./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.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/safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3d25acf6 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-dev-3d25acf-m [2024-01-30 14:17:12,368 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-30 14:17:12,431 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-30 14:17:12,435 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-30 14:17:12,435 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-30 14:17:12,459 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-30 14:17:12,460 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-30 14:17:12,460 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-30 14:17:12,461 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-30 14:17:12,464 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-30 14:17:12,464 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-30 14:17:12,464 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-30 14:17:12,465 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-30 14:17:12,466 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-30 14:17:12,466 INFO L153 SettingsManager]: * Use SBE=true [2024-01-30 14:17:12,467 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-30 14:17:12,467 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-30 14:17:12,467 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-30 14:17:12,467 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-30 14:17:12,467 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-30 14:17:12,468 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-30 14:17:12,468 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-30 14:17:12,468 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-30 14:17:12,469 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-30 14:17:12,469 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-30 14:17:12,469 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-30 14:17:12,469 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-30 14:17:12,470 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-30 14:17:12,470 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-30 14:17:12,470 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-30 14:17:12,471 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-30 14:17:12,471 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-30 14:17:12,472 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-30 14:17:12,472 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-30 14:17:12,472 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-30 14:17:12,472 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-30 14:17:12,473 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-30 14:17:12,473 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-30 14:17:12,473 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-30 14:17:12,473 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-30 14:17:12,473 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-30 14:17:12,474 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-30 14:17:12,474 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-30 14:17:12,474 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-30 14:17:12,689 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-30 14:17:12,710 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-30 14:17:12,712 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-30 14:17:12,713 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-30 14:17:12,714 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-30 14:17:12,715 INFO L431 ainManager$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/safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.yml/witness.yml [2024-01-30 14:17:12,938 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-30 14:17:12,938 INFO L274 PluginConnector]: CDTParser initialized [2024-01-30 14:17:12,940 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-01-30 14:17:14,008 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-30 14:17:14,314 INFO L384 CDTParser]: Found 1 translation units. [2024-01-30 14:17:14,314 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-01-30 14:17:14,329 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86fb0f751/18075170bb4b43e5b149a16b67abffd5/FLAGaa558a8d0 [2024-01-30 14:17:14,675 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86fb0f751/18075170bb4b43e5b149a16b67abffd5 [2024-01-30 14:17:14,675 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-30 14:17:14,677 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-30 14:17:14,679 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-30 14:17:14,679 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-30 14:17:14,683 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-30 14:17:14,684 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 30.01 02:17:12" (1/2) ... [2024-01-30 14:17:14,684 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43ef64d5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:17:14, skipping insertion in model container [2024-01-30 14:17:14,685 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 30.01 02:17:12" (1/2) ... [2024-01-30 14:17:14,686 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5ec42d0a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 30.01 02:17:14, skipping insertion in model container [2024-01-30 14:17:14,686 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 02:17:14" (2/2) ... [2024-01-30 14:17:14,686 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43ef64d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:17:14, skipping insertion in model container [2024-01-30 14:17:14,687 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.01 02:17:14" (2/2) ... [2024-01-30 14:17:14,687 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-30 14:17:14,864 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-30 14:17:14,866 INFO L98 nessWitnessExtractor]: Location invariant before [L721-L721] (unsigned long )arg == 0UL [2024-01-30 14:17:14,866 INFO L98 nessWitnessExtractor]: Location invariant before [L732-L732] (unsigned long )arg == 0UL [2024-01-30 14:17:14,866 INFO L98 nessWitnessExtractor]: Location invariant before [L723-L723] (((((((((((((((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) [2024-01-30 14:17:14,866 INFO L98 nessWitnessExtractor]: Location invariant before [L729-L729] (unsigned long )arg == 0UL [2024-01-30 14:17:14,866 INFO L98 nessWitnessExtractor]: Location invariant before [L739-L739] (unsigned long )arg == 0UL [2024-01-30 14:17:14,866 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) [2024-01-30 14:17:14,867 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) [2024-01-30 14:17:14,867 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) [2024-01-30 14:17:14,867 INFO L98 nessWitnessExtractor]: Location invariant before [L724-L724] (unsigned long )arg == 0UL [2024-01-30 14:17:14,867 INFO L98 nessWitnessExtractor]: Location invariant before [L737-L737] (((((((((((((((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) [2024-01-30 14:17:14,867 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) [2024-01-30 14:17:14,867 INFO L98 nessWitnessExtractor]: Location invariant before [L18-L18] ((((expression == 0) && (0 <= expression)) && (expression <= 1)) && (expression == 0 || expression == 1)) && (expression == 1) [2024-01-30 14:17:14,867 INFO L98 nessWitnessExtractor]: Location invariant before [L742-L742] (unsigned long )arg == 0UL [2024-01-30 14:17:14,868 INFO L98 nessWitnessExtractor]: Location invariant before [L761-L761] ((((((__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) [2024-01-30 14:17:14,868 INFO L98 nessWitnessExtractor]: Location invariant before [L740-L740] (((((((((((((((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) [2024-01-30 14:17:14,868 INFO L98 nessWitnessExtractor]: Location invariant before [L726-L726] (((((((((((((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) [2024-01-30 14:17:14,868 INFO L98 nessWitnessExtractor]: Location invariant before [L743-L743] (((((((((((((((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) [2024-01-30 14:17:14,868 INFO L98 nessWitnessExtractor]: Location invariant before [L771-L771] ((((((((((((0 <= __unbuffered_cnt) && (0 <= __unbuffered_p1_EAX)) && (0 <= x)) && (0 <= y)) && (__unbuffered_p1_EAX <= 1)) && (x <= 1)) && (y <= 1)) && (__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) [2024-01-30 14:17:14,868 INFO L98 nessWitnessExtractor]: Location invariant before [L772-L772] ((((((((((((((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) [2024-01-30 14:17:14,868 INFO L98 nessWitnessExtractor]: Location invariant before [L731-L731] (((((((((((((((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) [2024-01-30 14:17:14,869 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) [2024-01-30 14:17:14,869 INFO L98 nessWitnessExtractor]: Location invariant before [L741-L741] (((((((((((((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) [2024-01-30 14:17:14,869 INFO L98 nessWitnessExtractor]: Location invariant before [L766-L766] ((((((((((((((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) [2024-01-30 14:17:14,870 INFO L98 nessWitnessExtractor]: Location invariant before [L727-L727] (unsigned long )arg == 0UL [2024-01-30 14:17:14,870 INFO L98 nessWitnessExtractor]: Location invariant before [L746-L746] (((((((((((((((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) [2024-01-30 14:17:14,870 INFO L98 nessWitnessExtractor]: Location invariant before [L765-L765] ((((((((((((((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) [2024-01-30 14:17:14,870 INFO L98 nessWitnessExtractor]: Location invariant before [L744-L744] (unsigned long )arg == 0UL [2024-01-30 14:17:14,870 INFO L98 nessWitnessExtractor]: Location invariant before [L747-L747] (unsigned long )arg == 0UL [2024-01-30 14:17:14,870 INFO L98 nessWitnessExtractor]: Location invariant before [L736-L736] (unsigned long )arg == 0UL [2024-01-30 14:17:14,870 INFO L98 nessWitnessExtractor]: Location invariant before [L738-L738] (((((((((((((((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) [2024-01-30 14:17:14,871 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) [2024-01-30 14:17:14,912 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-30 14:17:15,037 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/safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.i[1017,1030] [2024-01-30 14:17:15,156 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-30 14:17:15,165 INFO L202 MainTranslator]: Completed pre-run [2024-01-30 14:17:15,175 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/safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.i[1017,1030] [2024-01-30 14:17:15,176 WARN L424 MainDispatcher]: Unable to annotate void __VERIFIER_assert(int expression) { if (!expression) { ERROR: {reach_error();abort();} }; return; } 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 [2024-01-30 14:17:15,300 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-30 14:17:15,326 INFO L206 MainTranslator]: Completed translation [2024-01-30 14:17:15,326 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:17:15 WrapperNode [2024-01-30 14:17:15,326 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-30 14:17:15,328 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-30 14:17:15,328 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-30 14:17:15,328 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-30 14:17:15,334 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:17:15" (1/1) ... [2024-01-30 14:17:15,347 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:17:15" (1/1) ... [2024-01-30 14:17:15,375 INFO L138 Inliner]: procedures = 175, calls = 40, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 64 [2024-01-30 14:17:15,375 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-30 14:17:15,376 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-30 14:17:15,376 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-30 14:17:15,376 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-30 14:17:15,397 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:17:15" (1/1) ... [2024-01-30 14:17:15,398 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:17:15" (1/1) ... [2024-01-30 14:17:15,403 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:17:15" (1/1) ... [2024-01-30 14:17:15,417 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]. [2024-01-30 14:17:15,417 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:17:15" (1/1) ... [2024-01-30 14:17:15,418 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:17:15" (1/1) ... [2024-01-30 14:17:15,426 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:17:15" (1/1) ... [2024-01-30 14:17:15,428 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:17:15" (1/1) ... [2024-01-30 14:17:15,439 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:17:15" (1/1) ... [2024-01-30 14:17:15,446 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:17:15" (1/1) ... [2024-01-30 14:17:15,449 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-30 14:17:15,454 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-30 14:17:15,454 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-30 14:17:15,454 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-30 14:17:15,455 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:17:15" (1/1) ... [2024-01-30 14:17:15,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-30 14:17:15,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-30 14:17:15,483 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-30 14:17:15,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-30 14:17:15,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-30 14:17:15,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-30 14:17:15,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-30 14:17:15,544 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-30 14:17:15,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-30 14:17:15,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-30 14:17:15,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-30 14:17:15,547 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-01-30 14:17:15,547 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-01-30 14:17:15,548 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-01-30 14:17:15,548 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-01-30 14:17:15,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-30 14:17:15,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-30 14:17:15,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-30 14:17:15,548 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-30 14:17:15,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-30 14:17:15,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-30 14:17:15,550 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-30 14:17:15,655 INFO L244 CfgBuilder]: Building ICFG [2024-01-30 14:17:15,657 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-30 14:17:16,004 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-30 14:17:16,005 INFO L293 CfgBuilder]: Performing block encoding [2024-01-30 14:17:16,179 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-30 14:17:16,179 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-30 14:17:16,180 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 02:17:16 BoogieIcfgContainer [2024-01-30 14:17:16,181 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-30 14:17:16,183 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-30 14:17:16,184 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-30 14:17:16,186 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-30 14:17:16,187 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 30.01 02:17:12" (1/4) ... [2024-01-30 14:17:16,192 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26842d45 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 30.01 02:17:16, skipping insertion in model container [2024-01-30 14:17:16,192 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.01 02:17:14" (2/4) ... [2024-01-30 14:17:16,192 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26842d45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 02:17:16, skipping insertion in model container [2024-01-30 14:17:16,192 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.01 02:17:15" (3/4) ... [2024-01-30 14:17:16,192 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26842d45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.01 02:17:16, skipping insertion in model container [2024-01-30 14:17:16,192 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.01 02:17:16" (4/4) ... [2024-01-30 14:17:16,194 INFO L112 eAbstractionObserver]: Analyzing ICFG safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-01-30 14:17:16,207 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-30 14:17:16,207 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 31 error locations. [2024-01-30 14:17:16,207 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-30 14:17:16,324 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-30 14:17:16,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 68 transitions, 144 flow [2024-01-30 14:17:16,401 INFO L124 PetriNetUnfolderBase]: 1/66 cut-off events. [2024-01-30 14:17:16,401 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-30 14:17:16,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 66 events. 1/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 215 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2024-01-30 14:17:16,406 INFO L82 GeneralOperation]: Start removeDead. Operand has 74 places, 68 transitions, 144 flow [2024-01-30 14:17:16,412 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 66 transitions, 138 flow [2024-01-30 14:17:16,425 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-30 14:17:16,431 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;@433d096f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-30 14:17:16,432 INFO L358 AbstractCegarLoop]: Starting to check reachability of 57 error locations. [2024-01-30 14:17:16,434 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-30 14:17:16,435 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-30 14:17:16,435 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-30 14:17:16,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:17:16,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-30 14:17:16,437 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:17:16,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:17:16,442 INFO L85 PathProgramCache]: Analyzing trace with hash 9989, now seen corresponding path program 1 times [2024-01-30 14:17:16,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:17:16,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994016051] [2024-01-30 14:17:16,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:17:16,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:17:16,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:17:16,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:17:16,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:17:16,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994016051] [2024-01-30 14:17:16,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994016051] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:17:16,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:17:16,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-30 14:17:16,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658807392] [2024-01-30 14:17:16,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:17:16,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-30 14:17:16,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:17:16,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-30 14:17:16,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-30 14:17:16,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 68 [2024-01-30 14:17:16,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 66 transitions, 138 flow. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:16,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:17:16,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 68 [2024-01-30 14:17:16,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:17:17,440 INFO L124 PetriNetUnfolderBase]: 1643/3194 cut-off events. [2024-01-30 14:17:17,441 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-01-30 14:17:17,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5857 conditions, 3194 events. 1643/3194 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 24326 event pairs, 1001 based on Foata normal form. 100/2058 useless extension candidates. Maximal degree in co-relation 5845. Up to 2517 conditions per place. [2024-01-30 14:17:17,468 INFO L140 encePairwiseOnDemand]: 53/68 looper letters, 42 selfloop transitions, 3 changer transitions 0/68 dead transitions. [2024-01-30 14:17:17,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 68 transitions, 235 flow [2024-01-30 14:17:17,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-30 14:17:17,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-30 14:17:17,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 137 transitions. [2024-01-30 14:17:17,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6715686274509803 [2024-01-30 14:17:17,481 INFO L175 Difference]: Start difference. First operand has 72 places, 66 transitions, 138 flow. Second operand 3 states and 137 transitions. [2024-01-30 14:17:17,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 68 transitions, 235 flow [2024-01-30 14:17:17,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 68 transitions, 232 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:17:17,490 INFO L231 Difference]: Finished difference. Result has 64 places, 58 transitions, 137 flow [2024-01-30 14:17:17,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=137, PETRI_PLACES=64, PETRI_TRANSITIONS=58} [2024-01-30 14:17:17,495 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -8 predicate places. [2024-01-30 14:17:17,496 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 58 transitions, 137 flow [2024-01-30 14:17:17,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:17,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:17:17,496 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-30 14:17:17,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-30 14:17:17,497 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:17:17,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:17:17,498 INFO L85 PathProgramCache]: Analyzing trace with hash 297970053, now seen corresponding path program 1 times [2024-01-30 14:17:17,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:17:17,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237139019] [2024-01-30 14:17:17,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:17:17,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:17:17,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:17:17,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:17:17,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:17:17,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237139019] [2024-01-30 14:17:17,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237139019] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:17:17,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:17:17,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:17:17,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453943266] [2024-01-30 14:17:17,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:17:17,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:17:17,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:17:17,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:17:17,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:17:17,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 68 [2024-01-30 14:17:17,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 58 transitions, 137 flow. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:17,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:17:17,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 68 [2024-01-30 14:17:17,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:17:18,077 INFO L124 PetriNetUnfolderBase]: 1780/3358 cut-off events. [2024-01-30 14:17:18,077 INFO L125 PetriNetUnfolderBase]: For 286/286 co-relation queries the response was YES. [2024-01-30 14:17:18,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6611 conditions, 3358 events. 1780/3358 cut-off events. For 286/286 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 25301 event pairs, 980 based on Foata normal form. 384/2775 useless extension candidates. Maximal degree in co-relation 6598. Up to 2714 conditions per place. [2024-01-30 14:17:18,095 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 55 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2024-01-30 14:17:18,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 74 transitions, 292 flow [2024-01-30 14:17:18,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:17:18,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:17:18,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 140 transitions. [2024-01-30 14:17:18,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5147058823529411 [2024-01-30 14:17:18,101 INFO L175 Difference]: Start difference. First operand has 64 places, 58 transitions, 137 flow. Second operand 4 states and 140 transitions. [2024-01-30 14:17:18,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 74 transitions, 292 flow [2024-01-30 14:17:18,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 74 transitions, 288 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-30 14:17:18,104 INFO L231 Difference]: Finished difference. Result has 61 places, 53 transitions, 128 flow [2024-01-30 14:17:18,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=128, PETRI_PLACES=61, PETRI_TRANSITIONS=53} [2024-01-30 14:17:18,105 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -11 predicate places. [2024-01-30 14:17:18,105 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 53 transitions, 128 flow [2024-01-30 14:17:18,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:18,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:17:18,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-01-30 14:17:18,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-30 14:17:18,106 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:17:18,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:17:18,107 INFO L85 PathProgramCache]: Analyzing trace with hash 647137400, now seen corresponding path program 1 times [2024-01-30 14:17:18,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:17:18,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483145757] [2024-01-30 14:17:18,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:17:18,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:17:18,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:17:18,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:17:18,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:17:18,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483145757] [2024-01-30 14:17:18,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483145757] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:17:18,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:17:18,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:17:18,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886829542] [2024-01-30 14:17:18,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:17:18,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-30 14:17:18,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:17:18,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-30 14:17:18,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-01-30 14:17:18,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 68 [2024-01-30 14:17:18,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 53 transitions, 128 flow. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:18,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:17:18,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 68 [2024-01-30 14:17:18,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:17:18,862 INFO L124 PetriNetUnfolderBase]: 2412/4493 cut-off events. [2024-01-30 14:17:18,863 INFO L125 PetriNetUnfolderBase]: For 430/430 co-relation queries the response was YES. [2024-01-30 14:17:18,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8876 conditions, 4493 events. 2412/4493 cut-off events. For 430/430 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 32897 event pairs, 1501 based on Foata normal form. 14/3283 useless extension candidates. Maximal degree in co-relation 8862. Up to 3689 conditions per place. [2024-01-30 14:17:18,888 INFO L140 encePairwiseOnDemand]: 62/68 looper letters, 54 selfloop transitions, 5 changer transitions 0/72 dead transitions. [2024-01-30 14:17:18,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 72 transitions, 292 flow [2024-01-30 14:17:18,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:17:18,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:17:18,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 121 transitions. [2024-01-30 14:17:18,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44485294117647056 [2024-01-30 14:17:18,890 INFO L175 Difference]: Start difference. First operand has 61 places, 53 transitions, 128 flow. Second operand 4 states and 121 transitions. [2024-01-30 14:17:18,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 72 transitions, 292 flow [2024-01-30 14:17:18,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 72 transitions, 288 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:17:18,892 INFO L231 Difference]: Finished difference. Result has 64 places, 55 transitions, 153 flow [2024-01-30 14:17:18,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=153, PETRI_PLACES=64, PETRI_TRANSITIONS=55} [2024-01-30 14:17:18,893 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -8 predicate places. [2024-01-30 14:17:18,893 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 55 transitions, 153 flow [2024-01-30 14:17:18,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:18,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:17:18,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:17:18,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-30 14:17:18,894 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:17:18,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:17:18,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1414309396, now seen corresponding path program 1 times [2024-01-30 14:17:18,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:17:18,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102940309] [2024-01-30 14:17:18,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:17:18,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:17:18,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:17:18,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:17:18,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:17:18,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102940309] [2024-01-30 14:17:18,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102940309] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:17:18,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:17:18,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:17:18,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258780903] [2024-01-30 14:17:18,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:17:18,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:17:18,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:17:18,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:17:18,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:17:18,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 68 [2024-01-30 14:17:18,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 55 transitions, 153 flow. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:18,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:17:18,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 68 [2024-01-30 14:17:18,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:17:19,347 INFO L124 PetriNetUnfolderBase]: 1779/3266 cut-off events. [2024-01-30 14:17:19,347 INFO L125 PetriNetUnfolderBase]: For 486/501 co-relation queries the response was YES. [2024-01-30 14:17:19,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6712 conditions, 3266 events. 1779/3266 cut-off events. For 486/501 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 23905 event pairs, 387 based on Foata normal form. 401/2866 useless extension candidates. Maximal degree in co-relation 6696. Up to 2722 conditions per place. [2024-01-30 14:17:19,401 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 59 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2024-01-30 14:17:19,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 74 transitions, 327 flow [2024-01-30 14:17:19,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:17:19,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:17:19,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 143 transitions. [2024-01-30 14:17:19,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5257352941176471 [2024-01-30 14:17:19,405 INFO L175 Difference]: Start difference. First operand has 64 places, 55 transitions, 153 flow. Second operand 4 states and 143 transitions. [2024-01-30 14:17:19,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 74 transitions, 327 flow [2024-01-30 14:17:19,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 74 transitions, 315 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:17:19,407 INFO L231 Difference]: Finished difference. Result has 60 places, 50 transitions, 139 flow [2024-01-30 14:17:19,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=139, PETRI_PLACES=60, PETRI_TRANSITIONS=50} [2024-01-30 14:17:19,408 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -12 predicate places. [2024-01-30 14:17:19,408 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 50 transitions, 139 flow [2024-01-30 14:17:19,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:19,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:17:19,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:17:19,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-30 14:17:19,409 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:17:19,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:17:19,410 INFO L85 PathProgramCache]: Analyzing trace with hash -893917945, now seen corresponding path program 1 times [2024-01-30 14:17:19,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:17:19,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597370329] [2024-01-30 14:17:19,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:17:19,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:17:19,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:17:19,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:17:19,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:17:19,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597370329] [2024-01-30 14:17:19,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597370329] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:17:19,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:17:19,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:17:19,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781794845] [2024-01-30 14:17:19,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:17:19,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-30 14:17:19,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:17:19,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-30 14:17:19,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-01-30 14:17:19,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 68 [2024-01-30 14:17:19,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 50 transitions, 139 flow. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:19,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:17:19,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 68 [2024-01-30 14:17:19,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:17:20,007 INFO L124 PetriNetUnfolderBase]: 2427/4402 cut-off events. [2024-01-30 14:17:20,008 INFO L125 PetriNetUnfolderBase]: For 630/645 co-relation queries the response was YES. [2024-01-30 14:17:20,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9057 conditions, 4402 events. 2427/4402 cut-off events. For 630/645 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 30461 event pairs, 1713 based on Foata normal form. 21/3389 useless extension candidates. Maximal degree in co-relation 9042. Up to 3835 conditions per place. [2024-01-30 14:17:20,034 INFO L140 encePairwiseOnDemand]: 62/68 looper letters, 48 selfloop transitions, 6 changer transitions 0/63 dead transitions. [2024-01-30 14:17:20,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 63 transitions, 282 flow [2024-01-30 14:17:20,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:17:20,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:17:20,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 115 transitions. [2024-01-30 14:17:20,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4227941176470588 [2024-01-30 14:17:20,035 INFO L175 Difference]: Start difference. First operand has 60 places, 50 transitions, 139 flow. Second operand 4 states and 115 transitions. [2024-01-30 14:17:20,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 63 transitions, 282 flow [2024-01-30 14:17:20,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 63 transitions, 276 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:17:20,039 INFO L231 Difference]: Finished difference. Result has 63 places, 52 transitions, 168 flow [2024-01-30 14:17:20,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=168, PETRI_PLACES=63, PETRI_TRANSITIONS=52} [2024-01-30 14:17:20,041 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -9 predicate places. [2024-01-30 14:17:20,041 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 52 transitions, 168 flow [2024-01-30 14:17:20,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:20,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:17:20,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:17:20,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-30 14:17:20,042 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:17:20,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:17:20,042 INFO L85 PathProgramCache]: Analyzing trace with hash 291309534, now seen corresponding path program 1 times [2024-01-30 14:17:20,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:17:20,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874007417] [2024-01-30 14:17:20,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:17:20,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:17:20,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:17:20,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:17:20,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:17:20,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874007417] [2024-01-30 14:17:20,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874007417] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:17:20,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:17:20,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-30 14:17:20,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515102098] [2024-01-30 14:17:20,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:17:20,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-30 14:17:20,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:17:20,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-30 14:17:20,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-30 14:17:20,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:17:20,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 52 transitions, 168 flow. Second operand has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:20,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:17:20,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:17:20,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:17:20,772 INFO L124 PetriNetUnfolderBase]: 2169/3804 cut-off events. [2024-01-30 14:17:20,773 INFO L125 PetriNetUnfolderBase]: For 749/755 co-relation queries the response was YES. [2024-01-30 14:17:20,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8227 conditions, 3804 events. 2169/3804 cut-off events. For 749/755 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 25742 event pairs, 1464 based on Foata normal form. 30/2982 useless extension candidates. Maximal degree in co-relation 8209. Up to 3361 conditions per place. [2024-01-30 14:17:20,793 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 63 selfloop transitions, 10 changer transitions 0/82 dead transitions. [2024-01-30 14:17:20,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 82 transitions, 395 flow [2024-01-30 14:17:20,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-30 14:17:20,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-30 14:17:20,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 168 transitions. [2024-01-30 14:17:20,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4117647058823529 [2024-01-30 14:17:20,795 INFO L175 Difference]: Start difference. First operand has 63 places, 52 transitions, 168 flow. Second operand 6 states and 168 transitions. [2024-01-30 14:17:20,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 82 transitions, 395 flow [2024-01-30 14:17:20,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 82 transitions, 389 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-30 14:17:20,797 INFO L231 Difference]: Finished difference. Result has 71 places, 60 transitions, 240 flow [2024-01-30 14:17:20,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=240, PETRI_PLACES=71, PETRI_TRANSITIONS=60} [2024-01-30 14:17:20,798 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -1 predicate places. [2024-01-30 14:17:20,798 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 60 transitions, 240 flow [2024-01-30 14:17:20,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:20,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:17:20,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:17:20,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-30 14:17:20,799 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:17:20,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:17:20,799 INFO L85 PathProgramCache]: Analyzing trace with hash 580989179, now seen corresponding path program 1 times [2024-01-30 14:17:20,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:17:20,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466650515] [2024-01-30 14:17:20,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:17:20,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:17:20,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:17:20,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:17:20,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:17:20,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466650515] [2024-01-30 14:17:20,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466650515] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:17:20,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:17:20,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-30 14:17:20,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019296268] [2024-01-30 14:17:20,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:17:20,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-30 14:17:20,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:17:20,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-30 14:17:20,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-30 14:17:20,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-01-30 14:17:20,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 60 transitions, 240 flow. Second operand has 6 states, 6 states have (on average 27.5) internal successors, (165), 6 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:20,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:17:20,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-01-30 14:17:20,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:17:21,234 INFO L124 PetriNetUnfolderBase]: 1344/2525 cut-off events. [2024-01-30 14:17:21,235 INFO L125 PetriNetUnfolderBase]: For 1087/1096 co-relation queries the response was YES. [2024-01-30 14:17:21,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5861 conditions, 2525 events. 1344/2525 cut-off events. For 1087/1096 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 17166 event pairs, 990 based on Foata normal form. 33/2050 useless extension candidates. Maximal degree in co-relation 5838. Up to 2127 conditions per place. [2024-01-30 14:17:21,252 INFO L140 encePairwiseOnDemand]: 62/68 looper letters, 51 selfloop transitions, 7 changer transitions 0/74 dead transitions. [2024-01-30 14:17:21,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 74 transitions, 397 flow [2024-01-30 14:17:21,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:17:21,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:17:21,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 154 transitions. [2024-01-30 14:17:21,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5661764705882353 [2024-01-30 14:17:21,254 INFO L175 Difference]: Start difference. First operand has 71 places, 60 transitions, 240 flow. Second operand 4 states and 154 transitions. [2024-01-30 14:17:21,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 74 transitions, 397 flow [2024-01-30 14:17:21,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 74 transitions, 397 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-30 14:17:21,257 INFO L231 Difference]: Finished difference. Result has 76 places, 64 transitions, 290 flow [2024-01-30 14:17:21,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=290, PETRI_PLACES=76, PETRI_TRANSITIONS=64} [2024-01-30 14:17:21,258 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 4 predicate places. [2024-01-30 14:17:21,258 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 64 transitions, 290 flow [2024-01-30 14:17:21,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.5) internal successors, (165), 6 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:21,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:17:21,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:17:21,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-30 14:17:21,259 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:17:21,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:17:21,259 INFO L85 PathProgramCache]: Analyzing trace with hash 861788781, now seen corresponding path program 1 times [2024-01-30 14:17:21,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:17:21,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716357029] [2024-01-30 14:17:21,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:17:21,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:17:21,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:17:21,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:17:21,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:17:21,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716357029] [2024-01-30 14:17:21,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716357029] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:17:21,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:17:21,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-30 14:17:21,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645616625] [2024-01-30 14:17:21,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:17:21,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-30 14:17:21,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:17:21,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-30 14:17:21,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-30 14:17:21,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:17:21,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 64 transitions, 290 flow. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:21,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:17:21,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:17:21,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:17:21,979 INFO L124 PetriNetUnfolderBase]: 1870/3350 cut-off events. [2024-01-30 14:17:21,979 INFO L125 PetriNetUnfolderBase]: For 1962/1980 co-relation queries the response was YES. [2024-01-30 14:17:21,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8262 conditions, 3350 events. 1870/3350 cut-off events. For 1962/1980 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 22310 event pairs, 1288 based on Foata normal form. 27/2879 useless extension candidates. Maximal degree in co-relation 8235. Up to 2925 conditions per place. [2024-01-30 14:17:22,001 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 61 selfloop transitions, 11 changer transitions 0/82 dead transitions. [2024-01-30 14:17:22,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 82 transitions, 486 flow [2024-01-30 14:17:22,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-30 14:17:22,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-30 14:17:22,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 160 transitions. [2024-01-30 14:17:22,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39215686274509803 [2024-01-30 14:17:22,003 INFO L175 Difference]: Start difference. First operand has 76 places, 64 transitions, 290 flow. Second operand 6 states and 160 transitions. [2024-01-30 14:17:22,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 82 transitions, 486 flow [2024-01-30 14:17:22,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 82 transitions, 482 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-01-30 14:17:22,009 INFO L231 Difference]: Finished difference. Result has 83 places, 66 transitions, 336 flow [2024-01-30 14:17:22,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=336, PETRI_PLACES=83, PETRI_TRANSITIONS=66} [2024-01-30 14:17:22,010 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 11 predicate places. [2024-01-30 14:17:22,010 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 66 transitions, 336 flow [2024-01-30 14:17:22,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:22,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:17:22,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:17:22,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-30 14:17:22,011 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:17:22,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:17:22,012 INFO L85 PathProgramCache]: Analyzing trace with hash 381735452, now seen corresponding path program 1 times [2024-01-30 14:17:22,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:17:22,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674584736] [2024-01-30 14:17:22,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:17:22,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:17:22,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:17:22,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:17:22,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:17:22,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674584736] [2024-01-30 14:17:22,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674584736] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:17:22,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:17:22,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-30 14:17:22,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743768201] [2024-01-30 14:17:22,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:17:22,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-30 14:17:22,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:17:22,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-30 14:17:22,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-30 14:17:22,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:17:22,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 66 transitions, 336 flow. Second operand has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:22,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:17:22,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:17:22,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:17:22,706 INFO L124 PetriNetUnfolderBase]: 1880/3365 cut-off events. [2024-01-30 14:17:22,706 INFO L125 PetriNetUnfolderBase]: For 2176/2185 co-relation queries the response was YES. [2024-01-30 14:17:22,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8545 conditions, 3365 events. 1880/3365 cut-off events. For 2176/2185 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 22256 event pairs, 1273 based on Foata normal form. 15/2969 useless extension candidates. Maximal degree in co-relation 8514. Up to 2935 conditions per place. [2024-01-30 14:17:22,732 INFO L140 encePairwiseOnDemand]: 62/68 looper letters, 63 selfloop transitions, 11 changer transitions 0/84 dead transitions. [2024-01-30 14:17:22,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 84 transitions, 536 flow [2024-01-30 14:17:22,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-30 14:17:22,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-30 14:17:22,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 143 transitions. [2024-01-30 14:17:22,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42058823529411765 [2024-01-30 14:17:22,734 INFO L175 Difference]: Start difference. First operand has 83 places, 66 transitions, 336 flow. Second operand 5 states and 143 transitions. [2024-01-30 14:17:22,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 84 transitions, 536 flow [2024-01-30 14:17:22,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 84 transitions, 514 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-01-30 14:17:22,738 INFO L231 Difference]: Finished difference. Result has 85 places, 69 transitions, 362 flow [2024-01-30 14:17:22,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=362, PETRI_PLACES=85, PETRI_TRANSITIONS=69} [2024-01-30 14:17:22,739 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 13 predicate places. [2024-01-30 14:17:22,739 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 69 transitions, 362 flow [2024-01-30 14:17:22,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:22,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:17:22,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:17:22,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-30 14:17:22,740 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:17:22,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:17:22,740 INFO L85 PathProgramCache]: Analyzing trace with hash 62474830, now seen corresponding path program 2 times [2024-01-30 14:17:22,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:17:22,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162338712] [2024-01-30 14:17:22,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:17:22,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:17:22,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:17:22,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:17:22,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:17:22,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162338712] [2024-01-30 14:17:22,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162338712] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:17:22,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:17:22,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-30 14:17:22,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076929396] [2024-01-30 14:17:22,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:17:22,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-30 14:17:22,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:17:22,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-30 14:17:22,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-30 14:17:23,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:17:23,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 69 transitions, 362 flow. Second operand has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:23,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:17:23,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:17:23,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:17:23,370 INFO L124 PetriNetUnfolderBase]: 1870/3335 cut-off events. [2024-01-30 14:17:23,371 INFO L125 PetriNetUnfolderBase]: For 2314/2323 co-relation queries the response was YES. [2024-01-30 14:17:23,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8552 conditions, 3335 events. 1870/3335 cut-off events. For 2314/2323 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 22084 event pairs, 1284 based on Foata normal form. 15/2937 useless extension candidates. Maximal degree in co-relation 8520. Up to 2932 conditions per place. [2024-01-30 14:17:23,391 INFO L140 encePairwiseOnDemand]: 62/68 looper letters, 59 selfloop transitions, 13 changer transitions 0/82 dead transitions. [2024-01-30 14:17:23,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 82 transitions, 541 flow [2024-01-30 14:17:23,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-30 14:17:23,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-30 14:17:23,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 141 transitions. [2024-01-30 14:17:23,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147058823529412 [2024-01-30 14:17:23,393 INFO L175 Difference]: Start difference. First operand has 85 places, 69 transitions, 362 flow. Second operand 5 states and 141 transitions. [2024-01-30 14:17:23,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 82 transitions, 541 flow [2024-01-30 14:17:23,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 82 transitions, 517 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-01-30 14:17:23,397 INFO L231 Difference]: Finished difference. Result has 87 places, 70 transitions, 377 flow [2024-01-30 14:17:23,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=377, PETRI_PLACES=87, PETRI_TRANSITIONS=70} [2024-01-30 14:17:23,398 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 15 predicate places. [2024-01-30 14:17:23,398 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 70 transitions, 377 flow [2024-01-30 14:17:23,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:23,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:17:23,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:17:23,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-30 14:17:23,399 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:17:23,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:17:23,399 INFO L85 PathProgramCache]: Analyzing trace with hash -198331052, now seen corresponding path program 1 times [2024-01-30 14:17:23,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:17:23,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571213804] [2024-01-30 14:17:23,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:17:23,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:17:23,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:17:23,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:17:23,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:17:23,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571213804] [2024-01-30 14:17:23,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571213804] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:17:23,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:17:23,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-30 14:17:23,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086186167] [2024-01-30 14:17:23,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:17:23,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-30 14:17:23,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:17:23,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-30 14:17:23,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-30 14:17:23,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:17:23,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 70 transitions, 377 flow. Second operand has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:23,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:17:23,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:17:23,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:17:24,030 INFO L124 PetriNetUnfolderBase]: 1886/3390 cut-off events. [2024-01-30 14:17:24,030 INFO L125 PetriNetUnfolderBase]: For 2453/2483 co-relation queries the response was YES. [2024-01-30 14:17:24,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8737 conditions, 3390 events. 