913 INFO L175 Difference]: Start difference. First operand has 362 places, 457 transitions, 7677 flow. Second operand 9 states and 343 transitions. [2024-01-31 16:06:54,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 531 transitions, 9275 flow [2024-01-31 16:06:55,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 531 transitions, 9093 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-01-31 16:06:55,209 INFO L231 Difference]: Finished difference. Result has 365 places, 460 transitions, 7809 flow [2024-01-31 16:06:55,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=7519, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7809, PETRI_PLACES=365, PETRI_TRANSITIONS=460} [2024-01-31 16:06:55,209 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 280 predicate places. [2024-01-31 16:06:55,210 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 460 transitions, 7809 flow [2024-01-31 16:06:55,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.7) internal successors, (247), 10 states have internal predecessors, (247), 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) [2024-01-31 16:06:55,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:55,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:55,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-01-31 16:06:55,210 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:06:55,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:55,210 INFO L85 PathProgramCache]: Analyzing trace with hash -2039591103, now seen corresponding path program 2 times [2024-01-31 16:06:55,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:55,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502147503] [2024-01-31 16:06:55,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:55,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:55,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:55,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:55,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:55,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502147503] [2024-01-31 16:06:55,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502147503] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:55,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:55,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:06:55,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373143293] [2024-01-31 16:06:55,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:55,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:06:55,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:55,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:06:55,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:06:55,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:06:55,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 460 transitions, 7809 flow. Second operand has 10 states, 10 states have (on average 24.7) internal successors, (247), 10 states have internal predecessors, (247), 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) [2024-01-31 16:06:55,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:55,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:06:55,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:57,064 INFO L124 PetriNetUnfolderBase]: 3778/7391 cut-off events. [2024-01-31 16:06:57,065 INFO L125 PetriNetUnfolderBase]: For 113069/113790 co-relation queries the response was YES. [2024-01-31 16:06:57,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39902 conditions, 7391 events. 3778/7391 cut-off events. For 113069/113790 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 55503 event pairs, 678 based on Foata normal form. 178/7223 useless extension candidates. Maximal degree in co-relation 39778. Up to 3162 conditions per place. [2024-01-31 16:06:57,157 INFO L140 encePairwiseOnDemand]: 65/81 looper letters, 397 selfloop transitions, 125 changer transitions 0/559 dead transitions. [2024-01-31 16:06:57,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 559 transitions, 9727 flow [2024-01-31 16:06:57,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 16:06:57,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 16:06:57,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 392 transitions. [2024-01-31 16:06:57,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4839506172839506 [2024-01-31 16:06:57,160 INFO L175 Difference]: Start difference. First operand has 365 places, 460 transitions, 7809 flow. Second operand 10 states and 392 transitions. [2024-01-31 16:06:57,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 559 transitions, 9727 flow [2024-01-31 16:06:57,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 559 transitions, 9376 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-01-31 16:06:57,537 INFO L231 Difference]: Finished difference. Result has 366 places, 464 transitions, 7773 flow [2024-01-31 16:06:57,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=7484, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7773, PETRI_PLACES=366, PETRI_TRANSITIONS=464} [2024-01-31 16:06:57,538 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 281 predicate places. [2024-01-31 16:06:57,538 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 464 transitions, 7773 flow [2024-01-31 16:06:57,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.7) internal successors, (247), 10 states have internal predecessors, (247), 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) [2024-01-31 16:06:57,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:57,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:57,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-01-31 16:06:57,539 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:06:57,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:57,539 INFO L85 PathProgramCache]: Analyzing trace with hash 784145033, now seen corresponding path program 3 times [2024-01-31 16:06:57,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:57,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344131812] [2024-01-31 16:06:57,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:57,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:57,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:57,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:57,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:57,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344131812] [2024-01-31 16:06:57,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344131812] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:57,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:57,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:06:57,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181276702] [2024-01-31 16:06:57,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:57,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:06:57,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:57,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:06:57,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:06:57,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:06:57,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 464 transitions, 7773 flow. Second operand has 10 states, 10 states have (on average 24.7) internal successors, (247), 10 states have internal predecessors, (247), 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) [2024-01-31 16:06:57,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:57,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:06:57,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:59,470 INFO L124 PetriNetUnfolderBase]: 3885/7650 cut-off events. [2024-01-31 16:06:59,470 INFO L125 PetriNetUnfolderBase]: For 117175/117888 co-relation queries the response was YES. [2024-01-31 16:06:59,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40427 conditions, 7650 events. 3885/7650 cut-off events. For 117175/117888 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 58659 event pairs, 1114 based on Foata normal form. 190/7457 useless extension candidates. Maximal degree in co-relation 40307. Up to 5485 conditions per place. [2024-01-31 16:06:59,561 INFO L140 encePairwiseOnDemand]: 69/81 looper letters, 415 selfloop transitions, 71 changer transitions 0/523 dead transitions. [2024-01-31 16:06:59,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 523 transitions, 9140 flow [2024-01-31 16:06:59,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:06:59,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:06:59,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 328 transitions. [2024-01-31 16:06:59,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4499314128943759 [2024-01-31 16:06:59,564 INFO L175 Difference]: Start difference. First operand has 366 places, 464 transitions, 7773 flow. Second operand 9 states and 328 transitions. [2024-01-31 16:06:59,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 523 transitions, 9140 flow [2024-01-31 16:06:59,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 523 transitions, 9004 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-01-31 16:06:59,908 INFO L231 Difference]: Finished difference. Result has 370 places, 467 transitions, 7825 flow [2024-01-31 16:06:59,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=7643, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7825, PETRI_PLACES=370, PETRI_TRANSITIONS=467} [2024-01-31 16:06:59,909 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 285 predicate places. [2024-01-31 16:06:59,909 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 467 transitions, 7825 flow [2024-01-31 16:06:59,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.7) internal successors, (247), 10 states have internal predecessors, (247), 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) [2024-01-31 16:06:59,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:59,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:59,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-01-31 16:06:59,909 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:06:59,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:59,909 INFO L85 PathProgramCache]: Analyzing trace with hash -54594819, now seen corresponding path program 4 times [2024-01-31 16:06:59,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:59,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798532752] [2024-01-31 16:06:59,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:59,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:59,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:00,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:00,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:00,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798532752] [2024-01-31 16:07:00,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798532752] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:00,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:00,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:07:00,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275910262] [2024-01-31 16:07:00,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:00,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:07:00,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:00,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:07:00,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:07:00,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:07:00,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 467 transitions, 7825 flow. Second operand has 10 states, 10 states have (on average 24.7) internal successors, (247), 10 states have internal predecessors, (247), 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) [2024-01-31 16:07:00,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:00,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:07:00,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:01,795 INFO L124 PetriNetUnfolderBase]: 3817/7502 cut-off events. [2024-01-31 16:07:01,795 INFO L125 PetriNetUnfolderBase]: For 117538/118250 co-relation queries the response was YES. [2024-01-31 16:07:01,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39539 conditions, 7502 events. 3817/7502 cut-off events. For 117538/118250 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 57167 event pairs, 1091 based on Foata normal form. 190/7321 useless extension candidates. Maximal degree in co-relation 39418. Up to 5481 conditions per place. [2024-01-31 16:07:02,062 INFO L140 encePairwiseOnDemand]: 65/81 looper letters, 405 selfloop transitions, 85 changer transitions 0/527 dead transitions. [2024-01-31 16:07:02,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 527 transitions, 9136 flow [2024-01-31 16:07:02,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-31 16:07:02,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-31 16:07:02,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 414 transitions. [2024-01-31 16:07:02,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42592592592592593 [2024-01-31 16:07:02,063 INFO L175 Difference]: Start difference. First operand has 370 places, 467 transitions, 7825 flow. Second operand 12 states and 414 transitions. [2024-01-31 16:07:02,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 527 transitions, 9136 flow [2024-01-31 16:07:02,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 527 transitions, 9039 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-01-31 16:07:02,369 INFO L231 Difference]: Finished difference. Result has 376 places, 467 transitions, 7913 flow [2024-01-31 16:07:02,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=7728, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7913, PETRI_PLACES=376, PETRI_TRANSITIONS=467} [2024-01-31 16:07:02,370 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 291 predicate places. [2024-01-31 16:07:02,370 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 467 transitions, 7913 flow [2024-01-31 16:07:02,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.7) internal successors, (247), 10 states have internal predecessors, (247), 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) [2024-01-31 16:07:02,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:02,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:07:02,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-01-31 16:07:02,371 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:07:02,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:02,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1312281282, now seen corresponding path program 1 times [2024-01-31 16:07:02,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:02,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122386410] [2024-01-31 16:07:02,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:02,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:02,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:02,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:02,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:02,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122386410] [2024-01-31 16:07:02,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122386410] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:02,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:02,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:07:02,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960491086] [2024-01-31 16:07:02,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:02,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:07:02,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:02,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:07:02,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:07:02,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 81 [2024-01-31 16:07:02,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 467 transitions, 7913 flow. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:02,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:02,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 81 [2024-01-31 16:07:02,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:03,792 INFO L124 PetriNetUnfolderBase]: 3464/6767 cut-off events. [2024-01-31 16:07:03,792 INFO L125 PetriNetUnfolderBase]: For 116583/117573 co-relation queries the response was YES. [2024-01-31 16:07:03,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36790 conditions, 6767 events. 3464/6767 cut-off events. For 116583/117573 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 51048 event pairs, 597 based on Foata normal form. 145/6684 useless extension candidates. Maximal degree in co-relation 36667. Up to 2637 conditions per place. [2024-01-31 16:07:03,879 INFO L140 encePairwiseOnDemand]: 73/81 looper letters, 404 selfloop transitions, 67 changer transitions 0/533 dead transitions. [2024-01-31 16:07:03,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 533 transitions, 9519 flow [2024-01-31 16:07:03,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:07:03,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:07:03,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 312 transitions. [2024-01-31 16:07:03,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5502645502645502 [2024-01-31 16:07:03,881 INFO L175 Difference]: Start difference. First operand has 376 places, 467 transitions, 7913 flow. Second operand 7 states and 312 transitions. [2024-01-31 16:07:03,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 533 transitions, 9519 flow [2024-01-31 16:07:04,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 533 transitions, 9321 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-01-31 16:07:04,178 INFO L231 Difference]: Finished difference. Result has 374 places, 476 transitions, 8021 flow [2024-01-31 16:07:04,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=7727, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8021, PETRI_PLACES=374, PETRI_TRANSITIONS=476} [2024-01-31 16:07:04,179 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 289 predicate places. [2024-01-31 16:07:04,179 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 476 transitions, 8021 flow [2024-01-31 16:07:04,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:04,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:04,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:07:04,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-01-31 16:07:04,179 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:07:04,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:04,179 INFO L85 PathProgramCache]: Analyzing trace with hash -267651783, now seen corresponding path program 5 times [2024-01-31 16:07:04,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:04,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794738821] [2024-01-31 16:07:04,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:04,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:04,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:04,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:04,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:04,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794738821] [2024-01-31 16:07:04,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794738821] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:04,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:04,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:07:04,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431513192] [2024-01-31 16:07:04,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:04,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:07:04,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:04,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:07:04,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:07:04,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:07:04,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 476 transitions, 8021 flow. Second operand has 10 states, 10 states have (on average 24.7) internal successors, (247), 10 states have internal predecessors, (247), 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) [2024-01-31 16:07:04,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:04,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:07:04,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:06,235 INFO L124 PetriNetUnfolderBase]: 4014/7884 cut-off events. [2024-01-31 16:07:06,235 INFO L125 PetriNetUnfolderBase]: For 130472/131122 co-relation queries the response was YES. [2024-01-31 16:07:06,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43128 conditions, 7884 events. 4014/7884 cut-off events. For 130472/131122 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 60081 event pairs, 1158 based on Foata normal form. 192/8005 useless extension candidates. Maximal degree in co-relation 43001. Up to 5709 conditions per place. [2024-01-31 16:07:06,327 INFO L140 encePairwiseOnDemand]: 69/81 looper letters, 425 selfloop transitions, 73 changer transitions 0/535 dead transitions. [2024-01-31 16:07:06,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 535 transitions, 9446 flow [2024-01-31 16:07:06,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:07:06,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:07:06,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 326 transitions. [2024-01-31 16:07:06,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44718792866941015 [2024-01-31 16:07:06,328 INFO L175 Difference]: Start difference. First operand has 374 places, 476 transitions, 8021 flow. Second operand 9 states and 326 transitions. [2024-01-31 16:07:06,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 535 transitions, 9446 flow [2024-01-31 16:07:06,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 535 transitions, 9444 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-01-31 16:07:06,718 INFO L231 Difference]: Finished difference. Result has 383 places, 480 transitions, 8219 flow [2024-01-31 16:07:06,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=8019, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8219, PETRI_PLACES=383, PETRI_TRANSITIONS=480} [2024-01-31 16:07:06,718 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 298 predicate places. [2024-01-31 16:07:06,718 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 480 transitions, 8219 flow [2024-01-31 16:07:06,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.7) internal successors, (247), 10 states have internal predecessors, (247), 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) [2024-01-31 16:07:06,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:06,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:07:06,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-01-31 16:07:06,719 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:07:06,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:06,719 INFO L85 PathProgramCache]: Analyzing trace with hash -458595101, now seen corresponding path program 6 times [2024-01-31 16:07:06,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:06,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593090818] [2024-01-31 16:07:06,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:06,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:06,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:06,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:06,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:06,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593090818] [2024-01-31 16:07:06,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593090818] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:06,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:06,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:07:06,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340605140] [2024-01-31 16:07:06,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:06,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:07:06,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:06,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:07:06,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:07:07,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:07:07,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 480 transitions, 8219 flow. Second operand has 10 states, 10 states have (on average 24.7) internal successors, (247), 10 states have internal predecessors, (247), 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) [2024-01-31 16:07:07,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:07,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:07:07,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:08,674 INFO L124 PetriNetUnfolderBase]: 4077/7967 cut-off events. [2024-01-31 16:07:08,675 INFO L125 PetriNetUnfolderBase]: For 136585/137259 co-relation queries the response was YES. [2024-01-31 16:07:08,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44177 conditions, 7967 events. 4077/7967 cut-off events. For 136585/137259 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 60431 event pairs, 593 based on Foata normal form. 198/8097 useless extension candidates. Maximal degree in co-relation 44047. Up to 3247 conditions per place. [2024-01-31 16:07:08,778 INFO L140 encePairwiseOnDemand]: 66/81 looper letters, 364 selfloop transitions, 159 changer transitions 0/560 dead transitions. [2024-01-31 16:07:08,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 560 transitions, 10018 flow [2024-01-31 16:07:08,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:07:08,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:07:08,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 346 transitions. [2024-01-31 16:07:08,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47462277091906724 [2024-01-31 16:07:08,779 INFO L175 Difference]: Start difference. First operand has 383 places, 480 transitions, 8219 flow. Second operand 9 states and 346 transitions. [2024-01-31 16:07:08,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 560 transitions, 10018 flow [2024-01-31 16:07:09,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 560 transitions, 9933 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-01-31 16:07:09,214 INFO L231 Difference]: Finished difference. Result has 388 places, 487 transitions, 8593 flow [2024-01-31 16:07:09,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=8134, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8593, PETRI_PLACES=388, PETRI_TRANSITIONS=487} [2024-01-31 16:07:09,215 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 303 predicate places. [2024-01-31 16:07:09,215 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 487 transitions, 8593 flow [2024-01-31 16:07:09,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.7) internal successors, (247), 10 states have internal predecessors, (247), 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) [2024-01-31 16:07:09,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:09,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:07:09,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-01-31 16:07:09,215 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:07:09,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:09,215 INFO L85 PathProgramCache]: Analyzing trace with hash 978042501, now seen corresponding path program 7 times [2024-01-31 16:07:09,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:09,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668138226] [2024-01-31 16:07:09,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:09,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:09,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:09,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:09,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:09,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668138226] [2024-01-31 16:07:09,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668138226] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:09,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:09,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:07:09,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922625289] [2024-01-31 16:07:09,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:09,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:07:09,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:09,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:07:09,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:07:09,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:07:09,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 487 transitions, 8593 flow. Second operand has 10 states, 10 states have (on average 24.7) internal successors, (247), 10 states have internal predecessors, (247), 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) [2024-01-31 16:07:09,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:09,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:07:09,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:11,222 INFO L124 PetriNetUnfolderBase]: 3993/7827 cut-off events. [2024-01-31 16:07:11,222 INFO L125 PetriNetUnfolderBase]: For 141518/142175 co-relation queries the response was YES. [2024-01-31 16:07:11,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44783 conditions, 7827 events. 3993/7827 cut-off events. For 141518/142175 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 59502 event pairs, 1146 based on Foata normal form. 184/7940 useless extension candidates. Maximal degree in co-relation 44650. Up to 5788 conditions per place. [2024-01-31 16:07:11,316 INFO L140 encePairwiseOnDemand]: 69/81 looper letters, 431 selfloop transitions, 75 changer transitions 0/543 dead transitions. [2024-01-31 16:07:11,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 543 transitions, 9960 flow [2024-01-31 16:07:11,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-31 16:07:11,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-31 16:07:11,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 377 transitions. [2024-01-31 16:07:11,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42312008978675647 [2024-01-31 16:07:11,318 INFO L175 Difference]: Start difference. First operand has 388 places, 487 transitions, 8593 flow. Second operand 11 states and 377 transitions. [2024-01-31 16:07:11,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 543 transitions, 9960 flow [2024-01-31 16:07:11,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 543 transitions, 9675 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-01-31 16:07:11,714 INFO L231 Difference]: Finished difference. Result has 392 places, 487 transitions, 8495 flow [2024-01-31 16:07:11,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=8330, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8495, PETRI_PLACES=392, PETRI_TRANSITIONS=487} [2024-01-31 16:07:11,714 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 307 predicate places. [2024-01-31 16:07:11,714 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 487 transitions, 8495 flow [2024-01-31 16:07:11,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.7) internal successors, (247), 10 states have internal predecessors, (247), 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) [2024-01-31 16:07:11,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:11,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:07:11,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-01-31 16:07:11,715 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:07:11,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:11,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1324537139, now seen corresponding path program 8 times [2024-01-31 16:07:11,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:11,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518905638] [2024-01-31 16:07:11,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:11,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:11,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:11,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:11,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:11,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518905638] [2024-01-31 16:07:11,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518905638] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:11,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:11,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:07:11,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2257461] [2024-01-31 16:07:11,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:11,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:07:11,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:11,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:07:11,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:07:12,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:07:12,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 487 transitions, 8495 flow. Second operand has 10 states, 10 states have (on average 24.7) internal successors, (247), 10 states have internal predecessors, (247), 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) [2024-01-31 16:07:12,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:12,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:07:12,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:13,858 INFO L124 PetriNetUnfolderBase]: 4135/8164 cut-off events. [2024-01-31 16:07:13,858 INFO L125 PetriNetUnfolderBase]: For 142391/143039 co-relation queries the response was YES. [2024-01-31 16:07:13,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45111 conditions, 8164 events. 4135/8164 cut-off events. For 142391/143039 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 62931 event pairs, 1088 based on Foata normal form. 178/8264 useless extension candidates. Maximal degree in co-relation 44979. Up to 4906 conditions per place. [2024-01-31 16:07:13,952 INFO L140 encePairwiseOnDemand]: 70/81 looper letters, 395 selfloop transitions, 103 changer transitions 0/535 dead transitions. [2024-01-31 16:07:13,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 535 transitions, 9875 flow [2024-01-31 16:07:13,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:07:13,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:07:13,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 293 transitions. [2024-01-31 16:07:13,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4521604938271605 [2024-01-31 16:07:13,953 INFO L175 Difference]: Start difference. First operand has 392 places, 487 transitions, 8495 flow. Second operand 8 states and 293 transitions. [2024-01-31 16:07:13,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 535 transitions, 9875 flow [2024-01-31 16:07:14,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 535 transitions, 9711 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-01-31 16:07:14,424 INFO L231 Difference]: Finished difference. Result has 390 places, 490 transitions, 8603 flow [2024-01-31 16:07:14,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=8331, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8603, PETRI_PLACES=390, PETRI_TRANSITIONS=490} [2024-01-31 16:07:14,425 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 305 predicate places. [2024-01-31 16:07:14,425 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 490 transitions, 8603 flow [2024-01-31 16:07:14,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.7) internal successors, (247), 10 states have internal predecessors, (247), 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) [2024-01-31 16:07:14,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:14,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:07:14,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-01-31 16:07:14,425 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:07:14,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:14,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1325844719, now seen corresponding path program 9 times [2024-01-31 16:07:14,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:14,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348100025] [2024-01-31 16:07:14,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:14,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:14,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:14,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:14,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:14,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348100025] [2024-01-31 16:07:14,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348100025] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:14,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:14,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:07:14,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676481472] [2024-01-31 16:07:14,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:14,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:07:14,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:14,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:07:14,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:07:14,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:07:14,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 490 transitions, 8603 flow. Second operand has 10 states, 10 states have (on average 24.7) internal successors, (247), 10 states have internal predecessors, (247), 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) [2024-01-31 16:07:14,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:14,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:07:14,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:16,554 INFO L124 PetriNetUnfolderBase]: 4199/8332 cut-off events. [2024-01-31 16:07:16,554 INFO L125 PetriNetUnfolderBase]: For 148008/148656 co-relation queries the response was YES. [2024-01-31 16:07:16,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46140 conditions, 8332 events. 