1886/3390 cut-off events. For 2453/2483 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 22777 event pairs, 1426 based on Foata normal form. 16/2976 useless extension candidates. Maximal degree in co-relation 8704. Up to 2938 conditions per place. [2024-01-30 14:17:24,056 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 67 selfloop transitions, 15 changer transitions 0/93 dead transitions. [2024-01-30 14:17:24,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 93 transitions, 621 flow [2024-01-30 14:17:24,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-30 14:17:24,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-30 14:17:24,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 164 transitions. [2024-01-30 14:17:24,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4019607843137255 [2024-01-30 14:17:24,058 INFO L175 Difference]: Start difference. First operand has 87 places, 70 transitions, 377 flow. Second operand 6 states and 164 transitions. [2024-01-30 14:17:24,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 93 transitions, 621 flow [2024-01-30 14:17:24,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 93 transitions, 612 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-30 14:17:24,062 INFO L231 Difference]: Finished difference. Result has 94 places, 76 transitions, 454 flow [2024-01-30 14:17:24,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=454, PETRI_PLACES=94, PETRI_TRANSITIONS=76} [2024-01-30 14:17:24,063 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 22 predicate places. [2024-01-30 14:17:24,064 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 76 transitions, 454 flow [2024-01-30 14:17:24,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:24,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:17:24,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:17:24,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-30 14:17:24,064 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:17:24,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:17:24,065 INFO L85 PathProgramCache]: Analyzing trace with hash -822195532, now seen corresponding path program 2 times [2024-01-30 14:17:24,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:17:24,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869112136] [2024-01-30 14:17:24,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:17:24,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:17:24,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:17:24,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:17:24,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:17:24,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869112136] [2024-01-30 14:17:24,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869112136] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:17:24,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:17:24,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-30 14:17:24,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189992633] [2024-01-30 14:17:24,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:17:24,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-30 14:17:24,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:17:24,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-30 14:17:24,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-30 14:17:24,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:17:24,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 76 transitions, 454 flow. Second operand has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:24,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:17:24,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:17:24,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:17:24,734 INFO L124 PetriNetUnfolderBase]: 1896/3406 cut-off events. [2024-01-30 14:17:24,735 INFO L125 PetriNetUnfolderBase]: For 2712/2749 co-relation queries the response was YES. [2024-01-30 14:17:24,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8908 conditions, 3406 events. 1896/3406 cut-off events. For 2712/2749 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 22949 event pairs, 1423 based on Foata normal form. 18/2997 useless extension candidates. Maximal degree in co-relation 8871. Up to 2947 conditions per place. [2024-01-30 14:17:24,757 INFO L140 encePairwiseOnDemand]: 62/68 looper letters, 65 selfloop transitions, 17 changer transitions 0/93 dead transitions. [2024-01-30 14:17:24,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 93 transitions, 673 flow [2024-01-30 14:17:24,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-30 14:17:24,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-30 14:17:24,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 144 transitions. [2024-01-30 14:17:24,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4235294117647059 [2024-01-30 14:17:24,758 INFO L175 Difference]: Start difference. First operand has 94 places, 76 transitions, 454 flow. Second operand 5 states and 144 transitions. [2024-01-30 14:17:24,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 93 transitions, 673 flow [2024-01-30 14:17:24,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 93 transitions, 659 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-01-30 14:17:24,764 INFO L231 Difference]: Finished difference. Result has 98 places, 78 transitions, 498 flow [2024-01-30 14:17:24,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=498, PETRI_PLACES=98, PETRI_TRANSITIONS=78} [2024-01-30 14:17:24,765 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 26 predicate places. [2024-01-30 14:17:24,765 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 78 transitions, 498 flow [2024-01-30 14:17:24,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:24,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:17:24,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:17:24,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-01-30 14:17:24,766 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:17:24,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:17:24,766 INFO L85 PathProgramCache]: Analyzing trace with hash -821389222, now seen corresponding path program 3 times [2024-01-30 14:17:24,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:17:24,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745043795] [2024-01-30 14:17:24,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:17:24,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:17:24,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:17:24,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:17:24,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:17:24,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745043795] [2024-01-30 14:17:24,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745043795] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:17:24,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:17:24,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-30 14:17:24,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237193345] [2024-01-30 14:17:24,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:17:24,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-30 14:17:24,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:17:24,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-30 14:17:24,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-30 14:17:24,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:17:24,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 78 transitions, 498 flow. Second operand has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:24,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:17:24,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:17:24,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:17:25,357 INFO L124 PetriNetUnfolderBase]: 1886/3398 cut-off events. [2024-01-30 14:17:25,357 INFO L125 PetriNetUnfolderBase]: For 2982/2997 co-relation queries the response was YES. [2024-01-30 14:17:25,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8906 conditions, 3398 events. 1886/3398 cut-off events. For 2982/2997 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 22907 event pairs, 1417 based on Foata normal form. 18/2990 useless extension candidates. Maximal degree in co-relation 8867. Up to 2944 conditions per place. [2024-01-30 14:17:25,377 INFO L140 encePairwiseOnDemand]: 62/68 looper letters, 63 selfloop transitions, 16 changer transitions 0/90 dead transitions. [2024-01-30 14:17:25,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 90 transitions, 684 flow [2024-01-30 14:17:25,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-30 14:17:25,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-30 14:17:25,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 140 transitions. [2024-01-30 14:17:25,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4117647058823529 [2024-01-30 14:17:25,379 INFO L175 Difference]: Start difference. First operand has 98 places, 78 transitions, 498 flow. Second operand 5 states and 140 transitions. [2024-01-30 14:17:25,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 90 transitions, 684 flow [2024-01-30 14:17:25,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 90 transitions, 662 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-01-30 14:17:25,383 INFO L231 Difference]: Finished difference. Result has 100 places, 78 transitions, 513 flow [2024-01-30 14:17:25,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=513, PETRI_PLACES=100, PETRI_TRANSITIONS=78} [2024-01-30 14:17:25,384 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 28 predicate places. [2024-01-30 14:17:25,384 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 78 transitions, 513 flow [2024-01-30 14:17:25,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:25,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:17:25,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:17:25,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-01-30 14:17:25,385 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:17:25,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:17:25,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1719891015, now seen corresponding path program 1 times [2024-01-30 14:17:25,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:17:25,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431543725] [2024-01-30 14:17:25,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:17:25,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:17:25,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:17:25,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:17:25,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:17:25,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431543725] [2024-01-30 14:17:25,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431543725] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:17:25,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:17:25,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-30 14:17:25,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136351216] [2024-01-30 14:17:25,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:17:25,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-30 14:17:25,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:17:25,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-30 14:17:25,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-30 14:17:25,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-01-30 14:17:25,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 78 transitions, 513 flow. Second operand has 7 states, 7 states have (on average 27.428571428571427) internal successors, (192), 7 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:25,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:17:25,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-01-30 14:17:25,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:17:25,939 INFO L124 PetriNetUnfolderBase]: 1267/2374 cut-off events. [2024-01-30 14:17:25,940 INFO L125 PetriNetUnfolderBase]: For 2708/2718 co-relation queries the response was YES. [2024-01-30 14:17:25,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6341 conditions, 2374 events. 1267/2374 cut-off events. For 2708/2718 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 15857 event pairs, 647 based on Foata normal form. 34/2119 useless extension candidates. Maximal degree in co-relation 6302. Up to 1885 conditions per place. [2024-01-30 14:17:25,956 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 65 selfloop transitions, 17 changer transitions 0/101 dead transitions. [2024-01-30 14:17:25,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 101 transitions, 753 flow [2024-01-30 14:17:25,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-30 14:17:25,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-30 14:17:25,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 194 transitions. [2024-01-30 14:17:25,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5705882352941176 [2024-01-30 14:17:25,960 INFO L175 Difference]: Start difference. First operand has 100 places, 78 transitions, 513 flow. Second operand 5 states and 194 transitions. [2024-01-30 14:17:25,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 101 transitions, 753 flow [2024-01-30 14:17:25,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 101 transitions, 717 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-01-30 14:17:25,969 INFO L231 Difference]: Finished difference. Result has 102 places, 82 transitions, 551 flow [2024-01-30 14:17:25,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=477, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=551, PETRI_PLACES=102, PETRI_TRANSITIONS=82} [2024-01-30 14:17:25,970 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 30 predicate places. [2024-01-30 14:17:25,970 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 82 transitions, 551 flow [2024-01-30 14:17:25,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.428571428571427) internal successors, (192), 7 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:25,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:17:25,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:17:25,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-01-30 14:17:25,971 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:17:25,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:17:25,971 INFO L85 PathProgramCache]: Analyzing trace with hash -74435309, now seen corresponding path program 2 times [2024-01-30 14:17:25,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:17:25,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575533831] [2024-01-30 14:17:25,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:17:25,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:17:25,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:17:26,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:17:26,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:17:26,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575533831] [2024-01-30 14:17:26,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575533831] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:17:26,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:17:26,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-30 14:17:26,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761760546] [2024-01-30 14:17:26,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:17:26,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-30 14:17:26,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:17:26,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-30 14:17:26,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-01-30 14:17:26,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-01-30 14:17:26,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 82 transitions, 551 flow. Second operand has 7 states, 7 states have (on average 27.428571428571427) internal successors, (192), 7 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:26,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:17:26,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-01-30 14:17:26,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:17:26,484 INFO L124 PetriNetUnfolderBase]: 1251/2338 cut-off events. [2024-01-30 14:17:26,484 INFO L125 PetriNetUnfolderBase]: For 3700/3710 co-relation queries the response was YES. [2024-01-30 14:17:26,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6606 conditions, 2338 events. 1251/2338 cut-off events. For 3700/3710 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 15661 event pairs, 791 based on Foata normal form. 18/2147 useless extension candidates. Maximal degree in co-relation 6566. Up to 1937 conditions per place. [2024-01-30 14:17:26,497 INFO L140 encePairwiseOnDemand]: 62/68 looper letters, 60 selfloop transitions, 15 changer transitions 0/94 dead transitions. [2024-01-30 14:17:26,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 94 transitions, 735 flow [2024-01-30 14:17:26,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:17:26,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:17:26,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 157 transitions. [2024-01-30 14:17:26,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5772058823529411 [2024-01-30 14:17:26,499 INFO L175 Difference]: Start difference. First operand has 102 places, 82 transitions, 551 flow. Second operand 4 states and 157 transitions. [2024-01-30 14:17:26,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 94 transitions, 735 flow [2024-01-30 14:17:26,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 94 transitions, 723 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-01-30 14:17:26,504 INFO L231 Difference]: Finished difference. Result has 105 places, 82 transitions, 581 flow [2024-01-30 14:17:26,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=539, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=581, PETRI_PLACES=105, PETRI_TRANSITIONS=82} [2024-01-30 14:17:26,504 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 33 predicate places. [2024-01-30 14:17:26,504 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 82 transitions, 581 flow [2024-01-30 14:17:26,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.428571428571427) internal successors, (192), 7 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:26,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:17:26,505 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:17:26,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-01-30 14:17:26,505 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:17:26,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:17:26,506 INFO L85 PathProgramCache]: Analyzing trace with hash -74413485, now seen corresponding path program 1 times [2024-01-30 14:17:26,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:17:26,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728545525] [2024-01-30 14:17:26,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:17:26,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:17:26,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:17:26,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:17:26,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:17:26,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728545525] [2024-01-30 14:17:26,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728545525] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:17:26,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:17:26,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-30 14:17:26,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265278802] [2024-01-30 14:17:26,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:17:26,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-30 14:17:26,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:17:26,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-30 14:17:26,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-01-30 14:17:26,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-01-30 14:17:26,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 82 transitions, 581 flow. Second operand has 7 states, 7 states have (on average 27.428571428571427) internal successors, (192), 7 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:26,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:17:26,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-01-30 14:17:26,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:17:27,026 INFO L124 PetriNetUnfolderBase]: 1291/2408 cut-off events. [2024-01-30 14:17:27,026 INFO L125 PetriNetUnfolderBase]: For 4358/4377 co-relation queries the response was YES. [2024-01-30 14:17:27,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6931 conditions, 2408 events. 1291/2408 cut-off events. For 4358/4377 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 16074 event pairs, 815 based on Foata normal form. 35/2234 useless extension candidates. Maximal degree in co-relation 6889. Up to 2001 conditions per place. [2024-01-30 14:17:27,041 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 58 selfloop transitions, 17 changer transitions 0/94 dead transitions. [2024-01-30 14:17:27,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 94 transitions, 767 flow [2024-01-30 14:17:27,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:17:27,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:17:27,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 156 transitions. [2024-01-30 14:17:27,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5735294117647058 [2024-01-30 14:17:27,043 INFO L175 Difference]: Start difference. First operand has 105 places, 82 transitions, 581 flow. Second operand 4 states and 156 transitions. [2024-01-30 14:17:27,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 94 transitions, 767 flow [2024-01-30 14:17:27,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 94 transitions, 737 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-30 14:17:27,048 INFO L231 Difference]: Finished difference. Result has 106 places, 84 transitions, 614 flow [2024-01-30 14:17:27,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=551, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=614, PETRI_PLACES=106, PETRI_TRANSITIONS=84} [2024-01-30 14:17:27,049 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 34 predicate places. [2024-01-30 14:17:27,049 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 84 transitions, 614 flow [2024-01-30 14:17:27,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.428571428571427) internal successors, (192), 7 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:27,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:17:27,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:17:27,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-01-30 14:17:27,050 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:17:27,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:17:27,051 INFO L85 PathProgramCache]: Analyzing trace with hash -914706889, now seen corresponding path program 1 times [2024-01-30 14:17:27,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:17:27,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252327469] [2024-01-30 14:17:27,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:17:27,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:17:27,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:17:27,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:17:27,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:17:27,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252327469] [2024-01-30 14:17:27,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252327469] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:17:27,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:17:27,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-30 14:17:27,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623283741] [2024-01-30 14:17:27,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:17:27,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-30 14:17:27,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:17:27,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-30 14:17:27,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-30 14:17:27,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:17:27,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 84 transitions, 614 flow. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 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) [2024-01-30 14:17:27,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:17:27,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:17:27,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:17:27,746 INFO L124 PetriNetUnfolderBase]: 1794/3267 cut-off events. [2024-01-30 14:17:27,746 INFO L125 PetriNetUnfolderBase]: For 6111/6168 co-relation queries the response was YES. [2024-01-30 14:17:27,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9577 conditions, 3267 events. 1794/3267 cut-off events. For 6111/6168 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 21419 event pairs, 926 based on Foata normal form. 25/3023 useless extension candidates. Maximal degree in co-relation 9534. Up to 2634 conditions per place. [2024-01-30 14:17:27,763 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 80 selfloop transitions, 23 changer transitions 0/114 dead transitions. [2024-01-30 14:17:27,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 114 transitions, 897 flow [2024-01-30 14:17:27,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:17:27,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:17:27,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 196 transitions. [2024-01-30 14:17:27,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4117647058823529 [2024-01-30 14:17:27,765 INFO L175 Difference]: Start difference. First operand has 106 places, 84 transitions, 614 flow. Second operand 7 states and 196 transitions. [2024-01-30 14:17:27,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 114 transitions, 897 flow [2024-01-30 14:17:27,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 114 transitions, 866 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-01-30 14:17:27,772 INFO L231 Difference]: Finished difference. Result has 111 places, 84 transitions, 637 flow [2024-01-30 14:17:27,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=583, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=637, PETRI_PLACES=111, PETRI_TRANSITIONS=84} [2024-01-30 14:17:27,773 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 39 predicate places. [2024-01-30 14:17:27,773 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 84 transitions, 637 flow [2024-01-30 14:17:27,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 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) [2024-01-30 14:17:27,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:17:27,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:17:27,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-01-30 14:17:27,774 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:17:27,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:17:27,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1463038319, now seen corresponding path program 1 times [2024-01-30 14:17:27,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:17:27,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907982219] [2024-01-30 14:17:27,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:17:27,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:17:27,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:17:27,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:17:27,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:17:27,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907982219] [2024-01-30 14:17:27,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907982219] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:17:27,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:17:27,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-30 14:17:27,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437795636] [2024-01-30 14:17:27,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:17:27,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-30 14:17:27,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:17:27,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-30 14:17:27,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-30 14:17:27,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:17:27,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 84 transitions, 637 flow. Second operand has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:27,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:17:27,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:17:27,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:17:28,442 INFO L124 PetriNetUnfolderBase]: 1819/3265 cut-off events. [2024-01-30 14:17:28,442 INFO L125 PetriNetUnfolderBase]: For 5855/5873 co-relation queries the response was YES. [2024-01-30 14:17:28,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9708 conditions, 3265 events. 1819/3265 cut-off events. For 5855/5873 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 20956 event pairs, 1054 based on Foata normal form. 21/3026 useless extension candidates. Maximal degree in co-relation 9664. Up to 2659 conditions per place. [2024-01-30 14:17:28,461 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 80 selfloop transitions, 21 changer transitions 0/112 dead transitions. [2024-01-30 14:17:28,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 112 transitions, 935 flow [2024-01-30 14:17:28,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-30 14:17:28,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-30 14:17:28,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 175 transitions. [2024-01-30 14:17:28,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42892156862745096 [2024-01-30 14:17:28,462 INFO L175 Difference]: Start difference. First operand has 111 places, 84 transitions, 637 flow. Second operand 6 states and 175 transitions. [2024-01-30 14:17:28,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 112 transitions, 935 flow [2024-01-30 14:17:28,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 112 transitions, 872 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-01-30 14:17:28,470 INFO L231 Difference]: Finished difference. Result has 111 places, 87 transitions, 654 flow [2024-01-30 14:17:28,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=578, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=654, PETRI_PLACES=111, PETRI_TRANSITIONS=87} [2024-01-30 14:17:28,470 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 39 predicate places. [2024-01-30 14:17:28,470 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 87 transitions, 654 flow [2024-01-30 14:17:28,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:28,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:17:28,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:17:28,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-01-30 14:17:28,471 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:17:28,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:17:28,471 INFO L85 PathProgramCache]: Analyzing trace with hash -90728017, now seen corresponding path program 2 times [2024-01-30 14:17:28,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:17:28,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426233670] [2024-01-30 14:17:28,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:17:28,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:17:28,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:17:28,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:17:28,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:17:28,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426233670] [2024-01-30 14:17:28,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426233670] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:17:28,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:17:28,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-30 14:17:28,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450848612] [2024-01-30 14:17:28,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:17:28,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-30 14:17:28,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:17:28,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-30 14:17:28,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-01-30 14:17:28,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:17:28,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 87 transitions, 654 flow. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 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) [2024-01-30 14:17:28,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:17:28,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:17:28,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:17:29,294 INFO L124 PetriNetUnfolderBase]: 1989/3550 cut-off events. [2024-01-30 14:17:29,295 INFO L125 PetriNetUnfolderBase]: For 6556/6634 co-relation queries the response was YES. [2024-01-30 14:17:29,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10746 conditions, 3550 events. 1989/3550 cut-off events. For 6556/6634 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 23112 event pairs, 1190 based on Foata normal form. 58/3312 useless extension candidates. Maximal degree in co-relation 10701. Up to 3025 conditions per place. [2024-01-30 14:17:29,322 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 83 selfloop transitions, 21 changer transitions 0/116 dead transitions. [2024-01-30 14:17:29,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 116 transitions, 984 flow [2024-01-30 14:17:29,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:17:29,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:17:29,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 188 transitions. [2024-01-30 14:17:29,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3949579831932773 [2024-01-30 14:17:29,325 INFO L175 Difference]: Start difference. First operand has 111 places, 87 transitions, 654 flow. Second operand 7 states and 188 transitions. [2024-01-30 14:17:29,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 116 transitions, 984 flow [2024-01-30 14:17:29,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 116 transitions, 934 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-30 14:17:29,338 INFO L231 Difference]: Finished difference. Result has 114 places, 93 transitions, 728 flow [2024-01-30 14:17:29,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=728, PETRI_PLACES=114, PETRI_TRANSITIONS=93} [2024-01-30 14:17:29,339 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 42 predicate places. [2024-01-30 14:17:29,339 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 93 transitions, 728 flow [2024-01-30 14:17:29,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 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) [2024-01-30 14:17:29,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:17:29,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:17:29,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-01-30 14:17:29,340 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:17:29,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:17:29,341 INFO L85 PathProgramCache]: Analyzing trace with hash -648338987, now seen corresponding path program 2 times [2024-01-30 14:17:29,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:17:29,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162340988] [2024-01-30 14:17:29,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:17:29,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:17:29,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:17:29,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:17:29,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:17:29,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162340988] [2024-01-30 14:17:29,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162340988] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:17:29,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:17:29,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-30 14:17:29,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136740916] [2024-01-30 14:17:29,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:17:29,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-30 14:17:29,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:17:29,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-30 14:17:29,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-01-30 14:17:29,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:17:29,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 93 transitions, 728 flow. Second operand has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:29,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:17:29,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:17:29,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:17:30,189 INFO L124 PetriNetUnfolderBase]: 1819/3283 cut-off events. [2024-01-30 14:17:30,189 INFO L125 PetriNetUnfolderBase]: For 6673/6691 co-relation queries the response was YES. [2024-01-30 14:17:30,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10127 conditions, 3283 events. 1819/3283 cut-off events. For 6673/6691 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 21164 event pairs, 1163 based on Foata normal form. 51/3074 useless extension candidates. Maximal degree in co-relation 10081. Up to 2766 conditions per place. [2024-01-30 14:17:30,211 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 74 selfloop transitions, 23 changer transitions 0/108 dead transitions. [2024-01-30 14:17:30,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 108 transitions, 969 flow [2024-01-30 14:17:30,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-30 14:17:30,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-30 14:17:30,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 162 transitions. [2024-01-30 14:17:30,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39705882352941174 [2024-01-30 14:17:30,212 INFO L175 Difference]: Start difference. First operand has 114 places, 93 transitions, 728 flow. Second operand 6 states and 162 transitions. [2024-01-30 14:17:30,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 108 transitions, 969 flow [2024-01-30 14:17:30,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 108 transitions, 928 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-01-30 14:17:30,222 INFO L231 Difference]: Finished difference. Result has 116 places, 93 transitions, 745 flow [2024-01-30 14:17:30,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=687, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=745, PETRI_PLACES=116, PETRI_TRANSITIONS=93} [2024-01-30 14:17:30,223 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 44 predicate places. [2024-01-30 14:17:30,223 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 93 transitions, 745 flow [2024-01-30 14:17:30,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:30,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:17:30,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:17:30,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-01-30 14:17:30,224 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:17:30,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:17:30,224 INFO L85 PathProgramCache]: Analyzing trace with hash 103543259, now seen corresponding path program 1 times [2024-01-30 14:17:30,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:17:30,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282749346] [2024-01-30 14:17:30,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:17:30,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:17:30,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:17:30,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:17:30,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:17:30,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282749346] [2024-01-30 14:17:30,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282749346] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:17:30,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:17:30,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-30 14:17:30,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430430049] [2024-01-30 14:17:30,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:17:30,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-30 14:17:30,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:17:30,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-30 14:17:30,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-01-30 14:17:30,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:17:30,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 93 transitions, 745 flow. Second operand has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:30,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:17:30,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:17:30,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:17:31,030 INFO L124 PetriNetUnfolderBase]: 1929/3466 cut-off events. [2024-01-30 14:17:31,031 INFO L125 PetriNetUnfolderBase]: For 6828/6903 co-relation queries the response was YES. [2024-01-30 14:17:31,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10705 conditions, 3466 events. 1929/3466 cut-off events. For 6828/6903 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 22607 event pairs, 1139 based on Foata normal form. 43/3213 useless extension candidates. Maximal degree in co-relation 10658. Up to 2894 conditions per place. [2024-01-30 14:17:31,052 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 92 selfloop transitions, 21 changer transitions 0/125 dead transitions. [2024-01-30 14:17:31,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 125 transitions, 1058 flow [2024-01-30 14:17:31,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-30 14:17:31,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-30 14:17:31,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 212 transitions. [2024-01-30 14:17:31,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3897058823529412 [2024-01-30 14:17:31,054 INFO L175 Difference]: Start difference. First operand has 116 places, 93 transitions, 745 flow. Second operand 8 states and 212 transitions. [2024-01-30 14:17:31,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 125 transitions, 1058 flow [2024-01-30 14:17:31,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 125 transitions, 1012 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-01-30 14:17:31,064 INFO L231 Difference]: Finished difference. Result has 119 places, 95 transitions, 756 flow [2024-01-30 14:17:31,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=699, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=756, PETRI_PLACES=119, PETRI_TRANSITIONS=95} [2024-01-30 14:17:31,065 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 47 predicate places. [2024-01-30 14:17:31,065 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 95 transitions, 756 flow [2024-01-30 14:17:31,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:31,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:17:31,065 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:17:31,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-01-30 14:17:31,066 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:17:31,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:17:31,066 INFO L85 PathProgramCache]: Analyzing trace with hash -629805353, now seen corresponding path program 1 times [2024-01-30 14:17:31,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:17:31,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367731148] [2024-01-30 14:17:31,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:17:31,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:17:31,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:17:31,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:17:31,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:17:31,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367731148] [2024-01-30 14:17:31,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367731148] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:17:31,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:17:31,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-30 14:17:31,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177658231] [2024-01-30 14:17:31,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:17:31,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-30 14:17:31,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:17:31,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-30 14:17:31,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-01-30 14:17:31,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:17:31,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 95 transitions, 756 flow. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 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) [2024-01-30 14:17:31,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:17:31,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:17:31,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:17:31,756 INFO L124 PetriNetUnfolderBase]: 1819/3286 cut-off events. [2024-01-30 14:17:31,757 INFO L125 PetriNetUnfolderBase]: For 7040/7058 co-relation queries the response was YES. [2024-01-30 14:17:31,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10311 conditions, 3286 events. 1819/3286 cut-off events. For 7040/7058 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 21245 event pairs, 1088 based on Foata normal form. 33/3059 useless extension candidates. Maximal degree in co-relation 10264. Up to 2739 conditions per place. [2024-01-30 14:17:31,774 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 74 selfloop transitions, 26 changer transitions 0/111 dead transitions. [2024-01-30 14:17:31,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 111 transitions, 997 flow [2024-01-30 14:17:31,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-30 14:17:31,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-30 14:17:31,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 164 transitions. [2024-01-30 14:17:31,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4019607843137255 [2024-01-30 14:17:31,776 INFO L175 Difference]: Start difference. First operand has 119 places, 95 transitions, 756 flow. Second operand 6 states and 164 transitions. [2024-01-30 14:17:31,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 111 transitions, 997 flow [2024-01-30 14:17:31,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 111 transitions, 931 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-01-30 14:17:31,785 INFO L231 Difference]: Finished difference. Result has 118 places, 95 transitions, 762 flow [2024-01-30 14:17:31,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=762, PETRI_PLACES=118, PETRI_TRANSITIONS=95} [2024-01-30 14:17:31,786 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 46 predicate places. [2024-01-30 14:17:31,786 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 95 transitions, 762 flow [2024-01-30 14:17:31,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 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) [2024-01-30 14:17:31,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:17:31,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:17:31,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-01-30 14:17:31,787 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:17:31,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:17:31,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1732391577, now seen corresponding path program 2 times [2024-01-30 14:17:31,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:17:31,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619228643] [2024-01-30 14:17:31,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:17:31,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:17:31,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:17:31,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:17:31,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:17:31,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619228643] [2024-01-30 14:17:31,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619228643] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:17:31,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:17:31,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-30 14:17:31,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508247319] [2024-01-30 14:17:31,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:17:31,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-30 14:17:31,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:17:31,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-30 14:17:31,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-30 14:17:31,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-01-30 14:17:31,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 95 transitions, 762 flow. Second operand has 7 states, 7 states have (on average 27.428571428571427) internal successors, (192), 7 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:31,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:17:31,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-01-30 14:17:31,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:17:32,239 INFO L124 PetriNetUnfolderBase]: 1213/2294 cut-off events. [2024-01-30 14:17:32,240 INFO L125 PetriNetUnfolderBase]: For 6037/6068 co-relation queries the response was YES. [2024-01-30 14:17:32,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7557 conditions, 2294 events. 1213/2294 cut-off events. For 6037/6068 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 14919 event pairs, 747 based on Foata normal form. 47/2145 useless extension candidates. Maximal degree in co-relation 7510. Up to 1822 conditions per place. [2024-01-30 14:17:32,256 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 68 selfloop transitions, 23 changer transitions 0/111 dead transitions. [2024-01-30 14:17:32,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 111 transitions, 1000 flow [2024-01-30 14:17:32,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-30 14:17:32,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-30 14:17:32,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 188 transitions. [2024-01-30 14:17:32,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5529411764705883 [2024-01-30 14:17:32,257 INFO L175 Difference]: Start difference. First operand has 118 places, 95 transitions, 762 flow. Second operand 5 states and 188 transitions. [2024-01-30 14:17:32,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 111 transitions, 1000 flow [2024-01-30 14:17:32,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 111 transitions, 930 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-01-30 14:17:32,265 INFO L231 Difference]: Finished difference. Result has 117 places, 97 transitions, 765 flow [2024-01-30 14:17:32,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=696, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=765, PETRI_PLACES=117, PETRI_TRANSITIONS=97} [2024-01-30 14:17:32,266 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 45 predicate places. [2024-01-30 14:17:32,266 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 97 transitions, 765 flow [2024-01-30 14:17:32,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.428571428571427) internal successors, (192), 7 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:32,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:17:32,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:17:32,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-01-30 14:17:32,267 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:17:32,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:17:32,267 INFO L85 PathProgramCache]: Analyzing trace with hash 60605661, now seen corresponding path program 3 times [2024-01-30 14:17:32,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:17:32,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086752109] [2024-01-30 14:17:32,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:17:32,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:17:32,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:17:32,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:17:32,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:17:32,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086752109] [2024-01-30 14:17:32,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086752109] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:17:32,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:17:32,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-30 14:17:32,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559716798] [2024-01-30 14:17:32,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:17:32,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-30 14:17:32,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:17:32,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-30 14:17:32,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-01-30 14:17:32,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:17:32,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 97 transitions, 765 flow. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 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) [2024-01-30 14:17:32,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:17:32,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:17:32,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:17:32,988 INFO L124 PetriNetUnfolderBase]: 1743/3151 cut-off events. [2024-01-30 14:17:32,988 INFO L125 PetriNetUnfolderBase]: For 7793/7880 co-relation queries the response was YES. [2024-01-30 14:17:32,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10322 conditions, 3151 events. 1743/3151 cut-off events. For 7793/7880 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 19983 event pairs, 997 based on Foata normal form. 55/2946 useless extension candidates. Maximal degree in co-relation 10275. Up to 2658 conditions per place. [2024-01-30 14:17:33,008 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 92 selfloop transitions, 25 changer transitions 0/129 dead transitions. [2024-01-30 14:17:33,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 129 transitions, 1130 flow [2024-01-30 14:17:33,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-30 14:17:33,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-30 14:17:33,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-01-30 14:17:33,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3860294117647059 [2024-01-30 14:17:33,010 INFO L175 Difference]: Start difference. First operand has 117 places, 97 transitions, 765 flow. Second operand 8 states and 210 transitions. [2024-01-30 14:17:33,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 129 transitions, 1130 flow [2024-01-30 14:17:33,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 129 transitions, 1079 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-01-30 14:17:33,022 INFO L231 Difference]: Finished difference. Result has 122 places, 103 transitions, 855 flow [2024-01-30 14:17:33,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=718, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=855, PETRI_PLACES=122, PETRI_TRANSITIONS=103} [2024-01-30 14:17:33,022 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 50 predicate places. [2024-01-30 14:17:33,022 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 103 transitions, 855 flow [2024-01-30 14:17:33,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 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) [2024-01-30 14:17:33,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:17:33,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:17:33,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-01-30 14:17:33,023 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:17:33,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:17:33,023 INFO L85 PathProgramCache]: Analyzing trace with hash 773118249, now seen corresponding path program 2 times [2024-01-30 14:17:33,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:17:33,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510105595] [2024-01-30 14:17:33,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:17:33,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:17:33,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:17:33,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:17:33,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:17:33,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510105595] [2024-01-30 14:17:33,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510105595] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:17:33,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:17:33,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-30 14:17:33,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201231028] [2024-01-30 14:17:33,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:17:33,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-30 14:17:33,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:17:33,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-30 14:17:33,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-01-30 14:17:33,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:17:33,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 103 transitions, 855 flow. Second operand has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:33,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:17:33,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:17:33,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:17:33,782 INFO L124 PetriNetUnfolderBase]: 1763/3195 cut-off events. [2024-01-30 14:17:33,782 INFO L125 PetriNetUnfolderBase]: For 8454/8537 co-relation queries the response was YES. [2024-01-30 14:17:33,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10635 conditions, 3195 events. 1763/3195 cut-off events. For 8454/8537 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 20364 event pairs, 997 based on Foata normal form. 43/2972 useless extension candidates. Maximal degree in co-relation 10587. Up to 2744 conditions per place. [2024-01-30 14:17:33,799 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 94 selfloop transitions, 19 changer transitions 0/125 dead transitions. [2024-01-30 14:17:33,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 125 transitions, 1136 flow [2024-01-30 14:17:33,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:17:33,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:17:33,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 185 transitions. [2024-01-30 14:17:33,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38865546218487396 [2024-01-30 14:17:33,802 INFO L175 Difference]: Start difference. First operand has 122 places, 103 transitions, 855 flow. Second operand 7 states and 185 transitions. [2024-01-30 14:17:33,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 125 transitions, 1136 flow [2024-01-30 14:17:33,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 125 transitions, 1086 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-01-30 14:17:33,815 INFO L231 Difference]: Finished difference. Result has 124 places, 105 transitions, 862 flow [2024-01-30 14:17:33,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=805, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=862, PETRI_PLACES=124, PETRI_TRANSITIONS=105} [2024-01-30 14:17:33,815 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 52 predicate places. [2024-01-30 14:17:33,816 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 105 transitions, 862 flow [2024-01-30 14:17:33,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:33,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:17:33,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:17:33,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-01-30 14:17:33,816 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:17:33,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:17:33,817 INFO L85 PathProgramCache]: Analyzing trace with hash 796004553, now seen corresponding path program 2 times [2024-01-30 14:17:33,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:17:33,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79957432] [2024-01-30 14:17:33,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:17:33,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:17:33,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:17:34,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:17:34,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:17:34,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79957432] [2024-01-30 14:17:34,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79957432] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:17:34,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:17:34,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-30 14:17:34,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716909673] [2024-01-30 14:17:34,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:17:34,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-30 14:17:34,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:17:34,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-30 14:17:34,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-30 14:17:34,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:17:34,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 105 transitions, 862 flow. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 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) [2024-01-30 14:17:34,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:17:34,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:17:34,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:17:34,513 INFO L124 PetriNetUnfolderBase]: 1667/3041 cut-off events. [2024-01-30 14:17:34,513 INFO L125 PetriNetUnfolderBase]: For 8605/8623 co-relation queries the response was YES. [2024-01-30 14:17:34,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10164 conditions, 3041 events. 1667/3041 cut-off events. For 8605/8623 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 19274 event pairs, 1008 based on Foata normal form. 27/2844 useless extension candidates. Maximal degree in co-relation 10116. Up to 2406 conditions per place. [2024-01-30 14:17:34,541 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 84 selfloop transitions, 32 changer transitions 0/127 dead transitions. [2024-01-30 14:17:34,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 127 transitions, 1155 flow [2024-01-30 14:17:34,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:17:34,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:17:34,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 188 transitions. [2024-01-30 14:17:34,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3949579831932773 [2024-01-30 14:17:34,543 INFO L175 Difference]: Start difference. First operand has 124 places, 105 transitions, 862 flow. Second operand 7 states and 188 transitions. [2024-01-30 14:17:34,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 127 transitions, 1155 flow [2024-01-30 14:17:34,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 127 transitions, 1120 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-01-30 14:17:34,557 INFO L231 Difference]: Finished difference. Result has 126 places, 105 transitions, 900 flow [2024-01-30 14:17:34,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=827, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=900, PETRI_PLACES=126, PETRI_TRANSITIONS=105} [2024-01-30 14:17:34,557 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 54 predicate places. [2024-01-30 14:17:34,557 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 105 transitions, 900 flow [2024-01-30 14:17:34,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 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) [2024-01-30 14:17:34,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:17:34,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:17:34,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-01-30 14:17:34,558 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:17:34,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:17:34,559 INFO L85 PathProgramCache]: Analyzing trace with hash 83509975, now seen corresponding path program 3 times [2024-01-30 14:17:34,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:17:34,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154867594] [2024-01-30 14:17:34,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:17:34,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:17:34,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:17:34,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:17:34,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:17:34,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154867594] [2024-01-30 14:17:34,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154867594] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:17:34,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:17:34,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-30 14:17:34,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341444870] [2024-01-30 14:17:34,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:17:34,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-30 14:17:34,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:17:34,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-30 14:17:34,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-30 14:17:34,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:17:34,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 105 transitions, 900 flow. Second operand has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:34,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:17:34,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:17:34,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:17:35,245 INFO L124 PetriNetUnfolderBase]: 1753/3171 cut-off events. [2024-01-30 14:17:35,245 INFO L125 PetriNetUnfolderBase]: For 9082/9183 co-relation queries the response was YES. [2024-01-30 14:17:35,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10841 conditions, 3171 events. 1753/3171 cut-off events. For 9082/9183 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 20118 event pairs, 1002 based on Foata normal form. 66/2967 useless extension candidates. Maximal degree in co-relation 10792. Up to 2533 conditions per place. [2024-01-30 14:17:35,267 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 90 selfloop transitions, 29 changer transitions 0/131 dead transitions. [2024-01-30 14:17:35,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 131 transitions, 1211 flow [2024-01-30 14:17:35,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:17:35,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:17:35,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 192 transitions. [2024-01-30 14:17:35,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40336134453781514 [2024-01-30 14:17:35,269 INFO L175 Difference]: Start difference. First operand has 126 places, 105 transitions, 900 flow. Second operand 7 states and 192 transitions. [2024-01-30 14:17:35,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 131 transitions, 1211 flow [2024-01-30 14:17:35,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 131 transitions, 1143 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-30 14:17:35,286 INFO L231 Difference]: Finished difference. Result has 127 places, 107 transitions, 909 flow [2024-01-30 14:17:35,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=836, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=909, PETRI_PLACES=127, PETRI_TRANSITIONS=107} [2024-01-30 14:17:35,287 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 55 predicate places. [2024-01-30 14:17:35,287 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 107 transitions, 909 flow [2024-01-30 14:17:35,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:35,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:17:35,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:17:35,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-01-30 14:17:35,288 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:17:35,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:17:35,288 INFO L85 PathProgramCache]: Analyzing trace with hash 121184125, now seen corresponding path program 4 times [2024-01-30 14:17:35,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:17:35,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366676192] [2024-01-30 14:17:35,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:17:35,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:17:35,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:17:35,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:17:35,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:17:35,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366676192] [2024-01-30 14:17:35,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366676192] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:17:35,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:17:35,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-30 14:17:35,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015204354] [2024-01-30 14:17:35,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:17:35,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-30 14:17:35,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:17:35,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-30 14:17:35,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-01-30 14:17:35,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:17:35,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 107 transitions, 909 flow. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 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) [2024-01-30 14:17:35,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:17:35,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:17:35,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:17:36,087 INFO L124 PetriNetUnfolderBase]: 1733/3171 cut-off events. [2024-01-30 14:17:36,088 INFO L125 PetriNetUnfolderBase]: For 9338/9441 co-relation queries the response was YES. [2024-01-30 14:17:36,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10712 conditions, 3171 events. 1733/3171 cut-off events. For 9338/9441 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 20198 event pairs, 787 based on Foata normal form. 52/2969 useless extension candidates. Maximal degree in co-relation 10662. Up to 2546 conditions per place. [2024-01-30 14:17:36,120 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 81 selfloop transitions, 35 changer transitions 0/128 dead transitions. [2024-01-30 14:17:36,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 128 transitions, 1192 flow [2024-01-30 14:17:36,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-30 14:17:36,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-30 14:17:36,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 169 transitions. [2024-01-30 14:17:36,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41421568627450983 [2024-01-30 14:17:36,122 INFO L175 Difference]: Start difference. First operand has 127 places, 107 transitions, 909 flow. Second operand 6 states and 169 transitions. [2024-01-30 14:17:36,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 128 transitions, 1192 flow [2024-01-30 14:17:36,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 128 transitions, 1147 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-01-30 14:17:36,139 INFO L231 Difference]: Finished difference. Result has 129 places, 107 transitions, 960 flow [2024-01-30 14:17:36,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=864, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=960, PETRI_PLACES=129, PETRI_TRANSITIONS=107} [2024-01-30 14:17:36,139 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 57 predicate places. [2024-01-30 14:17:36,139 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 107 transitions, 960 flow [2024-01-30 14:17:36,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 8 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) [2024-01-30 14:17:36,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:17:36,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:17:36,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-01-30 14:17:36,140 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:17:36,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:17:36,141 INFO L85 PathProgramCache]: Analyzing trace with hash 121202999, now seen corresponding path program 4 times [2024-01-30 14:17:36,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:17:36,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241293656] [2024-01-30 14:17:36,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:17:36,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:17:36,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:17:36,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:17:36,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:17:36,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241293656] [2024-01-30 14:17:36,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241293656] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:17:36,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:17:36,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-30 14:17:36,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625557177] [2024-01-30 14:17:36,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:17:36,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-30 14:17:36,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:17:36,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-30 14:17:36,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-01-30 14:17:36,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:17:36,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 107 transitions, 960 flow. Second operand has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:36,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:17:36,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:17:36,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:17:36,905 INFO L124 PetriNetUnfolderBase]: 1723/3128 cut-off events. [2024-01-30 14:17:36,905 INFO L125 PetriNetUnfolderBase]: For 10602/10707 co-relation queries the response was YES. [2024-01-30 14:17:36,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10950 conditions, 3128 events. 1723/3128 cut-off events. For 10602/10707 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 19884 event pairs, 991 based on Foata normal form. 46/2905 useless extension candidates. Maximal degree in co-relation 10899. Up to 2628 conditions per place. [2024-01-30 14:17:36,925 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 89 selfloop transitions, 24 changer transitions 0/125 dead transitions. [2024-01-30 14:17:36,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 125 transitions, 1229 flow [2024-01-30 14:17:36,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-30 14:17:36,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-30 14:17:36,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 164 transitions. [2024-01-30 14:17:36,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4019607843137255 [2024-01-30 14:17:36,926 INFO L175 Difference]: Start difference. First operand has 129 places, 107 transitions, 960 flow. Second operand 6 states and 164 transitions. [2024-01-30 14:17:36,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 125 transitions, 1229 flow [2024-01-30 14:17:36,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 125 transitions, 1151 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-01-30 14:17:36,945 INFO L231 Difference]: Finished difference. Result has 130 places, 107 transitions, 941 flow [2024-01-30 14:17:36,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=882, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=941, PETRI_PLACES=130, PETRI_TRANSITIONS=107} [2024-01-30 14:17:36,946 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 58 predicate places. [2024-01-30 14:17:36,946 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 107 transitions, 941 flow [2024-01-30 14:17:36,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:36,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:17:36,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:17:36,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-01-30 14:17:36,947 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:17:36,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:17:36,948 INFO L85 PathProgramCache]: Analyzing trace with hash 892140449, now seen corresponding path program 5 times [2024-01-30 14:17:36,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:17:36,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820706311] [2024-01-30 14:17:36,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:17:36,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:17:36,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:17:37,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:17:37,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:17:37,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820706311] [2024-01-30 14:17:37,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820706311] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:17:37,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:17:37,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-30 14:17:37,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128027523] [2024-01-30 14:17:37,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:17:37,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-30 14:17:37,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:17:37,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-30 14:17:37,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-30 14:17:37,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:17:37,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 107 transitions, 941 flow. Second operand has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:37,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:17:37,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:17:37,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:17:37,644 INFO L124 PetriNetUnfolderBase]: 1743/3152 cut-off events. [2024-01-30 14:17:37,644 INFO L125 PetriNetUnfolderBase]: For 9299/9401 co-relation queries the response was YES. [2024-01-30 14:17:37,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10733 conditions, 3152 events. 1743/3152 cut-off events. For 9299/9401 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 20023 event pairs, 987 based on Foata normal form. 72/2951 useless extension candidates. Maximal degree in co-relation 10681. Up to 2510 conditions per place. [2024-01-30 14:17:37,666 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 86 selfloop transitions, 32 changer transitions 0/130 dead transitions. [2024-01-30 14:17:37,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 130 transitions, 1246 flow [2024-01-30 14:17:37,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-30 14:17:37,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-30 14:17:37,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 170 transitions. [2024-01-30 14:17:37,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-01-30 14:17:37,668 INFO L175 Difference]: Start difference. First operand has 130 places, 107 transitions, 941 flow. Second operand 6 states and 170 transitions. [2024-01-30 14:17:37,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 130 transitions, 1246 flow [2024-01-30 14:17:37,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 130 transitions, 1187 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-01-30 14:17:37,685 INFO L231 Difference]: Finished difference. Result has 130 places, 109 transitions, 970 flow [2024-01-30 14:17:37,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=886, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=970, PETRI_PLACES=130, PETRI_TRANSITIONS=109} [2024-01-30 14:17:37,686 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 58 predicate places. [2024-01-30 14:17:37,686 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 109 transitions, 970 flow [2024-01-30 14:17:37,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:37,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:17:37,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:17:37,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-01-30 14:17:37,686 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:17:37,687 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:17:37,687 INFO L85 PathProgramCache]: Analyzing trace with hash 918952349, now seen corresponding path program 6 times [2024-01-30 14:17:37,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:17:37,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584529020] [2024-01-30 14:17:37,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:17:37,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:17:37,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:17:37,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:17:37,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:17:37,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584529020] [2024-01-30 14:17:37,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584529020] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:17:37,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:17:37,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-30 14:17:37,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889629089] [2024-01-30 14:17:37,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:17:37,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-30 14:17:37,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:17:37,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-30 14:17:37,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-30 14:17:37,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:17:37,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 109 transitions, 970 flow. Second operand has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:37,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:17:37,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:17:37,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:17:38,301 INFO L124 PetriNetUnfolderBase]: 1769/3198 cut-off events. [2024-01-30 14:17:38,301 INFO L125 PetriNetUnfolderBase]: For 9658/9735 co-relation queries the response was YES. [2024-01-30 14:17:38,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10971 conditions, 3198 events. 1769/3198 cut-off events. For 9658/9735 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 20284 event pairs, 1003 based on Foata normal form. 73/2996 useless extension candidates. Maximal degree in co-relation 10919. Up to 2536 conditions per place. [2024-01-30 14:17:38,321 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 82 selfloop transitions, 39 changer transitions 0/133 dead transitions. [2024-01-30 14:17:38,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 133 transitions, 1310 flow [2024-01-30 14:17:38,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-30 14:17:38,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-30 14:17:38,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 167 transitions. [2024-01-30 14:17:38,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40931372549019607 [2024-01-30 14:17:38,323 INFO L175 Difference]: Start difference. First operand has 130 places, 109 transitions, 970 flow. Second operand 6 states and 167 transitions. [2024-01-30 14:17:38,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 133 transitions, 1310 flow [2024-01-30 14:17:38,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 133 transitions, 1238 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-01-30 14:17:38,340 INFO L231 Difference]: Finished difference. Result has 132 places, 116 transitions, 1068 flow [2024-01-30 14:17:38,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=916, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1068, PETRI_PLACES=132, PETRI_TRANSITIONS=116} [2024-01-30 14:17:38,340 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 60 predicate places. [2024-01-30 14:17:38,340 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 116 transitions, 1068 flow [2024-01-30 14:17:38,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:38,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:17:38,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:17:38,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-01-30 14:17:38,341 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:17:38,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:17:38,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1092593190, now seen corresponding path program 1 times [2024-01-30 14:17:38,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:17:38,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180314902] [2024-01-30 14:17:38,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:17:38,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:17:38,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:17:38,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:17:38,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:17:38,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180314902] [2024-01-30 14:17:38,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180314902] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:17:38,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:17:38,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-30 14:17:38,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571471371] [2024-01-30 14:17:38,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:17:38,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-30 14:17:38,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:17:38,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-30 14:17:38,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-30 14:17:38,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-01-30 14:17:38,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 116 transitions, 1068 flow. Second operand has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:38,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:17:38,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-01-30 14:17:38,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:17:38,825 INFO L124 PetriNetUnfolderBase]: 1224/2389 cut-off events. [2024-01-30 14:17:38,825 INFO L125 PetriNetUnfolderBase]: For 8868/8931 co-relation queries the response was YES. [2024-01-30 14:17:38,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8386 conditions, 2389 events. 1224/2389 cut-off events. For 8868/8931 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 15802 event pairs, 715 based on Foata normal form. 45/2244 useless extension candidates. Maximal degree in co-relation 8334. Up to 1842 conditions per place. [2024-01-30 14:17:38,842 INFO L140 encePairwiseOnDemand]: 62/68 looper letters, 109 selfloop transitions, 21 changer transitions 0/151 dead transitions. [2024-01-30 14:17:38,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 151 transitions, 1561 flow [2024-01-30 14:17:38,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-30 14:17:38,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-30 14:17:38,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 221 transitions. [2024-01-30 14:17:38,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-01-30 14:17:38,844 INFO L175 Difference]: Start difference. First operand has 132 places, 116 transitions, 1068 flow. Second operand 6 states and 221 transitions. [2024-01-30 14:17:38,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 151 transitions, 1561 flow [2024-01-30 14:17:38,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 151 transitions, 1500 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-01-30 14:17:38,858 INFO L231 Difference]: Finished difference. Result has 136 places, 130 transitions, 1237 flow [2024-01-30 14:17:38,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=1011, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1237, PETRI_PLACES=136, PETRI_TRANSITIONS=130} [2024-01-30 14:17:38,859 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 64 predicate places. [2024-01-30 14:17:38,859 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 130 transitions, 1237 flow [2024-01-30 14:17:38,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:38,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:17:38,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:17:38,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-01-30 14:17:38,860 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:17:38,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:17:38,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1619442474, now seen corresponding path program 1 times [2024-01-30 14:17:38,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:17:38,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118195875] [2024-01-30 14:17:38,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:17:38,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:17:38,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:17:39,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:17:39,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:17:39,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118195875] [2024-01-30 14:17:39,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118195875] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:17:39,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:17:39,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-30 14:17:39,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983591953] [2024-01-30 14:17:39,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:17:39,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-30 14:17:39,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:17:39,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-30 14:17:39,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-30 14:17:39,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-01-30 14:17:39,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 130 transitions, 1237 flow. Second operand has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:39,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:17:39,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-01-30 14:17:39,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:17:39,351 INFO L124 PetriNetUnfolderBase]: 1225/2343 cut-off events. [2024-01-30 14:17:39,351 INFO L125 PetriNetUnfolderBase]: For 8893/8956 co-relation queries the response was YES. [2024-01-30 14:17:39,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8380 conditions, 2343 events. 1225/2343 cut-off events. For 8893/8956 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 15247 event pairs, 706 based on Foata normal form. 61/2225 useless extension candidates. Maximal degree in co-relation 8326. Up to 1860 conditions per place. [2024-01-30 14:17:39,366 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 114 selfloop transitions, 28 changer transitions 0/163 dead transitions. [2024-01-30 14:17:39,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 163 transitions, 1764 flow [2024-01-30 14:17:39,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-30 14:17:39,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-30 14:17:39,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 217 transitions. [2024-01-30 14:17:39,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5318627450980392 [2024-01-30 14:17:39,368 INFO L175 Difference]: Start difference. First operand has 136 places, 130 transitions, 1237 flow. Second operand 6 states and 217 transitions. [2024-01-30 14:17:39,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 163 transitions, 1764 flow [2024-01-30 14:17:39,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 163 transitions, 1762 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-01-30 14:17:39,383 INFO L231 Difference]: Finished difference. Result has 145 places, 149 transitions, 1547 flow [2024-01-30 14:17:39,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=1235, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1547, PETRI_PLACES=145, PETRI_TRANSITIONS=149} [2024-01-30 14:17:39,384 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 73 predicate places. [2024-01-30 14:17:39,384 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 149 transitions, 1547 flow [2024-01-30 14:17:39,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.571428571428573) internal successors, (193), 7 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:39,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:17:39,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:17:39,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-01-30 14:17:39,385 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:17:39,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:17:39,385 INFO L85 PathProgramCache]: Analyzing trace with hash 308207516, now seen corresponding path program 1 times [2024-01-30 14:17:39,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:17:39,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921829312] [2024-01-30 14:17:39,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:17:39,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:17:39,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:17:39,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:17:39,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:17:39,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921829312] [2024-01-30 14:17:39,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921829312] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:17:39,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:17:39,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-30 14:17:39,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108838918] [2024-01-30 14:17:39,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:17:39,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-30 14:17:39,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:17:39,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-30 14:17:39,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-01-30 14:17:39,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-01-30 14:17:39,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 149 transitions, 1547 flow. Second operand has 8 states, 8 states have (on average 27.375) internal successors, (219), 8 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) [2024-01-30 14:17:39,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:17:39,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-01-30 14:17:39,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:17:40,070 INFO L124 PetriNetUnfolderBase]: 1419/2676 cut-off events. [2024-01-30 14:17:40,070 INFO L125 PetriNetUnfolderBase]: For 12101/12177 co-relation queries the response was YES. [2024-01-30 14:17:40,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9956 conditions, 2676 events. 1419/2676 cut-off events. For 12101/12177 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 17616 event pairs, 560 based on Foata normal form. 107/2649 useless extension candidates. Maximal degree in co-relation 9896. Up to 1725 conditions per place. [2024-01-30 14:17:40,092 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 93 selfloop transitions, 71 changer transitions 0/185 dead transitions. [2024-01-30 14:17:40,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 185 transitions, 2047 flow [2024-01-30 14:17:40,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-30 14:17:40,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-30 14:17:40,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 292 transitions. [2024-01-30 14:17:40,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5367647058823529 [2024-01-30 14:17:40,095 INFO L175 Difference]: Start difference. First operand has 145 places, 149 transitions, 1547 flow. Second operand 8 states and 292 transitions. [2024-01-30 14:17:40,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 185 transitions, 2047 flow [2024-01-30 14:17:40,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 185 transitions, 2041 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-01-30 14:17:40,121 INFO L231 Difference]: Finished difference. Result has 154 places, 153 transitions, 1734 flow [2024-01-30 14:17:40,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=1541, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1734, PETRI_PLACES=154, PETRI_TRANSITIONS=153} [2024-01-30 14:17:40,122 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 82 predicate places. [2024-01-30 14:17:40,122 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 153 transitions, 1734 flow [2024-01-30 14:17:40,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.375) internal successors, (219), 8 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) [2024-01-30 14:17:40,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:17:40,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:17:40,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-01-30 14:17:40,123 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:17:40,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:17:40,123 INFO L85 PathProgramCache]: Analyzing trace with hash -714673632, now seen corresponding path program 2 times [2024-01-30 14:17:40,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:17:40,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345031911] [2024-01-30 14:17:40,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:17:40,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:17:40,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:17:40,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:17:40,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:17:40,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345031911] [2024-01-30 14:17:40,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345031911] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:17:40,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:17:40,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-30 14:17:40,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723161901] [2024-01-30 14:17:40,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:17:40,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-30 14:17:40,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:17:40,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-30 14:17:40,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-01-30 14:17:40,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-01-30 14:17:40,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 153 transitions, 1734 flow. Second operand has 8 states, 8 states have (on average 27.375) internal successors, (219), 8 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) [2024-01-30 14:17:40,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:17:40,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-01-30 14:17:40,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:17:40,907 INFO L124 PetriNetUnfolderBase]: 1499/2810 cut-off events. [2024-01-30 14:17:40,907 INFO L125 PetriNetUnfolderBase]: For 15325/15401 co-relation queries the response was YES. [2024-01-30 14:17:40,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11119 conditions, 2810 events. 1499/2810 cut-off events. For 15325/15401 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 18598 event pairs, 631 based on Foata normal form. 75/2751 useless extension candidates. Maximal degree in co-relation 11055. Up to 1878 conditions per place. [2024-01-30 14:17:40,941 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 91 selfloop transitions, 69 changer transitions 0/181 dead transitions. [2024-01-30 14:17:40,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 181 transitions, 2202 flow [2024-01-30 14:17:40,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-30 14:17:40,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-30 14:17:40,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 229 transitions. [2024-01-30 14:17:40,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5612745098039216 [2024-01-30 14:17:40,944 INFO L175 Difference]: Start difference. First operand has 154 places, 153 transitions, 1734 flow. Second operand 6 states and 229 transitions. [2024-01-30 14:17:40,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 181 transitions, 2202 flow [2024-01-30 14:17:40,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 181 transitions, 2105 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-01-30 14:17:40,975 INFO L231 Difference]: Finished difference. Result has 156 places, 155 transitions, 1803 flow [2024-01-30 14:17:40,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=1639, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1803, PETRI_PLACES=156, PETRI_TRANSITIONS=155} [2024-01-30 14:17:40,976 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 84 predicate places. [2024-01-30 14:17:40,976 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 155 transitions, 1803 flow [2024-01-30 14:17:40,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.375) internal successors, (219), 8 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) [2024-01-30 14:17:40,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:17:40,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:17:40,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-01-30 14:17:40,977 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:17:40,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:17:40,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1502391874, now seen corresponding path program 3 times [2024-01-30 14:17:40,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:17:40,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620889701] [2024-01-30 14:17:40,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:17:40,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:17:40,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:17:41,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:17:41,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:17:41,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620889701] [2024-01-30 14:17:41,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620889701] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:17:41,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:17:41,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-30 14:17:41,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744398471] [2024-01-30 14:17:41,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:17:41,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-30 14:17:41,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:17:41,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-30 14:17:41,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-01-30 14:17:41,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-01-30 14:17:41,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 155 transitions, 1803 flow. Second operand has 8 states, 8 states have (on average 27.375) internal successors, (219), 8 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) [2024-01-30 14:17:41,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:17:41,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-01-30 14:17:41,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:17:41,588 INFO L124 PetriNetUnfolderBase]: 1467/2762 cut-off events. [2024-01-30 14:17:41,588 INFO L125 PetriNetUnfolderBase]: For 15475/15551 co-relation queries the response was YES. [2024-01-30 14:17:41,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11034 conditions, 2762 events. 1467/2762 cut-off events. For 15475/15551 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 18249 event pairs, 611 based on Foata normal form. 75/2703 useless extension candidates. Maximal degree in co-relation 10968. Up to 1870 conditions per place. [2024-01-30 14:17:41,609 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 93 selfloop transitions, 69 changer transitions 0/183 dead transitions. [2024-01-30 14:17:41,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 183 transitions, 2247 flow [2024-01-30 14:17:41,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:17:41,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:17:41,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 258 transitions. [2024-01-30 14:17:41,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.542016806722689 [2024-01-30 14:17:41,610 INFO L175 Difference]: Start difference. First operand has 156 places, 155 transitions, 1803 flow. Second operand 7 states and 258 transitions. [2024-01-30 14:17:41,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 183 transitions, 2247 flow [2024-01-30 14:17:41,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 183 transitions, 2146 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-01-30 14:17:41,638 INFO L231 Difference]: Finished difference. Result has 160 places, 155 transitions, 1850 flow [2024-01-30 14:17:41,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=1702, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1850, PETRI_PLACES=160, PETRI_TRANSITIONS=155} [2024-01-30 14:17:41,638 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 88 predicate places. [2024-01-30 14:17:41,639 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 155 transitions, 1850 flow [2024-01-30 14:17:41,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.375) internal successors, (219), 8 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) [2024-01-30 14:17:41,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:17:41,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:17:41,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-01-30 14:17:41,639 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:17:41,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:17:41,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1435001812, now seen corresponding path program 1 times [2024-01-30 14:17:41,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:17:41,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946013881] [2024-01-30 14:17:41,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:17:41,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:17:41,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:17:41,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:17:41,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:17:41,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946013881] [2024-01-30 14:17:41,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946013881] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:17:41,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:17:41,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:17:41,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577509519] [2024-01-30 14:17:41,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:17:41,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-30 14:17:41,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:17:41,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-30 14:17:41,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-01-30 14:17:41,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:17:41,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 155 transitions, 1850 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:41,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:17:41,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:17:41,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:17:42,514 INFO L124 PetriNetUnfolderBase]: 2030/3646 cut-off events. [2024-01-30 14:17:42,514 INFO L125 PetriNetUnfolderBase]: For 18976/19116 co-relation queries the response was YES. [2024-01-30 14:17:42,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14363 conditions, 3646 events. 2030/3646 cut-off events. For 18976/19116 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 23190 event pairs, 826 based on Foata normal form. 72/3545 useless extension candidates. Maximal degree in co-relation 14296. Up to 2325 conditions per place. [2024-01-30 14:17:42,546 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 121 selfloop transitions, 69 changer transitions 0/202 dead transitions. [2024-01-30 14:17:42,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 202 transitions, 2400 flow [2024-01-30 14:17:42,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-30 14:17:42,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-30 14:17:42,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 268 transitions. [2024-01-30 14:17:42,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3941176470588235 [2024-01-30 14:17:42,549 INFO L175 Difference]: Start difference. First operand has 160 places, 155 transitions, 1850 flow. Second operand 10 states and 268 transitions. [2024-01-30 14:17:42,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 202 transitions, 2400 flow [2024-01-30 14:17:42,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 202 transitions, 2215 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-01-30 14:17:42,588 INFO L231 Difference]: Finished difference. Result has 163 places, 155 transitions, 1810 flow [2024-01-30 14:17:42,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=1665, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1810, PETRI_PLACES=163, PETRI_TRANSITIONS=155} [2024-01-30 14:17:42,589 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 91 predicate places. [2024-01-30 14:17:42,589 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 155 transitions, 1810 flow [2024-01-30 14:17:42,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:42,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:17:42,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:17:42,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-01-30 14:17:42,590 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:17:42,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:17:42,590 INFO L85 PathProgramCache]: Analyzing trace with hash -2107274835, now seen corresponding path program 1 times [2024-01-30 14:17:42,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:17:42,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444514415] [2024-01-30 14:17:42,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:17:42,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:17:42,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:17:42,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:17:42,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:17:42,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444514415] [2024-01-30 14:17:42,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444514415] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:17:42,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:17:42,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-30 14:17:42,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597460543] [2024-01-30 14:17:42,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:17:42,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-30 14:17:42,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:17:42,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-30 14:17:42,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-30 14:17:42,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:17:42,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 155 transitions, 1810 flow. Second operand has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:42,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:17:42,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:17:42,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:17:43,294 INFO L124 PetriNetUnfolderBase]: 1993/3590 cut-off events. [2024-01-30 14:17:43,295 INFO L125 PetriNetUnfolderBase]: For 18813/18849 co-relation queries the response was YES. [2024-01-30 14:17:43,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14285 conditions, 3590 events. 1993/3590 cut-off events. For 18813/18849 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 22974 event pairs, 964 based on Foata normal form. 37/3466 useless extension candidates. Maximal degree in co-relation 14217. Up to 2926 conditions per place. [2024-01-30 14:17:43,325 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 149 selfloop transitions, 27 changer transitions 0/188 dead transitions. [2024-01-30 14:17:43,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 188 transitions, 2304 flow [2024-01-30 14:17:43,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:17:43,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:17:43,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 192 transitions. [2024-01-30 14:17:43,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40336134453781514 [2024-01-30 14:17:43,328 INFO L175 Difference]: Start difference. First operand has 163 places, 155 transitions, 1810 flow. Second operand 7 states and 192 transitions. [2024-01-30 14:17:43,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 188 transitions, 2304 flow [2024-01-30 14:17:43,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 188 transitions, 2166 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-01-30 14:17:43,371 INFO L231 Difference]: Finished difference. Result has 162 places, 162 transitions, 1784 flow [2024-01-30 14:17:43,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=1672, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1784, PETRI_PLACES=162, PETRI_TRANSITIONS=162} [2024-01-30 14:17:43,372 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 90 predicate places. [2024-01-30 14:17:43,372 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 162 transitions, 1784 flow [2024-01-30 14:17:43,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:43,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:17:43,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:17:43,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-01-30 14:17:43,373 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:17:43,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:17:43,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1383620601, now seen corresponding path program 2 times [2024-01-30 14:17:43,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:17:43,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064939427] [2024-01-30 14:17:43,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:17:43,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:17:43,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:17:43,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:17:43,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:17:43,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064939427] [2024-01-30 14:17:43,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064939427] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:17:43,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:17:43,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-30 14:17:43,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511418035] [2024-01-30 14:17:43,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:17:43,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-30 14:17:43,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:17:43,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-30 14:17:43,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-30 14:17:43,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:17:43,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 162 transitions, 1784 flow. Second operand has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:43,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:17:43,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:17:43,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:17:44,146 INFO L124 PetriNetUnfolderBase]: 1987/3580 cut-off events. [2024-01-30 14:17:44,146 INFO L125 PetriNetUnfolderBase]: For 17743/17779 co-relation queries the response was YES. [2024-01-30 14:17:44,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14051 conditions, 3580 events. 1987/3580 cut-off events. For 17743/17779 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 22932 event pairs, 966 based on Foata normal form. 37/3456 useless extension candidates. Maximal degree in co-relation 13981. Up to 2926 conditions per place. [2024-01-30 14:17:44,177 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 148 selfloop transitions, 28 changer transitions 0/188 dead transitions. [2024-01-30 14:17:44,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 188 transitions, 2236 flow [2024-01-30 14:17:44,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:17:44,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:17:44,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 192 transitions. [2024-01-30 14:17:44,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40336134453781514 [2024-01-30 14:17:44,178 INFO L175 Difference]: Start difference. First operand has 162 places, 162 transitions, 1784 flow. Second operand 7 states and 192 transitions. [2024-01-30 14:17:44,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 188 transitions, 2236 flow [2024-01-30 14:17:44,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 188 transitions, 2198 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-01-30 14:17:44,218 INFO L231 Difference]: Finished difference. Result has 166 places, 162 transitions, 1807 flow [2024-01-30 14:17:44,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=1746, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1807, PETRI_PLACES=166, PETRI_TRANSITIONS=162} [2024-01-30 14:17:44,219 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 94 predicate places. [2024-01-30 14:17:44,219 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 162 transitions, 1807 flow [2024-01-30 14:17:44,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:44,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:17:44,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:17:44,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-01-30 14:17:44,220 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:17:44,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:17:44,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1092884810, now seen corresponding path program 1 times [2024-01-30 14:17:44,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:17:44,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124716389] [2024-01-30 14:17:44,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:17:44,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:17:44,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:17:44,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:17:44,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:17:44,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124716389] [2024-01-30 14:17:44,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124716389] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:17:44,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:17:44,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:17:44,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901513625] [2024-01-30 14:17:44,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:17:44,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-30 14:17:44,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:17:44,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-30 14:17:44,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-01-30 14:17:44,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:17:44,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 162 transitions, 1807 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:44,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:17:44,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:17:44,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:17:45,090 INFO L124 PetriNetUnfolderBase]: 2067/3734 cut-off events. [2024-01-30 14:17:45,090 INFO L125 PetriNetUnfolderBase]: For 18408/18444 co-relation queries the response was YES. [2024-01-30 14:17:45,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14645 conditions, 3734 events. 2067/3734 cut-off events. For 18408/18444 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 24190 event pairs, 741 based on Foata normal form. 45/3618 useless extension candidates. Maximal degree in co-relation 14574. Up to 2274 conditions per place. [2024-01-30 14:17:45,121 INFO L140 encePairwiseOnDemand]: 54/68 looper letters, 121 selfloop transitions, 81 changer transitions 0/214 dead transitions. [2024-01-30 14:17:45,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 214 transitions, 2415 flow [2024-01-30 14:17:45,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-30 14:17:45,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-30 14:17:45,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 274 transitions. [2024-01-30 14:17:45,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40294117647058825 [2024-01-30 14:17:45,123 INFO L175 Difference]: Start difference. First operand has 166 places, 162 transitions, 1807 flow. Second operand 10 states and 274 transitions. [2024-01-30 14:17:45,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 214 transitions, 2415 flow [2024-01-30 14:17:45,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 214 transitions, 2359 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-01-30 14:17:45,251 INFO L231 Difference]: Finished difference. Result has 172 places, 167 transitions, 1957 flow [2024-01-30 14:17:45,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=1751, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1957, PETRI_PLACES=172, PETRI_TRANSITIONS=167} [2024-01-30 14:17:45,252 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 100 predicate places. [2024-01-30 14:17:45,252 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 167 transitions, 1957 flow [2024-01-30 14:17:45,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:45,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:17:45,252 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:17:45,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-01-30 14:17:45,253 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:17:45,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:17:45,253 INFO L85 PathProgramCache]: Analyzing trace with hash -665617100, now seen corresponding path program 2 times [2024-01-30 14:17:45,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:17:45,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137019275] [2024-01-30 14:17:45,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:17:45,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:17:45,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:17:45,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:17:45,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:17:45,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137019275] [2024-01-30 14:17:45,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137019275] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:17:45,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:17:45,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:17:45,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956779107] [2024-01-30 14:17:45,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:17:45,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-30 14:17:45,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:17:45,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-30 14:17:45,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-01-30 14:17:45,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:17:45,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 167 transitions, 1957 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:45,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:17:45,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:17:45,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:17:46,311 INFO L124 PetriNetUnfolderBase]: 2625/4609 cut-off events. [2024-01-30 14:17:46,312 INFO L125 PetriNetUnfolderBase]: For 23679/23966 co-relation queries the response was YES. [2024-01-30 14:17:46,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19208 conditions, 4609 events. 