4199/8332 cut-off events. For 148008/148656 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 64778 event pairs, 1109 based on Foata normal form. 178/8432 useless extension candidates. Maximal degree in co-relation 46007. Up to 4918 conditions per place. [2024-01-31 16:07:16,672 INFO L140 encePairwiseOnDemand]: 70/81 looper letters, 408 selfloop transitions, 109 changer transitions 0/554 dead transitions. [2024-01-31 16:07:16,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 554 transitions, 10142 flow [2024-01-31 16:07:16,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 16:07:16,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 16:07:16,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 360 transitions. [2024-01-31 16:07:16,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-01-31 16:07:16,674 INFO L175 Difference]: Start difference. First operand has 390 places, 490 transitions, 8603 flow. Second operand 10 states and 360 transitions. [2024-01-31 16:07:16,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 554 transitions, 10142 flow [2024-01-31 16:07:17,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 554 transitions, 9985 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-01-31 16:07:17,170 INFO L231 Difference]: Finished difference. Result has 393 places, 492 transitions, 8724 flow [2024-01-31 16:07:17,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=8466, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8724, PETRI_PLACES=393, PETRI_TRANSITIONS=492} [2024-01-31 16:07:17,170 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 308 predicate places. [2024-01-31 16:07:17,171 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 492 transitions, 8724 flow [2024-01-31 16:07:17,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.7) internal successors, (247), 10 states have internal predecessors, (247), 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) [2024-01-31 16:07:17,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:17,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:07:17,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-01-31 16:07:17,171 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:07:17,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:17,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1708069547, now seen corresponding path program 10 times [2024-01-31 16:07:17,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:17,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489683548] [2024-01-31 16:07:17,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:17,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:17,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:17,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:17,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:17,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489683548] [2024-01-31 16:07:17,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489683548] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:17,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:17,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:07:17,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479342957] [2024-01-31 16:07:17,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:17,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:07:17,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:17,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:07:17,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:07:17,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:07:17,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 492 transitions, 8724 flow. Second operand has 10 states, 10 states have (on average 24.7) internal successors, (247), 10 states have internal predecessors, (247), 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) [2024-01-31 16:07:17,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:17,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:07:17,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:19,453 INFO L124 PetriNetUnfolderBase]: 4275/8454 cut-off events. [2024-01-31 16:07:19,453 INFO L125 PetriNetUnfolderBase]: For 144568/145216 co-relation queries the response was YES. [2024-01-31 16:07:19,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46539 conditions, 8454 events. 4275/8454 cut-off events. For 144568/145216 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 65748 event pairs, 1059 based on Foata normal form. 170/8548 useless extension candidates. Maximal degree in co-relation 46407. Up to 4950 conditions per place. [2024-01-31 16:07:19,575 INFO L140 encePairwiseOnDemand]: 67/81 looper letters, 393 selfloop transitions, 125 changer transitions 0/555 dead transitions. [2024-01-31 16:07:19,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 555 transitions, 10211 flow [2024-01-31 16:07:19,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-31 16:07:19,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-31 16:07:19,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 378 transitions. [2024-01-31 16:07:19,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-01-31 16:07:19,576 INFO L175 Difference]: Start difference. First operand has 393 places, 492 transitions, 8724 flow. Second operand 11 states and 378 transitions. [2024-01-31 16:07:19,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 555 transitions, 10211 flow [2024-01-31 16:07:20,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 555 transitions, 9971 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-01-31 16:07:20,049 INFO L231 Difference]: Finished difference. Result has 397 places, 501 transitions, 8908 flow [2024-01-31 16:07:20,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=8496, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8908, PETRI_PLACES=397, PETRI_TRANSITIONS=501} [2024-01-31 16:07:20,050 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 312 predicate places. [2024-01-31 16:07:20,050 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 501 transitions, 8908 flow [2024-01-31 16:07:20,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.7) internal successors, (247), 10 states have internal predecessors, (247), 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) [2024-01-31 16:07:20,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:20,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:07:20,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-01-31 16:07:20,051 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:07:20,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:20,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1844699252, now seen corresponding path program 1 times [2024-01-31 16:07:20,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:20,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418964645] [2024-01-31 16:07:20,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:20,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:20,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:20,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:20,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:20,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418964645] [2024-01-31 16:07:20,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418964645] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:20,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:20,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:07:20,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284303403] [2024-01-31 16:07:20,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:20,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:07:20,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:20,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:07:20,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:07:20,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 81 [2024-01-31 16:07:20,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 501 transitions, 8908 flow. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:20,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:20,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 81 [2024-01-31 16:07:20,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:21,695 INFO L124 PetriNetUnfolderBase]: 3793/7424 cut-off events. [2024-01-31 16:07:21,695 INFO L125 PetriNetUnfolderBase]: For 140756/142584 co-relation queries the response was YES. [2024-01-31 16:07:21,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42378 conditions, 7424 events. 3793/7424 cut-off events. For 140756/142584 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 57606 event pairs, 1137 based on Foata normal form. 295/7457 useless extension candidates. Maximal degree in co-relation 42244. Up to 4604 conditions per place. [2024-01-31 16:07:21,802 INFO L140 encePairwiseOnDemand]: 77/81 looper letters, 465 selfloop transitions, 5 changer transitions 0/536 dead transitions. [2024-01-31 16:07:21,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 536 transitions, 10311 flow [2024-01-31 16:07:21,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:07:21,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:07:21,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 179 transitions. [2024-01-31 16:07:21,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5524691358024691 [2024-01-31 16:07:21,803 INFO L175 Difference]: Start difference. First operand has 397 places, 501 transitions, 8908 flow. Second operand 4 states and 179 transitions. [2024-01-31 16:07:21,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 536 transitions, 10311 flow [2024-01-31 16:07:22,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 536 transitions, 10002 flow, removed 37 selfloop flow, removed 11 redundant places. [2024-01-31 16:07:22,327 INFO L231 Difference]: Finished difference. Result has 388 places, 500 transitions, 8653 flow [2024-01-31 16:07:22,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=8643, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=8653, PETRI_PLACES=388, PETRI_TRANSITIONS=500} [2024-01-31 16:07:22,327 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 303 predicate places. [2024-01-31 16:07:22,328 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 500 transitions, 8653 flow [2024-01-31 16:07:22,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:22,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:22,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:07:22,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-01-31 16:07:22,328 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:07:22,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:22,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1886180416, now seen corresponding path program 1 times [2024-01-31 16:07:22,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:22,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044747153] [2024-01-31 16:07:22,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:22,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:22,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:22,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:22,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:22,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044747153] [2024-01-31 16:07:22,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044747153] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:22,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:22,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:07:22,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242538634] [2024-01-31 16:07:22,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:22,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:07:22,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:22,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:07:22,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:07:22,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 81 [2024-01-31 16:07:22,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 500 transitions, 8653 flow. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 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) [2024-01-31 16:07:22,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:22,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 81 [2024-01-31 16:07:22,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:23,842 INFO L124 PetriNetUnfolderBase]: 3168/6904 cut-off events. [2024-01-31 16:07:23,843 INFO L125 PetriNetUnfolderBase]: For 133333/134430 co-relation queries the response was YES. [2024-01-31 16:07:23,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38092 conditions, 6904 events. 3168/6904 cut-off events. For 133333/134430 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 58172 event pairs, 482 based on Foata normal form. 264/6908 useless extension candidates. Maximal degree in co-relation 37962. Up to 2365 conditions per place. [2024-01-31 16:07:23,927 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 366 selfloop transitions, 115 changer transitions 0/551 dead transitions. [2024-01-31 16:07:23,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 551 transitions, 10141 flow [2024-01-31 16:07:23,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:07:23,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:07:23,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 204 transitions. [2024-01-31 16:07:23,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6296296296296297 [2024-01-31 16:07:23,928 INFO L175 Difference]: Start difference. First operand has 388 places, 500 transitions, 8653 flow. Second operand 4 states and 204 transitions. [2024-01-31 16:07:23,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 551 transitions, 10141 flow [2024-01-31 16:07:24,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 551 transitions, 10131 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-31 16:07:24,280 INFO L231 Difference]: Finished difference. Result has 389 places, 501 transitions, 9001 flow [2024-01-31 16:07:24,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=8643, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=9001, PETRI_PLACES=389, PETRI_TRANSITIONS=501} [2024-01-31 16:07:24,280 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 304 predicate places. [2024-01-31 16:07:24,280 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 501 transitions, 9001 flow [2024-01-31 16:07:24,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 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) [2024-01-31 16:07:24,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:24,280 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] [2024-01-31 16:07:24,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-01-31 16:07:24,281 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:07:24,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:24,281 INFO L85 PathProgramCache]: Analyzing trace with hash 966318328, now seen corresponding path program 2 times [2024-01-31 16:07:24,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:24,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029984623] [2024-01-31 16:07:24,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:24,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:24,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:24,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:24,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:24,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029984623] [2024-01-31 16:07:24,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029984623] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:24,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:24,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:07:24,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343120537] [2024-01-31 16:07:24,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:24,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:07:24,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:24,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:07:24,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:07:24,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 81 [2024-01-31 16:07:24,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 501 transitions, 9001 flow. Second operand has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 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) [2024-01-31 16:07:24,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:24,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 81 [2024-01-31 16:07:24,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:25,382 INFO L124 PetriNetUnfolderBase]: 2020/4126 cut-off events. [2024-01-31 16:07:25,382 INFO L125 PetriNetUnfolderBase]: For 117351/118048 co-relation queries the response was YES. [2024-01-31 16:07:25,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26704 conditions, 4126 events. 2020/4126 cut-off events. For 117351/118048 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 31596 event pairs, 492 based on Foata normal form. 250/4124 useless extension candidates. Maximal degree in co-relation 26573. Up to 1616 conditions per place. [2024-01-31 16:07:25,432 INFO L140 encePairwiseOnDemand]: 76/81 looper letters, 303 selfloop transitions, 86 changer transitions 1/458 dead transitions. [2024-01-31 16:07:25,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 458 transitions, 9171 flow [2024-01-31 16:07:25,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:07:25,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:07:25,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 229 transitions. [2024-01-31 16:07:25,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5654320987654321 [2024-01-31 16:07:25,433 INFO L175 Difference]: Start difference. First operand has 389 places, 501 transitions, 9001 flow. Second operand 5 states and 229 transitions. [2024-01-31 16:07:25,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 458 transitions, 9171 flow [2024-01-31 16:07:25,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 458 transitions, 8191 flow, removed 27 selfloop flow, removed 40 redundant places. [2024-01-31 16:07:25,745 INFO L231 Difference]: Finished difference. Result has 347 places, 444 transitions, 7574 flow [2024-01-31 16:07:25,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=7303, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=7574, PETRI_PLACES=347, PETRI_TRANSITIONS=444} [2024-01-31 16:07:25,746 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 262 predicate places. [2024-01-31 16:07:25,746 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 444 transitions, 7574 flow [2024-01-31 16:07:25,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 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) [2024-01-31 16:07:25,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:25,746 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] [2024-01-31 16:07:25,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-01-31 16:07:25,746 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:07:25,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:25,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1718907664, now seen corresponding path program 1 times [2024-01-31 16:07:25,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:25,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084476523] [2024-01-31 16:07:25,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:25,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:25,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:26,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:26,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:26,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084476523] [2024-01-31 16:07:26,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084476523] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:26,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:26,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:07:26,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132424169] [2024-01-31 16:07:26,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:26,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:07:26,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:26,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:07:26,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:07:26,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:07:26,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 444 transitions, 7574 flow. Second operand has 10 states, 10 states have (on average 24.9) internal successors, (249), 10 states have internal predecessors, (249), 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) [2024-01-31 16:07:26,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:26,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:07:26,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:27,268 INFO L124 PetriNetUnfolderBase]: 3040/5648 cut-off events. [2024-01-31 16:07:27,268 INFO L125 PetriNetUnfolderBase]: For 114220/114857 co-relation queries the response was YES. [2024-01-31 16:07:27,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33538 conditions, 5648 events. 3040/5648 cut-off events. For 114220/114857 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 40064 event pairs, 588 based on Foata normal form. 163/5737 useless extension candidates. Maximal degree in co-relation 33434. Up to 4501 conditions per place. [2024-01-31 16:07:27,327 INFO L140 encePairwiseOnDemand]: 69/81 looper letters, 400 selfloop transitions, 74 changer transitions 0/509 dead transitions. [2024-01-31 16:07:27,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 509 transitions, 8998 flow [2024-01-31 16:07:27,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 16:07:27,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 16:07:27,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 344 transitions. [2024-01-31 16:07:27,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4246913580246914 [2024-01-31 16:07:27,328 INFO L175 Difference]: Start difference. First operand has 347 places, 444 transitions, 7574 flow. Second operand 10 states and 344 transitions. [2024-01-31 16:07:27,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 509 transitions, 8998 flow [2024-01-31 16:07:27,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 509 transitions, 8733 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-01-31 16:07:27,771 INFO L231 Difference]: Finished difference. Result has 348 places, 453 transitions, 7608 flow [2024-01-31 16:07:27,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=7328, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7608, PETRI_PLACES=348, PETRI_TRANSITIONS=453} [2024-01-31 16:07:27,772 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 263 predicate places. [2024-01-31 16:07:27,772 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 453 transitions, 7608 flow [2024-01-31 16:07:27,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.9) internal successors, (249), 10 states have internal predecessors, (249), 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) [2024-01-31 16:07:27,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:27,773 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] [2024-01-31 16:07:27,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-01-31 16:07:27,773 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting P1Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:07:27,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:27,773 INFO L85 PathProgramCache]: Analyzing trace with hash 188338914, now seen corresponding path program 1 times [2024-01-31 16:07:27,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:27,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740145829] [2024-01-31 16:07:27,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:27,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:27,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:28,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:28,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:28,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740145829] [2024-01-31 16:07:28,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740145829] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:28,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:28,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:07:28,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990130258] [2024-01-31 16:07:28,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:28,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:07:28,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:28,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:07:28,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:07:28,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:07:28,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 453 transitions, 7608 flow. Second operand has 10 states, 10 states have (on average 24.9) internal successors, (249), 10 states have internal predecessors, (249), 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) [2024-01-31 16:07:28,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:28,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:07:28,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:29,146 INFO L124 PetriNetUnfolderBase]: 2806/5416 cut-off events. [2024-01-31 16:07:29,146 INFO L125 PetriNetUnfolderBase]: For 100109/100829 co-relation queries the response was YES. [2024-01-31 16:07:29,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31929 conditions, 5416 events. 2806/5416 cut-off events. For 100109/100829 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 39899 event pairs, 545 based on Foata normal form. 94/5419 useless extension candidates. Maximal degree in co-relation 31826. Up to 3729 conditions per place. [2024-01-31 16:07:29,200 INFO L140 encePairwiseOnDemand]: 70/81 looper letters, 391 selfloop transitions, 91 changer transitions 0/521 dead transitions. [2024-01-31 16:07:29,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 521 transitions, 9191 flow [2024-01-31 16:07:29,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:07:29,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:07:29,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 312 transitions. [2024-01-31 16:07:29,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4279835390946502 [2024-01-31 16:07:29,201 INFO L175 Difference]: Start difference. First operand has 348 places, 453 transitions, 7608 flow. Second operand 9 states and 312 transitions. [2024-01-31 16:07:29,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 521 transitions, 9191 flow [2024-01-31 16:07:29,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 521 transitions, 9011 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-01-31 16:07:29,564 INFO L231 Difference]: Finished difference. Result has 350 places, 470 transitions, 7941 flow [2024-01-31 16:07:29,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=7428, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7941, PETRI_PLACES=350, PETRI_TRANSITIONS=470} [2024-01-31 16:07:29,564 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 265 predicate places. [2024-01-31 16:07:29,565 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 470 transitions, 7941 flow [2024-01-31 16:07:29,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.9) internal successors, (249), 10 states have internal predecessors, (249), 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) [2024-01-31 16:07:29,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:29,565 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] [2024-01-31 16:07:29,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-01-31 16:07:29,565 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:07:29,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:29,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1763907015, now seen corresponding path program 1 times [2024-01-31 16:07:29,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:29,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661771285] [2024-01-31 16:07:29,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:29,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:29,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:29,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:29,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:29,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661771285] [2024-01-31 16:07:29,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661771285] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:29,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:29,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:07:29,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840941726] [2024-01-31 16:07:29,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:29,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:07:29,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:29,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:07:29,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:07:29,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 81 [2024-01-31 16:07:29,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 470 transitions, 7941 flow. Second operand has 8 states, 8 states have (on average 36.875) internal successors, (295), 8 states have internal predecessors, (295), 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) [2024-01-31 16:07:29,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:29,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 81 [2024-01-31 16:07:29,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:30,804 INFO L124 PetriNetUnfolderBase]: 2257/4722 cut-off events. [2024-01-31 16:07:30,804 INFO L125 PetriNetUnfolderBase]: For 110422/111172 co-relation queries the response was YES. [2024-01-31 16:07:30,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29223 conditions, 4722 events. 2257/4722 cut-off events. For 110422/111172 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 37222 event pairs, 317 based on Foata normal form. 105/4708 useless extension candidates. Maximal degree in co-relation 29118. Up to 1457 conditions per place. [2024-01-31 16:07:30,852 INFO L140 encePairwiseOnDemand]: 72/81 looper letters, 358 selfloop transitions, 125 changer transitions 2/553 dead transitions. [2024-01-31 16:07:30,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 553 transitions, 9817 flow [2024-01-31 16:07:30,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:07:30,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:07:30,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 387 transitions. [2024-01-31 16:07:30,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5972222222222222 [2024-01-31 16:07:30,853 INFO L175 Difference]: Start difference. First operand has 350 places, 470 transitions, 7941 flow. Second operand 8 states and 387 transitions. [2024-01-31 16:07:30,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 553 transitions, 9817 flow [2024-01-31 16:07:31,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 553 transitions, 9683 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-01-31 16:07:31,257 INFO L231 Difference]: Finished difference. Result has 354 places, 481 transitions, 8225 flow [2024-01-31 16:07:31,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=7813, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8225, PETRI_PLACES=354, PETRI_TRANSITIONS=481} [2024-01-31 16:07:31,258 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 269 predicate places. [2024-01-31 16:07:31,258 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 481 transitions, 8225 flow [2024-01-31 16:07:31,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 36.875) internal successors, (295), 8 states have internal predecessors, (295), 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) [2024-01-31 16:07:31,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:31,259 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] [2024-01-31 16:07:31,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-01-31 16:07:31,259 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:07:31,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:31,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1178762149, now seen corresponding path program 2 times [2024-01-31 16:07:31,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:31,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736175053] [2024-01-31 16:07:31,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:31,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:31,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:31,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:31,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:31,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736175053] [2024-01-31 16:07:31,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736175053] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:31,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:31,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:07:31,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472974559] [2024-01-31 16:07:31,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:31,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:07:31,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:31,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:07:31,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:07:31,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 81 [2024-01-31 16:07:31,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 481 transitions, 8225 flow. Second operand has 8 states, 8 states have (on average 36.875) internal successors, (295), 8 states have internal predecessors, (295), 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) [2024-01-31 16:07:31,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:31,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 81 [2024-01-31 16:07:31,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:32,518 INFO L124 PetriNetUnfolderBase]: 2313/4820 cut-off events. [2024-01-31 16:07:32,518 INFO L125 PetriNetUnfolderBase]: For 115039/115805 co-relation queries the response was YES. [2024-01-31 16:07:32,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30261 conditions, 4820 events. 2313/4820 cut-off events. For 115039/115805 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 37986 event pairs, 331 based on Foata normal form. 113/4814 useless extension candidates. Maximal degree in co-relation 30153. Up to 1477 conditions per place. [2024-01-31 16:07:32,573 INFO L140 encePairwiseOnDemand]: 72/81 looper letters, 363 selfloop transitions, 126 changer transitions 2/559 dead transitions. [2024-01-31 16:07:32,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 559 transitions, 10028 flow [2024-01-31 16:07:32,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:07:32,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:07:32,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 388 transitions. [2024-01-31 16:07:32,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5987654320987654 [2024-01-31 16:07:32,574 INFO L175 Difference]: Start difference. First operand has 354 places, 481 transitions, 8225 flow. Second operand 8 states and 388 transitions. [2024-01-31 16:07:32,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 559 transitions, 10028 flow [2024-01-31 16:07:32,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 559 transitions, 9829 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-01-31 16:07:32,941 INFO L231 Difference]: Finished difference. Result has 360 places, 485 transitions, 8350 flow [2024-01-31 16:07:32,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=8041, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8350, PETRI_PLACES=360, PETRI_TRANSITIONS=485} [2024-01-31 16:07:32,941 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 275 predicate places. [2024-01-31 16:07:32,942 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 485 transitions, 8350 flow [2024-01-31 16:07:32,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 36.875) internal successors, (295), 8 states have internal predecessors, (295), 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) [2024-01-31 16:07:32,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:32,942 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] [2024-01-31 16:07:32,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-01-31 16:07:32,942 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:07:32,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:32,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1303935985, now seen corresponding path program 3 times [2024-01-31 16:07:32,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:32,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435064730] [2024-01-31 16:07:32,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:32,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:32,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:33,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:33,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:33,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435064730] [2024-01-31 16:07:33,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435064730] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:33,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:33,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:07:33,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584007618] [2024-01-31 16:07:33,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:33,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:07:33,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:33,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:07:33,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:07:33,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 81 [2024-01-31 16:07:33,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 485 transitions, 8350 flow. Second operand has 8 states, 8 states have (on average 36.875) internal successors, (295), 8 states have internal predecessors, (295), 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) [2024-01-31 16:07:33,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:33,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 81 [2024-01-31 16:07:33,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:34,148 INFO L124 PetriNetUnfolderBase]: 2285/4774 cut-off events. [2024-01-31 16:07:34,148 INFO L125 PetriNetUnfolderBase]: For 113006/113768 co-relation queries the response was YES. [2024-01-31 16:07:34,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29631 conditions, 4774 events. 2285/4774 cut-off events. For 113006/113768 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 37668 event pairs, 301 based on Foata normal form. 113/4768 useless extension candidates. Maximal degree in co-relation 29521. Up to 1477 conditions per place. [2024-01-31 16:07:34,200 INFO L140 encePairwiseOnDemand]: 72/81 looper letters, 351 selfloop transitions, 132 changer transitions 2/553 dead transitions. [2024-01-31 16:07:34,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 553 transitions, 10050 flow [2024-01-31 16:07:34,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:07:34,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:07:34,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 383 transitions. [2024-01-31 16:07:34,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5910493827160493 [2024-01-31 16:07:34,201 INFO L175 Difference]: Start difference. First operand has 360 places, 485 transitions, 8350 flow. Second operand 8 states and 383 transitions. [2024-01-31 16:07:34,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 553 transitions, 10050 flow [2024-01-31 16:07:34,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 553 transitions, 9813 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-01-31 16:07:34,559 INFO L231 Difference]: Finished difference. Result has 364 places, 485 transitions, 8384 flow [2024-01-31 16:07:34,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=8113, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8384, PETRI_PLACES=364, PETRI_TRANSITIONS=485} [2024-01-31 16:07:34,560 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 279 predicate places. [2024-01-31 16:07:34,560 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 485 transitions, 8384 flow [2024-01-31 16:07:34,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 36.875) internal successors, (295), 8 states have internal predecessors, (295), 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) [2024-01-31 16:07:34,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:34,560 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] [2024-01-31 16:07:34,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-01-31 16:07:34,560 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:07:34,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:34,561 INFO L85 PathProgramCache]: Analyzing trace with hash 254300589, now seen corresponding path program 1 times [2024-01-31 16:07:34,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:34,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163970548] [2024-01-31 16:07:34,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:34,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:34,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:34,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:34,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:34,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163970548] [2024-01-31 16:07:34,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163970548] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:34,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:34,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:07:34,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688494909] [2024-01-31 16:07:34,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:34,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:07:34,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:34,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:07:34,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:07:34,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 81 [2024-01-31 16:07:34,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 485 transitions, 8384 flow. Second operand has 8 states, 8 states have (on average 36.875) internal successors, (295), 8 states have internal predecessors, (295), 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) [2024-01-31 16:07:34,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:34,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 81 [2024-01-31 16:07:34,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:35,853 INFO L124 PetriNetUnfolderBase]: 2281/4766 cut-off events. [2024-01-31 16:07:35,853 INFO L125 PetriNetUnfolderBase]: For 108291/109047 co-relation queries the response was YES. [2024-01-31 16:07:35,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29486 conditions, 4766 events. 2281/4766 cut-off events. For 108291/109047 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 37540 event pairs, 291 based on Foata normal form. 101/4748 useless extension candidates. Maximal degree in co-relation 29375. Up to 1481 conditions per place. [2024-01-31 16:07:35,901 INFO L140 encePairwiseOnDemand]: 72/81 looper letters, 339 selfloop transitions, 140 changer transitions 2/549 dead transitions. [2024-01-31 16:07:35,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 549 transitions, 9977 flow [2024-01-31 16:07:35,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:07:35,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:07:35,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 380 transitions. [2024-01-31 16:07:35,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5864197530864198 [2024-01-31 16:07:35,902 INFO L175 Difference]: Start difference. First operand has 364 places, 485 transitions, 8384 flow. Second operand 8 states and 380 transitions. [2024-01-31 16:07:35,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 549 transitions, 9977 flow [2024-01-31 16:07:36,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 549 transitions, 9705 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-01-31 16:07:36,228 INFO L231 Difference]: Finished difference. Result has 366 places, 486 transitions, 8413 flow [2024-01-31 16:07:36,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=8114, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8413, PETRI_PLACES=366, PETRI_TRANSITIONS=486} [2024-01-31 16:07:36,229 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 281 predicate places. [2024-01-31 16:07:36,229 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 486 transitions, 8413 flow [2024-01-31 16:07:36,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 36.875) internal successors, (295), 8 states have internal predecessors, (295), 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) [2024-01-31 16:07:36,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:36,229 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] [2024-01-31 16:07:36,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-01-31 16:07:36,229 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:07:36,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:36,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1218146581, now seen corresponding path program 4 times [2024-01-31 16:07:36,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:36,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716735240] [2024-01-31 16:07:36,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:36,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:36,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:36,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:36,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:36,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716735240] [2024-01-31 16:07:36,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716735240] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:36,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:36,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:07:36,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676036644] [2024-01-31 16:07:36,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:36,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:07:36,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:36,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:07:36,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:07:36,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 81 [2024-01-31 16:07:36,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 486 transitions, 8413 flow. Second operand has 8 states, 8 states have (on average 36.875) internal successors, (295), 8 states have internal predecessors, (295), 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) [2024-01-31 16:07:36,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:36,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 81 [2024-01-31 16:07:36,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:37,485 INFO L124 PetriNetUnfolderBase]: 2313/4832 cut-off events. [2024-01-31 16:07:37,486 INFO L125 PetriNetUnfolderBase]: For 110021/110769 co-relation queries the response was YES. [2024-01-31 16:07:37,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29827 conditions, 4832 events. 2313/4832 cut-off events. For 110021/110769 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 38081 event pairs, 299 based on Foata normal form. 101/4814 useless extension candidates. Maximal degree in co-relation 29715. Up to 1493 conditions per place. [2024-01-31 16:07:37,543 INFO L140 encePairwiseOnDemand]: 73/81 looper letters, 345 selfloop transitions, 134 changer transitions 2/549 dead transitions. [2024-01-31 16:07:37,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 549 transitions, 10003 flow [2024-01-31 16:07:37,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:07:37,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:07:37,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 340 transitions. [2024-01-31 16:07:37,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.599647266313933 [2024-01-31 16:07:37,544 INFO L175 Difference]: Start difference. First operand has 366 places, 486 transitions, 8413 flow. Second operand 7 states and 340 transitions. [2024-01-31 16:07:37,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 549 transitions, 10003 flow [2024-01-31 16:07:37,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 549 transitions, 9775 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-01-31 16:07:37,900 INFO L231 Difference]: Finished difference. Result has 370 places, 489 transitions, 8537 flow [2024-01-31 16:07:37,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=8187, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8537, PETRI_PLACES=370, PETRI_TRANSITIONS=489} [2024-01-31 16:07:37,900 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 285 predicate places. [2024-01-31 16:07:37,901 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 489 transitions, 8537 flow [2024-01-31 16:07:37,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 36.875) internal successors, (295), 8 states have internal predecessors, (295), 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) [2024-01-31 16:07:37,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:37,901 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] [2024-01-31 16:07:37,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-01-31 16:07:37,901 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:07:37,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:37,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1645663423, now seen corresponding path program 5 times [2024-01-31 16:07:37,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:37,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589555448] [2024-01-31 16:07:37,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:37,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:37,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:38,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:38,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:38,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589555448] [2024-01-31 16:07:38,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589555448] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:38,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:38,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:07:38,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488600020] [2024-01-31 16:07:38,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:38,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:07:38,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:38,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:07:38,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:07:38,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 81 [2024-01-31 16:07:38,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 489 transitions, 8537 flow. Second operand has 8 states, 8 states have (on average 36.875) internal successors, (295), 8 states have internal predecessors, (295), 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) [2024-01-31 16:07:38,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:38,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 81 [2024-01-31 16:07:38,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:39,095 INFO L124 PetriNetUnfolderBase]: 2310/4824 cut-off events. [2024-01-31 16:07:39,096 INFO L125 PetriNetUnfolderBase]: For 109975/110722 co-relation queries the response was YES. [2024-01-31 16:07:39,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29864 conditions, 4824 events. 2310/4824 cut-off events. For 109975/110722 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 37911 event pairs, 266 based on Foata normal form. 101/4806 useless extension candidates. Maximal degree in co-relation 29750. Up to 1498 conditions per place. [2024-01-31 16:07:39,150 INFO L140 encePairwiseOnDemand]: 73/81 looper letters, 306 selfloop transitions, 166 changer transitions 2/542 dead transitions. [2024-01-31 16:07:39,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 542 transitions, 9993 flow [2024-01-31 16:07:39,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:07:39,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:07:39,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 332 transitions. [2024-01-31 16:07:39,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5855379188712522 [2024-01-31 16:07:39,152 INFO L175 Difference]: Start difference. First operand has 370 places, 489 transitions, 8537 flow. Second operand 7 states and 332 transitions. [2024-01-31 16:07:39,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 542 transitions, 9993 flow [2024-01-31 16:07:39,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 542 transitions, 9785 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-01-31 16:07:39,523 INFO L231 Difference]: Finished difference. Result has 374 places, 498 transitions, 8906 flow [2024-01-31 16:07:39,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=8332, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8906, PETRI_PLACES=374, PETRI_TRANSITIONS=498} [2024-01-31 16:07:39,524 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 289 predicate places. [2024-01-31 16:07:39,524 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 498 transitions, 8906 flow [2024-01-31 16:07:39,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 36.875) internal successors, (295), 8 states have internal predecessors, (295), 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) [2024-01-31 16:07:39,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:39,524 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] [2024-01-31 16:07:39,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-01-31 16:07:39,524 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:07:39,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:39,525 INFO L85 PathProgramCache]: Analyzing trace with hash -399048221, now seen corresponding path program 6 times [2024-01-31 16:07:39,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:39,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965832142] [2024-01-31 16:07:39,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:39,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:39,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:39,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:39,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:39,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965832142] [2024-01-31 16:07:39,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965832142] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:39,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:39,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:07:39,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494608524] [2024-01-31 16:07:39,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:39,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:07:39,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:39,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:07:39,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:07:39,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 81 [2024-01-31 16:07:39,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 498 transitions, 8906 flow. Second operand has 8 states, 8 states have (on average 36.875) internal successors, (295), 8 states have internal predecessors, (295), 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) [2024-01-31 16:07:39,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:39,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 81 [2024-01-31 16:07:39,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:40,737 INFO L124 PetriNetUnfolderBase]: 2391/4981 cut-off events. [2024-01-31 16:07:40,737 INFO L125 PetriNetUnfolderBase]: For 123813/124592 co-relation queries the response was YES. [2024-01-31 16:07:40,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31717 conditions, 4981 events. 2391/4981 cut-off events. For 123813/124592 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 39383 event pairs, 333 based on Foata normal form. 116/4986 useless extension candidates. Maximal degree in co-relation 31602. Up to 1518 conditions per place. [2024-01-31 16:07:40,794 INFO L140 encePairwiseOnDemand]: 72/81 looper letters, 332 selfloop transitions, 158 changer transitions 2/560 dead transitions. [2024-01-31 16:07:40,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 560 transitions, 10523 flow [2024-01-31 16:07:40,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:07:40,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:07:40,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 380 transitions. [2024-01-31 16:07:40,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5864197530864198 [2024-01-31 16:07:40,795 INFO L175 Difference]: Start difference. First operand has 374 places, 498 transitions, 8906 flow. Second operand 8 states and 380 transitions. [2024-01-31 16:07:40,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 560 transitions, 10523 flow [2024-01-31 16:07:41,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 560 transitions, 10382 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-31 16:07:41,192 INFO L231 Difference]: Finished difference. Result has 380 places, 503 transitions, 9182 flow [2024-01-31 16:07:41,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=8769, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9182, PETRI_PLACES=380, PETRI_TRANSITIONS=503} [2024-01-31 16:07:41,192 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 295 predicate places. [2024-01-31 16:07:41,192 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 503 transitions, 9182 flow [2024-01-31 16:07:41,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 36.875) internal successors, (295), 8 states have internal predecessors, (295), 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) [2024-01-31 16:07:41,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:41,193 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] [2024-01-31 16:07:41,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-01-31 16:07:41,193 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:07:41,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:41,193 INFO L85 PathProgramCache]: Analyzing trace with hash -7743431, now seen corresponding path program 7 times [2024-01-31 16:07:41,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:41,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852439569] [2024-01-31 16:07:41,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:41,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:41,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:41,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:41,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:41,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852439569] [2024-01-31 16:07:41,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852439569] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:41,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:41,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:07:41,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65120676] [2024-01-31 16:07:41,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:41,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:07:41,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:41,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:07:41,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:07:41,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 81 [2024-01-31 16:07:41,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 503 transitions, 9182 flow. Second operand has 8 states, 8 states have (on average 36.875) internal successors, (295), 8 states have internal predecessors, (295), 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) [2024-01-31 16:07:41,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:41,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 81 [2024-01-31 16:07:41,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:42,550 INFO L124 PetriNetUnfolderBase]: 2447/5089 cut-off events. [2024-01-31 16:07:42,550 INFO L125 PetriNetUnfolderBase]: For 127651/128430 co-relation queries the response was YES. [2024-01-31 16:07:42,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32713 conditions, 5089 events. 2447/5089 cut-off events. For 127651/128430 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 40355 event pairs, 331 based on Foata normal form. 104/5082 useless extension candidates. Maximal degree in co-relation 32596. Up to 1538 conditions per place. [2024-01-31 16:07:42,613 INFO L140 encePairwiseOnDemand]: 72/81 looper letters, 312 selfloop transitions, 178 changer transitions 2/560 dead transitions. [2024-01-31 16:07:42,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 560 transitions, 10738 flow [2024-01-31 16:07:42,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:07:42,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:07:42,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 378 transitions. [2024-01-31 16:07:42,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-01-31 16:07:42,614 INFO L175 Difference]: Start difference. First operand has 380 places, 503 transitions, 9182 flow. Second operand 8 states and 378 transitions. [2024-01-31 16:07:42,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 560 transitions, 10738 flow [2024-01-31 16:07:43,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 560 transitions, 10175 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-01-31 16:07:43,044 INFO L231 Difference]: Finished difference. Result has 381 places, 507 transitions, 9103 flow [2024-01-31 16:07:43,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=8631, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9103, PETRI_PLACES=381, PETRI_TRANSITIONS=507} [2024-01-31 16:07:43,045 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 296 predicate places. [2024-01-31 16:07:43,045 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 507 transitions, 9103 flow [2024-01-31 16:07:43,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 36.875) internal successors, (295), 8 states have internal predecessors, (295), 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) [2024-01-31 16:07:43,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:43,045 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] [2024-01-31 16:07:43,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-01-31 16:07:43,045 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:07:43,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:43,046 INFO L85 PathProgramCache]: Analyzing trace with hash 555849201, now seen corresponding path program 8 times [2024-01-31 16:07:43,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:43,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701918736] [2024-01-31 16:07:43,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:43,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:43,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:43,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:43,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:43,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701918736] [2024-01-31 16:07:43,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701918736] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:43,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:43,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:07:43,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733613372] [2024-01-31 16:07:43,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:43,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:07:43,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:43,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:07:43,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:07:43,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 81 [2024-01-31 16:07:43,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 507 transitions, 9103 flow. Second operand has 8 states, 8 states have (on average 36.875) internal successors, (295), 8 states have internal predecessors, (295), 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) [2024-01-31 16:07:43,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:43,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 81 [2024-01-31 16:07:43,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:44,528 INFO L124 PetriNetUnfolderBase]: 2419/5045 cut-off events. [2024-01-31 16:07:44,529 INFO L125 PetriNetUnfolderBase]: For 122583/123350 co-relation queries the response was YES. [2024-01-31 16:07:44,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31446 conditions, 5045 events. 2419/5045 cut-off events. For 122583/123350 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 40053 event pairs, 301 based on Foata normal form. 116/5046 useless extension candidates. Maximal degree in co-relation 31330. Up to 1538 conditions per place. [2024-01-31 16:07:44,576 INFO L140 encePairwiseOnDemand]: 72/81 looper letters, 356 selfloop transitions, 145 changer transitions 2/571 dead transitions. [2024-01-31 16:07:44,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 571 transitions, 10790 flow [2024-01-31 16:07:44,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:07:44,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:07:44,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 385 transitions. [2024-01-31 16:07:44,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5941358024691358 [2024-01-31 16:07:44,577 INFO L175 Difference]: Start difference. First operand has 381 places, 507 transitions, 9103 flow. Second operand 8 states and 385 transitions. [2024-01-31 16:07:44,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 571 transitions, 10790 flow [2024-01-31 16:07:44,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 571 transitions, 10520 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-01-31 16:07:44,919 INFO L231 Difference]: Finished difference. Result has 386 places, 508 transitions, 9162 flow [2024-01-31 16:07:44,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=8835, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9162, PETRI_PLACES=386, PETRI_TRANSITIONS=508} [2024-01-31 16:07:44,920 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 301 predicate places. [2024-01-31 16:07:44,920 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 508 transitions, 9162 flow [2024-01-31 16:07:44,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 36.875) internal successors, (295), 8 states have internal predecessors, (295), 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) [2024-01-31 16:07:44,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:44,920 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] [2024-01-31 16:07:44,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-01-31 16:07:44,920 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:07:44,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:44,921 INFO L85 PathProgramCache]: Analyzing trace with hash -24388951, now seen corresponding path program 2 times [2024-01-31 16:07:44,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:44,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594626564] [2024-01-31 16:07:44,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:44,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:44,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:45,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:45,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:45,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594626564] [2024-01-31 16:07:45,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594626564] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:45,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:45,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:07:45,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197254121] [2024-01-31 16:07:45,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:45,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:07:45,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:45,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:07:45,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:07:45,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 81 [2024-01-31 16:07:45,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 508 transitions, 9162 flow. Second operand has 8 states, 8 states have (on average 36.875) internal successors, (295), 8 states have internal predecessors, (295), 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) [2024-01-31 16:07:45,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:45,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 81 [2024-01-31 16:07:45,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:46,174 INFO L124 PetriNetUnfolderBase]: 2415/5037 cut-off events. [2024-01-31 16:07:46,175 INFO L125 PetriNetUnfolderBase]: For 114750/115511 co-relation queries the response was YES. [2024-01-31 16:07:46,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31278 conditions, 5037 events. 2415/5037 cut-off events. For 114750/115511 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 39879 event pairs, 299 based on Foata normal form. 104/5026 useless extension candidates. Maximal degree in co-relation 31160. Up to 1542 conditions per place. [2024-01-31 16:07:46,235 INFO L140 encePairwiseOnDemand]: 72/81 looper letters, 347 selfloop transitions, 150 changer transitions 2/567 dead transitions. [2024-01-31 16:07:46,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 567 transitions, 10710 flow [2024-01-31 16:07:46,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:07:46,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:07:46,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 382 transitions. [2024-01-31 16:07:46,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5895061728395061 [2024-01-31 16:07:46,236 INFO L175 Difference]: Start difference. First operand has 386 places, 508 transitions, 9162 flow. Second operand 8 states and 382 transitions. [2024-01-31 16:07:46,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 567 transitions, 10710 flow [2024-01-31 16:07:46,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 567 transitions, 10335 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-01-31 16:07:46,611 INFO L231 Difference]: Finished difference. Result has 387 places, 509 transitions, 9109 flow [2024-01-31 16:07:46,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=8788, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9109, PETRI_PLACES=387, PETRI_TRANSITIONS=509} [2024-01-31 16:07:46,612 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 302 predicate places. [2024-01-31 16:07:46,612 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 509 transitions, 9109 flow [2024-01-31 16:07:46,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 36.875) internal successors, (295), 8 states have internal predecessors, (295), 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) [2024-01-31 16:07:46,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:46,612 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] [2024-01-31 16:07:46,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-01-31 16:07:46,612 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:07:46,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:46,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1576806475, now seen corresponding path program 3 times [2024-01-31 16:07:46,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:46,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007130939] [2024-01-31 16:07:46,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:46,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:46,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:46,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:46,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:46,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007130939] [2024-01-31 16:07:46,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007130939] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:46,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:46,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:07:46,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487498461] [2024-01-31 16:07:46,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:46,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:07:46,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:46,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:07:46,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:07:46,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 81 [2024-01-31 16:07:46,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 509 transitions, 9109 flow. Second operand has 9 states, 9 states have (on average 36.666666666666664) internal successors, (330), 9 states have internal predecessors, (330), 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) [2024-01-31 16:07:46,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:46,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 81 [2024-01-31 16:07:46,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:47,895 INFO L124 PetriNetUnfolderBase]: 2423/5050 cut-off events. [2024-01-31 16:07:47,895 INFO L125 PetriNetUnfolderBase]: For 110228/110979 co-relation queries the response was YES. [2024-01-31 16:07:47,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30733 conditions, 5050 events. 2423/5050 cut-off events. For 110228/110979 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 39759 event pairs, 429 based on Foata normal form. 100/5061 useless extension candidates. Maximal degree in co-relation 30616. Up to 3149 conditions per place. [2024-01-31 16:07:47,947 INFO L140 encePairwiseOnDemand]: 72/81 looper letters, 380 selfloop transitions, 100 changer transitions 0/548 dead transitions. [2024-01-31 16:07:47,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 548 transitions, 10289 flow [2024-01-31 16:07:47,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-31 16:07:47,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-31 16:07:47,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 474 transitions. [2024-01-31 16:07:47,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.531986531986532 [2024-01-31 16:07:47,949 INFO L175 Difference]: Start difference. First operand has 387 places, 509 transitions, 9109 flow. Second operand 11 states and 474 transitions. [2024-01-31 16:07:47,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 548 transitions, 10289 flow [2024-01-31 16:07:48,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 548 transitions, 9773 flow, removed 5 selfloop flow, removed 28 redundant places. [2024-01-31 16:07:48,281 INFO L231 Difference]: Finished difference. Result has 368 places, 509 transitions, 8742 flow [2024-01-31 16:07:48,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=8529, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8742, PETRI_PLACES=368, PETRI_TRANSITIONS=509} [2024-01-31 16:07:48,282 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 283 predicate places. [2024-01-31 16:07:48,282 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 509 transitions, 8742 flow [2024-01-31 16:07:48,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 36.666666666666664) internal successors, (330), 9 states have internal predecessors, (330), 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) [2024-01-31 16:07:48,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:48,282 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] [2024-01-31 16:07:48,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-01-31 16:07:48,282 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting P1Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:07:48,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:48,283 INFO L85 PathProgramCache]: Analyzing trace with hash 349857442, now seen corresponding path program 2 times [2024-01-31 16:07:48,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:48,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848686474] [2024-01-31 16:07:48,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:48,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:48,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:48,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:48,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:48,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848686474] [2024-01-31 16:07:48,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848686474] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:48,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:48,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:07:48,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118374494] [2024-01-31 16:07:48,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:48,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:07:48,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:48,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:07:48,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:07:48,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:07:48,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 509 transitions, 8742 flow. Second operand has 9 states, 9 states have (on average 25.11111111111111) internal successors, (226), 9 states have internal predecessors, (226), 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) [2024-01-31 16:07:48,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:48,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:07:48,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:49,632 INFO L124 PetriNetUnfolderBase]: 3172/6043 cut-off events. [2024-01-31 16:07:49,632 INFO L125 PetriNetUnfolderBase]: For 100182/100974 co-relation queries the response was YES. [2024-01-31 16:07:49,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35047 conditions, 6043 events. 