2625/4609 cut-off events. For 23679/23966 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 30047 event pairs, 1130 based on Foata normal form. 96/4495 useless extension candidates. Maximal degree in co-relation 19135. Up to 3463 conditions per place. [2024-01-30 14:17:46,350 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 149 selfloop transitions, 51 changer transitions 0/216 dead transitions. [2024-01-30 14:17:46,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 216 transitions, 2601 flow [2024-01-30 14:17:46,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-30 14:17:46,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-30 14:17:46,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 263 transitions. [2024-01-30 14:17:46,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38676470588235295 [2024-01-30 14:17:46,360 INFO L175 Difference]: Start difference. First operand has 172 places, 167 transitions, 1957 flow. Second operand 10 states and 263 transitions. [2024-01-30 14:17:46,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 216 transitions, 2601 flow [2024-01-30 14:17:46,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 216 transitions, 2457 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-01-30 14:17:46,419 INFO L231 Difference]: Finished difference. Result has 176 places, 173 transitions, 2002 flow [2024-01-30 14:17:46,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=1819, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2002, PETRI_PLACES=176, PETRI_TRANSITIONS=173} [2024-01-30 14:17:46,426 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 104 predicate places. [2024-01-30 14:17:46,426 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 173 transitions, 2002 flow [2024-01-30 14:17:46,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:46,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:17:46,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:17:46,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-01-30 14:17:46,427 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:17:46,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:17:46,428 INFO L85 PathProgramCache]: Analyzing trace with hash -726734419, now seen corresponding path program 3 times [2024-01-30 14:17:46,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:17:46,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673128146] [2024-01-30 14:17:46,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:17:46,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:17:46,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:17:46,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:17:46,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:17:46,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673128146] [2024-01-30 14:17:46,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673128146] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:17:46,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:17:46,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-30 14:17:46,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826318851] [2024-01-30 14:17:46,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:17:46,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-30 14:17:46,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:17:46,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-30 14:17:46,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-30 14:17:46,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:17:46,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 173 transitions, 2002 flow. Second operand has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:46,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:17:46,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:17:46,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:17:47,349 INFO L124 PetriNetUnfolderBase]: 2341/4160 cut-off events. [2024-01-30 14:17:47,350 INFO L125 PetriNetUnfolderBase]: For 24031/24085 co-relation queries the response was YES. [2024-01-30 14:17:47,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18007 conditions, 4160 events. 2341/4160 cut-off events. For 24031/24085 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 27572 event pairs, 1068 based on Foata normal form. 37/4034 useless extension candidates. Maximal degree in co-relation 17932. Up to 3502 conditions per place. [2024-01-30 14:17:47,394 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 155 selfloop transitions, 32 changer transitions 0/199 dead transitions. [2024-01-30 14:17:47,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 199 transitions, 2484 flow [2024-01-30 14:17:47,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:17:47,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:17:47,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 189 transitions. [2024-01-30 14:17:47,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39705882352941174 [2024-01-30 14:17:47,396 INFO L175 Difference]: Start difference. First operand has 176 places, 173 transitions, 2002 flow. Second operand 7 states and 189 transitions. [2024-01-30 14:17:47,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 199 transitions, 2484 flow [2024-01-30 14:17:47,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 199 transitions, 2395 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-01-30 14:17:47,446 INFO L231 Difference]: Finished difference. Result has 177 places, 179 transitions, 2044 flow [2024-01-30 14:17:47,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=1913, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2044, PETRI_PLACES=177, PETRI_TRANSITIONS=179} [2024-01-30 14:17:47,447 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 105 predicate places. [2024-01-30 14:17:47,447 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 179 transitions, 2044 flow [2024-01-30 14:17:47,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:47,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:17:47,448 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:17:47,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-01-30 14:17:47,448 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:17:47,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:17:47,448 INFO L85 PathProgramCache]: Analyzing trace with hash -664982840, now seen corresponding path program 3 times [2024-01-30 14:17:47,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:17:47,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700356498] [2024-01-30 14:17:47,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:17:47,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:17:47,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:17:47,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:17:47,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:17:47,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700356498] [2024-01-30 14:17:47,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700356498] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:17:47,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:17:47,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:17:47,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421443926] [2024-01-30 14:17:47,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:17:47,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-30 14:17:47,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:17:47,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-30 14:17:47,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-01-30 14:17:47,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:17:47,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 179 transitions, 2044 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:47,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:17:47,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:17:47,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:17:48,606 INFO L124 PetriNetUnfolderBase]: 2540/4461 cut-off events. [2024-01-30 14:17:48,606 INFO L125 PetriNetUnfolderBase]: For 23717/23964 co-relation queries the response was YES. [2024-01-30 14:17:48,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18730 conditions, 4461 events. 2540/4461 cut-off events. For 23717/23964 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 28937 event pairs, 1102 based on Foata normal form. 115/4367 useless extension candidates. Maximal degree in co-relation 18653. Up to 3440 conditions per place. [2024-01-30 14:17:48,639 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 157 selfloop transitions, 51 changer transitions 0/226 dead transitions. [2024-01-30 14:17:48,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 226 transitions, 2656 flow [2024-01-30 14:17:48,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-30 14:17:48,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-30 14:17:48,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 283 transitions. [2024-01-30 14:17:48,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3783422459893048 [2024-01-30 14:17:48,642 INFO L175 Difference]: Start difference. First operand has 177 places, 179 transitions, 2044 flow. Second operand 11 states and 283 transitions. [2024-01-30 14:17:48,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 226 transitions, 2656 flow [2024-01-30 14:17:48,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 226 transitions, 2618 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-01-30 14:17:48,692 INFO L231 Difference]: Finished difference. Result has 186 places, 179 transitions, 2120 flow [2024-01-30 14:17:48,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=2008, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2120, PETRI_PLACES=186, PETRI_TRANSITIONS=179} [2024-01-30 14:17:48,693 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 114 predicate places. [2024-01-30 14:17:48,693 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 179 transitions, 2120 flow [2024-01-30 14:17:48,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:48,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:17:48,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:17:48,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-01-30 14:17:48,694 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:17:48,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:17:48,694 INFO L85 PathProgramCache]: Analyzing trace with hash -283495496, now seen corresponding path program 2 times [2024-01-30 14:17:48,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:17:48,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5462750] [2024-01-30 14:17:48,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:17:48,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:17:48,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:17:48,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:17:48,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:17:48,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5462750] [2024-01-30 14:17:48,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5462750] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:17:48,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:17:48,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:17:48,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329651341] [2024-01-30 14:17:48,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:17:48,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-30 14:17:48,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:17:48,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-30 14:17:48,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-01-30 14:17:48,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:17:48,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 179 transitions, 2120 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:48,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:17:48,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:17:48,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:17:49,705 INFO L124 PetriNetUnfolderBase]: 2171/3915 cut-off events. [2024-01-30 14:17:49,705 INFO L125 PetriNetUnfolderBase]: For 24616/24670 co-relation queries the response was YES. [2024-01-30 14:17:49,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17061 conditions, 3915 events. 2171/3915 cut-off events. For 24616/24670 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 25820 event pairs, 844 based on Foata normal form. 69/3823 useless extension candidates. Maximal degree in co-relation 16982. Up to 2462 conditions per place. [2024-01-30 14:17:49,739 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 120 selfloop transitions, 77 changer transitions 0/209 dead transitions. [2024-01-30 14:17:49,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 209 transitions, 2671 flow [2024-01-30 14:17:49,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-30 14:17:49,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-30 14:17:49,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 219 transitions. [2024-01-30 14:17:49,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025735294117647 [2024-01-30 14:17:49,741 INFO L175 Difference]: Start difference. First operand has 186 places, 179 transitions, 2120 flow. Second operand 8 states and 219 transitions. [2024-01-30 14:17:49,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 209 transitions, 2671 flow [2024-01-30 14:17:49,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 209 transitions, 2564 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-01-30 14:17:49,806 INFO L231 Difference]: Finished difference. Result has 184 places, 179 transitions, 2181 flow [2024-01-30 14:17:49,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=2013, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2181, PETRI_PLACES=184, PETRI_TRANSITIONS=179} [2024-01-30 14:17:49,807 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 112 predicate places. [2024-01-30 14:17:49,807 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 179 transitions, 2181 flow [2024-01-30 14:17:49,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:49,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:17:49,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:17:49,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-01-30 14:17:49,809 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:17:49,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:17:49,809 INFO L85 PathProgramCache]: Analyzing trace with hash 720859502, now seen corresponding path program 3 times [2024-01-30 14:17:49,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:17:49,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443884574] [2024-01-30 14:17:49,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:17:49,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:17:49,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:17:50,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:17:50,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:17:50,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443884574] [2024-01-30 14:17:50,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443884574] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:17:50,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:17:50,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:17:50,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374827759] [2024-01-30 14:17:50,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:17:50,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-30 14:17:50,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:17:50,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-30 14:17:50,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-01-30 14:17:50,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:17:50,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 179 transitions, 2181 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:50,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:17:50,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:17:50,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:17:50,912 INFO L124 PetriNetUnfolderBase]: 2051/3723 cut-off events. [2024-01-30 14:17:50,912 INFO L125 PetriNetUnfolderBase]: For 25182/25236 co-relation queries the response was YES. [2024-01-30 14:17:50,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16438 conditions, 3723 events. 2051/3723 cut-off events. For 25182/25236 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 24343 event pairs, 796 based on Foata normal form. 105/3667 useless extension candidates. Maximal degree in co-relation 16358. Up to 2438 conditions per place. [2024-01-30 14:17:50,953 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 121 selfloop transitions, 77 changer transitions 0/210 dead transitions. [2024-01-30 14:17:50,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 210 transitions, 2728 flow [2024-01-30 14:17:50,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-30 14:17:50,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-30 14:17:50,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 237 transitions. [2024-01-30 14:17:50,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3872549019607843 [2024-01-30 14:17:50,956 INFO L175 Difference]: Start difference. First operand has 184 places, 179 transitions, 2181 flow. Second operand 9 states and 237 transitions. [2024-01-30 14:17:50,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 210 transitions, 2728 flow [2024-01-30 14:17:51,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 210 transitions, 2574 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-01-30 14:17:51,017 INFO L231 Difference]: Finished difference. Result has 186 places, 179 transitions, 2199 flow [2024-01-30 14:17:51,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=2027, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2199, PETRI_PLACES=186, PETRI_TRANSITIONS=179} [2024-01-30 14:17:51,018 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 114 predicate places. [2024-01-30 14:17:51,018 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 179 transitions, 2199 flow [2024-01-30 14:17:51,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:51,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:17:51,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:17:51,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-01-30 14:17:51,019 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:17:51,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:17:51,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1503090752, now seen corresponding path program 4 times [2024-01-30 14:17:51,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:17:51,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809659806] [2024-01-30 14:17:51,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:17:51,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:17:51,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:17:51,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:17:51,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:17:51,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809659806] [2024-01-30 14:17:51,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809659806] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:17:51,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:17:51,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-30 14:17:51,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070915302] [2024-01-30 14:17:51,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:17:51,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-30 14:17:51,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:17:51,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-30 14:17:51,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-01-30 14:17:51,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-01-30 14:17:51,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 179 transitions, 2199 flow. Second operand has 8 states, 8 states have (on average 27.375) internal successors, (219), 8 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) [2024-01-30 14:17:51,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:17:51,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-01-30 14:17:51,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:17:51,710 INFO L124 PetriNetUnfolderBase]: 1363/2566 cut-off events. [2024-01-30 14:17:51,710 INFO L125 PetriNetUnfolderBase]: For 21494/21638 co-relation queries the response was YES. [2024-01-30 14:17:51,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11907 conditions, 2566 events. 1363/2566 cut-off events. For 21494/21638 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 16267 event pairs, 446 based on Foata normal form. 123/2579 useless extension candidates. Maximal degree in co-relation 11826. Up to 1457 conditions per place. [2024-01-30 14:17:51,737 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 98 selfloop transitions, 85 changer transitions 0/210 dead transitions. [2024-01-30 14:17:51,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 210 transitions, 2743 flow [2024-01-30 14:17:51,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-30 14:17:51,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-30 14:17:51,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 288 transitions. [2024-01-30 14:17:51,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5294117647058824 [2024-01-30 14:17:51,739 INFO L175 Difference]: Start difference. First operand has 186 places, 179 transitions, 2199 flow. Second operand 8 states and 288 transitions. [2024-01-30 14:17:51,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 210 transitions, 2743 flow [2024-01-30 14:17:51,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 210 transitions, 2589 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-01-30 14:17:51,782 INFO L231 Difference]: Finished difference. Result has 186 places, 181 transitions, 2244 flow [2024-01-30 14:17:51,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=2045, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2244, PETRI_PLACES=186, PETRI_TRANSITIONS=181} [2024-01-30 14:17:51,783 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 114 predicate places. [2024-01-30 14:17:51,783 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 181 transitions, 2244 flow [2024-01-30 14:17:51,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.375) internal successors, (219), 8 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) [2024-01-30 14:17:51,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:17:51,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:17:51,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-01-30 14:17:51,784 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:17:51,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:17:51,785 INFO L85 PathProgramCache]: Analyzing trace with hash -2121675522, now seen corresponding path program 4 times [2024-01-30 14:17:51,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:17:51,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562490935] [2024-01-30 14:17:51,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:17:51,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:17:51,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:17:52,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:17:52,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:17:52,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562490935] [2024-01-30 14:17:52,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562490935] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:17:52,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:17:52,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:17:52,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387675688] [2024-01-30 14:17:52,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:17:52,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-30 14:17:52,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:17:52,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-30 14:17:52,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-01-30 14:17:52,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:17:52,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 181 transitions, 2244 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:52,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:17:52,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:17:52,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:17:52,794 INFO L124 PetriNetUnfolderBase]: 2040/3619 cut-off events. [2024-01-30 14:17:52,794 INFO L125 PetriNetUnfolderBase]: For 24822/25060 co-relation queries the response was YES. [2024-01-30 14:17:52,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16700 conditions, 3619 events. 2040/3619 cut-off events. For 24822/25060 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 22548 event pairs, 696 based on Foata normal form. 118/3571 useless extension candidates. Maximal degree in co-relation 16618. Up to 2835 conditions per place. [2024-01-30 14:17:52,824 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 171 selfloop transitions, 43 changer transitions 0/232 dead transitions. [2024-01-30 14:17:52,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 232 transitions, 2944 flow [2024-01-30 14:17:52,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-30 14:17:52,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-30 14:17:52,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 262 transitions. [2024-01-30 14:17:52,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38529411764705884 [2024-01-30 14:17:52,826 INFO L175 Difference]: Start difference. First operand has 186 places, 181 transitions, 2244 flow. Second operand 10 states and 262 transitions. [2024-01-30 14:17:52,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 232 transitions, 2944 flow [2024-01-30 14:17:52,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 232 transitions, 2757 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-01-30 14:17:52,886 INFO L231 Difference]: Finished difference. Result has 191 places, 187 transitions, 2254 flow [2024-01-30 14:17:52,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=2069, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2254, PETRI_PLACES=191, PETRI_TRANSITIONS=187} [2024-01-30 14:17:52,886 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 119 predicate places. [2024-01-30 14:17:52,887 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 187 transitions, 2254 flow [2024-01-30 14:17:52,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:52,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:17:52,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:17:52,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-01-30 14:17:52,887 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:17:52,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:17:52,888 INFO L85 PathProgramCache]: Analyzing trace with hash -407644472, now seen corresponding path program 5 times [2024-01-30 14:17:52,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:17:52,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757337861] [2024-01-30 14:17:52,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:17:52,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:17:52,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:17:53,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:17:53,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:17:53,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757337861] [2024-01-30 14:17:53,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757337861] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:17:53,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:17:53,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:17:53,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877818566] [2024-01-30 14:17:53,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:17:53,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-30 14:17:53,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:17:53,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-30 14:17:53,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-01-30 14:17:53,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:17:53,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 187 transitions, 2254 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:53,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:17:53,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:17:53,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:17:53,853 INFO L124 PetriNetUnfolderBase]: 2108/3746 cut-off events. [2024-01-30 14:17:53,853 INFO L125 PetriNetUnfolderBase]: For 24875/25108 co-relation queries the response was YES. [2024-01-30 14:17:53,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16961 conditions, 3746 events. 2108/3746 cut-off events. For 24875/25108 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 23596 event pairs, 682 based on Foata normal form. 114/3693 useless extension candidates. Maximal degree in co-relation 16877. Up to 2435 conditions per place. [2024-01-30 14:17:53,895 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 152 selfloop transitions, 69 changer transitions 0/239 dead transitions. [2024-01-30 14:17:53,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 239 transitions, 2948 flow [2024-01-30 14:17:53,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-30 14:17:53,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-30 14:17:53,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 267 transitions. [2024-01-30 14:17:53,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3926470588235294 [2024-01-30 14:17:53,897 INFO L175 Difference]: Start difference. First operand has 191 places, 187 transitions, 2254 flow. Second operand 10 states and 267 transitions. [2024-01-30 14:17:53,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 239 transitions, 2948 flow [2024-01-30 14:17:53,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 239 transitions, 2865 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-01-30 14:17:53,962 INFO L231 Difference]: Finished difference. Result has 194 places, 189 transitions, 2330 flow [2024-01-30 14:17:53,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=2171, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2330, PETRI_PLACES=194, PETRI_TRANSITIONS=189} [2024-01-30 14:17:53,962 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 122 predicate places. [2024-01-30 14:17:53,962 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 189 transitions, 2330 flow [2024-01-30 14:17:53,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:53,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:17:53,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:17:53,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-01-30 14:17:53,963 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:17:53,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:17:53,963 INFO L85 PathProgramCache]: Analyzing trace with hash -315669292, now seen corresponding path program 6 times [2024-01-30 14:17:53,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:17:53,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119866928] [2024-01-30 14:17:53,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:17:53,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:17:53,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:17:54,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:17:54,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:17:54,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119866928] [2024-01-30 14:17:54,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119866928] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:17:54,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:17:54,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:17:54,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451346754] [2024-01-30 14:17:54,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:17:54,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-30 14:17:54,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:17:54,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-30 14:17:54,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-01-30 14:17:54,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:17:54,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 189 transitions, 2330 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:54,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:17:54,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:17:54,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:17:54,954 INFO L124 PetriNetUnfolderBase]: 2100/3715 cut-off events. [2024-01-30 14:17:54,954 INFO L125 PetriNetUnfolderBase]: For 26529/26775 co-relation queries the response was YES. [2024-01-30 14:17:54,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17197 conditions, 3715 events. 2100/3715 cut-off events. For 26529/26775 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 23253 event pairs, 720 based on Foata normal form. 100/3649 useless extension candidates. Maximal degree in co-relation 17112. Up to 2957 conditions per place. [2024-01-30 14:17:54,989 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 174 selfloop transitions, 43 changer transitions 0/235 dead transitions. [2024-01-30 14:17:54,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 235 transitions, 2940 flow [2024-01-30 14:17:54,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-30 14:17:54,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-30 14:17:54,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 280 transitions. [2024-01-30 14:17:54,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37433155080213903 [2024-01-30 14:17:54,991 INFO L175 Difference]: Start difference. First operand has 194 places, 189 transitions, 2330 flow. Second operand 11 states and 280 transitions. [2024-01-30 14:17:54,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 235 transitions, 2940 flow [2024-01-30 14:17:55,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 235 transitions, 2817 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-01-30 14:17:55,074 INFO L231 Difference]: Finished difference. Result has 198 places, 189 transitions, 2301 flow [2024-01-30 14:17:55,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=2207, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2301, PETRI_PLACES=198, PETRI_TRANSITIONS=189} [2024-01-30 14:17:55,074 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 126 predicate places. [2024-01-30 14:17:55,074 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 189 transitions, 2301 flow [2024-01-30 14:17:55,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:55,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:17:55,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:17:55,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-01-30 14:17:55,075 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:17:55,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:17:55,075 INFO L85 PathProgramCache]: Analyzing trace with hash 483052673, now seen corresponding path program 1 times [2024-01-30 14:17:55,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:17:55,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493712708] [2024-01-30 14:17:55,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:17:55,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:17:55,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:17:55,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:17:55,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:17:55,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493712708] [2024-01-30 14:17:55,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493712708] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:17:55,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:17:55,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-30 14:17:55,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550533284] [2024-01-30 14:17:55,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:17:55,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-30 14:17:55,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:17:55,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-30 14:17:55,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-30 14:17:55,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:17:55,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 189 transitions, 2301 flow. Second operand has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:55,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:17:55,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:17:55,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:17:55,994 INFO L124 PetriNetUnfolderBase]: 2075/3711 cut-off events. [2024-01-30 14:17:55,995 INFO L125 PetriNetUnfolderBase]: For 26685/26904 co-relation queries the response was YES. [2024-01-30 14:17:56,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16999 conditions, 3711 events. 2075/3711 cut-off events. For 26685/26904 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 23585 event pairs, 846 based on Foata normal form. 87/3626 useless extension candidates. Maximal degree in co-relation 16913. Up to 3112 conditions per place. [2024-01-30 14:17:56,041 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 169 selfloop transitions, 38 changer transitions 0/225 dead transitions. [2024-01-30 14:17:56,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 225 transitions, 2912 flow [2024-01-30 14:17:56,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-30 14:17:56,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-30 14:17:56,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 211 transitions. [2024-01-30 14:17:56,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38786764705882354 [2024-01-30 14:17:56,043 INFO L175 Difference]: Start difference. First operand has 198 places, 189 transitions, 2301 flow. Second operand 8 states and 211 transitions. [2024-01-30 14:17:56,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 225 transitions, 2912 flow [2024-01-30 14:17:56,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 225 transitions, 2813 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-01-30 14:17:56,115 INFO L231 Difference]: Finished difference. Result has 197 places, 202 transitions, 2415 flow [2024-01-30 14:17:56,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=2204, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2415, PETRI_PLACES=197, PETRI_TRANSITIONS=202} [2024-01-30 14:17:56,115 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 125 predicate places. [2024-01-30 14:17:56,115 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 202 transitions, 2415 flow [2024-01-30 14:17:56,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:56,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:17:56,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:17:56,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-01-30 14:17:56,116 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:17:56,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:17:56,117 INFO L85 PathProgramCache]: Analyzing trace with hash 456180262, now seen corresponding path program 4 times [2024-01-30 14:17:56,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:17:56,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949663195] [2024-01-30 14:17:56,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:17:56,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:17:56,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:17:56,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:17:56,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:17:56,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949663195] [2024-01-30 14:17:56,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949663195] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:17:56,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:17:56,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:17:56,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237095750] [2024-01-30 14:17:56,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:17:56,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-30 14:17:56,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:17:56,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-30 14:17:56,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-01-30 14:17:56,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:17:56,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 202 transitions, 2415 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:56,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:17:56,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:17:56,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:17:57,117 INFO L124 PetriNetUnfolderBase]: 1797/3294 cut-off events. [2024-01-30 14:17:57,118 INFO L125 PetriNetUnfolderBase]: For 24311/24362 co-relation queries the response was YES. [2024-01-30 14:17:57,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14975 conditions, 3294 events. 1797/3294 cut-off events. For 24311/24362 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 20985 event pairs, 582 based on Foata normal form. 66/3257 useless extension candidates. Maximal degree in co-relation 14887. Up to 1651 conditions per place. [2024-01-30 14:17:57,146 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 130 selfloop transitions, 93 changer transitions 0/239 dead transitions. [2024-01-30 14:17:57,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 239 transitions, 3060 flow [2024-01-30 14:17:57,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-30 14:17:57,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-30 14:17:57,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 260 transitions. [2024-01-30 14:17:57,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38235294117647056 [2024-01-30 14:17:57,147 INFO L175 Difference]: Start difference. First operand has 197 places, 202 transitions, 2415 flow. Second operand 10 states and 260 transitions. [2024-01-30 14:17:57,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 239 transitions, 3060 flow [2024-01-30 14:17:57,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 239 transitions, 3019 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-01-30 14:17:57,210 INFO L231 Difference]: Finished difference. Result has 205 places, 202 transitions, 2571 flow [2024-01-30 14:17:57,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=2374, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2571, PETRI_PLACES=205, PETRI_TRANSITIONS=202} [2024-01-30 14:17:57,211 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 133 predicate places. [2024-01-30 14:17:57,211 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 202 transitions, 2571 flow [2024-01-30 14:17:57,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:57,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:17:57,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:17:57,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-01-30 14:17:57,211 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:17:57,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:17:57,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1922842246, now seen corresponding path program 7 times [2024-01-30 14:17:57,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:17:57,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510326710] [2024-01-30 14:17:57,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:17:57,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:17:57,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:17:57,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:17:57,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:17:57,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510326710] [2024-01-30 14:17:57,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510326710] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:17:57,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:17:57,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:17:57,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973198978] [2024-01-30 14:17:57,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:17:57,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-30 14:17:57,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:17:57,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-30 14:17:57,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-01-30 14:17:57,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:17:57,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 202 transitions, 2571 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:57,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:17:57,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:17:57,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:17:58,134 INFO L124 PetriNetUnfolderBase]: 2015/3600 cut-off events. [2024-01-30 14:17:58,135 INFO L125 PetriNetUnfolderBase]: For 27610/27846 co-relation queries the response was YES. [2024-01-30 14:17:58,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16902 conditions, 3600 events. 2015/3600 cut-off events. For 27610/27846 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 22581 event pairs, 515 based on Foata normal form. 97/3545 useless extension candidates. Maximal degree in co-relation 16812. Up to 1859 conditions per place. [2024-01-30 14:17:58,173 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 132 selfloop transitions, 97 changer transitions 0/247 dead transitions. [2024-01-30 14:17:58,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 247 transitions, 3261 flow [2024-01-30 14:17:58,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-30 14:17:58,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-30 14:17:58,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 250 transitions. [2024-01-30 14:17:58,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4084967320261438 [2024-01-30 14:17:58,174 INFO L175 Difference]: Start difference. First operand has 205 places, 202 transitions, 2571 flow. Second operand 9 states and 250 transitions. [2024-01-30 14:17:58,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 247 transitions, 3261 flow [2024-01-30 14:17:58,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 247 transitions, 3071 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-01-30 14:17:58,247 INFO L231 Difference]: Finished difference. Result has 205 places, 204 transitions, 2605 flow [2024-01-30 14:17:58,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=2385, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2605, PETRI_PLACES=205, PETRI_TRANSITIONS=204} [2024-01-30 14:17:58,248 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 133 predicate places. [2024-01-30 14:17:58,248 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 204 transitions, 2605 flow [2024-01-30 14:17:58,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:58,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:17:58,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:17:58,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-01-30 14:17:58,249 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:17:58,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:17:58,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1877443852, now seen corresponding path program 8 times [2024-01-30 14:17:58,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:17:58,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592374686] [2024-01-30 14:17:58,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:17:58,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:17:58,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:17:58,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:17:58,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:17:58,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592374686] [2024-01-30 14:17:58,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592374686] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:17:58,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:17:58,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:17:58,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533622977] [2024-01-30 14:17:58,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:17:58,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-30 14:17:58,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:17:58,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-30 14:17:58,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-01-30 14:17:58,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:17:58,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 204 transitions, 2605 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:58,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:17:58,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:17:58,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:17:59,224 INFO L124 PetriNetUnfolderBase]: 1995/3575 cut-off events. [2024-01-30 14:17:59,224 INFO L125 PetriNetUnfolderBase]: For 28330/28570 co-relation queries the response was YES. [2024-01-30 14:17:59,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16812 conditions, 3575 events. 1995/3575 cut-off events. For 28330/28570 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 22336 event pairs, 562 based on Foata normal form. 84/3516 useless extension candidates. Maximal degree in co-relation 16721. Up to 2172 conditions per place. [2024-01-30 14:17:59,257 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 141 selfloop transitions, 81 changer transitions 0/240 dead transitions. [2024-01-30 14:17:59,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 240 transitions, 3198 flow [2024-01-30 14:17:59,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-30 14:17:59,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-30 14:17:59,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 241 transitions. [2024-01-30 14:17:59,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3937908496732026 [2024-01-30 14:17:59,259 INFO L175 Difference]: Start difference. First operand has 205 places, 204 transitions, 2605 flow. Second operand 9 states and 241 transitions. [2024-01-30 14:17:59,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 240 transitions, 3198 flow [2024-01-30 14:17:59,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 240 transitions, 3038 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-01-30 14:17:59,332 INFO L231 Difference]: Finished difference. Result has 208 places, 204 transitions, 2623 flow [2024-01-30 14:17:59,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=2445, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2623, PETRI_PLACES=208, PETRI_TRANSITIONS=204} [2024-01-30 14:17:59,332 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 136 predicate places. [2024-01-30 14:17:59,333 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 204 transitions, 2623 flow [2024-01-30 14:17:59,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:59,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:17:59,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:17:59,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-01-30 14:17:59,334 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:17:59,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:17:59,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1121501294, now seen corresponding path program 9 times [2024-01-30 14:17:59,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:17:59,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497092965] [2024-01-30 14:17:59,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:17:59,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:17:59,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:17:59,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:17:59,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:17:59,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497092965] [2024-01-30 14:17:59,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497092965] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:17:59,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:17:59,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:17:59,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893327873] [2024-01-30 14:17:59,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:17:59,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-30 14:17:59,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:17:59,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-30 14:17:59,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-01-30 14:17:59,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:17:59,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 204 transitions, 2623 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:17:59,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:17:59,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:17:59,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:00,245 INFO L124 PetriNetUnfolderBase]: 1951/3501 cut-off events. [2024-01-30 14:18:00,246 INFO L125 PetriNetUnfolderBase]: For 29779/30015 co-relation queries the response was YES. [2024-01-30 14:18:00,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16270 conditions, 3501 events. 1951/3501 cut-off events. For 29779/30015 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 21776 event pairs, 556 based on Foata normal form. 96/3454 useless extension candidates. Maximal degree in co-relation 16178. Up to 2160 conditions per place. [2024-01-30 14:18:00,284 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 136 selfloop transitions, 81 changer transitions 0/235 dead transitions. [2024-01-30 14:18:00,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 235 transitions, 3150 flow [2024-01-30 14:18:00,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-30 14:18:00,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-30 14:18:00,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 219 transitions. [2024-01-30 14:18:00,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025735294117647 [2024-01-30 14:18:00,286 INFO L175 Difference]: Start difference. First operand has 208 places, 204 transitions, 2623 flow. Second operand 8 states and 219 transitions. [2024-01-30 14:18:00,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 235 transitions, 3150 flow [2024-01-30 14:18:00,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 235 transitions, 2972 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-01-30 14:18:00,359 INFO L231 Difference]: Finished difference. Result has 207 places, 204 transitions, 2629 flow [2024-01-30 14:18:00,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=2445, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2629, PETRI_PLACES=207, PETRI_TRANSITIONS=204} [2024-01-30 14:18:00,360 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 135 predicate places. [2024-01-30 14:18:00,360 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 204 transitions, 2629 flow [2024-01-30 14:18:00,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:00,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:00,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:18:00,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-01-30 14:18:00,361 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:00,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:00,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1057722639, now seen corresponding path program 2 times [2024-01-30 14:18:00,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:00,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895810197] [2024-01-30 14:18:00,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:00,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:00,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:00,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:00,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:00,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895810197] [2024-01-30 14:18:00,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895810197] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:00,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:00,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-30 14:18:00,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732779010] [2024-01-30 14:18:00,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:00,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-30 14:18:00,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:00,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-30 14:18:00,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-30 14:18:00,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:18:00,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 204 transitions, 2629 flow. Second operand has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:00,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:00,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:18:00,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:01,238 INFO L124 PetriNetUnfolderBase]: 1957/3507 cut-off events. [2024-01-30 14:18:01,238 INFO L125 PetriNetUnfolderBase]: For 27940/28173 co-relation queries the response was YES. [2024-01-30 14:18:01,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16328 conditions, 3507 events. 1957/3507 cut-off events. For 27940/28173 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 21983 event pairs, 790 based on Foata normal form. 83/3422 useless extension candidates. Maximal degree in co-relation 16236. Up to 2914 conditions per place. [2024-01-30 14:18:01,272 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 169 selfloop transitions, 42 changer transitions 0/229 dead transitions. [2024-01-30 14:18:01,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 229 transitions, 3154 flow [2024-01-30 14:18:01,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:18:01,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:18:01,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 191 transitions. [2024-01-30 14:18:01,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4012605042016807 [2024-01-30 14:18:01,274 INFO L175 Difference]: Start difference. First operand has 207 places, 204 transitions, 2629 flow. Second operand 7 states and 191 transitions. [2024-01-30 14:18:01,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 229 transitions, 3154 flow [2024-01-30 14:18:01,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 229 transitions, 2978 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-01-30 14:18:01,342 INFO L231 Difference]: Finished difference. Result has 206 places, 207 transitions, 2565 flow [2024-01-30 14:18:01,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=2453, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2565, PETRI_PLACES=206, PETRI_TRANSITIONS=207} [2024-01-30 14:18:01,342 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 134 predicate places. [2024-01-30 14:18:01,342 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 207 transitions, 2565 flow [2024-01-30 14:18:01,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:01,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:01,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:18:01,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-01-30 14:18:01,343 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:01,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:01,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1650043200, now seen corresponding path program 10 times [2024-01-30 14:18:01,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:01,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176860736] [2024-01-30 14:18:01,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:01,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:01,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:01,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:01,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:01,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176860736] [2024-01-30 14:18:01,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176860736] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:01,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:01,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:18:01,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47383849] [2024-01-30 14:18:01,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:01,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-30 14:18:01,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:01,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-30 14:18:01,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-01-30 14:18:01,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:18:01,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 207 transitions, 2565 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:01,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:01,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:18:01,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:02,309 INFO L124 PetriNetUnfolderBase]: 2067/3654 cut-off events. [2024-01-30 14:18:02,309 INFO L125 PetriNetUnfolderBase]: For 25056/25294 co-relation queries the response was YES. [2024-01-30 14:18:02,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16600 conditions, 3654 events. 2067/3654 cut-off events. For 25056/25294 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 22625 event pairs, 501 based on Foata normal form. 115/3618 useless extension candidates. Maximal degree in co-relation 16508. Up to 1926 conditions per place. [2024-01-30 14:18:02,341 INFO L140 encePairwiseOnDemand]: 54/68 looper letters, 130 selfloop transitions, 107 changer transitions 0/255 dead transitions. [2024-01-30 14:18:02,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 255 transitions, 3247 flow [2024-01-30 14:18:02,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-30 14:18:02,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-30 14:18:02,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 266 transitions. [2024-01-30 14:18:02,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3911764705882353 [2024-01-30 14:18:02,346 INFO L175 Difference]: Start difference. First operand has 206 places, 207 transitions, 2565 flow. Second operand 10 states and 266 transitions. [2024-01-30 14:18:02,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 255 transitions, 3247 flow [2024-01-30 14:18:02,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 255 transitions, 3184 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-01-30 14:18:02,405 INFO L231 Difference]: Finished difference. Result has 213 places, 216 transitions, 2826 flow [2024-01-30 14:18:02,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=2502, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2826, PETRI_PLACES=213, PETRI_TRANSITIONS=216} [2024-01-30 14:18:02,405 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 141 predicate places. [2024-01-30 14:18:02,406 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 216 transitions, 2826 flow [2024-01-30 14:18:02,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:02,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:02,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:18:02,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-01-30 14:18:02,406 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:02,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:02,407 INFO L85 PathProgramCache]: Analyzing trace with hash -705402375, now seen corresponding path program 3 times [2024-01-30 14:18:02,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:02,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608333395] [2024-01-30 14:18:02,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:02,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:02,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:02,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:02,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:02,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608333395] [2024-01-30 14:18:02,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608333395] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:02,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:02,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-30 14:18:02,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367706824] [2024-01-30 14:18:02,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:02,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-30 14:18:02,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:02,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-30 14:18:02,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-30 14:18:02,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:18:02,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 216 transitions, 2826 flow. Second operand has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:02,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:02,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:18:02,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:03,223 INFO L124 PetriNetUnfolderBase]: 2033/3622 cut-off events. [2024-01-30 14:18:03,223 INFO L125 PetriNetUnfolderBase]: For 28154/28385 co-relation queries the response was YES. [2024-01-30 14:18:03,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17487 conditions, 3622 events. 2033/3622 cut-off events. For 28154/28385 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 22813 event pairs, 760 based on Foata normal form. 80/3541 useless extension candidates. Maximal degree in co-relation 17394. Up to 3030 conditions per place. [2024-01-30 14:18:03,253 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 178 selfloop transitions, 42 changer transitions 0/238 dead transitions. [2024-01-30 14:18:03,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 238 transitions, 3357 flow [2024-01-30 14:18:03,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:18:03,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:18:03,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 188 transitions. [2024-01-30 14:18:03,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3949579831932773 [2024-01-30 14:18:03,255 INFO L175 Difference]: Start difference. First operand has 213 places, 216 transitions, 2826 flow. Second operand 7 states and 188 transitions. [2024-01-30 14:18:03,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 238 transitions, 3357 flow [2024-01-30 14:18:03,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 238 transitions, 3171 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-01-30 14:18:03,317 INFO L231 Difference]: Finished difference. Result has 212 places, 218 transitions, 2744 flow [2024-01-30 14:18:03,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=2640, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2744, PETRI_PLACES=212, PETRI_TRANSITIONS=218} [2024-01-30 14:18:03,317 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 140 predicate places. [2024-01-30 14:18:03,317 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 218 transitions, 2744 flow [2024-01-30 14:18:03,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:03,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:03,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:18:03,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-01-30 14:18:03,318 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:03,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:03,320 INFO L85 PathProgramCache]: Analyzing trace with hash -704328225, now seen corresponding path program 4 times [2024-01-30 14:18:03,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:03,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225178266] [2024-01-30 14:18:03,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:03,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:03,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:03,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:03,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:03,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225178266] [2024-01-30 14:18:03,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225178266] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:03,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:03,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-30 14:18:03,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122847201] [2024-01-30 14:18:03,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:03,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-30 14:18:03,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:03,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-30 14:18:03,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-30 14:18:03,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:18:03,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 218 transitions, 2744 flow. Second operand has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:03,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:03,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:18:03,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:04,053 INFO L124 PetriNetUnfolderBase]: 2027/3612 cut-off events. [2024-01-30 14:18:04,053 INFO L125 PetriNetUnfolderBase]: For 25283/25514 co-relation queries the response was YES. [2024-01-30 14:18:04,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16930 conditions, 3612 events. 2027/3612 cut-off events. For 25283/25514 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 22738 event pairs, 762 based on Foata normal form. 76/3527 useless extension candidates. Maximal degree in co-relation 16837. Up to 3030 conditions per place. [2024-01-30 14:18:04,093 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 174 selfloop transitions, 44 changer transitions 0/236 dead transitions. [2024-01-30 14:18:04,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 236 transitions, 3243 flow [2024-01-30 14:18:04,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:18:04,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:18:04,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 186 transitions. [2024-01-30 14:18:04,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3907563025210084 [2024-01-30 14:18:04,094 INFO L175 Difference]: Start difference. First operand has 212 places, 218 transitions, 2744 flow. Second operand 7 states and 186 transitions. [2024-01-30 14:18:04,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 236 transitions, 3243 flow [2024-01-30 14:18:04,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 236 transitions, 3199 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-30 14:18:04,176 INFO L231 Difference]: Finished difference. Result has 217 places, 218 transitions, 2793 flow [2024-01-30 14:18:04,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=2700, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2793, PETRI_PLACES=217, PETRI_TRANSITIONS=218} [2024-01-30 14:18:04,177 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 145 predicate places. [2024-01-30 14:18:04,177 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 218 transitions, 2793 flow [2024-01-30 14:18:04,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:04,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:04,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:18:04,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-01-30 14:18:04,178 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:04,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:04,180 INFO L85 PathProgramCache]: Analyzing trace with hash 2027190944, now seen corresponding path program 1 times [2024-01-30 14:18:04,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:04,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728355894] [2024-01-30 14:18:04,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:04,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:04,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:04,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:04,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:04,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728355894] [2024-01-30 14:18:04,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728355894] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:04,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:04,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:18:04,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765292268] [2024-01-30 14:18:04,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:04,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-30 14:18:04,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:04,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-30 14:18:04,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-30 14:18:04,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-01-30 14:18:04,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 218 transitions, 2793 flow. Second operand has 9 states, 9 states have (on average 27.444444444444443) internal successors, (247), 9 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) [2024-01-30 14:18:04,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:04,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-01-30 14:18:04,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:04,924 INFO L124 PetriNetUnfolderBase]: 1569/3004 cut-off events. [2024-01-30 14:18:04,924 INFO L125 PetriNetUnfolderBase]: For 26498/26705 co-relation queries the response was YES. [2024-01-30 14:18:04,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14599 conditions, 3004 events. 1569/3004 cut-off events. For 26498/26705 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 19888 event pairs, 429 based on Foata normal form. 88/2968 useless extension candidates. Maximal degree in co-relation 14504. Up to 2310 conditions per place. [2024-01-30 14:18:04,952 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 173 selfloop transitions, 27 changer transitions 0/233 dead transitions. [2024-01-30 14:18:04,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 233 transitions, 3263 flow [2024-01-30 14:18:04,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-30 14:18:04,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-30 14:18:04,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 214 transitions. [2024-01-30 14:18:04,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5245098039215687 [2024-01-30 14:18:04,953 INFO L175 Difference]: Start difference. First operand has 217 places, 218 transitions, 2793 flow. Second operand 6 states and 214 transitions. [2024-01-30 14:18:04,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 233 transitions, 3263 flow [2024-01-30 14:18:05,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 233 transitions, 3160 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-01-30 14:18:05,013 INFO L231 Difference]: Finished difference. Result has 218 places, 220 transitions, 2789 flow [2024-01-30 14:18:05,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=2690, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2789, PETRI_PLACES=218, PETRI_TRANSITIONS=220} [2024-01-30 14:18:05,014 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 146 predicate places. [2024-01-30 14:18:05,014 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 220 transitions, 2789 flow [2024-01-30 14:18:05,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 27.444444444444443) internal successors, (247), 9 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) [2024-01-30 14:18:05,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:05,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:18:05,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-01-30 14:18:05,015 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:05,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:05,015 INFO L85 PathProgramCache]: Analyzing trace with hash 273696748, now seen corresponding path program 1 times [2024-01-30 14:18:05,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:05,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046722326] [2024-01-30 14:18:05,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:05,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:05,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:05,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:05,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:05,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046722326] [2024-01-30 14:18:05,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046722326] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:05,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:05,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:18:05,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769279355] [2024-01-30 14:18:05,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:05,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-30 14:18:05,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:05,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-30 14:18:05,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-01-30 14:18:05,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:18:05,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 220 transitions, 2789 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:05,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:05,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:18:05,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:06,045 INFO L124 PetriNetUnfolderBase]: 1971/3566 cut-off events. [2024-01-30 14:18:06,046 INFO L125 PetriNetUnfolderBase]: For 27287/27458 co-relation queries the response was YES. [2024-01-30 14:18:06,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17021 conditions, 3566 events. 1971/3566 cut-off events. For 27287/27458 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 22704 event pairs, 653 based on Foata normal form. 63/3534 useless extension candidates. Maximal degree in co-relation 16925. Up to 2993 conditions per place. [2024-01-30 14:18:06,080 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 186 selfloop transitions, 53 changer transitions 0/257 dead transitions. [2024-01-30 14:18:06,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 257 transitions, 3667 flow [2024-01-30 14:18:06,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-30 14:18:06,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-30 14:18:06,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-01-30 14:18:06,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37683823529411764 [2024-01-30 14:18:06,082 INFO L175 Difference]: Start difference. First operand has 218 places, 220 transitions, 2789 flow. Second operand 8 states and 205 transitions. [2024-01-30 14:18:06,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 257 transitions, 3667 flow [2024-01-30 14:18:06,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 257 transitions, 3587 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-01-30 14:18:06,157 INFO L231 Difference]: Finished difference. Result has 223 places, 242 transitions, 3226 flow [2024-01-30 14:18:06,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=2709, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3226, PETRI_PLACES=223, PETRI_TRANSITIONS=242} [2024-01-30 14:18:06,159 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 151 predicate places. [2024-01-30 14:18:06,160 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 242 transitions, 3226 flow [2024-01-30 14:18:06,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:06,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:06,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:18:06,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-01-30 14:18:06,160 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:06,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:06,161 INFO L85 PathProgramCache]: Analyzing trace with hash -899361068, now seen corresponding path program 1 times [2024-01-30 14:18:06,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:06,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7559698] [2024-01-30 14:18:06,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:06,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:06,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:06,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:06,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:06,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7559698] [2024-01-30 14:18:06,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7559698] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:06,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:06,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:18:06,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623995569] [2024-01-30 14:18:06,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:06,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-30 14:18:06,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:06,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-30 14:18:06,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=40, Unknown=0, NotChecked=0, Total=72 [2024-01-30 14:18:06,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-01-30 14:18:06,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 242 transitions, 3226 flow. Second operand has 9 states, 9 states have (on average 27.444444444444443) internal successors, (247), 9 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) [2024-01-30 14:18:06,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:06,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-01-30 14:18:06,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:06,995 INFO L124 PetriNetUnfolderBase]: 1562/2981 cut-off events. [2024-01-30 14:18:06,995 INFO L125 PetriNetUnfolderBase]: For 28219/28442 co-relation queries the response was YES. [2024-01-30 14:18:07,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15054 conditions, 2981 events. 1562/2981 cut-off events. For 28219/28442 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 19772 event pairs, 441 based on Foata normal form. 113/3009 useless extension candidates. Maximal degree in co-relation 14957. Up to 2296 conditions per place. [2024-01-30 14:18:07,037 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 187 selfloop transitions, 43 changer transitions 0/263 dead transitions. [2024-01-30 14:18:07,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 263 transitions, 3871 flow [2024-01-30 14:18:07,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-30 14:18:07,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-30 14:18:07,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 213 transitions. [2024-01-30 14:18:07,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5220588235294118 [2024-01-30 14:18:07,038 INFO L175 Difference]: Start difference. First operand has 223 places, 242 transitions, 3226 flow. Second operand 6 states and 213 transitions. [2024-01-30 14:18:07,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 263 transitions, 3871 flow [2024-01-30 14:18:07,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 263 transitions, 3802 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-01-30 14:18:07,120 INFO L231 Difference]: Finished difference. Result has 228 places, 251 transitions, 3445 flow [2024-01-30 14:18:07,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=3157, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3445, PETRI_PLACES=228, PETRI_TRANSITIONS=251} [2024-01-30 14:18:07,121 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 156 predicate places. [2024-01-30 14:18:07,121 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 251 transitions, 3445 flow [2024-01-30 14:18:07,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 27.444444444444443) internal successors, (247), 9 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) [2024-01-30 14:18:07,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:07,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:18:07,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-01-30 14:18:07,122 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:07,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:07,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1155484434, now seen corresponding path program 1 times [2024-01-30 14:18:07,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:07,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340850614] [2024-01-30 14:18:07,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:07,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:07,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:07,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:07,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:07,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340850614] [2024-01-30 14:18:07,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340850614] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:07,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:07,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-30 14:18:07,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659544055] [2024-01-30 14:18:07,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:07,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-30 14:18:07,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:07,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-30 14:18:07,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-30 14:18:07,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-01-30 14:18:07,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 251 transitions, 3445 flow. Second operand has 8 states, 8 states have (on average 27.5) internal successors, (220), 8 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:07,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:07,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-01-30 14:18:07,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:07,871 INFO L124 PetriNetUnfolderBase]: 1587/3036 cut-off events. [2024-01-30 14:18:07,871 INFO L125 PetriNetUnfolderBase]: For 30607/30840 co-relation queries the response was YES. [2024-01-30 14:18:07,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15470 conditions, 3036 events. 1587/3036 cut-off events. For 30607/30840 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 20236 event pairs, 410 based on Foata normal form. 99/3049 useless extension candidates. Maximal degree in co-relation 15370. Up to 2031 conditions per place. [2024-01-30 14:18:07,906 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 184 selfloop transitions, 63 changer transitions 0/280 dead transitions. [2024-01-30 14:18:07,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 280 transitions, 4116 flow [2024-01-30 14:18:07,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:18:07,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:18:07,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 256 transitions. [2024-01-30 14:18:07,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5378151260504201 [2024-01-30 14:18:07,908 INFO L175 Difference]: Start difference. First operand has 228 places, 251 transitions, 3445 flow. Second operand 7 states and 256 transitions. [2024-01-30 14:18:07,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 280 transitions, 4116 flow [2024-01-30 14:18:07,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 280 transitions, 4049 flow, removed 14 selfloop flow, removed 2 redundant places. [2024-01-30 14:18:07,981 INFO L231 Difference]: Finished difference. Result has 234 places, 257 transitions, 3573 flow [2024-01-30 14:18:07,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=3378, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3573, PETRI_PLACES=234, PETRI_TRANSITIONS=257} [2024-01-30 14:18:07,982 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 162 predicate places. [2024-01-30 14:18:07,982 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 257 transitions, 3573 flow [2024-01-30 14:18:07,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.5) internal successors, (220), 8 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:07,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:07,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:18:07,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-01-30 14:18:07,983 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:07,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:07,983 INFO L85 PathProgramCache]: Analyzing trace with hash 566365042, now seen corresponding path program 1 times [2024-01-30 14:18:07,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:07,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252930768] [2024-01-30 14:18:07,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:07,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:07,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:08,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:08,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:08,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252930768] [2024-01-30 14:18:08,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252930768] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:08,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:08,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:18:08,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154976697] [2024-01-30 14:18:08,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:08,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-30 14:18:08,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:08,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-30 14:18:08,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-30 14:18:08,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:18:08,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 257 transitions, 3573 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:08,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:08,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:18:08,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:08,880 INFO L124 PetriNetUnfolderBase]: 2037/3699 cut-off events. [2024-01-30 14:18:08,881 INFO L125 PetriNetUnfolderBase]: For 33041/33205 co-relation queries the response was YES. [2024-01-30 14:18:08,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18639 conditions, 3699 events. 2037/3699 cut-off events. For 33041/33205 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 23877 event pairs, 503 based on Foata normal form. 56/3664 useless extension candidates. Maximal degree in co-relation 18537. Up to 3018 conditions per place. [2024-01-30 14:18:08,920 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 238 selfloop transitions, 40 changer transitions 0/296 dead transitions. [2024-01-30 14:18:08,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 296 transitions, 4348 flow [2024-01-30 14:18:08,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:18:08,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:18:08,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 195 transitions. [2024-01-30 14:18:08,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096638655462185 [2024-01-30 14:18:08,921 INFO L175 Difference]: Start difference. First operand has 234 places, 257 transitions, 3573 flow. Second operand 7 states and 195 transitions. [2024-01-30 14:18:08,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 296 transitions, 4348 flow [2024-01-30 14:18:09,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 296 transitions, 4225 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-01-30 14:18:09,012 INFO L231 Difference]: Finished difference. Result has 238 places, 270 transitions, 3684 flow [2024-01-30 14:18:09,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=3460, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3684, PETRI_PLACES=238, PETRI_TRANSITIONS=270} [2024-01-30 14:18:09,012 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 166 predicate places. [2024-01-30 14:18:09,013 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 270 transitions, 3684 flow [2024-01-30 14:18:09,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:09,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:09,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:18:09,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-01-30 14:18:09,013 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:09,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:09,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1578793868, now seen corresponding path program 2 times [2024-01-30 14:18:09,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:09,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959014272] [2024-01-30 14:18:09,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:09,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:09,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:09,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:09,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:09,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959014272] [2024-01-30 14:18:09,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959014272] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:09,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:09,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:18:09,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991582882] [2024-01-30 14:18:09,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:09,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-30 14:18:09,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:09,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-30 14:18:09,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-30 14:18:09,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:18:09,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 270 transitions, 3684 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:09,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:09,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:18:09,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:10,001 INFO L124 PetriNetUnfolderBase]: 2017/3663 cut-off events. [2024-01-30 14:18:10,001 INFO L125 PetriNetUnfolderBase]: For 31611/31775 co-relation queries the response was YES. [2024-01-30 14:18:10,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18252 conditions, 3663 events. 2017/3663 cut-off events. For 31611/31775 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 23544 event pairs, 502 based on Foata normal form. 64/3636 useless extension candidates. Maximal degree in co-relation 18149. Up to 3018 conditions per place. [2024-01-30 14:18:10,045 INFO L140 encePairwiseOnDemand]: 62/68 looper letters, 232 selfloop transitions, 38 changer transitions 0/288 dead transitions. [2024-01-30 14:18:10,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 288 transitions, 4278 flow [2024-01-30 14:18:10,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-30 14:18:10,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-30 14:18:10,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 166 transitions. [2024-01-30 14:18:10,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4068627450980392 [2024-01-30 14:18:10,046 INFO L175 Difference]: Start difference. First operand has 238 places, 270 transitions, 3684 flow. Second operand 6 states and 166 transitions. [2024-01-30 14:18:10,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 288 transitions, 4278 flow [2024-01-30 14:18:10,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 288 transitions, 4228 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-01-30 14:18:10,134 INFO L231 Difference]: Finished difference. Result has 240 places, 270 transitions, 3719 flow [2024-01-30 14:18:10,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=3634, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3719, PETRI_PLACES=240, PETRI_TRANSITIONS=270} [2024-01-30 14:18:10,135 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 168 predicate places. [2024-01-30 14:18:10,135 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 270 transitions, 3719 flow [2024-01-30 14:18:10,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:10,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:10,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:18:10,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-01-30 14:18:10,135 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:10,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:10,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1080007772, now seen corresponding path program 2 times [2024-01-30 14:18:10,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:10,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143104743] [2024-01-30 14:18:10,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:10,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:10,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:10,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:10,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:10,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143104743] [2024-01-30 14:18:10,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143104743] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:10,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:10,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-30 14:18:10,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076094470] [2024-01-30 14:18:10,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:10,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-30 14:18:10,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:10,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-30 14:18:10,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-30 14:18:10,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-01-30 14:18:10,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 270 transitions, 3719 flow. Second operand has 8 states, 8 states have (on average 27.5) internal successors, (220), 8 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:10,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:10,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-01-30 14:18:10,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:10,896 INFO L124 PetriNetUnfolderBase]: 1608/3080 cut-off events. [2024-01-30 14:18:10,897 INFO L125 PetriNetUnfolderBase]: For 31304/31543 co-relation queries the response was YES. [2024-01-30 14:18:10,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15780 conditions, 3080 events. 1608/3080 cut-off events. For 31304/31543 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 20615 event pairs, 337 based on Foata normal form. 99/3090 useless extension candidates. Maximal degree in co-relation 15678. Up to 2015 conditions per place. [2024-01-30 14:18:10,939 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 188 selfloop transitions, 73 changer transitions 0/294 dead transitions. [2024-01-30 14:18:10,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 294 transitions, 4357 flow [2024-01-30 14:18:10,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:18:10,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:18:10,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 255 transitions. [2024-01-30 14:18:10,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5357142857142857 [2024-01-30 14:18:10,941 INFO L175 Difference]: Start difference. First operand has 240 places, 270 transitions, 3719 flow. Second operand 7 states and 255 transitions. [2024-01-30 14:18:10,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 294 transitions, 4357 flow [2024-01-30 14:18:11,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 294 transitions, 4283 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-01-30 14:18:11,028 INFO L231 Difference]: Finished difference. Result has 242 places, 271 transitions, 3803 flow [2024-01-30 14:18:11,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=3645, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3803, PETRI_PLACES=242, PETRI_TRANSITIONS=271} [2024-01-30 14:18:11,029 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 170 predicate places. [2024-01-30 14:18:11,029 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 271 transitions, 3803 flow [2024-01-30 14:18:11,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.5) internal successors, (220), 8 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:11,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:11,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:18:11,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-01-30 14:18:11,030 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:11,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:11,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1664474350, now seen corresponding path program 3 times [2024-01-30 14:18:11,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:11,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497050572] [2024-01-30 14:18:11,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:11,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:11,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:11,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:11,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:11,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497050572] [2024-01-30 14:18:11,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497050572] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:11,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:11,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:18:11,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069651427] [2024-01-30 14:18:11,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:11,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-30 14:18:11,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:11,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-30 14:18:11,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-30 14:18:11,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:18:11,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 271 transitions, 3803 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:11,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:11,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:18:11,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:11,954 INFO L124 PetriNetUnfolderBase]: 1998/3620 cut-off events. [2024-01-30 14:18:11,955 INFO L125 PetriNetUnfolderBase]: For 32532/32700 co-relation queries the response was YES. [2024-01-30 14:18:11,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18228 conditions, 3620 events. 1998/3620 cut-off events. For 32532/32700 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 23284 event pairs, 519 based on Foata normal form. 56/3583 useless extension candidates. Maximal degree in co-relation 18127. Up to 3003 conditions per place. [2024-01-30 14:18:11,992 INFO L140 encePairwiseOnDemand]: 62/68 looper letters, 234 selfloop transitions, 36 changer transitions 0/288 dead transitions. [2024-01-30 14:18:11,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 288 transitions, 4391 flow [2024-01-30 14:18:11,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-30 14:18:11,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-30 14:18:11,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 166 transitions. [2024-01-30 14:18:11,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4068627450980392 [2024-01-30 14:18:11,993 INFO L175 Difference]: Start difference. First operand has 242 places, 271 transitions, 3803 flow. Second operand 6 states and 166 transitions. [2024-01-30 14:18:11,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 288 transitions, 4391 flow [2024-01-30 14:18:12,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 288 transitions, 4244 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-01-30 14:18:12,087 INFO L231 Difference]: Finished difference. Result has 237 places, 270 transitions, 3714 flow [2024-01-30 14:18:12,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=3642, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3714, PETRI_PLACES=237, PETRI_TRANSITIONS=270} [2024-01-30 14:18:12,088 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 165 predicate places. [2024-01-30 14:18:12,088 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 270 transitions, 3714 flow [2024-01-30 14:18:12,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:12,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:12,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:18:12,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-01-30 14:18:12,089 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:12,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:12,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1056812224, now seen corresponding path program 1 times [2024-01-30 14:18:12,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:12,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043938813] [2024-01-30 14:18:12,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:12,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:12,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:12,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:12,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:12,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043938813] [2024-01-30 14:18:12,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043938813] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:12,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:12,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-30 14:18:12,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506123047] [2024-01-30 14:18:12,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:12,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-30 14:18:12,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:12,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-30 14:18:12,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-01-30 14:18:12,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-01-30 14:18:12,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 270 transitions, 3714 flow. Second operand has 8 states, 8 states have (on average 27.5) internal successors, (220), 8 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:12,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:12,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-01-30 14:18:12,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:12,795 INFO L124 PetriNetUnfolderBase]: 1626/3098 cut-off events. [2024-01-30 14:18:12,795 INFO L125 PetriNetUnfolderBase]: For 32487/32729 co-relation queries the response was YES. [2024-01-30 14:18:12,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15869 conditions, 3098 events. 1626/3098 cut-off events. For 32487/32729 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 20649 event pairs, 429 based on Foata normal form. 130/3139 useless extension candidates. Maximal degree in co-relation 15773. Up to 2363 conditions per place. [2024-01-30 14:18:12,830 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 192 selfloop transitions, 68 changer transitions 0/293 dead transitions. [2024-01-30 14:18:12,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 293 transitions, 4444 flow [2024-01-30 14:18:12,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-30 14:18:12,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-30 14:18:12,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 213 transitions. [2024-01-30 14:18:12,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5220588235294118 [2024-01-30 14:18:12,831 INFO L175 Difference]: Start difference. First operand has 237 places, 270 transitions, 3714 flow. Second operand 6 states and 213 transitions. [2024-01-30 14:18:12,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 293 transitions, 4444 flow [2024-01-30 14:18:12,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 293 transitions, 4346 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-01-30 14:18:12,901 INFO L231 Difference]: Finished difference. Result has 239 places, 285 transitions, 4017 flow [2024-01-30 14:18:12,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=3616, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4017, PETRI_PLACES=239, PETRI_TRANSITIONS=285} [2024-01-30 14:18:12,902 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 167 predicate places. [2024-01-30 14:18:12,902 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 285 transitions, 4017 flow [2024-01-30 14:18:12,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.5) internal successors, (220), 8 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:12,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:12,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:18:12,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-01-30 14:18:12,902 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:12,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:12,903 INFO L85 PathProgramCache]: Analyzing trace with hash -721391174, now seen corresponding path program 1 times [2024-01-30 14:18:12,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:12,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142472104] [2024-01-30 14:18:12,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:12,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:12,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:12,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:12,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:12,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142472104] [2024-01-30 14:18:12,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142472104] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:12,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:12,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-30 14:18:12,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365761767] [2024-01-30 14:18:12,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:12,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-30 14:18:12,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:12,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-30 14:18:12,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-30 14:18:12,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-01-30 14:18:12,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 285 transitions, 4017 flow. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 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) [2024-01-30 14:18:12,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:12,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-01-30 14:18:12,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:13,515 INFO L124 PetriNetUnfolderBase]: 1636/3096 cut-off events. [2024-01-30 14:18:13,515 INFO L125 PetriNetUnfolderBase]: For 37406/37639 co-relation queries the response was YES. [2024-01-30 14:18:13,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16436 conditions, 3096 events. 1636/3096 cut-off events. For 37406/37639 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 20910 event pairs, 263 based on Foata normal form. 133/3073 useless extension candidates. Maximal degree in co-relation 16338. Up to 941 conditions per place. [2024-01-30 14:18:13,555 INFO L140 encePairwiseOnDemand]: 63/68 looper letters, 181 selfloop transitions, 96 changer transitions 0/310 dead transitions. [2024-01-30 14:18:13,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 310 transitions, 4772 flow [2024-01-30 14:18:13,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-30 14:18:13,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-30 14:18:13,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 166 transitions. [2024-01-30 14:18:13,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6102941176470589 [2024-01-30 14:18:13,556 INFO L175 Difference]: Start difference. First operand has 239 places, 285 transitions, 4017 flow. Second operand 4 states and 166 transitions. [2024-01-30 14:18:13,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 310 transitions, 4772 flow [2024-01-30 14:18:13,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 310 transitions, 4686 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-01-30 14:18:13,645 INFO L231 Difference]: Finished difference. Result has 239 places, 286 transitions, 4234 flow [2024-01-30 14:18:13,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=3931, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=4234, PETRI_PLACES=239, PETRI_TRANSITIONS=286} [2024-01-30 14:18:13,646 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 167 predicate places. [2024-01-30 14:18:13,646 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 286 transitions, 4234 flow [2024-01-30 14:18:13,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 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) [2024-01-30 14:18:13,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:13,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:18:13,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-01-30 14:18:13,647 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:13,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:13,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1223633022, now seen corresponding path program 2 times [2024-01-30 14:18:13,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:13,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831573747] [2024-01-30 14:18:13,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:13,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:13,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:13,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:13,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:13,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831573747] [2024-01-30 14:18:13,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831573747] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:13,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:13,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-30 14:18:13,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664951116] [2024-01-30 14:18:13,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:13,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-30 14:18:13,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:13,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-30 14:18:13,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-30 14:18:13,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-01-30 14:18:13,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 286 transitions, 4234 flow. Second operand has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:13,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:13,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-01-30 14:18:13,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:14,123 INFO L124 PetriNetUnfolderBase]: 1171/2261 cut-off events. [2024-01-30 14:18:14,123 INFO L125 PetriNetUnfolderBase]: For 34090/34289 co-relation queries the response was YES. [2024-01-30 14:18:14,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13371 conditions, 2261 events. 1171/2261 cut-off events. For 34090/34289 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 15050 event pairs, 280 based on Foata normal form. 134/2274 useless extension candidates. Maximal degree in co-relation 13272. Up to 863 conditions per place. [2024-01-30 14:18:14,147 INFO L140 encePairwiseOnDemand]: 63/68 looper letters, 171 selfloop transitions, 85 changer transitions 1/290 dead transitions. [2024-01-30 14:18:14,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 290 transitions, 4763 flow [2024-01-30 14:18:14,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-30 14:18:14,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-30 14:18:14,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 183 transitions. [2024-01-30 14:18:14,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.538235294117647 [2024-01-30 14:18:14,149 INFO L175 Difference]: Start difference. First operand has 239 places, 286 transitions, 4234 flow. Second operand 5 states and 183 transitions. [2024-01-30 14:18:14,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 290 transitions, 4763 flow [2024-01-30 14:18:14,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 290 transitions, 4613 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-01-30 14:18:14,247 INFO L231 Difference]: Finished difference. Result has 237 places, 278 transitions, 4299 flow [2024-01-30 14:18:14,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=4029, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4299, PETRI_PLACES=237, PETRI_TRANSITIONS=278} [2024-01-30 14:18:14,247 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 165 predicate places. [2024-01-30 14:18:14,248 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 278 transitions, 4299 flow [2024-01-30 14:18:14,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:14,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:14,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:18:14,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-01-30 14:18:14,248 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:14,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:14,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1681945132, now seen corresponding path program 2 times [2024-01-30 14:18:14,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:14,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960340935] [2024-01-30 14:18:14,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:14,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:14,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:14,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:14,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:14,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960340935] [2024-01-30 14:18:14,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960340935] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:14,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:14,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:18:14,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820214625] [2024-01-30 14:18:14,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:14,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-30 14:18:14,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:14,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-30 14:18:14,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-30 14:18:14,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:18:14,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 278 transitions, 4299 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:14,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:14,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:18:14,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:15,076 INFO L124 PetriNetUnfolderBase]: 1603/2919 cut-off events. [2024-01-30 14:18:15,076 INFO L125 PetriNetUnfolderBase]: For 35884/36051 co-relation queries the response was YES. [2024-01-30 14:18:15,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16869 conditions, 2919 events. 