3172/6043 cut-off events. For 100182/100974 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 44618 event pairs, 394 based on Foata normal form. 90/6031 useless extension candidates. Maximal degree in co-relation 34954. Up to 2055 conditions per place. [2024-01-31 16:07:49,689 INFO L140 encePairwiseOnDemand]: 64/81 looper letters, 364 selfloop transitions, 196 changer transitions 2/601 dead transitions. [2024-01-31 16:07:49,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 601 transitions, 10713 flow [2024-01-31 16:07:49,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:07:49,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:07:49,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 315 transitions. [2024-01-31 16:07:49,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2024-01-31 16:07:49,690 INFO L175 Difference]: Start difference. First operand has 368 places, 509 transitions, 8742 flow. Second operand 8 states and 315 transitions. [2024-01-31 16:07:49,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 601 transitions, 10713 flow [2024-01-31 16:07:50,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 601 transitions, 10368 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-01-31 16:07:50,033 INFO L231 Difference]: Finished difference. Result has 369 places, 531 transitions, 9167 flow [2024-01-31 16:07:50,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=8425, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9167, PETRI_PLACES=369, PETRI_TRANSITIONS=531} [2024-01-31 16:07:50,033 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 284 predicate places. [2024-01-31 16:07:50,033 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 531 transitions, 9167 flow [2024-01-31 16:07:50,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 25.11111111111111) internal successors, (226), 9 states have internal predecessors, (226), 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) [2024-01-31 16:07:50,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:50,034 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] [2024-01-31 16:07:50,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-01-31 16:07:50,034 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting P1Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:07:50,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:50,034 INFO L85 PathProgramCache]: Analyzing trace with hash 501365026, now seen corresponding path program 3 times [2024-01-31 16:07:50,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:50,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199075056] [2024-01-31 16:07:50,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:50,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:50,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:50,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:50,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:50,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199075056] [2024-01-31 16:07:50,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199075056] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:50,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:50,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:07:50,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97229218] [2024-01-31 16:07:50,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:50,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:07:50,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:50,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:07:50,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:07:50,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:07:50,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 531 transitions, 9167 flow. Second operand has 9 states, 9 states have (on average 25.11111111111111) internal successors, (226), 9 states have internal predecessors, (226), 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) [2024-01-31 16:07:50,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:50,320 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:07:50,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:51,455 INFO L124 PetriNetUnfolderBase]: 3148/6003 cut-off events. [2024-01-31 16:07:51,455 INFO L125 PetriNetUnfolderBase]: For 106117/106921 co-relation queries the response was YES. [2024-01-31 16:07:51,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36651 conditions, 6003 events. 3148/6003 cut-off events. For 106117/106921 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 44300 event pairs, 378 based on Foata normal form. 82/5983 useless extension candidates. Maximal degree in co-relation 36556. Up to 2047 conditions per place. [2024-01-31 16:07:51,517 INFO L140 encePairwiseOnDemand]: 64/81 looper letters, 376 selfloop transitions, 189 changer transitions 2/606 dead transitions. [2024-01-31 16:07:51,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 606 transitions, 10967 flow [2024-01-31 16:07:51,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:07:51,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:07:51,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 320 transitions. [2024-01-31 16:07:51,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49382716049382713 [2024-01-31 16:07:51,518 INFO L175 Difference]: Start difference. First operand has 369 places, 531 transitions, 9167 flow. Second operand 8 states and 320 transitions. [2024-01-31 16:07:51,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 606 transitions, 10967 flow [2024-01-31 16:07:51,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 606 transitions, 10725 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-01-31 16:07:51,891 INFO L231 Difference]: Finished difference. Result has 372 places, 531 transitions, 9313 flow [2024-01-31 16:07:51,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=8925, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=189, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9313, PETRI_PLACES=372, PETRI_TRANSITIONS=531} [2024-01-31 16:07:51,892 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 287 predicate places. [2024-01-31 16:07:51,892 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 531 transitions, 9313 flow [2024-01-31 16:07:51,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 25.11111111111111) internal successors, (226), 9 states have internal predecessors, (226), 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) [2024-01-31 16:07:51,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:51,892 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] [2024-01-31 16:07:51,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-01-31 16:07:51,892 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:07:51,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:51,893 INFO L85 PathProgramCache]: Analyzing trace with hash 348252238, now seen corresponding path program 2 times [2024-01-31 16:07:51,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:51,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034573104] [2024-01-31 16:07:51,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:51,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:51,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:52,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:52,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:52,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034573104] [2024-01-31 16:07:52,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034573104] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:52,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:52,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:07:52,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301252421] [2024-01-31 16:07:52,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:52,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:07:52,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:52,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:07:52,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:07:52,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:07:52,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 531 transitions, 9313 flow. Second operand has 9 states, 9 states have (on average 25.11111111111111) internal successors, (226), 9 states have internal predecessors, (226), 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) [2024-01-31 16:07:52,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:52,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:07:52,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:53,499 INFO L124 PetriNetUnfolderBase]: 3452/6422 cut-off events. [2024-01-31 16:07:53,499 INFO L125 PetriNetUnfolderBase]: For 129664/130480 co-relation queries the response was YES. [2024-01-31 16:07:53,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40028 conditions, 6422 events. 3452/6422 cut-off events. For 129664/130480 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 46406 event pairs, 517 based on Foata normal form. 187/6519 useless extension candidates. Maximal degree in co-relation 39932. Up to 2502 conditions per place. [2024-01-31 16:07:53,559 INFO L140 encePairwiseOnDemand]: 71/81 looper letters, 388 selfloop transitions, 166 changer transitions 2/597 dead transitions. [2024-01-31 16:07:53,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 597 transitions, 10941 flow [2024-01-31 16:07:53,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:07:53,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:07:53,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 305 transitions. [2024-01-31 16:07:53,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.470679012345679 [2024-01-31 16:07:53,561 INFO L175 Difference]: Start difference. First operand has 372 places, 531 transitions, 9313 flow. Second operand 8 states and 305 transitions. [2024-01-31 16:07:53,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 597 transitions, 10941 flow [2024-01-31 16:07:53,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 597 transitions, 10624 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-01-31 16:07:53,952 INFO L231 Difference]: Finished difference. Result has 374 places, 531 transitions, 9358 flow [2024-01-31 16:07:53,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=8996, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9358, PETRI_PLACES=374, PETRI_TRANSITIONS=531} [2024-01-31 16:07:53,952 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 289 predicate places. [2024-01-31 16:07:53,952 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 531 transitions, 9358 flow [2024-01-31 16:07:53,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 25.11111111111111) internal successors, (226), 9 states have internal predecessors, (226), 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) [2024-01-31 16:07:53,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:53,953 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] [2024-01-31 16:07:53,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-01-31 16:07:53,953 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting P1Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:07:53,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:53,954 INFO L85 PathProgramCache]: Analyzing trace with hash 153629010, now seen corresponding path program 4 times [2024-01-31 16:07:53,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:53,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682898468] [2024-01-31 16:07:53,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:53,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:53,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:54,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:54,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:54,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682898468] [2024-01-31 16:07:54,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682898468] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:54,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:54,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:07:54,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628392244] [2024-01-31 16:07:54,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:54,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:07:54,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:54,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:07:54,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:07:54,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:07:54,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 531 transitions, 9358 flow. Second operand has 10 states, 10 states have (on average 24.9) internal successors, (249), 10 states have internal predecessors, (249), 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) [2024-01-31 16:07:54,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:54,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:07:54,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:55,398 INFO L124 PetriNetUnfolderBase]: 3143/6032 cut-off events. [2024-01-31 16:07:55,398 INFO L125 PetriNetUnfolderBase]: For 113731/114517 co-relation queries the response was YES. [2024-01-31 16:07:55,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36959 conditions, 6032 events. 3143/6032 cut-off events. For 113731/114517 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 44833 event pairs, 617 based on Foata normal form. 62/6001 useless extension candidates. Maximal degree in co-relation 36862. Up to 4992 conditions per place. [2024-01-31 16:07:55,461 INFO L140 encePairwiseOnDemand]: 71/81 looper letters, 465 selfloop transitions, 59 changer transitions 0/563 dead transitions. [2024-01-31 16:07:55,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 563 transitions, 10584 flow [2024-01-31 16:07:55,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 16:07:55,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 16:07:55,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 323 transitions. [2024-01-31 16:07:55,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3987654320987654 [2024-01-31 16:07:55,462 INFO L175 Difference]: Start difference. First operand has 374 places, 531 transitions, 9358 flow. Second operand 10 states and 323 transitions. [2024-01-31 16:07:55,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 563 transitions, 10584 flow [2024-01-31 16:07:55,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 563 transitions, 10279 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-31 16:07:55,870 INFO L231 Difference]: Finished difference. Result has 378 places, 533 transitions, 9208 flow [2024-01-31 16:07:55,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=9057, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9208, PETRI_PLACES=378, PETRI_TRANSITIONS=533} [2024-01-31 16:07:55,870 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 293 predicate places. [2024-01-31 16:07:55,870 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 533 transitions, 9208 flow [2024-01-31 16:07:55,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.9) internal successors, (249), 10 states have internal predecessors, (249), 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) [2024-01-31 16:07:55,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:55,871 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] [2024-01-31 16:07:55,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-01-31 16:07:55,871 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting P1Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:07:55,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:55,871 INFO L85 PathProgramCache]: Analyzing trace with hash 288277508, now seen corresponding path program 5 times [2024-01-31 16:07:55,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:55,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605506880] [2024-01-31 16:07:55,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:55,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:55,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:56,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:56,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:56,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605506880] [2024-01-31 16:07:56,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605506880] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:56,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:56,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:07:56,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102415611] [2024-01-31 16:07:56,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:56,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:07:56,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:56,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:07:56,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:07:56,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:07:56,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 533 transitions, 9208 flow. Second operand has 10 states, 10 states have (on average 24.9) internal successors, (249), 10 states have internal predecessors, (249), 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) [2024-01-31 16:07:56,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:56,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:07:56,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:57,396 INFO L124 PetriNetUnfolderBase]: 3194/6116 cut-off events. [2024-01-31 16:07:57,396 INFO L125 PetriNetUnfolderBase]: For 110467/111253 co-relation queries the response was YES. [2024-01-31 16:07:57,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36663 conditions, 6116 events. 3194/6116 cut-off events. For 110467/111253 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 45435 event pairs, 622 based on Foata normal form. 62/6085 useless extension candidates. Maximal degree in co-relation 36565. Up to 5076 conditions per place. [2024-01-31 16:07:57,454 INFO L140 encePairwiseOnDemand]: 71/81 looper letters, 467 selfloop transitions, 61 changer transitions 0/567 dead transitions. [2024-01-31 16:07:57,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 567 transitions, 10443 flow [2024-01-31 16:07:57,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 16:07:57,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 16:07:57,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 323 transitions. [2024-01-31 16:07:57,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3987654320987654 [2024-01-31 16:07:57,455 INFO L175 Difference]: Start difference. First operand has 378 places, 533 transitions, 9208 flow. Second operand 10 states and 323 transitions. [2024-01-31 16:07:57,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 567 transitions, 10443 flow [2024-01-31 16:07:57,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 567 transitions, 10364 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-01-31 16:07:57,835 INFO L231 Difference]: Finished difference. Result has 383 places, 535 transitions, 9288 flow [2024-01-31 16:07:57,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=9129, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9288, PETRI_PLACES=383, PETRI_TRANSITIONS=535} [2024-01-31 16:07:57,835 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 298 predicate places. [2024-01-31 16:07:57,835 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 535 transitions, 9288 flow [2024-01-31 16:07:57,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.9) internal successors, (249), 10 states have internal predecessors, (249), 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) [2024-01-31 16:07:57,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:57,835 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] [2024-01-31 16:07:57,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-01-31 16:07:57,836 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting P1Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:07:57,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:57,836 INFO L85 PathProgramCache]: Analyzing trace with hash 857106538, now seen corresponding path program 6 times [2024-01-31 16:07:57,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:57,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171775114] [2024-01-31 16:07:57,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:57,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:57,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:58,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:58,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:58,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171775114] [2024-01-31 16:07:58,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171775114] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:58,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:58,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:07:58,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907924262] [2024-01-31 16:07:58,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:58,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:07:58,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:58,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:07:58,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:07:58,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:07:58,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 535 transitions, 9288 flow. Second operand has 10 states, 10 states have (on average 24.9) internal successors, (249), 10 states have internal predecessors, (249), 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) [2024-01-31 16:07:58,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:58,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:07:58,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:59,340 INFO L124 PetriNetUnfolderBase]: 3182/6096 cut-off events. [2024-01-31 16:07:59,341 INFO L125 PetriNetUnfolderBase]: For 111982/112768 co-relation queries the response was YES. [2024-01-31 16:07:59,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36634 conditions, 6096 events. 3182/6096 cut-off events. For 111982/112768 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 45267 event pairs, 616 based on Foata normal form. 62/6065 useless extension candidates. Maximal degree in co-relation 36535. Up to 4892 conditions per place. [2024-01-31 16:07:59,398 INFO L140 encePairwiseOnDemand]: 71/81 looper letters, 458 selfloop transitions, 71 changer transitions 0/568 dead transitions. [2024-01-31 16:07:59,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 568 transitions, 10486 flow [2024-01-31 16:07:59,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 16:07:59,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 16:07:59,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 324 transitions. [2024-01-31 16:07:59,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-01-31 16:07:59,399 INFO L175 Difference]: Start difference. First operand has 383 places, 535 transitions, 9288 flow. Second operand 10 states and 324 transitions. [2024-01-31 16:07:59,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 568 transitions, 10486 flow [2024-01-31 16:07:59,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 568 transitions, 10383 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-01-31 16:07:59,789 INFO L231 Difference]: Finished difference. Result has 387 places, 535 transitions, 9340 flow [2024-01-31 16:07:59,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=9185, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=535, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9340, PETRI_PLACES=387, PETRI_TRANSITIONS=535} [2024-01-31 16:07:59,789 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 302 predicate places. [2024-01-31 16:07:59,789 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 535 transitions, 9340 flow [2024-01-31 16:07:59,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.9) internal successors, (249), 10 states have internal predecessors, (249), 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) [2024-01-31 16:07:59,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:59,789 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] [2024-01-31 16:07:59,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-01-31 16:07:59,790 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting P1Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:07:59,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:59,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1859263912, now seen corresponding path program 7 times [2024-01-31 16:07:59,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:59,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59172291] [2024-01-31 16:07:59,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:59,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:59,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:08:00,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:08:00,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:08:00,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59172291] [2024-01-31 16:08:00,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59172291] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:08:00,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:08:00,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:08:00,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102060871] [2024-01-31 16:08:00,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:08:00,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:08:00,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:08:00,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:08:00,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:08:00,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:08:00,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 535 transitions, 9340 flow. Second operand has 9 states, 9 states have (on average 25.11111111111111) internal successors, (226), 9 states have internal predecessors, (226), 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) [2024-01-31 16:08:00,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:08:00,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:08:00,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:08:01,539 INFO L124 PetriNetUnfolderBase]: 3128/5998 cut-off events. [2024-01-31 16:08:01,539 INFO L125 PetriNetUnfolderBase]: For 113305/114132 co-relation queries the response was YES. [2024-01-31 16:08:01,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36230 conditions, 5998 events. 3128/5998 cut-off events. For 113305/114132 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 44743 event pairs, 437 based on Foata normal form. 77/5989 useless extension candidates. Maximal degree in co-relation 36130. Up to 2030 conditions per place. [2024-01-31 16:08:01,585 INFO L140 encePairwiseOnDemand]: 71/81 looper letters, 385 selfloop transitions, 168 changer transitions 2/594 dead transitions. [2024-01-31 16:08:01,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 594 transitions, 10976 flow [2024-01-31 16:08:01,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:08:01,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:08:01,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 300 transitions. [2024-01-31 16:08:01,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-01-31 16:08:01,586 INFO L175 Difference]: Start difference. First operand has 387 places, 535 transitions, 9340 flow. Second operand 8 states and 300 transitions. [2024-01-31 16:08:01,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 594 transitions, 10976 flow [2024-01-31 16:08:01,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 594 transitions, 10825 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-01-31 16:08:01,899 INFO L231 Difference]: Finished difference. Result has 387 places, 535 transitions, 9557 flow [2024-01-31 16:08:01,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=9197, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=535, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9557, PETRI_PLACES=387, PETRI_TRANSITIONS=535} [2024-01-31 16:08:01,899 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 302 predicate places. [2024-01-31 16:08:01,899 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 535 transitions, 9557 flow [2024-01-31 16:08:01,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 25.11111111111111) internal successors, (226), 9 states have internal predecessors, (226), 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) [2024-01-31 16:08:01,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:08:01,900 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] [2024-01-31 16:08:01,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-01-31 16:08:01,900 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting P1Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:08:01,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:08:01,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1877646292, now seen corresponding path program 8 times [2024-01-31 16:08:01,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:08:01,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328110996] [2024-01-31 16:08:01,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:08:01,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:08:01,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:08:02,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:08:02,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:08:02,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328110996] [2024-01-31 16:08:02,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328110996] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:08:02,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:08:02,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:08:02,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135495524] [2024-01-31 16:08:02,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:08:02,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:08:02,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:08:02,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:08:02,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:08:02,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:08:02,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 535 transitions, 9557 flow. Second operand has 9 states, 9 states have (on average 25.11111111111111) internal successors, (226), 9 states have internal predecessors, (226), 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) [2024-01-31 16:08:02,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:08:02,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:08:02,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:08:03,417 INFO L124 PetriNetUnfolderBase]: 3116/5978 cut-off events. [2024-01-31 16:08:03,417 INFO L125 PetriNetUnfolderBase]: For 118115/118930 co-relation queries the response was YES. [2024-01-31 16:08:03,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36906 conditions, 5978 events. 3116/5978 cut-off events. For 118115/118930 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 44620 event pairs, 461 based on Foata normal form. 57/5940 useless extension candidates. Maximal degree in co-relation 36805. Up to 2026 conditions per place. [2024-01-31 16:08:03,480 INFO L140 encePairwiseOnDemand]: 71/81 looper letters, 368 selfloop transitions, 182 changer transitions 2/591 dead transitions. [2024-01-31 16:08:03,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 591 transitions, 11119 flow [2024-01-31 16:08:03,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:08:03,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:08:03,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 298 transitions. [2024-01-31 16:08:03,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45987654320987653 [2024-01-31 16:08:03,481 INFO L175 Difference]: Start difference. First operand has 387 places, 535 transitions, 9557 flow. Second operand 8 states and 298 transitions. [2024-01-31 16:08:03,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 591 transitions, 11119 flow [2024-01-31 16:08:03,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 591 transitions, 10766 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-01-31 16:08:03,849 INFO L231 Difference]: Finished difference. Result has 386 places, 535 transitions, 9576 flow [2024-01-31 16:08:03,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=9204, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=535, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9576, PETRI_PLACES=386, PETRI_TRANSITIONS=535} [2024-01-31 16:08:03,849 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 301 predicate places. [2024-01-31 16:08:03,849 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 535 transitions, 9576 flow [2024-01-31 16:08:03,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 25.11111111111111) internal successors, (226), 9 states have internal predecessors, (226), 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) [2024-01-31 16:08:03,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:08:03,850 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] [2024-01-31 16:08:03,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-01-31 16:08:03,850 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:08:03,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:08:03,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1226855940, now seen corresponding path program 3 times [2024-01-31 16:08:03,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:08:03,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282631999] [2024-01-31 16:08:03,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:08:03,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:08:03,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:08:04,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:08:04,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:08:04,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282631999] [2024-01-31 16:08:04,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282631999] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:08:04,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:08:04,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:08:04,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066648140] [2024-01-31 16:08:04,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:08:04,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:08:04,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:08:04,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:08:04,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:08:04,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:08:04,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 535 transitions, 9576 flow. Second operand has 9 states, 9 states have (on average 25.11111111111111) internal successors, (226), 9 states have internal predecessors, (226), 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) [2024-01-31 16:08:04,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:08:04,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:08:04,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:08:05,524 INFO L124 PetriNetUnfolderBase]: 3796/7021 cut-off events. [2024-01-31 16:08:05,524 INFO L125 PetriNetUnfolderBase]: For 146523/147425 co-relation queries the response was YES. [2024-01-31 16:08:05,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43295 conditions, 7021 events. 3796/7021 cut-off events. For 146523/147425 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 51131 event pairs, 598 based on Foata normal form. 201/7128 useless extension candidates. Maximal degree in co-relation 43193. Up to 2447 conditions per place. [2024-01-31 16:08:05,744 INFO L140 encePairwiseOnDemand]: 71/81 looper letters, 436 selfloop transitions, 174 changer transitions 2/653 dead transitions. [2024-01-31 16:08:05,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 653 transitions, 12028 flow [2024-01-31 16:08:05,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:08:05,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:08:05,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 313 transitions. [2024-01-31 16:08:05,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48302469135802467 [2024-01-31 16:08:05,745 INFO L175 Difference]: Start difference. First operand has 386 places, 535 transitions, 9576 flow. Second operand 8 states and 313 transitions. [2024-01-31 16:08:05,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 653 transitions, 12028 flow [2024-01-31 16:08:06,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 653 transitions, 11691 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-31 16:08:06,143 INFO L231 Difference]: Finished difference. Result has 390 places, 562 transitions, 10067 flow [2024-01-31 16:08:06,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=9284, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=535, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10067, PETRI_PLACES=390, PETRI_TRANSITIONS=562} [2024-01-31 16:08:06,144 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 305 predicate places. [2024-01-31 16:08:06,144 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 562 transitions, 10067 flow [2024-01-31 16:08:06,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 25.11111111111111) internal successors, (226), 9 states have internal predecessors, (226), 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) [2024-01-31 16:08:06,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:08:06,144 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] [2024-01-31 16:08:06,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-01-31 16:08:06,144 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:08:06,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:08:06,145 INFO L85 PathProgramCache]: Analyzing trace with hash -54187158, now seen corresponding path program 4 times [2024-01-31 16:08:06,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:08:06,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864627588] [2024-01-31 16:08:06,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:08:06,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:08:06,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:08:06,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:08:06,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:08:06,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864627588] [2024-01-31 16:08:06,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864627588] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:08:06,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:08:06,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:08:06,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290077311] [2024-01-31 16:08:06,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:08:06,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:08:06,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:08:06,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:08:06,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:08:06,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:08:06,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 562 transitions, 10067 flow. Second operand has 10 states, 10 states have (on average 24.9) internal successors, (249), 10 states have internal predecessors, (249), 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) [2024-01-31 16:08:06,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:08:06,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:08:06,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:08:07,911 INFO L124 PetriNetUnfolderBase]: 3774/6990 cut-off events. [2024-01-31 16:08:07,911 INFO L125 PetriNetUnfolderBase]: For 152304/153208 co-relation queries the response was YES. [2024-01-31 16:08:07,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43340 conditions, 6990 events. 3774/6990 cut-off events. For 152304/153208 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 50962 event pairs, 841 based on Foata normal form. 193/7089 useless extension candidates. Maximal degree in co-relation 43235. Up to 5682 conditions per place. [2024-01-31 16:08:07,990 INFO L140 encePairwiseOnDemand]: 71/81 looper letters, 498 selfloop transitions, 77 changer transitions 0/616 dead transitions. [2024-01-31 16:08:07,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 616 transitions, 11645 flow [2024-01-31 16:08:07,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:08:07,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:08:07,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 313 transitions. [2024-01-31 16:08:07,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42935528120713307 [2024-01-31 16:08:07,991 INFO L175 Difference]: Start difference. First operand has 390 places, 562 transitions, 10067 flow. Second operand 9 states and 313 transitions. [2024-01-31 16:08:07,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 616 transitions, 11645 flow [2024-01-31 16:08:08,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 616 transitions, 11434 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-01-31 16:08:08,476 INFO L231 Difference]: Finished difference. Result has 397 places, 563 transitions, 10069 flow [2024-01-31 16:08:08,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=9856, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=562, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10069, PETRI_PLACES=397, PETRI_TRANSITIONS=563} [2024-01-31 16:08:08,476 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 312 predicate places. [2024-01-31 16:08:08,476 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 563 transitions, 10069 flow [2024-01-31 16:08:08,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.9) internal successors, (249), 10 states have internal predecessors, (249), 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) [2024-01-31 16:08:08,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:08:08,476 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] [2024-01-31 16:08:08,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-01-31 16:08:08,477 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:08:08,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:08:08,477 INFO L85 PathProgramCache]: Analyzing trace with hash -901201886, now seen corresponding path program 5 times [2024-01-31 16:08:08,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:08:08,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738534437] [2024-01-31 16:08:08,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:08:08,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:08:08,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:08:08,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:08:08,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:08:08,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738534437] [2024-01-31 16:08:08,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738534437] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:08:08,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:08:08,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:08:08,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993064028] [2024-01-31 16:08:08,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:08:08,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:08:08,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:08:08,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:08:08,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:08:08,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:08:08,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 563 transitions, 10069 flow. Second operand has 10 states, 10 states have (on average 24.9) internal successors, (249), 10 states have internal predecessors, (249), 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) [2024-01-31 16:08:08,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:08:08,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:08:08,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:08:10,447 INFO L124 PetriNetUnfolderBase]: 3761/6963 cut-off events. [2024-01-31 16:08:10,447 INFO L125 PetriNetUnfolderBase]: For 154901/155811 co-relation queries the response was YES. [2024-01-31 16:08:10,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42739 conditions, 6963 events. 3761/6963 cut-off events. For 154901/155811 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 50753 event pairs, 851 based on Foata normal form. 183/7051 useless extension candidates. Maximal degree in co-relation 42632. Up to 5673 conditions per place. [2024-01-31 16:08:10,510 INFO L140 encePairwiseOnDemand]: 71/81 looper letters, 504 selfloop transitions, 77 changer transitions 0/622 dead transitions. [2024-01-31 16:08:10,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 622 transitions, 11640 flow [2024-01-31 16:08:10,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-31 16:08:10,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-31 16:08:10,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 371 transitions. [2024-01-31 16:08:10,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4163860830527497 [2024-01-31 16:08:10,511 INFO L175 Difference]: Start difference. First operand has 397 places, 563 transitions, 10069 flow. Second operand 11 states and 371 transitions. [2024-01-31 16:08:10,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 622 transitions, 11640 flow [2024-01-31 16:08:10,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 622 transitions, 11498 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-01-31 16:08:10,948 INFO L231 Difference]: Finished difference. Result has 401 places, 563 transitions, 10092 flow [2024-01-31 16:08:10,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=9927, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=486, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10092, PETRI_PLACES=401, PETRI_TRANSITIONS=563} [2024-01-31 16:08:10,948 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 316 predicate places. [2024-01-31 16:08:10,949 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 563 transitions, 10092 flow [2024-01-31 16:08:10,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.9) internal successors, (249), 10 states have internal predecessors, (249), 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) [2024-01-31 16:08:10,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:08:10,949 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] [2024-01-31 16:08:10,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-01-31 16:08:10,949 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:08:10,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:08:10,950 INFO L85 PathProgramCache]: Analyzing trace with hash 520029256, now seen corresponding path program 6 times [2024-01-31 16:08:10,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:08:10,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523543894] [2024-01-31 16:08:10,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:08:10,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:08:10,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:08:11,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:08:11,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:08:11,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523543894] [2024-01-31 16:08:11,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523543894] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:08:11,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:08:11,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:08:11,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754997817] [2024-01-31 16:08:11,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:08:11,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-31 16:08:11,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:08:11,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-31 16:08:11,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-31 16:08:11,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:08:11,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 563 transitions, 10092 flow. Second operand has 9 states, 9 states have (on average 25.11111111111111) internal successors, (226), 9 states have internal predecessors, (226), 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) [2024-01-31 16:08:11,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:08:11,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:08:11,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:08:12,707 INFO L124 PetriNetUnfolderBase]: 3795/7020 cut-off events. [2024-01-31 16:08:12,707 INFO L125 PetriNetUnfolderBase]: For 161231/162161 co-relation queries the response was YES. [2024-01-31 16:08:12,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43153 conditions, 7020 events. 3795/7020 cut-off events. For 161231/162161 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 51310 event pairs, 477 based on Foata normal form. 200/7135 useless extension candidates. Maximal degree in co-relation 43046. Up to 2448 conditions per place. [2024-01-31 16:08:12,786 INFO L140 encePairwiseOnDemand]: 63/81 looper letters, 379 selfloop transitions, 231 changer transitions 2/653 dead transitions. [2024-01-31 16:08:12,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 653 transitions, 12137 flow [2024-01-31 16:08:12,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:08:12,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:08:12,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 314 transitions. [2024-01-31 16:08:12,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4845679012345679 [2024-01-31 16:08:12,787 INFO L175 Difference]: Start difference. First operand has 401 places, 563 transitions, 10092 flow. Second operand 8 states and 314 transitions. [2024-01-31 16:08:12,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 653 transitions, 12137 flow [2024-01-31 16:08:13,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 653 transitions, 12003 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-01-31 16:08:13,283 INFO L231 Difference]: Finished difference. Result has 403 places, 586 transitions, 10783 flow [2024-01-31 16:08:13,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=9958, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=208, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10783, PETRI_PLACES=403, PETRI_TRANSITIONS=586} [2024-01-31 16:08:13,284 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 318 predicate places. [2024-01-31 16:08:13,284 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 586 transitions, 10783 flow [2024-01-31 16:08:13,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 25.11111111111111) internal successors, (226), 9 states have internal predecessors, (226), 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) [2024-01-31 16:08:13,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:08:13,284 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] [2024-01-31 16:08:13,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-01-31 16:08:13,285 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:08:13,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:08:13,285 INFO L85 PathProgramCache]: Analyzing trace with hash 2034689096, now seen corresponding path program 7 times [2024-01-31 16:08:13,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:08:13,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859827389] [2024-01-31 16:08:13,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:08:13,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:08:13,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:08:13,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:08:13,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:08:13,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859827389] [2024-01-31 16:08:13,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859827389] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:08:13,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:08:13,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:08:13,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417006571] [2024-01-31 16:08:13,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:08:13,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:08:13,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:08:13,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:08:13,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:08:13,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:08:13,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 586 transitions, 10783 flow. Second operand has 10 states, 10 states have (on average 24.9) internal successors, (249), 10 states have internal predecessors, (249), 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) [2024-01-31 16:08:13,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:08:13,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:08:13,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:08:15,287 INFO L124 PetriNetUnfolderBase]: 3949/7319 cut-off events. [2024-01-31 16:08:15,287 INFO L125 PetriNetUnfolderBase]: For 178944/179874 co-relation queries the response was YES. [2024-01-31 16:08:15,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47316 conditions, 7319 events. 3949/7319 cut-off events. For 178944/179874 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 53956 event pairs, 836 based on Foata normal form. 200/7438 useless extension candidates. Maximal degree in co-relation 47207. Up to 5987 conditions per place. [2024-01-31 16:08:15,361 INFO L140 encePairwiseOnDemand]: 71/81 looper letters, 528 selfloop transitions, 78 changer transitions 0/647 dead transitions. [2024-01-31 16:08:15,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 647 transitions, 12597 flow [2024-01-31 16:08:15,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:08:15,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:08:15,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 311 transitions. [2024-01-31 16:08:15,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42661179698216734 [2024-01-31 16:08:15,362 INFO L175 Difference]: Start difference. First operand has 403 places, 586 transitions, 10783 flow. Second operand 9 states and 311 transitions. [2024-01-31 16:08:15,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 647 transitions, 12597 flow [2024-01-31 16:08:15,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 647 transitions, 12191 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-01-31 16:08:15,867 INFO L231 Difference]: Finished difference. Result has 406 places, 597 transitions, 10783 flow [2024-01-31 16:08:15,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=10401, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=586, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=508, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10783, PETRI_PLACES=406, PETRI_TRANSITIONS=597} [2024-01-31 16:08:15,867 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 321 predicate places. [2024-01-31 16:08:15,868 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 597 transitions, 10783 flow [2024-01-31 16:08:15,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.9) internal successors, (249), 10 states have internal predecessors, (249), 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) [2024-01-31 16:08:15,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:08:15,868 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] [2024-01-31 16:08:15,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-01-31 16:08:15,868 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:08:15,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:08:15,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1262660018, now seen corresponding path program 8 times [2024-01-31 16:08:15,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:08:15,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567881310] [2024-01-31 16:08:15,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:08:15,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:08:15,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:08:16,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:08:16,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:08:16,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567881310] [2024-01-31 16:08:16,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567881310] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:08:16,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:08:16,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:08:16,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267579230] [2024-01-31 16:08:16,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:08:16,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:08:16,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:08:16,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:08:16,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:08:16,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:08:16,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 597 transitions, 10783 flow. Second operand has 10 states, 10 states have (on average 24.9) internal successors, (249), 10 states have internal predecessors, (249), 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) [2024-01-31 16:08:16,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:08:16,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:08:16,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:08:17,731 INFO L124 PetriNetUnfolderBase]: 3946/7300 cut-off events. [2024-01-31 16:08:17,732 INFO L125 PetriNetUnfolderBase]: For 173342/174267 co-relation queries the response was YES. [2024-01-31 16:08:17,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46334 conditions, 7300 events. 3946/7300 cut-off events. For 173342/174267 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 53522 event pairs, 750 based on Foata normal form. 190/7406 useless extension candidates. Maximal degree in co-relation 46224. Up to 4844 conditions per place. [2024-01-31 16:08:17,810 INFO L140 encePairwiseOnDemand]: 71/81 looper letters, 469 selfloop transitions, 127 changer transitions 0/637 dead transitions. [2024-01-31 16:08:17,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 637 transitions, 12286 flow [2024-01-31 16:08:17,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:08:17,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:08:17,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 308 transitions. [2024-01-31 16:08:17,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4224965706447188 [2024-01-31 16:08:17,811 INFO L175 Difference]: Start difference. First operand has 406 places, 597 transitions, 10783 flow. Second operand 9 states and 308 transitions. [2024-01-31 16:08:17,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 637 transitions, 12286 flow [2024-01-31 16:08:18,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 637 transitions, 12162 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-01-31 16:08:18,330 INFO L231 Difference]: Finished difference. Result has 410 places, 597 transitions, 10962 flow [2024-01-31 16:08:18,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=10659, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=597, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10962, PETRI_PLACES=410, PETRI_TRANSITIONS=597} [2024-01-31 16:08:18,330 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 325 predicate places. [2024-01-31 16:08:18,331 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 597 transitions, 10962 flow [2024-01-31 16:08:18,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.9) internal successors, (249), 10 states have internal predecessors, (249), 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) [2024-01-31 16:08:18,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:08:18,331 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] [2024-01-31 16:08:18,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-01-31 16:08:18,331 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:08:18,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:08:18,331 INFO L85 PathProgramCache]: Analyzing trace with hash -425272516, now seen corresponding path program 9 times [2024-01-31 16:08:18,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:08:18,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427130752] [2024-01-31 16:08:18,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:08:18,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:08:18,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:08:18,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:08:18,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:08:18,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427130752] [2024-01-31 16:08:18,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427130752] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:08:18,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:08:18,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:08:18,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248790766] [2024-01-31 16:08:18,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:08:18,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:08:18,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:08:18,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:08:18,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:08:18,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:08:18,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 597 transitions, 10962 flow. Second operand has 10 states, 10 states have (on average 24.9) internal successors, (249), 10 states have internal predecessors, (249), 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) [2024-01-31 16:08:18,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:08:18,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:08:18,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:08:20,226 INFO L124 PetriNetUnfolderBase]: 3914/7258 cut-off events. [2024-01-31 16:08:20,226 INFO L125 PetriNetUnfolderBase]: For 180799/181730 co-relation queries the response was YES. [2024-01-31 16:08:20,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46541 conditions, 7258 events. 3914/7258 cut-off events. For 180799/181730 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 53440 event pairs, 820 based on Foata normal form. 204/7381 useless extension candidates. Maximal degree in co-relation 46430. Up to 5952 conditions per place. [2024-01-31 16:08:20,304 INFO L140 encePairwiseOnDemand]: 71/81 looper letters, 534 selfloop transitions, 78 changer transitions 0/653 dead transitions. [2024-01-31 16:08:20,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 653 transitions, 12598 flow [2024-01-31 16:08:20,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-31 16:08:20,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-31 16:08:20,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 369 transitions. [2024-01-31 16:08:20,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41414141414141414 [2024-01-31 16:08:20,305 INFO L175 Difference]: Start difference. First operand has 410 places, 597 transitions, 10962 flow. Second operand 11 states and 369 transitions. [2024-01-31 16:08:20,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 653 transitions, 12598 flow [2024-01-31 16:08:20,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 653 transitions, 12297 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-01-31 16:08:20,815 INFO L231 Difference]: Finished difference. Result has 411 places, 597 transitions, 10828 flow [2024-01-31 16:08:20,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=10661, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=597, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=519, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10828, PETRI_PLACES=411, PETRI_TRANSITIONS=597} [2024-01-31 16:08:20,816 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 326 predicate places. [2024-01-31 16:08:20,816 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 597 transitions, 10828 flow [2024-01-31 16:08:20,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.9) internal successors, (249), 10 states have internal predecessors, (249), 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) [2024-01-31 16:08:20,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:08:20,816 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] [2024-01-31 16:08:20,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-01-31 16:08:20,816 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:08:20,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:08:20,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1197301594, now seen corresponding path program 10 times [2024-01-31 16:08:20,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:08:20,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76735387] [2024-01-31 16:08:20,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:08:20,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:08:20,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:08:21,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:08:21,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:08:21,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76735387] [2024-01-31 16:08:21,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76735387] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:08:21,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:08:21,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:08:21,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903316017] [2024-01-31 16:08:21,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:08:21,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:08:21,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:08:21,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:08:21,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:08:21,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:08:21,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 597 transitions, 10828 flow. Second operand has 10 states, 10 states have (on average 24.9) internal successors, (249), 10 states have internal predecessors, (249), 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) [2024-01-31 16:08:21,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:08:21,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:08:21,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:08:22,668 INFO L124 PetriNetUnfolderBase]: 3972/7350 cut-off events. [2024-01-31 16:08:22,668 INFO L125 PetriNetUnfolderBase]: For 176923/177848 co-relation queries the response was YES. [2024-01-31 16:08:22,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46610 conditions, 7350 events. 3972/7350 cut-off events. For 176923/177848 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 53973 event pairs, 758 based on Foata normal form. 186/7452 useless extension candidates. Maximal degree in co-relation 46500. Up to 4856 conditions per place. [2024-01-31 16:08:22,746 INFO L140 encePairwiseOnDemand]: 71/81 looper letters, 479 selfloop transitions, 133 changer transitions 0/653 dead transitions. [2024-01-31 16:08:22,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 653 transitions, 12523 flow [2024-01-31 16:08:22,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-31 16:08:22,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-31 16:08:22,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 370 transitions. [2024-01-31 16:08:22,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4152637485970819 [2024-01-31 16:08:22,747 INFO L175 Difference]: Start difference. First operand has 411 places, 597 transitions, 10828 flow. Second operand 11 states and 370 transitions. [2024-01-31 16:08:22,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 653 transitions, 12523 flow [2024-01-31 16:08:23,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 653 transitions, 12402 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-31 16:08:23,266 INFO L231 Difference]: Finished difference. Result has 417 places, 602 transitions, 11132 flow [2024-01-31 16:08:23,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=10707, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=597, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11132, PETRI_PLACES=417, PETRI_TRANSITIONS=602} [2024-01-31 16:08:23,266 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 332 predicate places. [2024-01-31 16:08:23,266 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 602 transitions, 11132 flow [2024-01-31 16:08:23,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.9) internal successors, (249), 10 states have internal predecessors, (249), 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) [2024-01-31 16:08:23,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:08:23,267 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] [2024-01-31 16:08:23,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-01-31 16:08:23,267 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:08:23,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:08:23,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1605902860, now seen corresponding path program 11 times [2024-01-31 16:08:23,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:08:23,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473319504] [2024-01-31 16:08:23,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:08:23,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:08:23,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:08:23,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:08:23,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:08:23,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473319504] [2024-01-31 16:08:23,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473319504] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:08:23,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:08:23,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-31 16:08:23,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677505365] [2024-01-31 16:08:23,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:08:23,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:08:23,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:08:23,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:08:23,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:08:23,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:08:23,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 602 transitions, 11132 flow. Second operand has 10 states, 10 states have (on average 24.9) internal successors, (249), 10 states have internal predecessors, (249), 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) [2024-01-31 16:08:23,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:08:23,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:08:23,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:08:25,251 INFO L124 PetriNetUnfolderBase]: 4010/7412 cut-off events. [2024-01-31 16:08:25,251 INFO L125 PetriNetUnfolderBase]: For 186040/186965 co-relation queries the response was YES. [2024-01-31 16:08:25,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47854 conditions, 7412 events. 4010/7412 cut-off events. For 186040/186965 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 54430 event pairs, 712 based on Foata normal form. 178/7506 useless extension candidates. Maximal degree in co-relation 47742. Up to 4868 conditions per place. [2024-01-31 16:08:25,336 INFO L140 encePairwiseOnDemand]: 64/81 looper letters, 472 selfloop transitions, 145 changer transitions 0/658 dead transitions. [2024-01-31 16:08:25,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 658 transitions, 12784 flow [2024-01-31 16:08:25,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-31 16:08:25,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-31 16:08:25,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 399 transitions. [2024-01-31 16:08:25,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4104938271604938 [2024-01-31 16:08:25,337 INFO L175 Difference]: Start difference. First operand has 417 places, 602 transitions, 11132 flow. Second operand 12 states and 399 transitions. [2024-01-31 16:08:25,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 658 transitions, 12784 flow [2024-01-31 16:08:25,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 658 transitions, 12601 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-01-31 16:08:25,949 INFO L231 Difference]: Finished difference. Result has 423 places, 609 transitions, 11407 flow [2024-01-31 16:08:25,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=10952, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=602, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11407, PETRI_PLACES=423, PETRI_TRANSITIONS=609} [2024-01-31 16:08:25,950 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 338 predicate places. [2024-01-31 16:08:25,950 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 609 transitions, 11407 flow [2024-01-31 16:08:25,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.9) internal successors, (249), 10 states have internal predecessors, (249), 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) [2024-01-31 16:08:25,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:08:25,950 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, 1, 1] [2024-01-31 16:08:25,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-01-31 16:08:25,951 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting P1Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:08:25,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:08:25,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1639925936, now seen corresponding path program 1 times [2024-01-31 16:08:25,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:08:25,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500294583] [2024-01-31 16:08:25,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:08:25,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:08:25,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:08:26,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:08:26,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:08:26,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500294583] [2024-01-31 16:08:26,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500294583] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:08:26,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:08:26,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:08:26,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936585702] [2024-01-31 16:08:26,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:08:26,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:08:26,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:08:26,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:08:26,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:08:26,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:08:26,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 609 transitions, 11407 flow. Second operand has 11 states, 11 states have (on average 24.90909090909091) internal successors, (274), 11 states have internal predecessors, (274), 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) [2024-01-31 16:08:26,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:08:26,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:08:26,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:08:28,150 INFO L124 PetriNetUnfolderBase]: 3689/7129 cut-off events. [2024-01-31 16:08:28,150 INFO L125 PetriNetUnfolderBase]: For 163713/164947 co-relation queries the response was YES. [2024-01-31 16:08:28,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46440 conditions, 7129 events. 