1603/2919 cut-off events. For 35884/36051 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 18705 event pairs, 307 based on Foata normal form. 66/2909 useless extension candidates. Maximal degree in co-relation 16771. Up to 2102 conditions per place. [2024-01-30 14:18:15,107 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 215 selfloop transitions, 73 changer transitions 0/306 dead transitions. [2024-01-30 14:18:15,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 306 transitions, 4987 flow [2024-01-30 14:18:15,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-30 14:18:15,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-30 14:18:15,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 211 transitions. [2024-01-30 14:18:15,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38786764705882354 [2024-01-30 14:18:15,108 INFO L175 Difference]: Start difference. First operand has 237 places, 278 transitions, 4299 flow. Second operand 8 states and 211 transitions. [2024-01-30 14:18:15,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 306 transitions, 4987 flow [2024-01-30 14:18:15,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 306 transitions, 4792 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-01-30 14:18:15,289 INFO L231 Difference]: Finished difference. Result has 241 places, 283 transitions, 4307 flow [2024-01-30 14:18:15,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=4104, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4307, PETRI_PLACES=241, PETRI_TRANSITIONS=283} [2024-01-30 14:18:15,289 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 169 predicate places. [2024-01-30 14:18:15,290 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 283 transitions, 4307 flow [2024-01-30 14:18:15,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:15,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:15,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:18:15,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-01-30 14:18:15,290 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:15,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:15,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1554337578, now seen corresponding path program 3 times [2024-01-30 14:18:15,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:15,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500534584] [2024-01-30 14:18:15,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:15,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:15,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:15,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:15,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:15,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500534584] [2024-01-30 14:18:15,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500534584] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:15,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:15,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:18:15,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104148047] [2024-01-30 14:18:15,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:15,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-30 14:18:15,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:15,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-30 14:18:15,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-30 14:18:15,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:18:15,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 283 transitions, 4307 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:15,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:15,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:18:15,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:16,082 INFO L124 PetriNetUnfolderBase]: 1621/2949 cut-off events. [2024-01-30 14:18:16,082 INFO L125 PetriNetUnfolderBase]: For 34383/34550 co-relation queries the response was YES. [2024-01-30 14:18:16,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16922 conditions, 2949 events. 1621/2949 cut-off events. For 34383/34550 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 18927 event pairs, 307 based on Foata normal form. 66/2939 useless extension candidates. Maximal degree in co-relation 16824. Up to 2110 conditions per place. [2024-01-30 14:18:16,113 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 213 selfloop transitions, 79 changer transitions 0/310 dead transitions. [2024-01-30 14:18:16,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 310 transitions, 5022 flow [2024-01-30 14:18:16,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-30 14:18:16,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-30 14:18:16,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 211 transitions. [2024-01-30 14:18:16,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38786764705882354 [2024-01-30 14:18:16,115 INFO L175 Difference]: Start difference. First operand has 241 places, 283 transitions, 4307 flow. Second operand 8 states and 211 transitions. [2024-01-30 14:18:16,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 310 transitions, 5022 flow [2024-01-30 14:18:16,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 310 transitions, 4909 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-01-30 14:18:16,267 INFO L231 Difference]: Finished difference. Result has 244 places, 287 transitions, 4395 flow [2024-01-30 14:18:16,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=4200, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4395, PETRI_PLACES=244, PETRI_TRANSITIONS=287} [2024-01-30 14:18:16,268 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 172 predicate places. [2024-01-30 14:18:16,268 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 287 transitions, 4395 flow [2024-01-30 14:18:16,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:16,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:16,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:18:16,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-01-30 14:18:16,269 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:16,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:16,269 INFO L85 PathProgramCache]: Analyzing trace with hash -480697940, now seen corresponding path program 4 times [2024-01-30 14:18:16,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:16,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276912358] [2024-01-30 14:18:16,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:16,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:16,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:16,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:16,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:16,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276912358] [2024-01-30 14:18:16,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276912358] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:16,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:16,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:18:16,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874430016] [2024-01-30 14:18:16,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:16,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-30 14:18:16,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:16,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-30 14:18:16,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-30 14:18:16,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:18:16,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 287 transitions, 4395 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:16,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:16,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:18:16,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:17,030 INFO L124 PetriNetUnfolderBase]: 1621/2949 cut-off events. [2024-01-30 14:18:17,030 INFO L125 PetriNetUnfolderBase]: For 34859/35026 co-relation queries the response was YES. [2024-01-30 14:18:17,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16975 conditions, 2949 events. 1621/2949 cut-off events. For 34859/35026 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 18900 event pairs, 279 based on Foata normal form. 66/2939 useless extension candidates. Maximal degree in co-relation 16876. Up to 2114 conditions per place. [2024-01-30 14:18:17,062 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 209 selfloop transitions, 85 changer transitions 0/312 dead transitions. [2024-01-30 14:18:17,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 312 transitions, 5083 flow [2024-01-30 14:18:17,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-30 14:18:17,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-30 14:18:17,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-01-30 14:18:17,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3860294117647059 [2024-01-30 14:18:17,064 INFO L175 Difference]: Start difference. First operand has 244 places, 287 transitions, 4395 flow. Second operand 8 states and 210 transitions. [2024-01-30 14:18:17,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 312 transitions, 5083 flow [2024-01-30 14:18:17,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 312 transitions, 4959 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-01-30 14:18:17,246 INFO L231 Difference]: Finished difference. Result has 249 places, 290 transitions, 4501 flow [2024-01-30 14:18:17,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=4273, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4501, PETRI_PLACES=249, PETRI_TRANSITIONS=290} [2024-01-30 14:18:17,247 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 177 predicate places. [2024-01-30 14:18:17,247 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 290 transitions, 4501 flow [2024-01-30 14:18:17,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:17,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:17,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:18:17,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-01-30 14:18:17,248 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:17,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:17,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1696455036, now seen corresponding path program 1 times [2024-01-30 14:18:17,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:17,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637811153] [2024-01-30 14:18:17,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:17,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:17,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:17,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:17,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:17,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637811153] [2024-01-30 14:18:17,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637811153] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:17,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:17,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:18:17,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479622277] [2024-01-30 14:18:17,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:17,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-30 14:18:17,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:17,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-30 14:18:17,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-01-30 14:18:17,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:18:17,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 290 transitions, 4501 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:17,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:17,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:18:17,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:18,110 INFO L124 PetriNetUnfolderBase]: 1636/2946 cut-off events. [2024-01-30 14:18:18,111 INFO L125 PetriNetUnfolderBase]: For 36288/36575 co-relation queries the response was YES. [2024-01-30 14:18:18,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17009 conditions, 2946 events. 1636/2946 cut-off events. For 36288/36575 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 18779 event pairs, 344 based on Foata normal form. 67/2914 useless extension candidates. Maximal degree in co-relation 16908. Up to 2458 conditions per place. [2024-01-30 14:18:18,143 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 245 selfloop transitions, 55 changer transitions 0/321 dead transitions. [2024-01-30 14:18:18,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 321 transitions, 5219 flow [2024-01-30 14:18:18,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-30 14:18:18,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-30 14:18:18,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 251 transitions. [2024-01-30 14:18:18,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36911764705882355 [2024-01-30 14:18:18,145 INFO L175 Difference]: Start difference. First operand has 249 places, 290 transitions, 4501 flow. Second operand 10 states and 251 transitions. [2024-01-30 14:18:18,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 321 transitions, 5219 flow [2024-01-30 14:18:18,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 321 transitions, 5072 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-01-30 14:18:18,307 INFO L231 Difference]: Finished difference. Result has 253 places, 294 transitions, 4500 flow [2024-01-30 14:18:18,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=4356, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4500, PETRI_PLACES=253, PETRI_TRANSITIONS=294} [2024-01-30 14:18:18,308 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 181 predicate places. [2024-01-30 14:18:18,308 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 294 transitions, 4500 flow [2024-01-30 14:18:18,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:18,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:18,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:18:18,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-01-30 14:18:18,309 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:18,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:18,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1510933418, now seen corresponding path program 1 times [2024-01-30 14:18:18,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:18,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113032609] [2024-01-30 14:18:18,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:18,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:18,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:18,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:18,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:18,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113032609] [2024-01-30 14:18:18,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113032609] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:18,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:18,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:18:18,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260687606] [2024-01-30 14:18:18,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:18,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-30 14:18:18,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:18,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-30 14:18:18,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-30 14:18:18,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:18:18,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 294 transitions, 4500 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:18,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:18,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:18:18,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:19,162 INFO L124 PetriNetUnfolderBase]: 1626/2937 cut-off events. [2024-01-30 14:18:19,162 INFO L125 PetriNetUnfolderBase]: For 35111/35381 co-relation queries the response was YES. [2024-01-30 14:18:19,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16818 conditions, 2937 events. 1626/2937 cut-off events. For 35111/35381 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 18754 event pairs, 331 based on Foata normal form. 79/2915 useless extension candidates. Maximal degree in co-relation 16717. Up to 2465 conditions per place. [2024-01-30 14:18:19,194 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 250 selfloop transitions, 39 changer transitions 0/310 dead transitions. [2024-01-30 14:18:19,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 310 transitions, 5126 flow [2024-01-30 14:18:19,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:18:19,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:18:19,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-01-30 14:18:19,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37815126050420167 [2024-01-30 14:18:19,196 INFO L175 Difference]: Start difference. First operand has 253 places, 294 transitions, 4500 flow. Second operand 7 states and 180 transitions. [2024-01-30 14:18:19,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 310 transitions, 5126 flow [2024-01-30 14:18:19,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 310 transitions, 5028 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-01-30 14:18:19,365 INFO L231 Difference]: Finished difference. Result has 256 places, 295 transitions, 4495 flow [2024-01-30 14:18:19,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=4402, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4495, PETRI_PLACES=256, PETRI_TRANSITIONS=295} [2024-01-30 14:18:19,366 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 184 predicate places. [2024-01-30 14:18:19,366 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 295 transitions, 4495 flow [2024-01-30 14:18:19,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:19,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:19,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:18:19,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-01-30 14:18:19,367 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:19,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:19,367 INFO L85 PathProgramCache]: Analyzing trace with hash -291280200, now seen corresponding path program 2 times [2024-01-30 14:18:19,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:19,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237388561] [2024-01-30 14:18:19,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:19,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:19,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:19,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:19,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:19,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237388561] [2024-01-30 14:18:19,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237388561] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:19,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:19,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-30 14:18:19,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666442607] [2024-01-30 14:18:19,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:19,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-30 14:18:19,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:19,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-30 14:18:19,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-30 14:18:19,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-01-30 14:18:19,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 295 transitions, 4495 flow. Second operand has 8 states, 8 states have (on average 27.5) internal successors, (220), 8 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:19,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:19,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-01-30 14:18:19,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:20,053 INFO L124 PetriNetUnfolderBase]: 1221/2400 cut-off events. [2024-01-30 14:18:20,053 INFO L125 PetriNetUnfolderBase]: For 35888/36101 co-relation queries the response was YES. [2024-01-30 14:18:20,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14266 conditions, 2400 events. 1221/2400 cut-off events. For 35888/36101 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 16277 event pairs, 181 based on Foata normal form. 122/2452 useless extension candidates. Maximal degree in co-relation 14165. Up to 1527 conditions per place. [2024-01-30 14:18:20,074 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 210 selfloop transitions, 77 changer transitions 0/323 dead transitions. [2024-01-30 14:18:20,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 323 transitions, 5296 flow [2024-01-30 14:18:20,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:18:20,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:18:20,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 248 transitions. [2024-01-30 14:18:20,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5210084033613446 [2024-01-30 14:18:20,076 INFO L175 Difference]: Start difference. First operand has 256 places, 295 transitions, 4495 flow. Second operand 7 states and 248 transitions. [2024-01-30 14:18:20,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 323 transitions, 5296 flow [2024-01-30 14:18:20,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 323 transitions, 5247 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-01-30 14:18:20,195 INFO L231 Difference]: Finished difference. Result has 260 places, 306 transitions, 4764 flow [2024-01-30 14:18:20,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=4446, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4764, PETRI_PLACES=260, PETRI_TRANSITIONS=306} [2024-01-30 14:18:20,196 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 188 predicate places. [2024-01-30 14:18:20,196 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 306 transitions, 4764 flow [2024-01-30 14:18:20,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.5) internal successors, (220), 8 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:20,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:20,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:18:20,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-01-30 14:18:20,196 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:20,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:20,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1069904574, now seen corresponding path program 3 times [2024-01-30 14:18:20,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:20,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659638282] [2024-01-30 14:18:20,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:20,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:20,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:20,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:20,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:20,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659638282] [2024-01-30 14:18:20,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659638282] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:20,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:20,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-30 14:18:20,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956872671] [2024-01-30 14:18:20,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:20,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-30 14:18:20,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:20,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-30 14:18:20,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-30 14:18:20,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-01-30 14:18:20,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 306 transitions, 4764 flow. Second operand has 8 states, 8 states have (on average 27.5) internal successors, (220), 8 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:20,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:20,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-01-30 14:18:20,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:20,904 INFO L124 PetriNetUnfolderBase]: 1215/2390 cut-off events. [2024-01-30 14:18:20,904 INFO L125 PetriNetUnfolderBase]: For 38263/38484 co-relation queries the response was YES. [2024-01-30 14:18:20,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14527 conditions, 2390 events. 1215/2390 cut-off events. For 38263/38484 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 16213 event pairs, 185 based on Foata normal form. 106/2426 useless extension candidates. Maximal degree in co-relation 14424. Up to 1525 conditions per place. [2024-01-30 14:18:20,932 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 199 selfloop transitions, 84 changer transitions 0/319 dead transitions. [2024-01-30 14:18:20,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 319 transitions, 5378 flow [2024-01-30 14:18:20,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:18:20,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:18:20,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 244 transitions. [2024-01-30 14:18:20,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5126050420168067 [2024-01-30 14:18:20,934 INFO L175 Difference]: Start difference. First operand has 260 places, 306 transitions, 4764 flow. Second operand 7 states and 244 transitions. [2024-01-30 14:18:20,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 319 transitions, 5378 flow [2024-01-30 14:18:21,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 319 transitions, 5283 flow, removed 19 selfloop flow, removed 2 redundant places. [2024-01-30 14:18:21,084 INFO L231 Difference]: Finished difference. Result has 265 places, 306 transitions, 4845 flow [2024-01-30 14:18:21,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=4669, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4845, PETRI_PLACES=265, PETRI_TRANSITIONS=306} [2024-01-30 14:18:21,086 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 193 predicate places. [2024-01-30 14:18:21,086 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 306 transitions, 4845 flow [2024-01-30 14:18:21,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 27.5) internal successors, (220), 8 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:21,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:21,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:18:21,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-01-30 14:18:21,086 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:21,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:21,087 INFO L85 PathProgramCache]: Analyzing trace with hash 970208050, now seen corresponding path program 2 times [2024-01-30 14:18:21,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:21,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209900834] [2024-01-30 14:18:21,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:21,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:21,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:21,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:21,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:21,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209900834] [2024-01-30 14:18:21,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209900834] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:21,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:21,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:18:21,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926232110] [2024-01-30 14:18:21,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:21,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-30 14:18:21,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:21,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-30 14:18:21,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-01-30 14:18:21,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:18:21,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 306 transitions, 4845 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:21,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:21,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:18:21,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:22,029 INFO L124 PetriNetUnfolderBase]: 1675/3002 cut-off events. [2024-01-30 14:18:22,029 INFO L125 PetriNetUnfolderBase]: For 38952/39258 co-relation queries the response was YES. [2024-01-30 14:18:22,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17734 conditions, 3002 events. 1675/3002 cut-off events. For 38952/39258 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 19117 event pairs, 348 based on Foata normal form. 79/2977 useless extension candidates. Maximal degree in co-relation 17629. Up to 2587 conditions per place. [2024-01-30 14:18:22,061 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 262 selfloop transitions, 47 changer transitions 0/330 dead transitions. [2024-01-30 14:18:22,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 330 transitions, 5563 flow [2024-01-30 14:18:22,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-30 14:18:22,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-30 14:18:22,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 227 transitions. [2024-01-30 14:18:22,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709150326797386 [2024-01-30 14:18:22,063 INFO L175 Difference]: Start difference. First operand has 265 places, 306 transitions, 4845 flow. Second operand 9 states and 227 transitions. [2024-01-30 14:18:22,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 330 transitions, 5563 flow [2024-01-30 14:18:22,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 330 transitions, 5470 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-01-30 14:18:22,241 INFO L231 Difference]: Finished difference. Result has 272 places, 310 transitions, 4903 flow [2024-01-30 14:18:22,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=4756, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4903, PETRI_PLACES=272, PETRI_TRANSITIONS=310} [2024-01-30 14:18:22,243 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 200 predicate places. [2024-01-30 14:18:22,243 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 310 transitions, 4903 flow [2024-01-30 14:18:22,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:22,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:22,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:18:22,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-01-30 14:18:22,244 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:22,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:22,244 INFO L85 PathProgramCache]: Analyzing trace with hash 325706692, now seen corresponding path program 3 times [2024-01-30 14:18:22,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:22,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705138892] [2024-01-30 14:18:22,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:22,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:22,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:22,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:22,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:22,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705138892] [2024-01-30 14:18:22,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705138892] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:22,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:22,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:18:22,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071914152] [2024-01-30 14:18:22,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:22,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-30 14:18:22,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:22,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-30 14:18:22,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-30 14:18:22,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:18:22,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 310 transitions, 4903 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:22,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:22,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:18:22,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:23,203 INFO L124 PetriNetUnfolderBase]: 1697/3042 cut-off events. [2024-01-30 14:18:23,203 INFO L125 PetriNetUnfolderBase]: For 38922/39209 co-relation queries the response was YES. [2024-01-30 14:18:23,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17852 conditions, 3042 events. 1697/3042 cut-off events. For 38922/39209 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 19471 event pairs, 303 based on Foata normal form. 85/3022 useless extension candidates. Maximal degree in co-relation 17745. Up to 2095 conditions per place. [2024-01-30 14:18:23,235 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 243 selfloop transitions, 82 changer transitions 0/346 dead transitions. [2024-01-30 14:18:23,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 346 transitions, 5703 flow [2024-01-30 14:18:23,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-30 14:18:23,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-30 14:18:23,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 237 transitions. [2024-01-30 14:18:23,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3872549019607843 [2024-01-30 14:18:23,237 INFO L175 Difference]: Start difference. First operand has 272 places, 310 transitions, 4903 flow. Second operand 9 states and 237 transitions. [2024-01-30 14:18:23,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 346 transitions, 5703 flow [2024-01-30 14:18:23,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 346 transitions, 5638 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-30 14:18:23,424 INFO L231 Difference]: Finished difference. Result has 277 places, 315 transitions, 5044 flow [2024-01-30 14:18:23,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=4838, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5044, PETRI_PLACES=277, PETRI_TRANSITIONS=315} [2024-01-30 14:18:23,425 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 205 predicate places. [2024-01-30 14:18:23,425 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 315 transitions, 5044 flow [2024-01-30 14:18:23,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:23,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:23,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:18:23,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-01-30 14:18:23,426 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:23,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:23,426 INFO L85 PathProgramCache]: Analyzing trace with hash -79540160, now seen corresponding path program 4 times [2024-01-30 14:18:23,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:23,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882427135] [2024-01-30 14:18:23,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:23,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:23,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:23,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:23,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:23,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882427135] [2024-01-30 14:18:23,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882427135] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:23,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:23,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:18:23,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466155141] [2024-01-30 14:18:23,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:23,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-30 14:18:23,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:23,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-30 14:18:23,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-30 14:18:23,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:18:23,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 315 transitions, 5044 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:23,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:23,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:18:23,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:24,365 INFO L124 PetriNetUnfolderBase]: 1691/3033 cut-off events. [2024-01-30 14:18:24,366 INFO L125 PetriNetUnfolderBase]: For 40397/40687 co-relation queries the response was YES. [2024-01-30 14:18:24,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18019 conditions, 3033 events. 1691/3033 cut-off events. For 40397/40687 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 19330 event pairs, 308 based on Foata normal form. 73/3000 useless extension candidates. Maximal degree in co-relation 17911. Up to 2095 conditions per place. [2024-01-30 14:18:24,401 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 236 selfloop transitions, 86 changer transitions 0/343 dead transitions. [2024-01-30 14:18:24,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 343 transitions, 5785 flow [2024-01-30 14:18:24,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-30 14:18:24,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-30 14:18:24,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 234 transitions. [2024-01-30 14:18:24,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38235294117647056 [2024-01-30 14:18:24,402 INFO L175 Difference]: Start difference. First operand has 277 places, 315 transitions, 5044 flow. Second operand 9 states and 234 transitions. [2024-01-30 14:18:24,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 343 transitions, 5785 flow [2024-01-30 14:18:24,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 343 transitions, 5655 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-01-30 14:18:24,602 INFO L231 Difference]: Finished difference. Result has 280 places, 315 transitions, 5091 flow [2024-01-30 14:18:24,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=4914, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5091, PETRI_PLACES=280, PETRI_TRANSITIONS=315} [2024-01-30 14:18:24,602 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 208 predicate places. [2024-01-30 14:18:24,602 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 315 transitions, 5091 flow [2024-01-30 14:18:24,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:24,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:24,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:18:24,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-01-30 14:18:24,603 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:24,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:24,604 INFO L85 PathProgramCache]: Analyzing trace with hash 51845546, now seen corresponding path program 2 times [2024-01-30 14:18:24,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:24,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11717781] [2024-01-30 14:18:24,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:24,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:24,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:24,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:24,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:24,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11717781] [2024-01-30 14:18:24,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11717781] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:24,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:24,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:18:24,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930749556] [2024-01-30 14:18:24,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:24,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-30 14:18:24,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:24,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-30 14:18:24,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-30 14:18:24,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:18:24,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 315 transitions, 5091 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:24,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:24,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:18:24,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:25,487 INFO L124 PetriNetUnfolderBase]: 1673/3013 cut-off events. [2024-01-30 14:18:25,487 INFO L125 PetriNetUnfolderBase]: For 41062/41352 co-relation queries the response was YES. [2024-01-30 14:18:25,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17859 conditions, 3013 events. 1673/3013 cut-off events. For 41062/41352 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 19404 event pairs, 338 based on Foata normal form. 87/2997 useless extension candidates. Maximal degree in co-relation 17751. Up to 2544 conditions per place. [2024-01-30 14:18:25,513 INFO L140 encePairwiseOnDemand]: 62/68 looper letters, 266 selfloop transitions, 43 changer transitions 0/330 dead transitions. [2024-01-30 14:18:25,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 330 transitions, 5756 flow [2024-01-30 14:18:25,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-30 14:18:25,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-30 14:18:25,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 160 transitions. [2024-01-30 14:18:25,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39215686274509803 [2024-01-30 14:18:25,515 INFO L175 Difference]: Start difference. First operand has 280 places, 315 transitions, 5091 flow. Second operand 6 states and 160 transitions. [2024-01-30 14:18:25,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 330 transitions, 5756 flow [2024-01-30 14:18:25,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 330 transitions, 5605 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-30 14:18:25,700 INFO L231 Difference]: Finished difference. Result has 280 places, 316 transitions, 5047 flow [2024-01-30 14:18:25,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=4940, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5047, PETRI_PLACES=280, PETRI_TRANSITIONS=316} [2024-01-30 14:18:25,701 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 208 predicate places. [2024-01-30 14:18:25,701 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 316 transitions, 5047 flow [2024-01-30 14:18:25,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:25,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:25,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:18:25,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-01-30 14:18:25,702 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:25,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:25,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1711279468, now seen corresponding path program 3 times [2024-01-30 14:18:25,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:25,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142868070] [2024-01-30 14:18:25,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:25,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:25,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:25,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:25,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:25,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142868070] [2024-01-30 14:18:25,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142868070] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:25,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:25,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:18:25,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105799268] [2024-01-30 14:18:25,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:25,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-30 14:18:25,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:25,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-30 14:18:25,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-30 14:18:25,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:18:25,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 316 transitions, 5047 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:25,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:25,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:18:25,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:26,553 INFO L124 PetriNetUnfolderBase]: 1675/3029 cut-off events. [2024-01-30 14:18:26,553 INFO L125 PetriNetUnfolderBase]: For 40917/41167 co-relation queries the response was YES. [2024-01-30 14:18:26,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17743 conditions, 3029 events. 1675/3029 cut-off events. For 40917/41167 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 19513 event pairs, 312 based on Foata normal form. 92/3023 useless extension candidates. Maximal degree in co-relation 17634. Up to 2548 conditions per place. [2024-01-30 14:18:26,586 INFO L140 encePairwiseOnDemand]: 62/68 looper letters, 269 selfloop transitions, 39 changer transitions 0/329 dead transitions. [2024-01-30 14:18:26,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 329 transitions, 5705 flow [2024-01-30 14:18:26,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-30 14:18:26,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-30 14:18:26,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 157 transitions. [2024-01-30 14:18:26,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38480392156862747 [2024-01-30 14:18:26,587 INFO L175 Difference]: Start difference. First operand has 280 places, 316 transitions, 5047 flow. Second operand 6 states and 157 transitions. [2024-01-30 14:18:26,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 329 transitions, 5705 flow [2024-01-30 14:18:26,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 329 transitions, 5637 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-01-30 14:18:26,777 INFO L231 Difference]: Finished difference. Result has 281 places, 317 transitions, 5075 flow [2024-01-30 14:18:26,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=4980, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5075, PETRI_PLACES=281, PETRI_TRANSITIONS=317} [2024-01-30 14:18:26,778 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 209 predicate places. [2024-01-30 14:18:26,778 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 317 transitions, 5075 flow [2024-01-30 14:18:26,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:26,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:26,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:18:26,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-01-30 14:18:26,778 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:26,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:26,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1710205318, now seen corresponding path program 4 times [2024-01-30 14:18:26,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:26,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730778435] [2024-01-30 14:18:26,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:26,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:26,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:27,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:27,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:27,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730778435] [2024-01-30 14:18:27,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730778435] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:27,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:27,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:18:27,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380876285] [2024-01-30 14:18:27,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:27,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-30 14:18:27,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:27,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-30 14:18:27,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-30 14:18:27,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:18:27,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 317 transitions, 5075 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:27,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:27,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:18:27,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:27,580 INFO L124 PetriNetUnfolderBase]: 1673/3023 cut-off events. [2024-01-30 14:18:27,580 INFO L125 PetriNetUnfolderBase]: For 40926/41176 co-relation queries the response was YES. [2024-01-30 14:18:27,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17708 conditions, 3023 events. 1673/3023 cut-off events. For 40926/41176 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 19438 event pairs, 316 based on Foata normal form. 84/3009 useless extension candidates. Maximal degree in co-relation 17600. Up to 2548 conditions per place. [2024-01-30 14:18:27,612 INFO L140 encePairwiseOnDemand]: 62/68 looper letters, 260 selfloop transitions, 46 changer transitions 0/327 dead transitions. [2024-01-30 14:18:27,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 327 transitions, 5699 flow [2024-01-30 14:18:27,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-30 14:18:27,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-30 14:18:27,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 155 transitions. [2024-01-30 14:18:27,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3799019607843137 [2024-01-30 14:18:27,613 INFO L175 Difference]: Start difference. First operand has 281 places, 317 transitions, 5075 flow. Second operand 6 states and 155 transitions. [2024-01-30 14:18:27,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 327 transitions, 5699 flow [2024-01-30 14:18:27,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 327 transitions, 5551 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-01-30 14:18:27,796 INFO L231 Difference]: Finished difference. Result has 275 places, 316 transitions, 5003 flow [2024-01-30 14:18:27,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=4911, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5003, PETRI_PLACES=275, PETRI_TRANSITIONS=316} [2024-01-30 14:18:27,796 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 203 predicate places. [2024-01-30 14:18:27,796 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 316 transitions, 5003 flow [2024-01-30 14:18:27,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:27,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:27,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:18:27,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-01-30 14:18:27,797 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:27,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:27,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1888010094, now seen corresponding path program 5 times [2024-01-30 14:18:27,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:27,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106435838] [2024-01-30 14:18:27,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:27,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:27,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:28,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:28,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:28,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106435838] [2024-01-30 14:18:28,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106435838] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:28,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:28,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:18:28,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460239556] [2024-01-30 14:18:28,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:28,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-30 14:18:28,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:28,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-30 14:18:28,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-01-30 14:18:28,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:18:28,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 316 transitions, 5003 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:28,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:28,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:18:28,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:28,651 INFO L124 PetriNetUnfolderBase]: 1679/3022 cut-off events. [2024-01-30 14:18:28,651 INFO L125 PetriNetUnfolderBase]: For 40442/40751 co-relation queries the response was YES. [2024-01-30 14:18:28,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17663 conditions, 3022 events. 1679/3022 cut-off events. For 40442/40751 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 19398 event pairs, 354 based on Foata normal form. 71/2991 useless extension candidates. Maximal degree in co-relation 17561. Up to 2531 conditions per place. [2024-01-30 14:18:28,683 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 252 selfloop transitions, 62 changer transitions 0/335 dead transitions. [2024-01-30 14:18:28,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 335 transitions, 5688 flow [2024-01-30 14:18:28,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-30 14:18:28,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-30 14:18:28,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-01-30 14:18:28,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37683823529411764 [2024-01-30 14:18:28,684 INFO L175 Difference]: Start difference. First operand has 275 places, 316 transitions, 5003 flow. Second operand 8 states and 205 transitions. [2024-01-30 14:18:28,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 335 transitions, 5688 flow [2024-01-30 14:18:28,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 335 transitions, 5564 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-01-30 14:18:28,885 INFO L231 Difference]: Finished difference. Result has 277 places, 316 transitions, 5017 flow [2024-01-30 14:18:28,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=4879, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5017, PETRI_PLACES=277, PETRI_TRANSITIONS=316} [2024-01-30 14:18:28,886 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 205 predicate places. [2024-01-30 14:18:28,886 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 316 transitions, 5017 flow [2024-01-30 14:18:28,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:28,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:28,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:18:28,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-01-30 14:18:28,887 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:28,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:28,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1467237166, now seen corresponding path program 6 times [2024-01-30 14:18:28,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:28,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451298518] [2024-01-30 14:18:28,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:28,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:28,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:29,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:29,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:29,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451298518] [2024-01-30 14:18:29,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451298518] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:29,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:29,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:18:29,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661899041] [2024-01-30 14:18:29,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:29,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-30 14:18:29,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:29,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-30 14:18:29,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-30 14:18:29,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:18:29,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 316 transitions, 5017 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:29,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:29,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:18:29,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:29,732 INFO L124 PetriNetUnfolderBase]: 1709/3070 cut-off events. [2024-01-30 14:18:29,732 INFO L125 PetriNetUnfolderBase]: For 41482/41776 co-relation queries the response was YES. [2024-01-30 14:18:29,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17912 conditions, 3070 events. 1709/3070 cut-off events. For 41482/41776 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 19745 event pairs, 297 based on Foata normal form. 93/3057 useless extension candidates. Maximal degree in co-relation 17811. Up to 2095 conditions per place. [2024-01-30 14:18:29,763 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 238 selfloop transitions, 90 changer transitions 0/349 dead transitions. [2024-01-30 14:18:29,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 349 transitions, 5829 flow [2024-01-30 14:18:29,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-30 14:18:29,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-30 14:18:29,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 214 transitions. [2024-01-30 14:18:29,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39338235294117646 [2024-01-30 14:18:29,765 INFO L175 Difference]: Start difference. First operand has 277 places, 316 transitions, 5017 flow. Second operand 8 states and 214 transitions. [2024-01-30 14:18:29,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 349 transitions, 5829 flow [2024-01-30 14:18:29,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 349 transitions, 5662 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-01-30 14:18:29,951 INFO L231 Difference]: Finished difference. Result has 277 places, 321 transitions, 5088 flow [2024-01-30 14:18:29,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=4858, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5088, PETRI_PLACES=277, PETRI_TRANSITIONS=321} [2024-01-30 14:18:29,952 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 205 predicate places. [2024-01-30 14:18:29,952 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 321 transitions, 5088 flow [2024-01-30 14:18:29,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:29,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:29,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:18:29,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-01-30 14:18:29,953 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:29,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:29,954 INFO L85 PathProgramCache]: Analyzing trace with hash 681706300, now seen corresponding path program 7 times [2024-01-30 14:18:29,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:29,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622827856] [2024-01-30 14:18:29,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:29,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:29,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:30,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:30,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:30,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622827856] [2024-01-30 14:18:30,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622827856] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:30,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:30,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:18:30,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086021286] [2024-01-30 14:18:30,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:30,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-30 14:18:30,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:30,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-30 14:18:30,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-30 14:18:30,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:18:30,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 321 transitions, 5088 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:30,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:30,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:18:30,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:30,882 INFO L124 PetriNetUnfolderBase]: 1749/3117 cut-off events. [2024-01-30 14:18:30,882 INFO L125 PetriNetUnfolderBase]: For 42359/42636 co-relation queries the response was YES. [2024-01-30 14:18:30,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18392 conditions, 3117 events. 1749/3117 cut-off events. For 42359/42636 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 19828 event pairs, 277 based on Foata normal form. 119/3121 useless extension candidates. Maximal degree in co-relation 18291. Up to 2132 conditions per place. [2024-01-30 14:18:30,915 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 229 selfloop transitions, 104 changer transitions 0/354 dead transitions. [2024-01-30 14:18:30,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 354 transitions, 5955 flow [2024-01-30 14:18:30,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-30 14:18:30,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-30 14:18:30,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-01-30 14:18:30,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3860294117647059 [2024-01-30 14:18:30,917 INFO L175 Difference]: Start difference. First operand has 277 places, 321 transitions, 5088 flow. Second operand 8 states and 210 transitions. [2024-01-30 14:18:30,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 354 transitions, 5955 flow [2024-01-30 14:18:31,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 354 transitions, 5788 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-01-30 14:18:31,118 INFO L231 Difference]: Finished difference. Result has 280 places, 332 transitions, 5303 flow [2024-01-30 14:18:31,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=4947, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5303, PETRI_PLACES=280, PETRI_TRANSITIONS=332} [2024-01-30 14:18:31,119 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 208 predicate places. [2024-01-30 14:18:31,119 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 332 transitions, 5303 flow [2024-01-30 14:18:31,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:31,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:31,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:18:31,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-01-30 14:18:31,120 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:31,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:31,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1435780846, now seen corresponding path program 8 times [2024-01-30 14:18:31,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:31,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092601323] [2024-01-30 14:18:31,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:31,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:31,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:31,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:31,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:31,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092601323] [2024-01-30 14:18:31,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092601323] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:31,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:31,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:18:31,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577906923] [2024-01-30 14:18:31,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:31,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-30 14:18:31,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:31,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-30 14:18:31,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-30 14:18:31,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:18:31,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 332 transitions, 5303 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:31,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:31,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:18:31,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:31,929 INFO L124 PetriNetUnfolderBase]: 1715/3080 cut-off events. [2024-01-30 14:18:31,930 INFO L125 PetriNetUnfolderBase]: For 42623/42920 co-relation queries the response was YES. [2024-01-30 14:18:31,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18321 conditions, 3080 events. 