3689/7129 cut-off events. For 163713/164947 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 54368 event pairs, 785 based on Foata normal form. 101/7130 useless extension candidates. Maximal degree in co-relation 46326. Up to 4113 conditions per place. [2024-01-31 16:08:28,214 INFO L140 encePairwiseOnDemand]: 70/81 looper letters, 511 selfloop transitions, 86 changer transitions 11/655 dead transitions. [2024-01-31 16:08:28,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 655 transitions, 13160 flow [2024-01-31 16:08:28,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:08:28,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:08:28,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 304 transitions. [2024-01-31 16:08:28,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4170096021947874 [2024-01-31 16:08:28,216 INFO L175 Difference]: Start difference. First operand has 423 places, 609 transitions, 11407 flow. Second operand 9 states and 304 transitions. [2024-01-31 16:08:28,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 655 transitions, 13160 flow [2024-01-31 16:08:28,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 655 transitions, 12807 flow, removed 38 selfloop flow, removed 12 redundant places. [2024-01-31 16:08:28,696 INFO L231 Difference]: Finished difference. Result has 421 places, 605 transitions, 11337 flow [2024-01-31 16:08:28,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=11082, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=609, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=528, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11337, PETRI_PLACES=421, PETRI_TRANSITIONS=605} [2024-01-31 16:08:28,697 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 336 predicate places. [2024-01-31 16:08:28,697 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 605 transitions, 11337 flow [2024-01-31 16:08:28,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 24.90909090909091) internal successors, (274), 11 states have internal predecessors, (274), 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) [2024-01-31 16:08:28,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:08:28,697 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, 1, 1] [2024-01-31 16:08:28,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-01-31 16:08:28,698 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:08:28,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:08:28,698 INFO L85 PathProgramCache]: Analyzing trace with hash -672192694, now seen corresponding path program 1 times [2024-01-31 16:08:28,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:08:28,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564184703] [2024-01-31 16:08:28,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:08:28,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:08:28,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:08:29,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:08:29,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:08:29,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564184703] [2024-01-31 16:08:29,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564184703] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:08:29,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:08:29,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:08:29,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603257805] [2024-01-31 16:08:29,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:08:29,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:08:29,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:08:29,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:08:29,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:08:29,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:08:29,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 605 transitions, 11337 flow. Second operand has 11 states, 11 states have (on average 24.90909090909091) internal successors, (274), 11 states have internal predecessors, (274), 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) [2024-01-31 16:08:29,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:08:29,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:08:29,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:08:30,815 INFO L124 PetriNetUnfolderBase]: 4039/7647 cut-off events. [2024-01-31 16:08:30,815 INFO L125 PetriNetUnfolderBase]: For 201063/202042 co-relation queries the response was YES. [2024-01-31 16:08:30,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49948 conditions, 7647 events. 4039/7647 cut-off events. For 201063/202042 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 57585 event pairs, 925 based on Foata normal form. 179/7737 useless extension candidates. Maximal degree in co-relation 49835. Up to 5927 conditions per place. [2024-01-31 16:08:30,899 INFO L140 encePairwiseOnDemand]: 68/81 looper letters, 536 selfloop transitions, 71 changer transitions 5/653 dead transitions. [2024-01-31 16:08:30,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 653 transitions, 12974 flow [2024-01-31 16:08:30,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:08:30,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:08:30,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 310 transitions. [2024-01-31 16:08:30,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4252400548696845 [2024-01-31 16:08:30,900 INFO L175 Difference]: Start difference. First operand has 421 places, 605 transitions, 11337 flow. Second operand 9 states and 310 transitions. [2024-01-31 16:08:30,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 653 transitions, 12974 flow [2024-01-31 16:08:31,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 653 transitions, 12780 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-01-31 16:08:31,499 INFO L231 Difference]: Finished difference. Result has 425 places, 604 transitions, 11335 flow [2024-01-31 16:08:31,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=11151, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=605, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=534, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11335, PETRI_PLACES=425, PETRI_TRANSITIONS=604} [2024-01-31 16:08:31,500 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 340 predicate places. [2024-01-31 16:08:31,500 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 604 transitions, 11335 flow [2024-01-31 16:08:31,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 24.90909090909091) internal successors, (274), 11 states have internal predecessors, (274), 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) [2024-01-31 16:08:31,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:08:31,501 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, 1, 1] [2024-01-31 16:08:31,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-01-31 16:08:31,501 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:08:31,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:08:31,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1554792086, now seen corresponding path program 2 times [2024-01-31 16:08:31,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:08:31,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445036823] [2024-01-31 16:08:31,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:08:31,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:08:31,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:08:31,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:08:31,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:08:31,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445036823] [2024-01-31 16:08:31,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445036823] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:08:31,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:08:31,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:08:31,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871483084] [2024-01-31 16:08:31,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:08:31,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:08:31,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:08:31,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:08:31,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:08:31,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:08:31,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 604 transitions, 11335 flow. Second operand has 10 states, 10 states have (on average 25.1) internal successors, (251), 10 states have internal predecessors, (251), 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) [2024-01-31 16:08:31,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:08:31,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:08:31,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:08:33,559 INFO L124 PetriNetUnfolderBase]: 4051/7779 cut-off events. [2024-01-31 16:08:33,559 INFO L125 PetriNetUnfolderBase]: For 192699/193719 co-relation queries the response was YES. [2024-01-31 16:08:33,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50654 conditions, 7779 events. 4051/7779 cut-off events. For 192699/193719 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 59751 event pairs, 895 based on Foata normal form. 186/7862 useless extension candidates. Maximal degree in co-relation 50539. Up to 5012 conditions per place. [2024-01-31 16:08:33,647 INFO L140 encePairwiseOnDemand]: 69/81 looper letters, 529 selfloop transitions, 98 changer transitions 2/670 dead transitions. [2024-01-31 16:08:33,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 670 transitions, 13270 flow [2024-01-31 16:08:33,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:08:33,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:08:33,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 330 transitions. [2024-01-31 16:08:33,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45267489711934156 [2024-01-31 16:08:33,648 INFO L175 Difference]: Start difference. First operand has 425 places, 604 transitions, 11335 flow. Second operand 9 states and 330 transitions. [2024-01-31 16:08:33,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 670 transitions, 13270 flow [2024-01-31 16:08:34,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 670 transitions, 13182 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-01-31 16:08:34,240 INFO L231 Difference]: Finished difference. Result has 430 places, 604 transitions, 11465 flow [2024-01-31 16:08:34,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=11251, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=604, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=507, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11465, PETRI_PLACES=430, PETRI_TRANSITIONS=604} [2024-01-31 16:08:34,241 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 345 predicate places. [2024-01-31 16:08:34,241 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 604 transitions, 11465 flow [2024-01-31 16:08:34,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 25.1) internal successors, (251), 10 states have internal predecessors, (251), 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) [2024-01-31 16:08:34,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:08:34,241 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, 1, 1] [2024-01-31 16:08:34,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-01-31 16:08:34,242 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:08:34,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:08:34,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1524288086, now seen corresponding path program 3 times [2024-01-31 16:08:34,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:08:34,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190416115] [2024-01-31 16:08:34,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:08:34,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:08:34,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:08:34,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:08:34,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:08:34,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190416115] [2024-01-31 16:08:34,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190416115] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:08:34,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:08:34,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:08:34,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884218767] [2024-01-31 16:08:34,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:08:34,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:08:34,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:08:34,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:08:34,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:08:34,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:08:34,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 604 transitions, 11465 flow. Second operand has 10 states, 10 states have (on average 25.1) internal successors, (251), 10 states have internal predecessors, (251), 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) [2024-01-31 16:08:34,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:08:34,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:08:34,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:08:36,306 INFO L124 PetriNetUnfolderBase]: 4032/7758 cut-off events. [2024-01-31 16:08:36,307 INFO L125 PetriNetUnfolderBase]: For 196365/197382 co-relation queries the response was YES. [2024-01-31 16:08:36,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50710 conditions, 7758 events. 4032/7758 cut-off events. For 196365/197382 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 59563 event pairs, 894 based on Foata normal form. 200/7868 useless extension candidates. Maximal degree in co-relation 50593. Up to 5015 conditions per place. [2024-01-31 16:08:36,408 INFO L140 encePairwiseOnDemand]: 70/81 looper letters, 499 selfloop transitions, 103 changer transitions 12/655 dead transitions. [2024-01-31 16:08:36,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 655 transitions, 13147 flow [2024-01-31 16:08:36,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:08:36,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:08:36,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 292 transitions. [2024-01-31 16:08:36,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4506172839506173 [2024-01-31 16:08:36,409 INFO L175 Difference]: Start difference. First operand has 430 places, 604 transitions, 11465 flow. Second operand 8 states and 292 transitions. [2024-01-31 16:08:36,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 655 transitions, 13147 flow [2024-01-31 16:08:37,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 655 transitions, 13040 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-01-31 16:08:37,056 INFO L231 Difference]: Finished difference. Result has 434 places, 593 transitions, 11506 flow [2024-01-31 16:08:37,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=11358, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=604, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=501, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11506, PETRI_PLACES=434, PETRI_TRANSITIONS=593} [2024-01-31 16:08:37,056 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 349 predicate places. [2024-01-31 16:08:37,056 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 593 transitions, 11506 flow [2024-01-31 16:08:37,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 25.1) internal successors, (251), 10 states have internal predecessors, (251), 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) [2024-01-31 16:08:37,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:08:37,057 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, 1, 1] [2024-01-31 16:08:37,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-01-31 16:08:37,057 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting P1Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:08:37,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:08:37,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1776028778, now seen corresponding path program 2 times [2024-01-31 16:08:37,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:08:37,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646440373] [2024-01-31 16:08:37,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:08:37,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:08:37,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:08:37,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:08:37,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:08:37,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646440373] [2024-01-31 16:08:37,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646440373] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:08:37,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:08:37,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:08:37,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577099299] [2024-01-31 16:08:37,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:08:37,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:08:37,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:08:37,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:08:37,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:08:37,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:08:37,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 593 transitions, 11506 flow. Second operand has 10 states, 10 states have (on average 25.1) internal successors, (251), 10 states have internal predecessors, (251), 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) [2024-01-31 16:08:37,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:08:37,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:08:37,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:08:38,957 INFO L124 PetriNetUnfolderBase]: 3693/7287 cut-off events. [2024-01-31 16:08:38,957 INFO L125 PetriNetUnfolderBase]: For 171946/173253 co-relation queries the response was YES. [2024-01-31 16:08:39,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47841 conditions, 7287 events. 3693/7287 cut-off events. For 171946/173253 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 56778 event pairs, 549 based on Foata normal form. 78/7241 useless extension candidates. Maximal degree in co-relation 47722. Up to 2929 conditions per place. [2024-01-31 16:08:39,044 INFO L140 encePairwiseOnDemand]: 63/81 looper letters, 468 selfloop transitions, 151 changer transitions 6/669 dead transitions. [2024-01-31 16:08:39,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 669 transitions, 13540 flow [2024-01-31 16:08:39,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:08:39,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:08:39,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 335 transitions. [2024-01-31 16:08:39,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45953360768175583 [2024-01-31 16:08:39,045 INFO L175 Difference]: Start difference. First operand has 434 places, 593 transitions, 11506 flow. Second operand 9 states and 335 transitions. [2024-01-31 16:08:39,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 669 transitions, 13540 flow [2024-01-31 16:08:39,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 669 transitions, 13161 flow, removed 15 selfloop flow, removed 14 redundant places. [2024-01-31 16:08:39,671 INFO L231 Difference]: Finished difference. Result has 430 places, 589 transitions, 11489 flow [2024-01-31 16:08:39,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=11145, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=593, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11489, PETRI_PLACES=430, PETRI_TRANSITIONS=589} [2024-01-31 16:08:39,671 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 345 predicate places. [2024-01-31 16:08:39,671 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 589 transitions, 11489 flow [2024-01-31 16:08:39,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 25.1) internal successors, (251), 10 states have internal predecessors, (251), 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) [2024-01-31 16:08:39,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:08:39,672 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, 1, 1] [2024-01-31 16:08:39,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-01-31 16:08:39,672 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting P1Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:08:39,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:08:39,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1560064378, now seen corresponding path program 3 times [2024-01-31 16:08:39,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:08:39,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728111460] [2024-01-31 16:08:39,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:08:39,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:08:39,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:08:40,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:08:40,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:08:40,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728111460] [2024-01-31 16:08:40,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728111460] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:08:40,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:08:40,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:08:40,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001130654] [2024-01-31 16:08:40,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:08:40,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:08:40,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:08:40,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:08:40,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:08:40,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:08:40,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 589 transitions, 11489 flow. Second operand has 10 states, 10 states have (on average 25.1) internal successors, (251), 10 states have internal predecessors, (251), 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) [2024-01-31 16:08:40,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:08:40,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:08:40,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:08:41,866 INFO L124 PetriNetUnfolderBase]: 3672/7242 cut-off events. [2024-01-31 16:08:41,866 INFO L125 PetriNetUnfolderBase]: For 169783/171078 co-relation queries the response was YES. [2024-01-31 16:08:41,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48386 conditions, 7242 events. 3672/7242 cut-off events. For 169783/171078 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 56214 event pairs, 527 based on Foata normal form. 78/7196 useless extension candidates. Maximal degree in co-relation 48270. Up to 2929 conditions per place. [2024-01-31 16:08:41,938 INFO L140 encePairwiseOnDemand]: 64/81 looper letters, 466 selfloop transitions, 145 changer transitions 9/664 dead transitions. [2024-01-31 16:08:41,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 664 transitions, 13520 flow [2024-01-31 16:08:41,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:08:41,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:08:41,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 312 transitions. [2024-01-31 16:08:41,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-01-31 16:08:41,939 INFO L175 Difference]: Start difference. First operand has 430 places, 589 transitions, 11489 flow. Second operand 8 states and 312 transitions. [2024-01-31 16:08:41,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 664 transitions, 13520 flow [2024-01-31 16:08:42,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 664 transitions, 13256 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-01-31 16:08:42,467 INFO L231 Difference]: Finished difference. Result has 428 places, 582 transitions, 11452 flow [2024-01-31 16:08:42,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=11231, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=589, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11452, PETRI_PLACES=428, PETRI_TRANSITIONS=582} [2024-01-31 16:08:42,467 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 343 predicate places. [2024-01-31 16:08:42,467 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 582 transitions, 11452 flow [2024-01-31 16:08:42,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 25.1) internal successors, (251), 10 states have internal predecessors, (251), 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) [2024-01-31 16:08:42,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:08:42,467 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, 1, 1] [2024-01-31 16:08:42,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-01-31 16:08:42,468 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting P1Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:08:42,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:08:42,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1525964482, now seen corresponding path program 4 times [2024-01-31 16:08:42,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:08:42,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129819039] [2024-01-31 16:08:42,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:08:42,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:08:42,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:08:42,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:08:42,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:08:42,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129819039] [2024-01-31 16:08:42,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129819039] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:08:42,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:08:42,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:08:42,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847329770] [2024-01-31 16:08:42,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:08:42,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:08:42,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:08:42,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:08:42,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:08:42,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:08:42,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 582 transitions, 11452 flow. Second operand has 10 states, 10 states have (on average 25.1) internal successors, (251), 10 states have internal predecessors, (251), 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) [2024-01-31 16:08:42,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:08:42,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:08:42,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:08:44,387 INFO L124 PetriNetUnfolderBase]: 3600/7106 cut-off events. [2024-01-31 16:08:44,387 INFO L125 PetriNetUnfolderBase]: For 168153/169448 co-relation queries the response was YES. [2024-01-31 16:08:44,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47940 conditions, 7106 events. 3600/7106 cut-off events. For 168153/169448 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 54999 event pairs, 499 based on Foata normal form. 86/7068 useless extension candidates. Maximal degree in co-relation 47824. Up to 2929 conditions per place. [2024-01-31 16:08:44,470 INFO L140 encePairwiseOnDemand]: 64/81 looper letters, 425 selfloop transitions, 145 changer transitions 39/646 dead transitions. [2024-01-31 16:08:44,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 646 transitions, 13322 flow [2024-01-31 16:08:44,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:08:44,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:08:44,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 301 transitions. [2024-01-31 16:08:44,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4645061728395062 [2024-01-31 16:08:44,471 INFO L175 Difference]: Start difference. First operand has 428 places, 582 transitions, 11452 flow. Second operand 8 states and 301 transitions. [2024-01-31 16:08:44,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 646 transitions, 13322 flow [2024-01-31 16:08:45,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 646 transitions, 12946 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-01-31 16:08:45,053 INFO L231 Difference]: Finished difference. Result has 425 places, 543 transitions, 10769 flow [2024-01-31 16:08:45,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=11080, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=582, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10769, PETRI_PLACES=425, PETRI_TRANSITIONS=543} [2024-01-31 16:08:45,054 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 340 predicate places. [2024-01-31 16:08:45,054 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 543 transitions, 10769 flow [2024-01-31 16:08:45,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 25.1) internal successors, (251), 10 states have internal predecessors, (251), 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) [2024-01-31 16:08:45,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:08:45,054 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, 1, 1] [2024-01-31 16:08:45,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-01-31 16:08:45,055 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting P1Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:08:45,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:08:45,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1066438414, now seen corresponding path program 5 times [2024-01-31 16:08:45,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:08:45,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86231567] [2024-01-31 16:08:45,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:08:45,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:08:45,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:08:45,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:08:45,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:08:45,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86231567] [2024-01-31 16:08:45,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86231567] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:08:45,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:08:45,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:08:45,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376690303] [2024-01-31 16:08:45,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:08:45,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:08:45,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:08:45,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:08:45,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:08:45,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:08:45,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 543 transitions, 10769 flow. Second operand has 11 states, 11 states have (on average 24.90909090909091) internal successors, (274), 11 states have internal predecessors, (274), 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) [2024-01-31 16:08:45,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:08:45,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:08:45,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:08:46,990 INFO L124 PetriNetUnfolderBase]: 3335/6737 cut-off events. [2024-01-31 16:08:46,990 INFO L125 PetriNetUnfolderBase]: For 158393/159568 co-relation queries the response was YES. [2024-01-31 16:08:47,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45291 conditions, 6737 events. 3335/6737 cut-off events. For 158393/159568 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 52720 event pairs, 825 based on Foata normal form. 40/6690 useless extension candidates. Maximal degree in co-relation 45178. Up to 5494 conditions per place. [2024-01-31 16:08:47,060 INFO L140 encePairwiseOnDemand]: 71/81 looper letters, 480 selfloop transitions, 42 changer transitions 17/576 dead transitions. [2024-01-31 16:08:47,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 576 transitions, 12074 flow [2024-01-31 16:08:47,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:08:47,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:08:47,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 294 transitions. [2024-01-31 16:08:47,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40329218106995884 [2024-01-31 16:08:47,061 INFO L175 Difference]: Start difference. First operand has 425 places, 543 transitions, 10769 flow. Second operand 9 states and 294 transitions. [2024-01-31 16:08:47,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 576 transitions, 12074 flow [2024-01-31 16:08:47,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 576 transitions, 11399 flow, removed 10 selfloop flow, removed 22 redundant places. [2024-01-31 16:08:47,528 INFO L231 Difference]: Finished difference. Result has 412 places, 529 transitions, 9988 flow [2024-01-31 16:08:47,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=10106, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=543, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=501, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9988, PETRI_PLACES=412, PETRI_TRANSITIONS=529} [2024-01-31 16:08:47,528 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 327 predicate places. [2024-01-31 16:08:47,528 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 529 transitions, 9988 flow [2024-01-31 16:08:47,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 24.90909090909091) internal successors, (274), 11 states have internal predecessors, (274), 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) [2024-01-31 16:08:47,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:08:47,528 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, 1, 1] [2024-01-31 16:08:47,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-01-31 16:08:47,529 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting P1Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:08:47,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:08:47,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1739559780, now seen corresponding path program 6 times [2024-01-31 16:08:47,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:08:47,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133531962] [2024-01-31 16:08:47,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:08:47,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:08:47,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:08:47,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:08:47,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:08:47,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133531962] [2024-01-31 16:08:47,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133531962] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:08:47,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:08:47,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:08:47,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372730523] [2024-01-31 16:08:47,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:08:47,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:08:47,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:08:47,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:08:47,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:08:47,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:08:47,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 529 transitions, 9988 flow. Second operand has 11 states, 11 states have (on average 24.90909090909091) internal successors, (274), 11 states have internal predecessors, (274), 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) [2024-01-31 16:08:47,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:08:47,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:08:47,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:08:49,215 INFO L124 PetriNetUnfolderBase]: 3316/6708 cut-off events. [2024-01-31 16:08:49,215 INFO L125 PetriNetUnfolderBase]: For 136642/137812 co-relation queries the response was YES. [2024-01-31 16:08:49,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43635 conditions, 6708 events. 