1715/3080 cut-off events. For 42623/42920 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 19807 event pairs, 303 based on Foata normal form. 69/3043 useless extension candidates. Maximal degree in co-relation 18220. Up to 2107 conditions per place. [2024-01-30 14:18:31,959 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 230 selfloop transitions, 105 changer transitions 0/356 dead transitions. [2024-01-30 14:18:31,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 356 transitions, 6064 flow [2024-01-30 14:18:31,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-30 14:18:31,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-30 14:18:31,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 211 transitions. [2024-01-30 14:18:31,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38786764705882354 [2024-01-30 14:18:31,960 INFO L175 Difference]: Start difference. First operand has 280 places, 332 transitions, 5303 flow. Second operand 8 states and 211 transitions. [2024-01-30 14:18:31,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 356 transitions, 6064 flow [2024-01-30 14:18:32,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 356 transitions, 5900 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-01-30 14:18:32,157 INFO L231 Difference]: Finished difference. Result has 282 places, 332 transitions, 5359 flow [2024-01-30 14:18:32,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=5141, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5359, PETRI_PLACES=282, PETRI_TRANSITIONS=332} [2024-01-30 14:18:32,158 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 210 predicate places. [2024-01-30 14:18:32,159 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 332 transitions, 5359 flow [2024-01-30 14:18:32,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:32,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:32,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:18:32,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-01-30 14:18:32,159 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:32,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:32,160 INFO L85 PathProgramCache]: Analyzing trace with hash 713162620, now seen corresponding path program 9 times [2024-01-30 14:18:32,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:32,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519003763] [2024-01-30 14:18:32,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:32,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:32,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:32,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:32,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:32,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519003763] [2024-01-30 14:18:32,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519003763] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:32,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:32,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:18:32,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687033632] [2024-01-30 14:18:32,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:32,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-30 14:18:32,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:32,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-30 14:18:32,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-30 14:18:32,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:18:32,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 332 transitions, 5359 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:32,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:32,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:18:32,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:32,964 INFO L124 PetriNetUnfolderBase]: 1773/3157 cut-off events. [2024-01-30 14:18:32,964 INFO L125 PetriNetUnfolderBase]: For 44587/44867 co-relation queries the response was YES. [2024-01-30 14:18:32,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18866 conditions, 3157 events. 1773/3157 cut-off events. For 44587/44867 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 20117 event pairs, 280 based on Foata normal form. 119/3161 useless extension candidates. Maximal degree in co-relation 18765. Up to 2148 conditions per place. [2024-01-30 14:18:32,998 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 227 selfloop transitions, 114 changer transitions 0/362 dead transitions. [2024-01-30 14:18:32,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 362 transitions, 6229 flow [2024-01-30 14:18:32,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-30 14:18:32,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-30 14:18:32,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 210 transitions. [2024-01-30 14:18:32,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3860294117647059 [2024-01-30 14:18:32,999 INFO L175 Difference]: Start difference. First operand has 282 places, 332 transitions, 5359 flow. Second operand 8 states and 210 transitions. [2024-01-30 14:18:32,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 362 transitions, 6229 flow [2024-01-30 14:18:33,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 362 transitions, 6035 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-01-30 14:18:33,204 INFO L231 Difference]: Finished difference. Result has 284 places, 340 transitions, 5504 flow [2024-01-30 14:18:33,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=5183, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5504, PETRI_PLACES=284, PETRI_TRANSITIONS=340} [2024-01-30 14:18:33,205 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 212 predicate places. [2024-01-30 14:18:33,205 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 340 transitions, 5504 flow [2024-01-30 14:18:33,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:33,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:33,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-30 14:18:33,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-01-30 14:18:33,205 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:33,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:33,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1745420770, now seen corresponding path program 10 times [2024-01-30 14:18:33,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:33,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253532737] [2024-01-30 14:18:33,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:33,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:33,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:33,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:33,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:33,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253532737] [2024-01-30 14:18:33,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253532737] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:33,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:33,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:18:33,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068268996] [2024-01-30 14:18:33,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:33,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-30 14:18:33,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:33,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-30 14:18:33,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-01-30 14:18:33,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:18:33,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 340 transitions, 5504 flow. Second operand has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:33,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:33,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:18:33,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:34,030 INFO L124 PetriNetUnfolderBase]: 1785/3177 cut-off events. [2024-01-30 14:18:34,031 INFO L125 PetriNetUnfolderBase]: For 45443/45723 co-relation queries the response was YES. [2024-01-30 14:18:34,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18998 conditions, 3177 events. 1785/3177 cut-off events. For 45443/45723 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 20230 event pairs, 300 based on Foata normal form. 87/3149 useless extension candidates. Maximal degree in co-relation 18897. Up to 2160 conditions per place. [2024-01-30 14:18:34,071 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 221 selfloop transitions, 124 changer transitions 0/366 dead transitions. [2024-01-30 14:18:34,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 366 transitions, 6328 flow [2024-01-30 14:18:34,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-30 14:18:34,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-30 14:18:34,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 207 transitions. [2024-01-30 14:18:34,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3805147058823529 [2024-01-30 14:18:34,072 INFO L175 Difference]: Start difference. First operand has 284 places, 340 transitions, 5504 flow. Second operand 8 states and 207 transitions. [2024-01-30 14:18:34,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 366 transitions, 6328 flow [2024-01-30 14:18:34,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 366 transitions, 6095 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-01-30 14:18:34,284 INFO L231 Difference]: Finished difference. Result has 288 places, 347 transitions, 5651 flow [2024-01-30 14:18:34,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=5280, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5651, PETRI_PLACES=288, PETRI_TRANSITIONS=347} [2024-01-30 14:18:34,285 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 216 predicate places. [2024-01-30 14:18:34,285 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 347 transitions, 5651 flow [2024-01-30 14:18:34,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.555555555555557) internal successors, (158), 9 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:34,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:34,285 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] [2024-01-30 14:18:34,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-01-30 14:18:34,285 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:34,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:34,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1672972301, now seen corresponding path program 1 times [2024-01-30 14:18:34,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:34,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448626896] [2024-01-30 14:18:34,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:34,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:34,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:34,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:34,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:34,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448626896] [2024-01-30 14:18:34,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448626896] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:34,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:34,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-30 14:18:34,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815892110] [2024-01-30 14:18:34,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:34,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-30 14:18:34,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:34,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-30 14:18:34,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-01-30 14:18:34,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:18:34,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 347 transitions, 5651 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:34,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:34,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:18:34,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:35,170 INFO L124 PetriNetUnfolderBase]: 1724/3160 cut-off events. [2024-01-30 14:18:35,170 INFO L125 PetriNetUnfolderBase]: For 50386/50534 co-relation queries the response was YES. [2024-01-30 14:18:35,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19027 conditions, 3160 events. 1724/3160 cut-off events. For 50386/50534 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 20801 event pairs, 383 based on Foata normal form. 40/3105 useless extension candidates. Maximal degree in co-relation 18924. Up to 2565 conditions per place. [2024-01-30 14:18:35,204 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 278 selfloop transitions, 61 changer transitions 0/360 dead transitions. [2024-01-30 14:18:35,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 360 transitions, 6382 flow [2024-01-30 14:18:35,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:18:35,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:18:35,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-01-30 14:18:35,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3739495798319328 [2024-01-30 14:18:35,206 INFO L175 Difference]: Start difference. First operand has 288 places, 347 transitions, 5651 flow. Second operand 7 states and 178 transitions. [2024-01-30 14:18:35,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 360 transitions, 6382 flow [2024-01-30 14:18:35,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 360 transitions, 6175 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-01-30 14:18:35,406 INFO L231 Difference]: Finished difference. Result has 288 places, 348 transitions, 5596 flow [2024-01-30 14:18:35,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=5444, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5596, PETRI_PLACES=288, PETRI_TRANSITIONS=348} [2024-01-30 14:18:35,414 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 216 predicate places. [2024-01-30 14:18:35,414 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 348 transitions, 5596 flow [2024-01-30 14:18:35,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:35,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:35,414 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] [2024-01-30 14:18:35,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-01-30 14:18:35,415 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:35,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:35,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1562043367, now seen corresponding path program 1 times [2024-01-30 14:18:35,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:35,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179932589] [2024-01-30 14:18:35,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:35,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:35,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:35,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:35,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:35,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179932589] [2024-01-30 14:18:35,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179932589] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:35,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:35,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-30 14:18:35,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95928311] [2024-01-30 14:18:35,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:35,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-30 14:18:35,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:35,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-30 14:18:35,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-01-30 14:18:35,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:18:35,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 348 transitions, 5596 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:35,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:35,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:18:35,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:36,637 INFO L124 PetriNetUnfolderBase]: 1980/3556 cut-off events. [2024-01-30 14:18:36,638 INFO L125 PetriNetUnfolderBase]: For 56782/57093 co-relation queries the response was YES. [2024-01-30 14:18:36,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21000 conditions, 3556 events. 1980/3556 cut-off events. For 56782/57093 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 23275 event pairs, 432 based on Foata normal form. 95/3548 useless extension candidates. Maximal degree in co-relation 20898. Up to 2465 conditions per place. [2024-01-30 14:18:36,684 INFO L140 encePairwiseOnDemand]: 56/68 looper letters, 317 selfloop transitions, 94 changer transitions 0/432 dead transitions. [2024-01-30 14:18:36,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 432 transitions, 7127 flow [2024-01-30 14:18:36,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-30 14:18:36,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-30 14:18:36,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 319 transitions. [2024-01-30 14:18:36,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3909313725490196 [2024-01-30 14:18:36,686 INFO L175 Difference]: Start difference. First operand has 288 places, 348 transitions, 5596 flow. Second operand 12 states and 319 transitions. [2024-01-30 14:18:36,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 432 transitions, 7127 flow [2024-01-30 14:18:36,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 432 transitions, 7044 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-01-30 14:18:36,951 INFO L231 Difference]: Finished difference. Result has 298 places, 368 transitions, 6012 flow [2024-01-30 14:18:36,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=5516, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6012, PETRI_PLACES=298, PETRI_TRANSITIONS=368} [2024-01-30 14:18:36,952 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 226 predicate places. [2024-01-30 14:18:36,952 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 368 transitions, 6012 flow [2024-01-30 14:18:36,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:36,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:36,953 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] [2024-01-30 14:18:36,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-01-30 14:18:36,953 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:36,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:36,953 INFO L85 PathProgramCache]: Analyzing trace with hash -698448301, now seen corresponding path program 1 times [2024-01-30 14:18:36,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:36,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130117439] [2024-01-30 14:18:36,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:36,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:36,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:37,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:37,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:37,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130117439] [2024-01-30 14:18:37,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130117439] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:37,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:37,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-30 14:18:37,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962314260] [2024-01-30 14:18:37,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:37,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-30 14:18:37,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:37,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-30 14:18:37,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-01-30 14:18:37,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:18:37,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 368 transitions, 6012 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:37,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:37,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:18:37,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:38,206 INFO L124 PetriNetUnfolderBase]: 2150/3909 cut-off events. [2024-01-30 14:18:38,206 INFO L125 PetriNetUnfolderBase]: For 72922/73085 co-relation queries the response was YES. [2024-01-30 14:18:38,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23934 conditions, 3909 events. 2150/3909 cut-off events. For 72922/73085 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 26259 event pairs, 555 based on Foata normal form. 78/3902 useless extension candidates. Maximal degree in co-relation 23829. Up to 2533 conditions per place. [2024-01-30 14:18:38,255 INFO L140 encePairwiseOnDemand]: 56/68 looper letters, 327 selfloop transitions, 100 changer transitions 0/448 dead transitions. [2024-01-30 14:18:38,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 448 transitions, 7666 flow [2024-01-30 14:18:38,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-30 14:18:38,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-30 14:18:38,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 315 transitions. [2024-01-30 14:18:38,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3860294117647059 [2024-01-30 14:18:38,257 INFO L175 Difference]: Start difference. First operand has 298 places, 368 transitions, 6012 flow. Second operand 12 states and 315 transitions. [2024-01-30 14:18:38,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 448 transitions, 7666 flow [2024-01-30 14:18:38,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 448 transitions, 7561 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-01-30 14:18:38,549 INFO L231 Difference]: Finished difference. Result has 306 places, 384 transitions, 6405 flow [2024-01-30 14:18:38,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=5907, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6405, PETRI_PLACES=306, PETRI_TRANSITIONS=384} [2024-01-30 14:18:38,550 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 234 predicate places. [2024-01-30 14:18:38,550 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 384 transitions, 6405 flow [2024-01-30 14:18:38,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:38,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:38,551 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] [2024-01-30 14:18:38,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-01-30 14:18:38,551 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:38,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:38,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1334024041, now seen corresponding path program 2 times [2024-01-30 14:18:38,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:38,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001411382] [2024-01-30 14:18:38,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:38,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:38,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:38,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:38,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:38,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001411382] [2024-01-30 14:18:38,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001411382] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:38,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:38,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-30 14:18:38,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746569692] [2024-01-30 14:18:38,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:38,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-30 14:18:38,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:38,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-30 14:18:38,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-01-30 14:18:38,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:18:38,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 384 transitions, 6405 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:38,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:38,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:18:38,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:39,662 INFO L124 PetriNetUnfolderBase]: 2184/3956 cut-off events. [2024-01-30 14:18:39,662 INFO L125 PetriNetUnfolderBase]: For 73434/73612 co-relation queries the response was YES. [2024-01-30 14:18:39,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24772 conditions, 3956 events. 2184/3956 cut-off events. For 73434/73612 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 26523 event pairs, 501 based on Foata normal form. 58/3910 useless extension candidates. Maximal degree in co-relation 24664. Up to 3031 conditions per place. [2024-01-30 14:18:39,705 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 309 selfloop transitions, 74 changer transitions 0/404 dead transitions. [2024-01-30 14:18:39,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 404 transitions, 7260 flow [2024-01-30 14:18:39,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:18:39,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:18:39,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-01-30 14:18:39,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38445378151260506 [2024-01-30 14:18:39,706 INFO L175 Difference]: Start difference. First operand has 306 places, 384 transitions, 6405 flow. Second operand 7 states and 183 transitions. [2024-01-30 14:18:39,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 404 transitions, 7260 flow [2024-01-30 14:18:39,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 404 transitions, 7114 flow, removed 35 selfloop flow, removed 5 redundant places. [2024-01-30 14:18:39,994 INFO L231 Difference]: Finished difference. Result has 309 places, 387 transitions, 6475 flow [2024-01-30 14:18:39,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=6259, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6475, PETRI_PLACES=309, PETRI_TRANSITIONS=387} [2024-01-30 14:18:39,995 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 237 predicate places. [2024-01-30 14:18:39,995 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 387 transitions, 6475 flow [2024-01-30 14:18:39,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:39,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:39,995 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] [2024-01-30 14:18:39,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-01-30 14:18:39,995 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:39,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:39,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1233922337, now seen corresponding path program 3 times [2024-01-30 14:18:39,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:39,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065003793] [2024-01-30 14:18:39,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:39,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:40,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:40,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:40,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:40,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065003793] [2024-01-30 14:18:40,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065003793] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:40,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:40,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-30 14:18:40,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456330619] [2024-01-30 14:18:40,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:40,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-30 14:18:40,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:40,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-30 14:18:40,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-01-30 14:18:40,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:18:40,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 387 transitions, 6475 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:40,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:40,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:18:40,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:41,053 INFO L124 PetriNetUnfolderBase]: 2190/3974 cut-off events. [2024-01-30 14:18:41,054 INFO L125 PetriNetUnfolderBase]: For 72238/72416 co-relation queries the response was YES. [2024-01-30 14:18:41,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24697 conditions, 3974 events. 2190/3974 cut-off events. For 72238/72416 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 26753 event pairs, 502 based on Foata normal form. 58/3928 useless extension candidates. Maximal degree in co-relation 24587. Up to 3039 conditions per place. [2024-01-30 14:18:41,109 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 306 selfloop transitions, 79 changer transitions 0/406 dead transitions. [2024-01-30 14:18:41,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 406 transitions, 7338 flow [2024-01-30 14:18:41,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:18:41,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:18:41,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 183 transitions. [2024-01-30 14:18:41,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38445378151260506 [2024-01-30 14:18:41,111 INFO L175 Difference]: Start difference. First operand has 309 places, 387 transitions, 6475 flow. Second operand 7 states and 183 transitions. [2024-01-30 14:18:41,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 406 transitions, 7338 flow [2024-01-30 14:18:41,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 406 transitions, 7245 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-01-30 14:18:41,423 INFO L231 Difference]: Finished difference. Result has 313 places, 389 transitions, 6576 flow [2024-01-30 14:18:41,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=6392, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6576, PETRI_PLACES=313, PETRI_TRANSITIONS=389} [2024-01-30 14:18:41,425 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 241 predicate places. [2024-01-30 14:18:41,425 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 389 transitions, 6576 flow [2024-01-30 14:18:41,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:41,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:41,433 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] [2024-01-30 14:18:41,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-01-30 14:18:41,433 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:41,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:41,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1460036027, now seen corresponding path program 4 times [2024-01-30 14:18:41,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:41,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28083472] [2024-01-30 14:18:41,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:41,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:41,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:41,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:41,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:41,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28083472] [2024-01-30 14:18:41,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28083472] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:41,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:41,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-30 14:18:41,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534276288] [2024-01-30 14:18:41,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:41,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-30 14:18:41,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:41,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-30 14:18:41,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-01-30 14:18:41,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:18:41,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 389 transitions, 6576 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:41,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:41,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:18:41,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:42,427 INFO L124 PetriNetUnfolderBase]: 2190/3974 cut-off events. [2024-01-30 14:18:42,428 INFO L125 PetriNetUnfolderBase]: For 73010/73188 co-relation queries the response was YES. [2024-01-30 14:18:42,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24722 conditions, 3974 events. 2190/3974 cut-off events. For 73010/73188 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 26746 event pairs, 467 based on Foata normal form. 58/3928 useless extension candidates. Maximal degree in co-relation 24612. Up to 3043 conditions per place. [2024-01-30 14:18:42,480 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 297 selfloop transitions, 89 changer transitions 0/407 dead transitions. [2024-01-30 14:18:42,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 407 transitions, 7402 flow [2024-01-30 14:18:42,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:18:42,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:18:42,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-01-30 14:18:42,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38235294117647056 [2024-01-30 14:18:42,481 INFO L175 Difference]: Start difference. First operand has 313 places, 389 transitions, 6576 flow. Second operand 7 states and 182 transitions. [2024-01-30 14:18:42,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 407 transitions, 7402 flow [2024-01-30 14:18:42,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 407 transitions, 7186 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-01-30 14:18:42,784 INFO L231 Difference]: Finished difference. Result has 309 places, 390 transitions, 6578 flow [2024-01-30 14:18:42,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=6344, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6578, PETRI_PLACES=309, PETRI_TRANSITIONS=390} [2024-01-30 14:18:42,785 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 237 predicate places. [2024-01-30 14:18:42,785 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 390 transitions, 6578 flow [2024-01-30 14:18:42,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:42,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:42,786 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] [2024-01-30 14:18:42,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-01-30 14:18:42,786 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:42,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:42,786 INFO L85 PathProgramCache]: Analyzing trace with hash 644698269, now seen corresponding path program 1 times [2024-01-30 14:18:42,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:42,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224226008] [2024-01-30 14:18:42,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:42,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:42,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:42,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:42,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:42,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224226008] [2024-01-30 14:18:42,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224226008] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:42,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:42,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:18:42,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063803121] [2024-01-30 14:18:42,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:42,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-30 14:18:42,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:42,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-30 14:18:42,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-01-30 14:18:42,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-01-30 14:18:42,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 390 transitions, 6578 flow. Second operand has 9 states, 9 states have (on average 27.444444444444443) internal successors, (247), 9 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) [2024-01-30 14:18:42,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:42,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-01-30 14:18:42,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:43,707 INFO L124 PetriNetUnfolderBase]: 1727/3367 cut-off events. [2024-01-30 14:18:43,707 INFO L125 PetriNetUnfolderBase]: For 76683/76934 co-relation queries the response was YES. [2024-01-30 14:18:43,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21489 conditions, 3367 events. 1727/3367 cut-off events. For 76683/76934 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 24205 event pairs, 235 based on Foata normal form. 140/3412 useless extension candidates. Maximal degree in co-relation 21385. Up to 1137 conditions per place. [2024-01-30 14:18:43,750 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 258 selfloop transitions, 157 changer transitions 0/456 dead transitions. [2024-01-30 14:18:43,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 456 transitions, 8109 flow [2024-01-30 14:18:43,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-30 14:18:43,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-30 14:18:43,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 358 transitions. [2024-01-30 14:18:43,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5264705882352941 [2024-01-30 14:18:43,751 INFO L175 Difference]: Start difference. First operand has 309 places, 390 transitions, 6578 flow. Second operand 10 states and 358 transitions. [2024-01-30 14:18:43,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 456 transitions, 8109 flow [2024-01-30 14:18:43,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 456 transitions, 7937 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-01-30 14:18:44,000 INFO L231 Difference]: Finished difference. Result has 315 places, 397 transitions, 6845 flow [2024-01-30 14:18:44,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=6406, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6845, PETRI_PLACES=315, PETRI_TRANSITIONS=397} [2024-01-30 14:18:44,001 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 243 predicate places. [2024-01-30 14:18:44,001 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 397 transitions, 6845 flow [2024-01-30 14:18:44,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 27.444444444444443) internal successors, (247), 9 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) [2024-01-30 14:18:44,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:44,002 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] [2024-01-30 14:18:44,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-01-30 14:18:44,002 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:44,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:44,002 INFO L85 PathProgramCache]: Analyzing trace with hash 980557633, now seen corresponding path program 2 times [2024-01-30 14:18:44,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:44,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907599594] [2024-01-30 14:18:44,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:44,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:44,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:44,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:44,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:44,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907599594] [2024-01-30 14:18:44,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907599594] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:44,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:44,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:18:44,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591195862] [2024-01-30 14:18:44,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:44,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-30 14:18:44,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:44,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-30 14:18:44,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-01-30 14:18:44,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-01-30 14:18:44,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 397 transitions, 6845 flow. Second operand has 9 states, 9 states have (on average 27.444444444444443) internal successors, (247), 9 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) [2024-01-30 14:18:44,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:44,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-01-30 14:18:44,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:44,930 INFO L124 PetriNetUnfolderBase]: 1759/3431 cut-off events. [2024-01-30 14:18:44,931 INFO L125 PetriNetUnfolderBase]: For 79726/79977 co-relation queries the response was YES. [2024-01-30 14:18:44,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22341 conditions, 3431 events. 1759/3431 cut-off events. For 79726/79977 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 24715 event pairs, 235 based on Foata normal form. 128/3464 useless extension candidates. Maximal degree in co-relation 22236. Up to 1149 conditions per place. [2024-01-30 14:18:44,972 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 266 selfloop transitions, 160 changer transitions 0/467 dead transitions. [2024-01-30 14:18:44,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 467 transitions, 8408 flow [2024-01-30 14:18:44,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-30 14:18:44,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-30 14:18:44,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 422 transitions. [2024-01-30 14:18:44,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5171568627450981 [2024-01-30 14:18:44,973 INFO L175 Difference]: Start difference. First operand has 315 places, 397 transitions, 6845 flow. Second operand 12 states and 422 transitions. [2024-01-30 14:18:44,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 467 transitions, 8408 flow [2024-01-30 14:18:45,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 467 transitions, 8146 flow, removed 40 selfloop flow, removed 5 redundant places. [2024-01-30 14:18:45,232 INFO L231 Difference]: Finished difference. Result has 323 places, 400 transitions, 6975 flow [2024-01-30 14:18:45,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=6607, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6975, PETRI_PLACES=323, PETRI_TRANSITIONS=400} [2024-01-30 14:18:45,232 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 251 predicate places. [2024-01-30 14:18:45,233 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 400 transitions, 6975 flow [2024-01-30 14:18:45,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 27.444444444444443) internal successors, (247), 9 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) [2024-01-30 14:18:45,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:45,233 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] [2024-01-30 14:18:45,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-01-30 14:18:45,233 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:45,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:45,234 INFO L85 PathProgramCache]: Analyzing trace with hash -485043351, now seen corresponding path program 3 times [2024-01-30 14:18:45,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:45,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271918449] [2024-01-30 14:18:45,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:45,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:45,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:45,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:45,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:45,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271918449] [2024-01-30 14:18:45,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271918449] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:45,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:45,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:18:45,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291226477] [2024-01-30 14:18:45,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:45,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-30 14:18:45,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:45,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-30 14:18:45,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-01-30 14:18:45,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-01-30 14:18:45,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 400 transitions, 6975 flow. Second operand has 9 states, 9 states have (on average 27.444444444444443) internal successors, (247), 9 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) [2024-01-30 14:18:45,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:45,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-01-30 14:18:45,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:46,168 INFO L124 PetriNetUnfolderBase]: 1791/3491 cut-off events. [2024-01-30 14:18:46,168 INFO L125 PetriNetUnfolderBase]: For 81454/81702 co-relation queries the response was YES. [2024-01-30 14:18:46,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22829 conditions, 3491 events. 1791/3491 cut-off events. For 81454/81702 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 25228 event pairs, 220 based on Foata normal form. 126/3519 useless extension candidates. Maximal degree in co-relation 22722. Up to 1159 conditions per place. [2024-01-30 14:18:46,209 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 224 selfloop transitions, 194 changer transitions 0/459 dead transitions. [2024-01-30 14:18:46,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 459 transitions, 8395 flow [2024-01-30 14:18:46,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-30 14:18:46,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-30 14:18:46,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 384 transitions. [2024-01-30 14:18:46,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5133689839572193 [2024-01-30 14:18:46,211 INFO L175 Difference]: Start difference. First operand has 323 places, 400 transitions, 6975 flow. Second operand 11 states and 384 transitions. [2024-01-30 14:18:46,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 459 transitions, 8395 flow [2024-01-30 14:18:46,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 459 transitions, 8054 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-01-30 14:18:46,500 INFO L231 Difference]: Finished difference. Result has 326 places, 415 transitions, 7340 flow [2024-01-30 14:18:46,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=6637, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7340, PETRI_PLACES=326, PETRI_TRANSITIONS=415} [2024-01-30 14:18:46,501 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 254 predicate places. [2024-01-30 14:18:46,501 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 415 transitions, 7340 flow [2024-01-30 14:18:46,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 27.444444444444443) internal successors, (247), 9 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) [2024-01-30 14:18:46,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:46,501 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] [2024-01-30 14:18:46,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-01-30 14:18:46,502 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:46,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:46,502 INFO L85 PathProgramCache]: Analyzing trace with hash 2089884645, now seen corresponding path program 4 times [2024-01-30 14:18:46,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:46,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078482200] [2024-01-30 14:18:46,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:46,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:46,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:46,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:46,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:46,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078482200] [2024-01-30 14:18:46,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078482200] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:46,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:46,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:18:46,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974125268] [2024-01-30 14:18:46,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:46,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-30 14:18:46,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:46,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-30 14:18:46,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-01-30 14:18:46,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-01-30 14:18:46,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 415 transitions, 7340 flow. Second operand has 9 states, 9 states have (on average 27.444444444444443) internal successors, (247), 9 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) [2024-01-30 14:18:46,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:46,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-01-30 14:18:46,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:47,464 INFO L124 PetriNetUnfolderBase]: 1823/3547 cut-off events. [2024-01-30 14:18:47,464 INFO L125 PetriNetUnfolderBase]: For 88376/88625 co-relation queries the response was YES. [2024-01-30 14:18:47,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23526 conditions, 3547 events. 1823/3547 cut-off events. For 88376/88625 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 25594 event pairs, 284 based on Foata normal form. 138/3587 useless extension candidates. Maximal degree in co-relation 23417. Up to 1573 conditions per place. [2024-01-30 14:18:47,510 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 249 selfloop transitions, 165 changer transitions 0/455 dead transitions. [2024-01-30 14:18:47,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 455 transitions, 8562 flow [2024-01-30 14:18:47,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-30 14:18:47,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-30 14:18:47,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 294 transitions. [2024-01-30 14:18:47,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5404411764705882 [2024-01-30 14:18:47,512 INFO L175 Difference]: Start difference. First operand has 326 places, 415 transitions, 7340 flow. Second operand 8 states and 294 transitions. [2024-01-30 14:18:47,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 455 transitions, 8562 flow [2024-01-30 14:18:47,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 455 transitions, 8273 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-01-30 14:18:47,793 INFO L231 Difference]: Finished difference. Result has 327 places, 418 transitions, 7434 flow [2024-01-30 14:18:47,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=7054, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7434, PETRI_PLACES=327, PETRI_TRANSITIONS=418} [2024-01-30 14:18:47,798 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 255 predicate places. [2024-01-30 14:18:47,798 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 418 transitions, 7434 flow [2024-01-30 14:18:47,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 27.444444444444443) internal successors, (247), 9 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) [2024-01-30 14:18:47,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:47,798 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] [2024-01-30 14:18:47,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-01-30 14:18:47,799 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:47,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:47,799 INFO L85 PathProgramCache]: Analyzing trace with hash 2088680753, now seen corresponding path program 5 times [2024-01-30 14:18:47,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:47,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312092682] [2024-01-30 14:18:47,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:47,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:47,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:47,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:47,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:47,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312092682] [2024-01-30 14:18:47,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312092682] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:47,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:47,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:18:47,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342824461] [2024-01-30 14:18:47,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:47,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-30 14:18:47,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:47,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-30 14:18:47,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-01-30 14:18:47,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-01-30 14:18:48,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 418 transitions, 7434 flow. Second operand has 9 states, 9 states have (on average 27.444444444444443) internal successors, (247), 9 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) [2024-01-30 14:18:48,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:48,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-01-30 14:18:48,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:48,779 INFO L124 PetriNetUnfolderBase]: 1793/3497 cut-off events. [2024-01-30 14:18:48,779 INFO L125 PetriNetUnfolderBase]: For 86365/86612 co-relation queries the response was YES. [2024-01-30 14:18:48,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23029 conditions, 3497 events. 1793/3497 cut-off events. For 86365/86612 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 25231 event pairs, 270 based on Foata normal form. 142/3541 useless extension candidates. Maximal degree in co-relation 22919. Up to 1573 conditions per place. [2024-01-30 14:18:48,824 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 270 selfloop transitions, 149 changer transitions 0/460 dead transitions. [2024-01-30 14:18:48,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 460 transitions, 8689 flow [2024-01-30 14:18:48,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-30 14:18:48,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-30 14:18:48,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 325 transitions. [2024-01-30 14:18:48,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5310457516339869 [2024-01-30 14:18:48,826 INFO L175 Difference]: Start difference. First operand has 327 places, 418 transitions, 7434 flow. Second operand 9 states and 325 transitions. [2024-01-30 14:18:48,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 460 transitions, 8689 flow [2024-01-30 14:18:49,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 460 transitions, 8505 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-30 14:18:49,129 INFO L231 Difference]: Finished difference. Result has 332 places, 418 transitions, 7568 flow [2024-01-30 14:18:49,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=7250, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7568, PETRI_PLACES=332, PETRI_TRANSITIONS=418} [2024-01-30 14:18:49,130 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 260 predicate places. [2024-01-30 14:18:49,130 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 418 transitions, 7568 flow [2024-01-30 14:18:49,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 27.444444444444443) internal successors, (247), 9 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) [2024-01-30 14:18:49,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:49,130 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] [2024-01-30 14:18:49,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-01-30 14:18:49,131 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:49,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:49,131 INFO L85 PathProgramCache]: Analyzing trace with hash -955083049, now seen corresponding path program 1 times [2024-01-30 14:18:49,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:49,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502018379] [2024-01-30 14:18:49,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:49,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:49,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:49,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:49,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:49,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502018379] [2024-01-30 14:18:49,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502018379] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:49,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:49,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-30 14:18:49,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987515696] [2024-01-30 14:18:49,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:49,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-30 14:18:49,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:49,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-30 14:18:49,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-01-30 14:18:49,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:18:49,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 418 transitions, 7568 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:49,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:49,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:18:49,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:50,316 INFO L124 PetriNetUnfolderBase]: 2346/4258 cut-off events. [2024-01-30 14:18:50,316 INFO L125 PetriNetUnfolderBase]: For 90278/90593 co-relation queries the response was YES. [2024-01-30 14:18:50,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27369 conditions, 4258 events. 2346/4258 cut-off events. For 90278/90593 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 28999 event pairs, 647 based on Foata normal form. 65/4216 useless extension candidates. Maximal degree in co-relation 27258. Up to 3596 conditions per place. [2024-01-30 14:18:50,367 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 359 selfloop transitions, 64 changer transitions 0/446 dead transitions. [2024-01-30 14:18:50,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 446 transitions, 8552 flow [2024-01-30 14:18:50,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-30 14:18:50,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-30 14:18:50,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 226 transitions. [2024-01-30 14:18:50,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.369281045751634 [2024-01-30 14:18:50,371 INFO L175 Difference]: Start difference. First operand has 332 places, 418 transitions, 7568 flow. Second operand 9 states and 226 transitions. [2024-01-30 14:18:50,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 446 transitions, 8552 flow [2024-01-30 14:18:50,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 446 transitions, 8282 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-30 14:18:50,762 INFO L231 Difference]: Finished difference. Result has 335 places, 420 transitions, 7458 flow [2024-01-30 14:18:50,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=7298, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7458, PETRI_PLACES=335, PETRI_TRANSITIONS=420} [2024-01-30 14:18:50,763 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 263 predicate places. [2024-01-30 14:18:50,763 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 420 transitions, 7458 flow [2024-01-30 14:18:50,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:50,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:50,764 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] [2024-01-30 14:18:50,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-01-30 14:18:50,764 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:50,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:50,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1586887749, now seen corresponding path program 1 times [2024-01-30 14:18:50,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:50,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502469588] [2024-01-30 14:18:50,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:50,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:50,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:50,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:50,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:50,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502469588] [2024-01-30 14:18:50,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502469588] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:50,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:50,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:18:50,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504563857] [2024-01-30 14:18:50,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:50,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-30 14:18:50,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:50,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-30 14:18:50,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-01-30 14:18:50,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-01-30 14:18:50,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 420 transitions, 7458 flow. Second operand has 9 states, 9 states have (on average 27.444444444444443) internal successors, (247), 9 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) [2024-01-30 14:18:50,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:50,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-01-30 14:18:50,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:51,848 INFO L124 PetriNetUnfolderBase]: 1793/3507 cut-off events. [2024-01-30 14:18:51,849 INFO L125 PetriNetUnfolderBase]: For 83091/83334 co-relation queries the response was YES. [2024-01-30 14:18:51,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22696 conditions, 3507 events. 1793/3507 cut-off events. For 83091/83334 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 25350 event pairs, 257 based on Foata normal form. 134/3543 useless extension candidates. Maximal degree in co-relation 22584. Up to 1602 conditions per place. [2024-01-30 14:18:51,892 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 246 selfloop transitions, 173 changer transitions 0/460 dead transitions. [2024-01-30 14:18:51,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 460 transitions, 8642 flow [2024-01-30 14:18:51,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-30 14:18:51,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-30 14:18:51,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 350 transitions. [2024-01-30 14:18:51,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5147058823529411 [2024-01-30 14:18:51,894 INFO L175 Difference]: Start difference. First operand has 335 places, 420 transitions, 7458 flow. Second operand 10 states and 350 transitions. [2024-01-30 14:18:51,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 460 transitions, 8642 flow [2024-01-30 14:18:52,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 460 transitions, 8567 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-01-30 14:18:52,178 INFO L231 Difference]: Finished difference. Result has 341 places, 423 transitions, 7839 flow [2024-01-30 14:18:52,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=7383, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7839, PETRI_PLACES=341, PETRI_TRANSITIONS=423} [2024-01-30 14:18:52,179 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 269 predicate places. [2024-01-30 14:18:52,179 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 423 transitions, 7839 flow [2024-01-30 14:18:52,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 27.444444444444443) internal successors, (247), 9 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) [2024-01-30 14:18:52,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:52,180 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] [2024-01-30 14:18:52,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-01-30 14:18:52,180 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:52,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:52,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1194888925, now seen corresponding path program 2 times [2024-01-30 14:18:52,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:52,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47068699] [2024-01-30 14:18:52,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:52,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:52,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:52,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:52,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:52,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47068699] [2024-01-30 14:18:52,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47068699] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:52,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:52,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-30 14:18:52,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752496254] [2024-01-30 14:18:52,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:52,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-30 14:18:52,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:52,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-30 14:18:52,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-01-30 14:18:52,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:18:52,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 423 transitions, 7839 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:52,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:52,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:18:52,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:53,368 INFO L124 PetriNetUnfolderBase]: 2431/4433 cut-off events. [2024-01-30 14:18:53,368 INFO L125 PetriNetUnfolderBase]: For 93280/93447 co-relation queries the response was YES. [2024-01-30 14:18:53,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28985 conditions, 4433 events. 2431/4433 cut-off events. For 93280/93447 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 30455 event pairs, 292 based on Foata normal form. 56/4392 useless extension candidates. Maximal degree in co-relation 28870. Up to 1638 conditions per place. [2024-01-30 14:18:53,422 INFO L140 encePairwiseOnDemand]: 52/68 looper letters, 295 selfloop transitions, 190 changer transitions 0/506 dead transitions. [2024-01-30 14:18:53,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 506 transitions, 9512 flow [2024-01-30 14:18:53,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-30 14:18:53,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-30 14:18:53,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 329 transitions. [2024-01-30 14:18:53,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40318627450980393 [2024-01-30 14:18:53,424 INFO L175 Difference]: Start difference. First operand has 341 places, 423 transitions, 7839 flow. Second operand 12 states and 329 transitions. [2024-01-30 14:18:53,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 506 transitions, 9512 flow [2024-01-30 14:18:53,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 506 transitions, 9270 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-01-30 14:18:53,853 INFO L231 Difference]: Finished difference. Result has 349 places, 439 transitions, 8208 flow [2024-01-30 14:18:53,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=7605, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8208, PETRI_PLACES=349, PETRI_TRANSITIONS=439} [2024-01-30 14:18:53,854 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 277 predicate places. [2024-01-30 14:18:53,854 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 439 transitions, 8208 flow [2024-01-30 14:18:53,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:53,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:53,854 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] [2024-01-30 14:18:53,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-01-30 14:18:53,854 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:53,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:53,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1606125481, now seen corresponding path program 3 times [2024-01-30 14:18:53,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:53,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893912714] [2024-01-30 14:18:53,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:53,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:53,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:54,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:54,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:54,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893912714] [2024-01-30 14:18:54,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893912714] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:54,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:54,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-30 14:18:54,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854701265] [2024-01-30 14:18:54,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:54,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-30 14:18:54,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:54,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-30 14:18:54,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-01-30 14:18:54,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:18:54,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 439 transitions, 8208 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:54,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:54,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:18:54,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:55,193 INFO L124 PetriNetUnfolderBase]: 2419/4413 cut-off events. [2024-01-30 14:18:55,194 INFO L125 PetriNetUnfolderBase]: For 97399/97590 co-relation queries the response was YES. [2024-01-30 14:18:55,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30328 conditions, 4413 events. 2419/4413 cut-off events. For 97399/97590 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 30303 event pairs, 292 based on Foata normal form. 56/4372 useless extension candidates. Maximal degree in co-relation 30211. Up to 1634 conditions per place. [2024-01-30 14:18:55,236 INFO L140 encePairwiseOnDemand]: 52/68 looper letters, 303 selfloop transitions, 190 changer transitions 0/514 dead transitions. [2024-01-30 14:18:55,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 514 transitions, 9804 flow [2024-01-30 14:18:55,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-01-30 14:18:55,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-01-30 14:18:55,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 374 transitions. [2024-01-30 14:18:55,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-01-30 14:18:55,238 INFO L175 Difference]: Start difference. First operand has 349 places, 439 transitions, 8208 flow. Second operand 14 states and 374 transitions. [2024-01-30 14:18:55,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 514 transitions, 9804 flow [2024-01-30 14:18:55,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 514 transitions, 9468 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-01-30 14:18:55,618 INFO L231 Difference]: Finished difference. Result has 353 places, 439 transitions, 8260 flow [2024-01-30 14:18:55,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=7872, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=190, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=8260, PETRI_PLACES=353, PETRI_TRANSITIONS=439} [2024-01-30 14:18:55,619 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 281 predicate places. [2024-01-30 14:18:55,619 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 439 transitions, 8260 flow [2024-01-30 14:18:55,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:55,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:55,620 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] [2024-01-30 14:18:55,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-01-30 14:18:55,620 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:55,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:55,620 INFO L85 PathProgramCache]: Analyzing trace with hash 157684713, now seen corresponding path program 4 times [2024-01-30 14:18:55,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:55,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998068434] [2024-01-30 14:18:55,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:55,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:55,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:55,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:55,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:55,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998068434] [2024-01-30 14:18:55,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998068434] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:55,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:55,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-30 14:18:55,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247198606] [2024-01-30 14:18:55,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:55,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-30 14:18:55,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:55,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-30 14:18:55,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-01-30 14:18:55,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:18:55,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 439 transitions, 8260 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:55,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:55,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:18:55,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:57,005 INFO L124 PetriNetUnfolderBase]: 2575/4709 cut-off events. [2024-01-30 14:18:57,005 INFO L125 PetriNetUnfolderBase]: For 103514/103705 co-relation queries the response was YES. [2024-01-30 14:18:57,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32056 conditions, 4709 events. 2575/4709 cut-off events. For 103514/103705 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 32680 event pairs, 266 based on Foata normal form. 56/4668 useless extension candidates. Maximal degree in co-relation 31938. Up to 1690 conditions per place. [2024-01-30 14:18:57,065 INFO L140 encePairwiseOnDemand]: 52/68 looper letters, 273 selfloop transitions, 223 changer transitions 0/517 dead transitions. [2024-01-30 14:18:57,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 517 transitions, 10005 flow [2024-01-30 14:18:57,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-01-30 14:18:57,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-01-30 14:18:57,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 348 transitions. [2024-01-30 14:18:57,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3936651583710407 [2024-01-30 14:18:57,067 INFO L175 Difference]: Start difference. First operand has 353 places, 439 transitions, 8260 flow. Second operand 13 states and 348 transitions. [2024-01-30 14:18:57,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 517 transitions, 10005 flow [2024-01-30 14:18:57,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 517 transitions, 9654 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-01-30 14:18:57,533 INFO L231 Difference]: Finished difference. Result has 356 places, 453 transitions, 8666 flow [2024-01-30 14:18:57,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=7927, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8666, PETRI_PLACES=356, PETRI_TRANSITIONS=453} [2024-01-30 14:18:57,533 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 284 predicate places. [2024-01-30 14:18:57,533 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 453 transitions, 8666 flow [2024-01-30 14:18:57,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:57,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:57,534 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] [2024-01-30 14:18:57,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-01-30 14:18:57,534 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:57,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:57,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1616671649, now seen corresponding path program 5 times [2024-01-30 14:18:57,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:57,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288485845] [2024-01-30 14:18:57,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:57,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:57,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:57,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:57,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:57,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288485845] [2024-01-30 14:18:57,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288485845] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:57,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:57,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-30 14:18:57,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627980394] [2024-01-30 14:18:57,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:57,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-30 14:18:57,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:57,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-30 14:18:57,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-01-30 14:18:57,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:18:57,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 453 transitions, 8666 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:57,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:57,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:18:57,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:18:58,889 INFO L124 PetriNetUnfolderBase]: 2686/4872 cut-off events. [2024-01-30 14:18:58,889 INFO L125 PetriNetUnfolderBase]: For 113332/113523 co-relation queries the response was YES. [2024-01-30 14:18:58,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34030 conditions, 4872 events. 2686/4872 cut-off events. For 113332/113523 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 33763 event pairs, 277 based on Foata normal form. 56/4831 useless extension candidates. Maximal degree in co-relation 33910. Up to 1722 conditions per place. [2024-01-30 14:18:58,948 INFO L140 encePairwiseOnDemand]: 52/68 looper letters, 268 selfloop transitions, 234 changer transitions 0/523 dead transitions. [2024-01-30 14:18:58,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 523 transitions, 10302 flow [2024-01-30 14:18:58,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-01-30 14:18:58,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-01-30 14:18:58,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 343 transitions. [2024-01-30 14:18:58,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38800904977375567 [2024-01-30 14:18:58,949 INFO L175 Difference]: Start difference. First operand has 356 places, 453 transitions, 8666 flow. Second operand 13 states and 343 transitions. [2024-01-30 14:18:58,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 523 transitions, 10302 flow [2024-01-30 14:18:59,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 523 transitions, 9952 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-01-30 14:18:59,438 INFO L231 Difference]: Finished difference. Result has 361 places, 463 transitions, 8974 flow [2024-01-30 14:18:59,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=8323, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=224, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8974, PETRI_PLACES=361, PETRI_TRANSITIONS=463} [2024-01-30 14:18:59,439 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 289 predicate places. [2024-01-30 14:18:59,439 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 463 transitions, 8974 flow [2024-01-30 14:18:59,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:59,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:18:59,439 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] [2024-01-30 14:18:59,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-01-30 14:18:59,440 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:18:59,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:18:59,440 INFO L85 PathProgramCache]: Analyzing trace with hash 437569871, now seen corresponding path program 2 times [2024-01-30 14:18:59,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:18:59,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681755608] [2024-01-30 14:18:59,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:18:59,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:18:59,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:18:59,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:18:59,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:18:59,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681755608] [2024-01-30 14:18:59,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681755608] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:18:59,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:18:59,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-30 14:18:59,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423094210] [2024-01-30 14:18:59,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:18:59,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-30 14:18:59,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:18:59,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-30 14:18:59,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-01-30 14:18:59,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:18:59,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 463 transitions, 8974 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:18:59,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:18:59,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:18:59,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:00,888 INFO L124 PetriNetUnfolderBase]: 2642/4791 cut-off events. [2024-01-30 14:19:00,889 INFO L125 PetriNetUnfolderBase]: For 121490/122219 co-relation queries the response was YES. [2024-01-30 14:19:00,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34860 conditions, 4791 events. 2642/4791 cut-off events. For 121490/122219 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 33018 event pairs, 426 based on Foata normal form. 101/4771 useless extension candidates. Maximal degree in co-relation 34738. Up to 1833 conditions per place. [2024-01-30 14:19:00,941 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 320 selfloop transitions, 179 changer transitions 0/528 dead transitions. [2024-01-30 14:19:00,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 528 transitions, 10438 flow [2024-01-30 14:19:00,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-30 14:19:00,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-30 14:19:00,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 319 transitions. [2024-01-30 14:19:00,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3909313725490196 [2024-01-30 14:19:00,943 INFO L175 Difference]: Start difference. First operand has 361 places, 463 transitions, 8974 flow. Second operand 12 states and 319 transitions. [2024-01-30 14:19:00,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 528 transitions, 10438 flow [2024-01-30 14:19:01,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 528 transitions, 10040 flow, removed 20 selfloop flow, removed 10 redundant places. [2024-01-30 14:19:01,410 INFO L231 Difference]: Finished difference. Result has 363 places, 463 transitions, 8963 flow [2024-01-30 14:19:01,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=8590, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8963, PETRI_PLACES=363, PETRI_TRANSITIONS=463} [2024-01-30 14:19:01,411 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 291 predicate places. [2024-01-30 14:19:01,411 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 463 transitions, 8963 flow [2024-01-30 14:19:01,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:01,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:01,411 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] [2024-01-30 14:19:01,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-01-30 14:19:01,412 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:19:01,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:01,412 INFO L85 PathProgramCache]: Analyzing trace with hash 854761363, now seen corresponding path program 6 times [2024-01-30 14:19:01,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:01,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496153570] [2024-01-30 14:19:01,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:01,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:01,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:01,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:19:01,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:01,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496153570] [2024-01-30 14:19:01,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496153570] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:01,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:01,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-30 14:19:01,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149056782] [2024-01-30 14:19:01,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:01,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-30 14:19:01,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:01,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-30 14:19:01,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-01-30 14:19:01,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:19:01,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 463 transitions, 8963 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:01,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:01,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:19:01,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:02,762 INFO L124 PetriNetUnfolderBase]: 2559/4662 cut-off events. [2024-01-30 14:19:02,762 INFO L125 PetriNetUnfolderBase]: For 115500/115683 co-relation queries the response was YES. [2024-01-30 14:19:02,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32618 conditions, 4662 events. 2559/4662 cut-off events. For 115500/115683 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 32295 event pairs, 435 based on Foata normal form. 102/4672 useless extension candidates. Maximal degree in co-relation 32496. Up to 2350 conditions per place. [2024-01-30 14:19:02,824 INFO L140 encePairwiseOnDemand]: 56/68 looper letters, 332 selfloop transitions, 162 changer transitions 0/515 dead transitions. [2024-01-30 14:19:02,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 515 transitions, 10427 flow [2024-01-30 14:19:02,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-30 14:19:02,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-30 14:19:02,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 271 transitions. [2024-01-30 14:19:02,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3985294117647059 [2024-01-30 14:19:02,825 INFO L175 Difference]: Start difference. First operand has 363 places, 463 transitions, 8963 flow. Second operand 10 states and 271 transitions. [2024-01-30 14:19:02,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 515 transitions, 10427 flow [2024-01-30 14:19:03,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 515 transitions, 10051 flow, removed 9 selfloop flow, removed 11 redundant places. [2024-01-30 14:19:03,286 INFO L231 Difference]: Finished difference. Result has 362 places, 463 transitions, 8953 flow [2024-01-30 14:19:03,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=8599, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8953, PETRI_PLACES=362, PETRI_TRANSITIONS=463} [2024-01-30 14:19:03,287 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 290 predicate places. [2024-01-30 14:19:03,287 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 463 transitions, 8953 flow [2024-01-30 14:19:03,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:03,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:03,287 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] [2024-01-30 14:19:03,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-01-30 14:19:03,288 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:19:03,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:03,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1351426413, now seen corresponding path program 7 times [2024-01-30 14:19:03,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:03,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209021180] [2024-01-30 14:19:03,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:03,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:03,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:03,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:19:03,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:03,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209021180] [2024-01-30 14:19:03,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209021180] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:03,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:03,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-30 14:19:03,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311711556] [2024-01-30 14:19:03,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:03,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-30 14:19:03,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:03,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-30 14:19:03,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-01-30 14:19:03,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:19:03,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 463 transitions, 8953 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:03,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:03,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:19:03,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:04,691 INFO L124 PetriNetUnfolderBase]: 2517/4592 cut-off events. [2024-01-30 14:19:04,691 INFO L125 PetriNetUnfolderBase]: For 106316/106499 co-relation queries the response was YES. [2024-01-30 14:19:04,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32122 conditions, 4592 events. 2517/4592 cut-off events. For 106316/106499 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 31782 event pairs, 413 based on Foata normal form. 68/4568 useless extension candidates. Maximal degree in co-relation 31999. Up to 2336 conditions per place. [2024-01-30 14:19:04,753 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 334 selfloop transitions, 162 changer transitions 0/517 dead transitions. [2024-01-30 14:19:04,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 517 transitions, 10417 flow [2024-01-30 14:19:04,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-30 14:19:04,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-30 14:19:04,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 291 transitions. [2024-01-30 14:19:04,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3890374331550802 [2024-01-30 14:19:04,755 INFO L175 Difference]: Start difference. First operand has 362 places, 463 transitions, 8953 flow. Second operand 11 states and 291 transitions. [2024-01-30 14:19:04,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 517 transitions, 10417 flow [2024-01-30 14:19:05,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 517 transitions, 10125 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-01-30 14:19:05,229 INFO L231 Difference]: Finished difference. Result has 365 places, 463 transitions, 9021 flow [2024-01-30 14:19:05,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=8661, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9021, PETRI_PLACES=365, PETRI_TRANSITIONS=463} [2024-01-30 14:19:05,230 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 293 predicate places. [2024-01-30 14:19:05,230 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 463 transitions, 9021 flow [2024-01-30 14:19:05,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:05,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:05,231 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] [2024-01-30 14:19:05,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-01-30 14:19:05,231 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:19:05,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:05,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1029582863, now seen corresponding path program 8 times [2024-01-30 14:19:05,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:05,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854284517] [2024-01-30 14:19:05,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:05,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:05,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:05,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:19:05,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:05,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854284517] [2024-01-30 14:19:05,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854284517] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:05,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:05,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-30 14:19:05,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129520516] [2024-01-30 14:19:05,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:05,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-30 14:19:05,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:05,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-30 14:19:05,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-01-30 14:19:05,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:19:05,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 463 transitions, 9021 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:05,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:05,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:19:05,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:06,633 INFO L124 PetriNetUnfolderBase]: 2469/4512 cut-off events. [2024-01-30 14:19:06,633 INFO L125 PetriNetUnfolderBase]: For 106458/106641 co-relation queries the response was YES. [2024-01-30 14:19:06,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31677 conditions, 4512 events. 2469/4512 cut-off events. For 106458/106641 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 31182 event pairs, 413 based on Foata normal form. 72/4492 useless extension candidates. Maximal degree in co-relation 31553. Up to 2320 conditions per place. [2024-01-30 14:19:06,683 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 310 selfloop transitions, 174 changer transitions 0/505 dead transitions. [2024-01-30 14:19:06,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 505 transitions, 10302 flow [2024-01-30 14:19:06,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-30 14:19:06,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-30 14:19:06,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 266 transitions. [2024-01-30 14:19:06,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3911764705882353 [2024-01-30 14:19:06,685 INFO L175 Difference]: Start difference. First operand has 365 places, 463 transitions, 9021 flow. Second operand 10 states and 266 transitions. [2024-01-30 14:19:06,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 505 transitions, 10302 flow [2024-01-30 14:19:07,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 505 transitions, 9985 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-01-30 14:19:07,093 INFO L231 Difference]: Finished difference. Result has 366 places, 463 transitions, 9068 flow [2024-01-30 14:19:07,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=8704, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9068, PETRI_PLACES=366, PETRI_TRANSITIONS=463} [2024-01-30 14:19:07,094 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 294 predicate places. [2024-01-30 14:19:07,094 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 463 transitions, 9068 flow [2024-01-30 14:19:07,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:07,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:07,094 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] [2024-01-30 14:19:07,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-01-30 14:19:07,094 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:19:07,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:07,095 INFO L85 PathProgramCache]: Analyzing trace with hash -583152319, now seen corresponding path program 3 times [2024-01-30 14:19:07,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:07,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092947959] [2024-01-30 14:19:07,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:07,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:07,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:07,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:19:07,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:07,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092947959] [2024-01-30 14:19:07,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092947959] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:07,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:07,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-30 14:19:07,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398369174] [2024-01-30 14:19:07,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:07,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-30 14:19:07,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:07,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-30 14:19:07,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-01-30 14:19:07,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:19:07,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 463 transitions, 9068 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:07,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:07,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:19:07,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:08,420 INFO L124 PetriNetUnfolderBase]: 2453/4459 cut-off events. [2024-01-30 14:19:08,420 INFO L125 PetriNetUnfolderBase]: For 112454/113175 co-relation queries the response was YES. [2024-01-30 14:19:08,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31988 conditions, 4459 events. 2453/4459 cut-off events. For 112454/113175 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 30769 event pairs, 501 based on Foata normal form. 93/4407 useless extension candidates. Maximal degree in co-relation 31862. Up to 3239 conditions per place. [2024-01-30 14:19:08,477 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 393 selfloop transitions, 107 changer transitions 0/529 dead transitions. [2024-01-30 14:19:08,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 529 transitions, 10508 flow [2024-01-30 14:19:08,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-01-30 14:19:08,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-01-30 14:19:08,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 332 transitions. [2024-01-30 14:19:08,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3755656108597285 [2024-01-30 14:19:08,478 INFO L175 Difference]: Start difference. First operand has 366 places, 463 transitions, 9068 flow. Second operand 13 states and 332 transitions. [2024-01-30 14:19:08,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 529 transitions, 10508 flow [2024-01-30 14:19:08,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 529 transitions, 10136 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-01-30 14:19:08,900 INFO L231 Difference]: Finished difference. Result has 370 places, 463 transitions, 8928 flow [2024-01-30 14:19:08,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=8696, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8928, PETRI_PLACES=370, PETRI_TRANSITIONS=463} [2024-01-30 14:19:08,900 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 298 predicate places. [2024-01-30 14:19:08,900 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 463 transitions, 8928 flow [2024-01-30 14:19:08,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:08,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:08,901 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] [2024-01-30 14:19:08,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-01-30 14:19:08,901 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:19:08,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:08,901 INFO L85 PathProgramCache]: Analyzing trace with hash 105554471, now seen corresponding path program 4 times [2024-01-30 14:19:08,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:08,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128374559] [2024-01-30 14:19:08,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:08,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:08,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:09,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:19:09,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:09,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128374559] [2024-01-30 14:19:09,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128374559] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:09,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:09,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-30 14:19:09,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706471782] [2024-01-30 14:19:09,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:09,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-30 14:19:09,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:09,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-30 14:19:09,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-01-30 14:19:09,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:19:09,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 463 transitions, 8928 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:09,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:09,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:19:09,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:10,338 INFO L124 PetriNetUnfolderBase]: 2437/4432 cut-off events. [2024-01-30 14:19:10,338 INFO L125 PetriNetUnfolderBase]: For 108534/109255 co-relation queries the response was YES. [2024-01-30 14:19:10,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31417 conditions, 4432 events. 2437/4432 cut-off events. For 108534/109255 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 30536 event pairs, 498 based on Foata normal form. 97/4383 useless extension candidates. Maximal degree in co-relation 31290. Up to 3233 conditions per place. [2024-01-30 14:19:10,399 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 381 selfloop transitions, 113 changer transitions 0/523 dead transitions. [2024-01-30 14:19:10,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 523 transitions, 10252 flow [2024-01-30 14:19:10,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-01-30 14:19:10,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-01-30 14:19:10,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 348 transitions. [2024-01-30 14:19:10,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36554621848739494 [2024-01-30 14:19:10,400 INFO L175 Difference]: Start difference. First operand has 370 places, 463 transitions, 8928 flow. Second operand 14 states and 348 transitions. [2024-01-30 14:19:10,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 523 transitions, 10252 flow [2024-01-30 14:19:10,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 523 transitions, 9971 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-01-30 14:19:10,851 INFO L231 Difference]: Finished difference. Result has 372 places, 463 transitions, 8885 flow [2024-01-30 14:19:10,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=8647, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=8885, PETRI_PLACES=372, PETRI_TRANSITIONS=463} [2024-01-30 14:19:10,851 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 300 predicate places. [2024-01-30 14:19:10,852 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 463 transitions, 8885 flow [2024-01-30 14:19:10,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:10,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:10,852 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] [2024-01-30 14:19:10,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-01-30 14:19:10,853 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:19:10,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:10,853 INFO L85 PathProgramCache]: Analyzing trace with hash 2126890263, now seen corresponding path program 2 times [2024-01-30 14:19:10,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:10,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602681648] [2024-01-30 14:19:10,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:10,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:10,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:11,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:19:11,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:11,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602681648] [2024-01-30 14:19:11,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602681648] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:11,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:11,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-30 14:19:11,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694462174] [2024-01-30 14:19:11,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:11,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-30 14:19:11,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:11,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-30 14:19:11,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-01-30 14:19:11,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:19:11,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 463 transitions, 8885 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:11,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:11,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:19:11,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:12,151 INFO L124 PetriNetUnfolderBase]: 2473/4482 cut-off events. [2024-01-30 14:19:12,151 INFO L125 PetriNetUnfolderBase]: For 109511/110222 co-relation queries the response was YES. [2024-01-30 14:19:12,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31869 conditions, 4482 events. 2473/4482 cut-off events. For 109511/110222 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 30822 event pairs, 554 based on Foata normal form. 89/4412 useless extension candidates. Maximal degree in co-relation 31741. Up to 3906 conditions per place. [2024-01-30 14:19:12,201 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 410 selfloop transitions, 45 changer transitions 0/484 dead transitions. [2024-01-30 14:19:12,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 484 transitions, 9899 flow [2024-01-30 14:19:12,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-30 14:19:12,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-30 14:19:12,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-01-30 14:19:12,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3713235294117647 [2024-01-30 14:19:12,202 INFO L175 Difference]: Start difference. First operand has 372 places, 463 transitions, 8885 flow. Second operand 8 states and 202 transitions. [2024-01-30 14:19:12,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 484 transitions, 9899 flow [2024-01-30 14:19:12,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 484 transitions, 9740 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-01-30 14:19:12,619 INFO L231 Difference]: Finished difference. Result has 371 places, 464 transitions, 8836 flow [2024-01-30 14:19:12,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=8726, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8836, PETRI_PLACES=371, PETRI_TRANSITIONS=464} [2024-01-30 14:19:12,620 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 299 predicate places. [2024-01-30 14:19:12,620 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 464 transitions, 8836 flow [2024-01-30 14:19:12,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:12,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:12,620 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] [2024-01-30 14:19:12,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-01-30 14:19:12,620 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:19:12,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:12,621 INFO L85 PathProgramCache]: Analyzing trace with hash 959563753, now seen corresponding path program 3 times [2024-01-30 14:19:12,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:12,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61372903] [2024-01-30 14:19:12,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:12,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:12,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:12,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:19:12,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:12,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61372903] [2024-01-30 14:19:12,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61372903] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:12,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:12,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-30 14:19:12,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37339067] [2024-01-30 14:19:12,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:12,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-30 14:19:12,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:12,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-30 14:19:12,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-01-30 14:19:12,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:19:12,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 464 transitions, 8836 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:12,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:12,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:19:12,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:13,899 INFO L124 PetriNetUnfolderBase]: 2443/4480 cut-off events. [2024-01-30 14:19:13,900 INFO L125 PetriNetUnfolderBase]: For 106170/106856 co-relation queries the response was YES. [2024-01-30 14:19:13,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31376 conditions, 4480 events. 2443/4480 cut-off events. For 106170/106856 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 31228 event pairs, 514 based on Foata normal form. 90/4427 useless extension candidates. Maximal degree in co-relation 31247. Up to 3271 conditions per place. [2024-01-30 14:19:13,956 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 381 selfloop transitions, 102 changer transitions 0/512 dead transitions. [2024-01-30 14:19:13,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 512 transitions, 10226 flow [2024-01-30 14:19:13,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-30 14:19:13,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-30 14:19:13,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 234 transitions. [2024-01-30 14:19:13,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38235294117647056 [2024-01-30 14:19:13,957 INFO L175 Difference]: Start difference. First operand has 371 places, 464 transitions, 8836 flow. Second operand 9 states and 234 transitions. [2024-01-30 14:19:13,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 512 transitions, 10226 flow [2024-01-30 14:19:14,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 512 transitions, 10138 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-01-30 14:19:14,420 INFO L231 Difference]: Finished difference. Result has 375 places, 480 transitions, 9271 flow [2024-01-30 14:19:14,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=8752, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9271, PETRI_PLACES=375, PETRI_TRANSITIONS=480} [2024-01-30 14:19:14,421 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 303 predicate places. [2024-01-30 14:19:14,421 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 480 transitions, 9271 flow [2024-01-30 14:19:14,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:14,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:14,421 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] [2024-01-30 14:19:14,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-01-30 14:19:14,422 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:19:14,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:14,422 INFO L85 PathProgramCache]: Analyzing trace with hash 960633253, now seen corresponding path program 4 times [2024-01-30 14:19:14,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:14,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528755618] [2024-01-30 14:19:14,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:14,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:14,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:14,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:19:14,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:14,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528755618] [2024-01-30 14:19:14,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528755618] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:14,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:14,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-30 14:19:14,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323971638] [2024-01-30 14:19:14,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:14,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-30 14:19:14,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:14,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-30 14:19:14,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-01-30 14:19:14,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:19:14,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 480 transitions, 9271 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:14,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:14,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:19:14,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:15,806 INFO L124 PetriNetUnfolderBase]: 2441/4474 cut-off events. [2024-01-30 14:19:15,807 INFO L125 PetriNetUnfolderBase]: For 109262/109956 co-relation queries the response was YES. [2024-01-30 14:19:15,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31904 conditions, 4474 events. 2441/4474 cut-off events. For 109262/109956 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 31099 event pairs, 520 based on Foata normal form. 82/4413 useless extension candidates. Maximal degree in co-relation 31773. Up to 3271 conditions per place. [2024-01-30 14:19:15,864 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 370 selfloop transitions, 110 changer transitions 0/509 dead transitions. [2024-01-30 14:19:15,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 509 transitions, 10377 flow [2024-01-30 14:19:15,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-30 14:19:15,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-30 14:19:15,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 231 transitions. [2024-01-30 14:19:15,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37745098039215685 [2024-01-30 14:19:15,865 INFO L175 Difference]: Start difference. First operand has 375 places, 480 transitions, 9271 flow. Second operand 9 states and 231 transitions. [2024-01-30 14:19:15,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 509 transitions, 10377 flow [2024-01-30 14:19:16,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 509 transitions, 10258 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-01-30 14:19:16,314 INFO L231 Difference]: Finished difference. Result has 380 places, 480 transitions, 9378 flow [2024-01-30 14:19:16,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=9152, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9378, PETRI_PLACES=380, PETRI_TRANSITIONS=480} [2024-01-30 14:19:16,315 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 308 predicate places. [2024-01-30 14:19:16,315 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 480 transitions, 9378 flow [2024-01-30 14:19:16,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:16,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:16,316 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] [2024-01-30 14:19:16,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-01-30 14:19:16,316 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:19:16,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:16,316 INFO L85 PathProgramCache]: Analyzing trace with hash 401273361, now seen corresponding path program 6 times [2024-01-30 14:19:16,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:16,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623644909] [2024-01-30 14:19:16,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:16,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:16,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:16,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:19:16,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:16,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623644909] [2024-01-30 14:19:16,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623644909] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:16,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:16,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:19:16,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791289091] [2024-01-30 14:19:16,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:16,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-30 14:19:16,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:16,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-30 14:19:16,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-01-30 14:19:16,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-01-30 14:19:16,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 480 transitions, 9378 flow. Second operand has 9 states, 9 states have (on average 27.444444444444443) internal successors, (247), 9 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) [2024-01-30 14:19:16,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:16,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-01-30 14:19:16,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:17,400 INFO L124 PetriNetUnfolderBase]: 1906/3760 cut-off events. [2024-01-30 14:19:17,401 INFO L125 PetriNetUnfolderBase]: For 112535/112985 co-relation queries the response was YES. [2024-01-30 14:19:17,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27764 conditions, 3760 events. 1906/3760 cut-off events. For 112535/112985 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 27763 event pairs, 199 based on Foata normal form. 156/3794 useless extension candidates. Maximal degree in co-relation 27632. Up to 1136 conditions per place. [2024-01-30 14:19:17,455 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 283 selfloop transitions, 203 changer transitions 0/533 dead transitions. [2024-01-30 14:19:17,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 533 transitions, 10911 flow [2024-01-30 14:19:17,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-30 14:19:17,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-30 14:19:17,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 354 transitions. [2024-01-30 14:19:17,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5205882352941177 [2024-01-30 14:19:17,456 INFO L175 Difference]: Start difference. First operand has 380 places, 480 transitions, 9378 flow. Second operand 10 states and 354 transitions. [2024-01-30 14:19:17