3316/6708 cut-off events. For 136642/137812 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 52479 event pairs, 824 based on Foata normal form. 40/6661 useless extension candidates. Maximal degree in co-relation 43528. Up to 5484 conditions per place. [2024-01-31 16:08:49,283 INFO L140 encePairwiseOnDemand]: 71/81 looper letters, 467 selfloop transitions, 44 changer transitions 15/563 dead transitions. [2024-01-31 16:08:49,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 563 transitions, 11244 flow [2024-01-31 16:08:49,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:08:49,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:08:49,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 294 transitions. [2024-01-31 16:08:49,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40329218106995884 [2024-01-31 16:08:49,284 INFO L175 Difference]: Start difference. First operand has 412 places, 529 transitions, 9988 flow. Second operand 9 states and 294 transitions. [2024-01-31 16:08:49,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 563 transitions, 11244 flow [2024-01-31 16:08:49,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 563 transitions, 11105 flow, removed 1 selfloop flow, removed 15 redundant places. [2024-01-31 16:08:49,696 INFO L231 Difference]: Finished difference. Result has 406 places, 517 transitions, 9778 flow [2024-01-31 16:08:49,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=9849, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=529, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9778, PETRI_PLACES=406, PETRI_TRANSITIONS=517} [2024-01-31 16:08:49,697 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 321 predicate places. [2024-01-31 16:08:49,697 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 517 transitions, 9778 flow [2024-01-31 16:08:49,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 24.90909090909091) internal successors, (274), 11 states have internal predecessors, (274), 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) [2024-01-31 16:08:49,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:08:49,697 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, 1, 1] [2024-01-31 16:08:49,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-01-31 16:08:49,697 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting P1Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:08:49,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:08:49,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1170730750, now seen corresponding path program 7 times [2024-01-31 16:08:49,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:08:49,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124721556] [2024-01-31 16:08:49,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:08:49,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:08:49,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:08:50,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:08:50,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:08:50,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124721556] [2024-01-31 16:08:50,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124721556] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:08:50,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:08:50,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:08:50,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179137855] [2024-01-31 16:08:50,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:08:50,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:08:50,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:08:50,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:08:50,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:08:50,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:08:50,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 517 transitions, 9778 flow. Second operand has 11 states, 11 states have (on average 24.90909090909091) internal successors, (274), 11 states have internal predecessors, (274), 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) [2024-01-31 16:08:50,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:08:50,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:08:50,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:08:51,523 INFO L124 PetriNetUnfolderBase]: 3279/6634 cut-off events. [2024-01-31 16:08:51,523 INFO L125 PetriNetUnfolderBase]: For 134308/135470 co-relation queries the response was YES. [2024-01-31 16:08:51,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43139 conditions, 6634 events. 3279/6634 cut-off events. For 134308/135470 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 51669 event pairs, 799 based on Foata normal form. 40/6587 useless extension candidates. Maximal degree in co-relation 43032. Up to 5146 conditions per place. [2024-01-31 16:08:51,588 INFO L140 encePairwiseOnDemand]: 71/81 looper letters, 448 selfloop transitions, 38 changer transitions 27/550 dead transitions. [2024-01-31 16:08:51,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 550 transitions, 10977 flow [2024-01-31 16:08:51,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:08:51,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:08:51,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 295 transitions. [2024-01-31 16:08:51,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4046639231824417 [2024-01-31 16:08:51,589 INFO L175 Difference]: Start difference. First operand has 406 places, 517 transitions, 9778 flow. Second operand 9 states and 295 transitions. [2024-01-31 16:08:51,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 550 transitions, 10977 flow [2024-01-31 16:08:52,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 550 transitions, 10856 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-01-31 16:08:52,024 INFO L231 Difference]: Finished difference. Result has 402 places, 492 transitions, 9300 flow [2024-01-31 16:08:52,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=9657, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=517, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=479, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9300, PETRI_PLACES=402, PETRI_TRANSITIONS=492} [2024-01-31 16:08:52,024 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 317 predicate places. [2024-01-31 16:08:52,024 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 492 transitions, 9300 flow [2024-01-31 16:08:52,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 24.90909090909091) internal successors, (274), 11 states have internal predecessors, (274), 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) [2024-01-31 16:08:52,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:08:52,025 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, 1, 1] [2024-01-31 16:08:52,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-01-31 16:08:52,025 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting P1Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:08:52,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:08:52,025 INFO L85 PathProgramCache]: Analyzing trace with hash -805928168, now seen corresponding path program 8 times [2024-01-31 16:08:52,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:08:52,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214069170] [2024-01-31 16:08:52,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:08:52,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:08:52,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:08:52,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:08:52,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:08:52,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214069170] [2024-01-31 16:08:52,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214069170] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:08:52,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:08:52,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:08:52,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798815266] [2024-01-31 16:08:52,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:08:52,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:08:52,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:08:52,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:08:52,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:08:52,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:08:52,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 492 transitions, 9300 flow. Second operand has 10 states, 10 states have (on average 25.1) internal successors, (251), 10 states have internal predecessors, (251), 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) [2024-01-31 16:08:52,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:08:52,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:08:52,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:08:53,673 INFO L124 PetriNetUnfolderBase]: 3194/6461 cut-off events. [2024-01-31 16:08:53,673 INFO L125 PetriNetUnfolderBase]: For 132965/134187 co-relation queries the response was YES. [2024-01-31 16:08:53,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42045 conditions, 6461 events. 3194/6461 cut-off events. For 132965/134187 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 50337 event pairs, 671 based on Foata normal form. 57/6436 useless extension candidates. Maximal degree in co-relation 41939. Up to 2547 conditions per place. [2024-01-31 16:08:53,739 INFO L140 encePairwiseOnDemand]: 70/81 looper letters, 399 selfloop transitions, 98 changer transitions 5/539 dead transitions. [2024-01-31 16:08:53,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 539 transitions, 10739 flow [2024-01-31 16:08:53,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:08:53,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:08:53,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 288 transitions. [2024-01-31 16:08:53,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-01-31 16:08:53,740 INFO L175 Difference]: Start difference. First operand has 402 places, 492 transitions, 9300 flow. Second operand 8 states and 288 transitions. [2024-01-31 16:08:53,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 539 transitions, 10739 flow [2024-01-31 16:08:54,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 539 transitions, 10548 flow, removed 8 selfloop flow, removed 20 redundant places. [2024-01-31 16:08:54,150 INFO L231 Difference]: Finished difference. Result has 390 places, 488 transitions, 9315 flow [2024-01-31 16:08:54,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=9101, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=9315, PETRI_PLACES=390, PETRI_TRANSITIONS=488} [2024-01-31 16:08:54,150 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 305 predicate places. [2024-01-31 16:08:54,150 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 488 transitions, 9315 flow [2024-01-31 16:08:54,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 25.1) internal successors, (251), 10 states have internal predecessors, (251), 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) [2024-01-31 16:08:54,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:08:54,150 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, 1, 1] [2024-01-31 16:08:54,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-01-31 16:08:54,151 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting P1Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:08:54,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:08:54,151 INFO L85 PathProgramCache]: Analyzing trace with hash -824944808, now seen corresponding path program 9 times [2024-01-31 16:08:54,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:08:54,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495831135] [2024-01-31 16:08:54,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:08:54,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:08:54,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:08:54,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:08:54,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:08:54,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495831135] [2024-01-31 16:08:54,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495831135] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:08:54,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:08:54,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:08:54,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099733631] [2024-01-31 16:08:54,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:08:54,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:08:54,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:08:54,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:08:54,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:08:54,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:08:54,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 488 transitions, 9315 flow. Second operand has 10 states, 10 states have (on average 25.1) internal successors, (251), 10 states have internal predecessors, (251), 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) [2024-01-31 16:08:54,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:08:54,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:08:54,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:08:55,822 INFO L124 PetriNetUnfolderBase]: 3182/6449 cut-off events. [2024-01-31 16:08:55,822 INFO L125 PetriNetUnfolderBase]: For 133195/134405 co-relation queries the response was YES. [2024-01-31 16:08:55,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42034 conditions, 6449 events. 3182/6449 cut-off events. For 133195/134405 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 50235 event pairs, 709 based on Foata normal form. 41/6399 useless extension candidates. Maximal degree in co-relation 41929. Up to 1832 conditions per place. [2024-01-31 16:08:55,886 INFO L140 encePairwiseOnDemand]: 71/81 looper letters, 364 selfloop transitions, 117 changer transitions 15/533 dead transitions. [2024-01-31 16:08:55,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 533 transitions, 10669 flow [2024-01-31 16:08:55,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:08:55,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:08:55,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 285 transitions. [2024-01-31 16:08:55,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398148148148148 [2024-01-31 16:08:55,887 INFO L175 Difference]: Start difference. First operand has 390 places, 488 transitions, 9315 flow. Second operand 8 states and 285 transitions. [2024-01-31 16:08:55,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 533 transitions, 10669 flow [2024-01-31 16:08:56,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 533 transitions, 10285 flow, removed 2 selfloop flow, removed 16 redundant places. [2024-01-31 16:08:56,286 INFO L231 Difference]: Finished difference. Result has 379 places, 472 transitions, 8938 flow [2024-01-31 16:08:56,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=8887, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8938, PETRI_PLACES=379, PETRI_TRANSITIONS=472} [2024-01-31 16:08:56,286 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 294 predicate places. [2024-01-31 16:08:56,286 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 472 transitions, 8938 flow [2024-01-31 16:08:56,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 25.1) internal successors, (251), 10 states have internal predecessors, (251), 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) [2024-01-31 16:08:56,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:08:56,287 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, 1, 1] [2024-01-31 16:08:56,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-01-31 16:08:56,287 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:08:56,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:08:56,287 INFO L85 PathProgramCache]: Analyzing trace with hash -174154456, now seen corresponding path program 4 times [2024-01-31 16:08:56,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:08:56,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24247689] [2024-01-31 16:08:56,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:08:56,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:08:56,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:08:56,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:08:56,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:08:56,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24247689] [2024-01-31 16:08:56,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24247689] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:08:56,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:08:56,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:08:56,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578201388] [2024-01-31 16:08:56,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:08:56,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:08:56,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:08:56,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:08:56,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:08:56,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:08:56,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 472 transitions, 8938 flow. Second operand has 10 states, 10 states have (on average 25.1) internal successors, (251), 10 states have internal predecessors, (251), 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) [2024-01-31 16:08:56,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:08:56,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:08:56,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:08:58,111 INFO L124 PetriNetUnfolderBase]: 3711/7258 cut-off events. [2024-01-31 16:08:58,111 INFO L125 PetriNetUnfolderBase]: For 158941/159809 co-relation queries the response was YES. [2024-01-31 16:08:58,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47553 conditions, 7258 events. 3711/7258 cut-off events. For 158941/159809 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 55141 event pairs, 966 based on Foata normal form. 171/7346 useless extension candidates. Maximal degree in co-relation 47459. Up to 3242 conditions per place. [2024-01-31 16:08:58,196 INFO L140 encePairwiseOnDemand]: 68/81 looper letters, 432 selfloop transitions, 76 changer transitions 26/570 dead transitions. [2024-01-31 16:08:58,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 570 transitions, 10969 flow [2024-01-31 16:08:58,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-31 16:08:58,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-31 16:08:58,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 338 transitions. [2024-01-31 16:08:58,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46364883401920437 [2024-01-31 16:08:58,201 INFO L175 Difference]: Start difference. First operand has 379 places, 472 transitions, 8938 flow. Second operand 9 states and 338 transitions. [2024-01-31 16:08:58,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 570 transitions, 10969 flow [2024-01-31 16:08:58,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 570 transitions, 10681 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-01-31 16:08:58,667 INFO L231 Difference]: Finished difference. Result has 379 places, 452 transitions, 8509 flow [2024-01-31 16:08:58,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=8664, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8509, PETRI_PLACES=379, PETRI_TRANSITIONS=452} [2024-01-31 16:08:58,668 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 294 predicate places. [2024-01-31 16:08:58,668 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 452 transitions, 8509 flow [2024-01-31 16:08:58,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 25.1) internal successors, (251), 10 states have internal predecessors, (251), 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) [2024-01-31 16:08:58,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:08:58,669 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, 1, 1] [2024-01-31 16:08:58,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-01-31 16:08:58,669 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:08:58,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:08:58,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1161975242, now seen corresponding path program 5 times [2024-01-31 16:08:58,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:08:58,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299246791] [2024-01-31 16:08:58,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:08:58,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:08:58,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:08:59,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:08:59,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:08:59,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299246791] [2024-01-31 16:08:59,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299246791] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:08:59,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:08:59,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:08:59,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693015604] [2024-01-31 16:08:59,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:08:59,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:08:59,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:08:59,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:08:59,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:08:59,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:08:59,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 452 transitions, 8509 flow. Second operand has 11 states, 11 states have (on average 24.90909090909091) internal successors, (274), 11 states have internal predecessors, (274), 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) [2024-01-31 16:08:59,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:08:59,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:08:59,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:09:00,431 INFO L124 PetriNetUnfolderBase]: 3509/6938 cut-off events. [2024-01-31 16:09:00,431 INFO L125 PetriNetUnfolderBase]: For 144847/145663 co-relation queries the response was YES. [2024-01-31 16:09:00,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44993 conditions, 6938 events. 3509/6938 cut-off events. For 144847/145663 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 52487 event pairs, 1032 based on Foata normal form. 169/7025 useless extension candidates. Maximal degree in co-relation 44899. Up to 5202 conditions per place. [2024-01-31 16:09:00,497 INFO L140 encePairwiseOnDemand]: 72/81 looper letters, 410 selfloop transitions, 46 changer transitions 23/515 dead transitions. [2024-01-31 16:09:00,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 515 transitions, 10024 flow [2024-01-31 16:09:00,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:09:00,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:09:00,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 283 transitions. [2024-01-31 16:09:00,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4367283950617284 [2024-01-31 16:09:00,498 INFO L175 Difference]: Start difference. First operand has 379 places, 452 transitions, 8509 flow. Second operand 8 states and 283 transitions. [2024-01-31 16:09:00,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 515 transitions, 10024 flow [2024-01-31 16:09:00,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 515 transitions, 9905 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-01-31 16:09:00,881 INFO L231 Difference]: Finished difference. Result has 379 places, 434 transitions, 8176 flow [2024-01-31 16:09:00,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=8390, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8176, PETRI_PLACES=379, PETRI_TRANSITIONS=434} [2024-01-31 16:09:00,881 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 294 predicate places. [2024-01-31 16:09:00,881 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 434 transitions, 8176 flow [2024-01-31 16:09:00,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 24.90909090909091) internal successors, (274), 11 states have internal predecessors, (274), 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) [2024-01-31 16:09:00,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:09:00,882 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, 1, 1] [2024-01-31 16:09:00,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-01-31 16:09:00,882 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:09:00,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:09:00,882 INFO L85 PathProgramCache]: Analyzing trace with hash 673030442, now seen corresponding path program 6 times [2024-01-31 16:09:00,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:09:00,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382249347] [2024-01-31 16:09:00,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:09:00,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:09:00,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:09:01,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:09:01,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:09:01,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382249347] [2024-01-31 16:09:01,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382249347] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:09:01,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:09:01,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:09:01,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126127248] [2024-01-31 16:09:01,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:09:01,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:09:01,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:09:01,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:09:01,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:09:01,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:09:01,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 434 transitions, 8176 flow. Second operand has 11 states, 11 states have (on average 24.90909090909091) internal successors, (274), 11 states have internal predecessors, (274), 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) [2024-01-31 16:09:01,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:09:01,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:09:01,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:09:02,685 INFO L124 PetriNetUnfolderBase]: 3352/6697 cut-off events. [2024-01-31 16:09:02,685 INFO L125 PetriNetUnfolderBase]: For 138414/139214 co-relation queries the response was YES. [2024-01-31 16:09:02,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42994 conditions, 6697 events. 3352/6697 cut-off events. For 138414/139214 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 50523 event pairs, 1012 based on Foata normal form. 167/6782 useless extension candidates. Maximal degree in co-relation 42899. Up to 5202 conditions per place. [2024-01-31 16:09:02,763 INFO L140 encePairwiseOnDemand]: 72/81 looper letters, 410 selfloop transitions, 39 changer transitions 18/503 dead transitions. [2024-01-31 16:09:02,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 503 transitions, 9659 flow [2024-01-31 16:09:02,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 16:09:02,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 16:09:02,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 345 transitions. [2024-01-31 16:09:02,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42592592592592593 [2024-01-31 16:09:02,764 INFO L175 Difference]: Start difference. First operand has 379 places, 434 transitions, 8176 flow. Second operand 10 states and 345 transitions. [2024-01-31 16:09:02,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 503 transitions, 9659 flow [2024-01-31 16:09:03,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 503 transitions, 9558 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-01-31 16:09:03,176 INFO L231 Difference]: Finished difference. Result has 380 places, 416 transitions, 7798 flow [2024-01-31 16:09:03,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=8075, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7798, PETRI_PLACES=380, PETRI_TRANSITIONS=416} [2024-01-31 16:09:03,177 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 295 predicate places. [2024-01-31 16:09:03,177 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 416 transitions, 7798 flow [2024-01-31 16:09:03,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 24.90909090909091) internal successors, (274), 11 states have internal predecessors, (274), 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) [2024-01-31 16:09:03,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:09:03,177 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, 1, 1] [2024-01-31 16:09:03,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-01-31 16:09:03,178 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:09:03,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:09:03,178 INFO L85 PathProgramCache]: Analyzing trace with hash -761374090, now seen corresponding path program 7 times [2024-01-31 16:09:03,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:09:03,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635131359] [2024-01-31 16:09:03,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:09:03,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:09:03,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:09:03,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:09:03,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:09:03,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635131359] [2024-01-31 16:09:03,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635131359] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:09:03,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:09:03,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:09:03,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358488427] [2024-01-31 16:09:03,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:09:03,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-31 16:09:03,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:09:03,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-31 16:09:03,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-01-31 16:09:03,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:09:03,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 416 transitions, 7798 flow. Second operand has 10 states, 10 states have (on average 25.1) internal successors, (251), 10 states have internal predecessors, (251), 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) [2024-01-31 16:09:03,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:09:03,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:09:03,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:09:04,853 INFO L124 PetriNetUnfolderBase]: 3335/6631 cut-off events. [2024-01-31 16:09:04,854 INFO L125 PetriNetUnfolderBase]: For 137319/138083 co-relation queries the response was YES. [2024-01-31 16:09:04,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42545 conditions, 6631 events. 3335/6631 cut-off events. For 137319/138083 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 49515 event pairs, 660 based on Foata normal form. 166/6725 useless extension candidates. Maximal degree in co-relation 42449. Up to 3210 conditions per place. [2024-01-31 16:09:04,919 INFO L140 encePairwiseOnDemand]: 63/81 looper letters, 311 selfloop transitions, 108 changer transitions 29/480 dead transitions. [2024-01-31 16:09:04,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 480 transitions, 9283 flow [2024-01-31 16:09:04,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:09:04,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:09:04,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 304 transitions. [2024-01-31 16:09:04,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4691358024691358 [2024-01-31 16:09:04,920 INFO L175 Difference]: Start difference. First operand has 380 places, 416 transitions, 7798 flow. Second operand 8 states and 304 transitions. [2024-01-31 16:09:04,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 480 transitions, 9283 flow [2024-01-31 16:09:05,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 480 transitions, 9191 flow, removed 0 selfloop flow, removed 13 redundant places. [2024-01-31 16:09:05,310 INFO L231 Difference]: Finished difference. Result has 376 places, 391 transitions, 7585 flow [2024-01-31 16:09:05,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=7706, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7585, PETRI_PLACES=376, PETRI_TRANSITIONS=391} [2024-01-31 16:09:05,310 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 291 predicate places. [2024-01-31 16:09:05,310 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 391 transitions, 7585 flow [2024-01-31 16:09:05,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 25.1) internal successors, (251), 10 states have internal predecessors, (251), 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) [2024-01-31 16:09:05,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:09:05,311 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, 1, 1] [2024-01-31 16:09:05,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-01-31 16:09:05,311 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:09:05,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:09:05,311 INFO L85 PathProgramCache]: Analyzing trace with hash 753285750, now seen corresponding path program 8 times [2024-01-31 16:09:05,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:09:05,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824522857] [2024-01-31 16:09:05,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:09:05,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:09:05,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:09:05,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:09:05,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:09:05,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824522857] [2024-01-31 16:09:05,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824522857] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:09:05,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:09:05,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:09:05,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239895812] [2024-01-31 16:09:05,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:09:05,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:09:05,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:09:05,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:09:05,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:09:05,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:09:05,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 391 transitions, 7585 flow. Second operand has 11 states, 11 states have (on average 24.90909090909091) internal successors, (274), 11 states have internal predecessors, (274), 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) [2024-01-31 16:09:05,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:09:05,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:09:05,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:09:07,076 INFO L124 PetriNetUnfolderBase]: 3195/6507 cut-off events. [2024-01-31 16:09:07,076 INFO L125 PetriNetUnfolderBase]: For 138974/139684 co-relation queries the response was YES. [2024-01-31 16:09:07,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42673 conditions, 6507 events. 3195/6507 cut-off events. For 138974/139684 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 49273 event pairs, 947 based on Foata normal form. 154/6593 useless extension candidates. Maximal degree in co-relation 42577. Up to 4770 conditions per place. [2024-01-31 16:09:07,147 INFO L140 encePairwiseOnDemand]: 72/81 looper letters, 358 selfloop transitions, 41 changer transitions 23/454 dead transitions. [2024-01-31 16:09:07,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 454 transitions, 9014 flow [2024-01-31 16:09:07,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:09:07,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:09:07,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 281 transitions. [2024-01-31 16:09:07,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43364197530864196 [2024-01-31 16:09:07,148 INFO L175 Difference]: Start difference. First operand has 376 places, 391 transitions, 7585 flow. Second operand 8 states and 281 transitions. [2024-01-31 16:09:07,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 454 transitions, 9014 flow [2024-01-31 16:09:07,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 454 transitions, 8624 flow, removed 8 selfloop flow, removed 14 redundant places. [2024-01-31 16:09:07,513 INFO L231 Difference]: Finished difference. Result has 370 places, 373 transitions, 6967 flow [2024-01-31 16:09:07,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=7207, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6967, PETRI_PLACES=370, PETRI_TRANSITIONS=373} [2024-01-31 16:09:07,513 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 285 predicate places. [2024-01-31 16:09:07,513 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 373 transitions, 6967 flow [2024-01-31 16:09:07,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 24.90909090909091) internal successors, (274), 11 states have internal predecessors, (274), 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) [2024-01-31 16:09:07,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:09:07,514 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, 1, 1] [2024-01-31 16:09:07,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-01-31 16:09:07,514 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:09:07,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:09:07,514 INFO L85 PathProgramCache]: Analyzing trace with hash 925242500, now seen corresponding path program 9 times [2024-01-31 16:09:07,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:09:07,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874158092] [2024-01-31 16:09:07,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:09:07,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:09:07,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:09:07,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:09:07,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:09:07,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874158092] [2024-01-31 16:09:07,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874158092] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:09:07,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:09:07,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:09:07,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793077646] [2024-01-31 16:09:07,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:09:07,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:09:07,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:09:07,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:09:07,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:09:07,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:09:07,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 373 transitions, 6967 flow. Second operand has 11 states, 11 states have (on average 24.90909090909091) internal successors, (274), 11 states have internal predecessors, (274), 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) [2024-01-31 16:09:07,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:09:07,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:09:07,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:09:09,175 INFO L124 PetriNetUnfolderBase]: 3042/6230 cut-off events. [2024-01-31 16:09:09,175 INFO L125 PetriNetUnfolderBase]: For 120139/120827 co-relation queries the response was YES. [2024-01-31 16:09:09,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39650 conditions, 6230 events. 3042/6230 cut-off events. For 120139/120827 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 46743 event pairs, 891 based on Foata normal form. 130/6293 useless extension candidates. Maximal degree in co-relation 39558. Up to 2911 conditions per place. [2024-01-31 16:09:09,234 INFO L140 encePairwiseOnDemand]: 72/81 looper letters, 301 selfloop transitions, 55 changer transitions 27/411 dead transitions. [2024-01-31 16:09:09,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 411 transitions, 8009 flow [2024-01-31 16:09:09,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:09:09,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:09:09,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 276 transitions. [2024-01-31 16:09:09,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42592592592592593 [2024-01-31 16:09:09,235 INFO L175 Difference]: Start difference. First operand has 370 places, 373 transitions, 6967 flow. Second operand 8 states and 276 transitions. [2024-01-31 16:09:09,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 411 transitions, 8009 flow [2024-01-31 16:09:09,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 411 transitions, 7906 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-01-31 16:09:09,537 INFO L231 Difference]: Finished difference. Result has 368 places, 346 transitions, 6591 flow [2024-01-31 16:09:09,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=6864, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6591, PETRI_PLACES=368, PETRI_TRANSITIONS=346} [2024-01-31 16:09:09,538 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 283 predicate places. [2024-01-31 16:09:09,538 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 346 transitions, 6591 flow [2024-01-31 16:09:09,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 24.90909090909091) internal successors, (274), 11 states have internal predecessors, (274), 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) [2024-01-31 16:09:09,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:09:09,538 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, 1, 1] [2024-01-31 16:09:09,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-01-31 16:09:09,538 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:09:09,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:09:09,538 INFO L85 PathProgramCache]: Analyzing trace with hash -762690034, now seen corresponding path program 10 times [2024-01-31 16:09:09,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:09:09,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088417425] [2024-01-31 16:09:09,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:09:09,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:09:09,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:09:09,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:09:09,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:09:09,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088417425] [2024-01-31 16:09:09,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088417425] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:09:09,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:09:09,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:09:09,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051353669] [2024-01-31 16:09:09,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:09:09,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:09:09,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:09:09,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:09:09,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:09:09,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:09:09,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 346 transitions, 6591 flow. Second operand has 11 states, 11 states have (on average 24.90909090909091) internal successors, (274), 11 states have internal predecessors, (274), 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) [2024-01-31 16:09:09,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:09:09,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:09:09,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:09:11,055 INFO L124 PetriNetUnfolderBase]: 2876/5992 cut-off events. [2024-01-31 16:09:11,056 INFO L125 PetriNetUnfolderBase]: For 115109/115759 co-relation queries the response was YES. [2024-01-31 16:09:11,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37736 conditions, 5992 events. 2876/5992 cut-off events. For 115109/115759 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 45308 event pairs, 895 based on Foata normal form. 118/6046 useless extension candidates. Maximal degree in co-relation 37643. Up to 4506 conditions per place. [2024-01-31 16:09:11,121 INFO L140 encePairwiseOnDemand]: 72/81 looper letters, 337 selfloop transitions, 35 changer transitions 15/415 dead transitions. [2024-01-31 16:09:11,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 415 transitions, 7928 flow [2024-01-31 16:09:11,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 16:09:11,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 16:09:11,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 343 transitions. [2024-01-31 16:09:11,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42345679012345677 [2024-01-31 16:09:11,122 INFO L175 Difference]: Start difference. First operand has 368 places, 346 transitions, 6591 flow. Second operand 10 states and 343 transitions. [2024-01-31 16:09:11,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 415 transitions, 7928 flow [2024-01-31 16:09:11,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 415 transitions, 7499 flow, removed 17 selfloop flow, removed 19 redundant places. [2024-01-31 16:09:11,420 INFO L231 Difference]: Finished difference. Result has 359 places, 332 transitions, 6021 flow [2024-01-31 16:09:11,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=6195, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6021, PETRI_PLACES=359, PETRI_TRANSITIONS=332} [2024-01-31 16:09:11,420 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 274 predicate places. [2024-01-31 16:09:11,420 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 332 transitions, 6021 flow [2024-01-31 16:09:11,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 24.90909090909091) internal successors, (274), 11 states have internal predecessors, (274), 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) [2024-01-31 16:09:11,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:09:11,421 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, 1, 1] [2024-01-31 16:09:11,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-01-31 16:09:11,421 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:09:11,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:09:11,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1534719112, now seen corresponding path program 11 times [2024-01-31 16:09:11,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:09:11,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414547397] [2024-01-31 16:09:11,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:09:11,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:09:11,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:09:11,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:09:11,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:09:11,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414547397] [2024-01-31 16:09:11,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414547397] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:09:11,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:09:11,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:09:11,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978494073] [2024-01-31 16:09:11,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:09:11,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:09:11,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:09:11,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:09:11,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:09:11,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:09:11,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 332 transitions, 6021 flow. Second operand has 11 states, 11 states have (on average 24.90909090909091) internal successors, (274), 11 states have internal predecessors, (274), 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) [2024-01-31 16:09:11,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:09:11,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:09:11,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:09:12,883 INFO L124 PetriNetUnfolderBase]: 2869/6002 cut-off events. [2024-01-31 16:09:12,884 INFO L125 PetriNetUnfolderBase]: For 94431/94949 co-relation queries the response was YES. [2024-01-31 16:09:12,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36480 conditions, 6002 events. 2869/6002 cut-off events. For 94431/94949 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 45277 event pairs, 886 based on Foata normal form. 104/6036 useless extension candidates. Maximal degree in co-relation 36392. Up to 2911 conditions per place. [2024-01-31 16:09:12,939 INFO L140 encePairwiseOnDemand]: 72/81 looper letters, 297 selfloop transitions, 51 changer transitions 13/389 dead transitions. [2024-01-31 16:09:12,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 389 transitions, 7156 flow [2024-01-31 16:09:12,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 16:09:12,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 16:09:12,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 343 transitions. [2024-01-31 16:09:12,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42345679012345677 [2024-01-31 16:09:12,940 INFO L175 Difference]: Start difference. First operand has 359 places, 332 transitions, 6021 flow. Second operand 10 states and 343 transitions. [2024-01-31 16:09:12,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 389 transitions, 7156 flow [2024-01-31 16:09:13,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 389 transitions, 7069 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-01-31 16:09:13,173 INFO L231 Difference]: Finished difference. Result has 357 places, 320 transitions, 5844 flow [2024-01-31 16:09:13,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=5934, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5844, PETRI_PLACES=357, PETRI_TRANSITIONS=320} [2024-01-31 16:09:13,174 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 272 predicate places. [2024-01-31 16:09:13,174 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 320 transitions, 5844 flow [2024-01-31 16:09:13,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 24.90909090909091) internal successors, (274), 11 states have internal predecessors, (274), 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) [2024-01-31 16:09:13,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:09:13,174 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, 1, 1] [2024-01-31 16:09:13,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-01-31 16:09:13,174 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:09:13,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:09:13,174 INFO L85 PathProgramCache]: Analyzing trace with hash 324499514, now seen corresponding path program 12 times [2024-01-31 16:09:13,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:09:13,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216518566] [2024-01-31 16:09:13,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:09:13,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:09:13,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:09:13,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:09:13,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:09:13,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216518566] [2024-01-31 16:09:13,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216518566] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:09:13,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:09:13,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-31 16:09:13,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560797382] [2024-01-31 16:09:13,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:09:13,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 16:09:13,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:09:13,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 16:09:13,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-01-31 16:09:13,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 81 [2024-01-31 16:09:13,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 320 transitions, 5844 flow. Second operand has 11 states, 11 states have (on average 24.90909090909091) internal successors, (274), 11 states have internal predecessors, (274), 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) [2024-01-31 16:09:13,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:09:13,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 81 [2024-01-31 16:09:13,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:09:14,584 INFO L124 PetriNetUnfolderBase]: 2830/5934 cut-off events. [2024-01-31 16:09:14,584 INFO L125 PetriNetUnfolderBase]: For 93040/93554 co-relation queries the response was YES. [2024-01-31 16:09:14,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35963 conditions, 5934 events. 2830/5934 cut-off events. For 93040/93554 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 44650 event pairs, 779 based on Foata normal form. 96/5956 useless extension candidates. Maximal degree in co-relation 35874. Up to 2911 conditions per place. [2024-01-31 16:09:14,639 INFO L140 encePairwiseOnDemand]: 65/81 looper letters, 272 selfloop transitions, 54 changer transitions 19/372 dead transitions. [2024-01-31 16:09:14,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 372 transitions, 6847 flow [2024-01-31 16:09:14,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-31 16:09:14,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-31 16:09:14,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 371 transitions. [2024-01-31 16:09:14,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4163860830527497 [2024-01-31 16:09:14,641 INFO L175 Difference]: Start difference. First operand has 357 places, 320 transitions, 5844 flow. Second operand 11 states and 371 transitions. [2024-01-31 16:09:14,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 372 transitions, 6847 flow [2024-01-31 16:09:14,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 372 transitions, 6499 flow, removed 16 selfloop flow, removed 27 redundant places. [2024-01-31 16:09:14,862 INFO L231 Difference]: Finished difference. Result has 338 places, 299 transitions, 5276 flow [2024-01-31 16:09:14,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=5446, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5276, PETRI_PLACES=338, PETRI_TRANSITIONS=299} [2024-01-31 16:09:14,862 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 253 predicate places. [2024-01-31 16:09:14,862 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 299 transitions, 5276 flow [2024-01-31 16:09:14,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 24.90909090909091) internal successors, (274), 11 states have internal predecessors, (274), 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) [2024-01-31 16:09:14,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:09:14,863 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, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:09:14,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-01-31 16:09:14,863 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 65 more)] === [2024-01-31 16:09:14,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:09:14,863 INFO L85 PathProgramCache]: Analyzing trace with hash -265545478, now seen corresponding path program 1 times [2024-01-31 16:09:14,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:09:14,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662517989] [2024-01-31 16:09:14,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:09:14,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:09:14,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:09:14,873 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-31 16:09:14,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:09:14,926 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-31 16:09:14,926 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-31 16:09:14,927 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (67 of 68 remaining) [2024-01-31 16:09:14,928 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT (66 of 68 remaining) [2024-01-31 16:09:14,932 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT (65 of 68 remaining) [2024-01-31 16:09:14,935 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (64 of 68 remaining) [2024-01-31 16:09:14,935 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err3ASSERT_VIOLATIONWITNESS_INVARIANT (63 of 68 remaining) [2024-01-31 16:09:14,935 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT (62 of 68 remaining) [2024-01-31 16:09:14,936 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err5ASSERT_VIOLATIONWITNESS_INVARIANT (61 of 68 remaining) [2024-01-31 16:09:14,936 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err6ASSERT_VIOLATIONWITNESS_INVARIANT (60 of 68 remaining) [2024-01-31 16:09:14,936 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT (59 of 68 remaining) [2024-01-31 16:09:14,936 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err8ASSERT_VIOLATIONWITNESS_INVARIANT (58 of 68 remaining) [2024-01-31 16:09:14,936 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT (57 of 68 remaining) [2024-01-31 16:09:14,936 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err10ASSERT_VIOLATIONWITNESS_INVARIANT (56 of 68 remaining) [2024-01-31 16:09:14,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err11ASSERT_VIOLATIONWITNESS_INVARIANT (55 of 68 remaining) [2024-01-31 16:09:14,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err12ASSERT_VIOLATIONWITNESS_INVARIANT (54 of 68 remaining) [2024-01-31 16:09:14,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err13ASSERT_VIOLATIONWITNESS_INVARIANT (53 of 68 remaining) [2024-01-31 16:09:14,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (52 of 68 remaining) [2024-01-31 16:09:14,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (51 of 68 remaining) [2024-01-31 16:09:14,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (50 of 68 remaining) [2024-01-31 16:09:14,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (49 of 68 remaining) [2024-01-31 16:09:14,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (48 of 68 remaining) [2024-01-31 16:09:14,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (47 of 68 remaining) [2024-01-31 16:09:14,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (46 of 68 remaining) [2024-01-31 16:09:14,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (45 of 68 remaining) [2024-01-31 16:09:14,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (44 of 68 remaining) [2024-01-31 16:09:14,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (43 of 68 remaining) [2024-01-31 16:09:14,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (42 of 68 remaining) [2024-01-31 16:09:14,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (41 of 68 remaining) [2024-01-31 16:09:14,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (40 of 68 remaining) [2024-01-31 16:09:14,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (39 of 68 remaining) [2024-01-31 16:09:14,939 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 68 remaining) [2024-01-31 16:09:14,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 68 remaining) [2024-01-31 16:09:14,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 68 remaining) [2024-01-31 16:09:14,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 68 remaining) [2024-01-31 16:09:14,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 68 remaining) [2024-01-31 16:09:14,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 68 remaining) [2024-01-31 16:09:14,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 68 remaining) [2024-01-31 16:09:14,940 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 68 remaining) [2024-01-31 16:09:14,941 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (30 of 68 remaining) [2024-01-31 16:09:14,941 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (29 of 68 remaining) [2024-01-31 16:09:14,941 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 68 remaining) [2024-01-31 16:09:14,941 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 68 remaining) [2024-01-31 16:09:14,941 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 68 remaining) [2024-01-31 16:09:14,941 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 68 remaining) [2024-01-31 16:09:14,941 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err3ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 68 remaining) [2024-01-31 16:09:14,942 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 68 remaining) [2024-01-31 16:09:14,942 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err5ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 68 remaining) [2024-01-31 16:09:14,942 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err6ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 68 remaining) [2024-01-31 16:09:14,942 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 68 remaining) [2024-01-31 16:09:14,942 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err8ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 68 remaining) [2024-01-31 16:09:14,942 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 68 remaining) [2024-01-31 16:09:14,943 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err10ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 68 remaining) [2024-01-31 16:09:14,943 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err11ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 68 remaining) [2024-01-31 16:09:14,943 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err12ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 68 remaining) [2024-01-31 16:09:14,943 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err13ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 68 remaining) [2024-01-31 16:09:14,943 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 68 remaining) [2024-01-31 16:09:14,943 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 68 remaining) [2024-01-31 16:09:14,943 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 68 remaining) [2024-01-31 16:09:14,944 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 68 remaining) [2024-01-31 16:09:14,944 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 68 remaining) [2024-01-31 16:09:14,944 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 68 remaining) [2024-01-31 16:09:14,944 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 68 remaining) [2024-01-31 16:09:14,944 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 68 remaining) [2024-01-31 16:09:14,944 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 68 remaining) [2024-01-31 16:09:14,944 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 68 remaining) [2024-01-31 16:09:14,945 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 68 remaining) [2024-01-31 16:09:14,945 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 68 remaining) [2024-01-31 16:09:14,945 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 68 remaining) [2024-01-31 16:09:14,945 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err13ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 68 remaining) [2024-01-31 16:09:14,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-01-31 16:09:14,946 INFO L445 BasicCegarLoop]: Path program histogram: [12, 11, 10, 10, 9, 8, 8, 7, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:09:14,952 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-31 16:09:14,953 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-31 16:09:15,015 INFO L503 ceAbstractionStarter]: Automizer considered 37 witness invariants [2024-01-31 16:09:15,015 INFO L504 ceAbstractionStarter]: WitnessConsidered=37 [2024-01-31 16:09:15,015 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 04:09:15 BasicIcfg [2024-01-31 16:09:15,015 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-31 16:09:15,019 INFO L158 Benchmark]: Toolchain (without parser) took 276598.43ms. Allocated memory was 197.1MB in the beginning and 3.7GB in the end (delta: 3.5GB). Free memory was 112.0MB in the beginning and 2.8GB in the end (delta: -2.6GB). Peak memory consumption was 882.9MB. Max. memory is 16.1GB. [2024-01-31 16:09:15,020 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 102.8MB. Free memory was 64.9MB in the beginning and 64.8MB in the end (delta: 117.5kB). There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 16:09:15,020 INFO L158 Benchmark]: Witness Parser took 0.20ms. Allocated memory is still 197.1MB. Free memory is still 127.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 16:09:15,020 INFO L158 Benchmark]: CACSL2BoogieTranslator took 971.74ms. Allocated memory is still 197.1MB. Free memory was 111.8MB in the beginning and 97.9MB in the end (delta: 13.9MB). Peak memory consumption was 15.8MB. Max. memory is 16.1GB. [2024-01-31 16:09:15,020 INFO L158 Benchmark]: Boogie Procedure Inliner took 94.59ms. Allocated memory is still 197.1MB. Free memory was 97.9MB in the beginning and 95.1MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-01-31 16:09:15,020 INFO L158 Benchmark]: Boogie Preprocessor took 102.70ms. Allocated memory is still 197.1MB. Free memory was 95.1MB in the beginning and 92.2MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-31 16:09:15,021 INFO L158 Benchmark]: RCFGBuilder took 955.88ms. Allocated memory is still 197.1MB. Free memory was 92.2MB in the beginning and 114.5MB in the end (delta: -22.3MB). Peak memory consumption was 38.0MB. Max. memory is 16.1GB. [2024-01-31 16:09:15,021 INFO L158 Benchmark]: TraceAbstraction took 274466.08ms. Allocated memory was 197.1MB in the beginning and 3.7GB in the end (delta: 3.5GB). Free memory was 113.4MB in the beginning and 2.8GB in the end (delta: -2.6GB). Peak memory consumption was 881.6MB. Max. memory is 16.1GB. [2024-01-31 16:09:15,022 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 102.8MB. Free memory was 64.9MB in the beginning and 64.8MB in the end (delta: 117.5kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.20ms. Allocated memory is still 197.1MB. Free memory is still 127.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 971.74ms. Allocated memory is still 197.1MB. Free memory was 111.8MB in the beginning and 97.9MB in the end (delta: 13.9MB). Peak memory consumption was 15.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 94.59ms. Allocated memory is still 197.1MB. Free memory was 97.9MB in the beginning and 95.1MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 102.70ms. Allocated memory is still 197.1MB. Free memory was 95.1MB in the beginning and 92.2MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 955.88ms. Allocated memory is still 197.1MB. Free memory was 92.2MB in the beginning and 114.5MB in the end (delta: -22.3MB). Peak memory consumption was 38.0MB. Max. memory is 16.1GB. * TraceAbstraction took 274466.08ms. Allocated memory was 197.1MB in the beginning and 3.7GB in the end (delta: 3.5GB). Free memory was 113.4MB in the beginning and 2.8GB in the end (delta: -2.6GB). Peak memory consumption was 881.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 775]: invariant of correctness witness can be violated invariant of correctness witness can be violated We found a FailurePath: [L708] 0 int __unbuffered_cnt = 0; [L710] 0 int __unbuffered_p0_EAX = 0; [L712] 0 int __unbuffered_p1_EAX = 0; [L713] 0 _Bool main$tmp_guard0; [L714] 0 _Bool main$tmp_guard1; [L716] 0 int x = 0; [L718] 0 int y = 0; [L764] 0 pthread_t t2625; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, main$tmp_guard0=0, main$tmp_guard1=0, t2625={5:0}, x=0, y=0] [L765] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_cnt],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]]]]] [L765] FCALL, FORK 0 pthread_create(&t2625, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t2625={5:0}, x=0, y=0] [L766] 0 pthread_t t2626; [L767] FCALL, FORK 0 pthread_create(&t2626, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t2625={5:0}, t2626={3:0}, x=0, y=0] [L721] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0] [L722] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] [L722] 1 y = 1 [L723] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=1] [L724] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=1] [L725] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=1] [L726] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=1] [L738] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=1] [L739] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] [L739] 2 x = 1 [L740] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L741] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L742] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L727] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] [L727] 1 __unbuffered_p0_EAX = x [L728] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=1, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L729] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=1, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L730] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=1, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L731] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=1, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L743] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=1, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L744] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] [L744] 2 __unbuffered_p1_EAX = y [L745] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=1, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L746] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=1, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L747] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=1, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L732] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] [L732] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L733] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IntegerLiteral[1],IdentifierExpression[__unbuffered_cnt]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=1, __unbuffered_p0_EAX=1, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L748] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=1, __unbuffered_p0_EAX=1, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L749] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] [L749] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L750] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IntegerLiteral[1],IdentifierExpression[__unbuffered_cnt]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=2, __unbuffered_p0_EAX=1, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L769] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] [L769] 0 main$tmp_guard0 = __unbuffered_cnt == 2 [L770] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=2, __unbuffered_p0_EAX=1, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t2625={5:0}, t2626={3:0}, x=1, y=1] [L771] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L771] RET 0 assume_abort_if_not(main$tmp_guard0) [L773] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=2, __unbuffered_p0_EAX=1, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t2625={5:0}, t2626={3:0}, x=1, y=1] [L775] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=2, __unbuffered_p0_EAX=1, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t2625={5:0}, t2626={3:0}, x=1, y=1] - UnprovableResult [Line: 721]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 722]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 723]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 724]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 725]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 726]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 727]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 728]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 729]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 730]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 731]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 732]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 733]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 734]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 738]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 739]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 740]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 741]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 742]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 743]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 744]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 745]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 746]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 747]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 748]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 749]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 750]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 751]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 765]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 769]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 770]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 773]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 776]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 765]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 767]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 137 locations, 68 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 274.2s, OverallIterations: 164, TraceHistogramMax: 1, PathProgramHistogramMax: 12, EmptinessCheckTime: 0.0s, AutomataDifference: 231.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14518 SdHoareTripleChecker+Valid, 33.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13209 mSDsluCounter, 3440 SdHoareTripleChecker+Invalid, 28.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2948 mSDsCounter, 2539 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 44534 IncrementalHoareTripleChecker+Invalid, 47073 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2539 mSolverCounterUnsat, 492 mSDtfsCounter, 44534 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1181 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 1148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 677 ImplicationChecksByTransitivity, 14.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11506occurred in iteration=146, InterpolantAutomatonStates: 1256, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 40.0s InterpolantComputationTime, 3435 NumberOfCodeBlocks, 3435 NumberOfCodeBlocksAsserted, 164 NumberOfCheckSat, 3240 ConstructedInterpolants, 0 QuantifiedInterpolants, 84851 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 163 InterpolantComputations, 163 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-01-31 16:09:15,072 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE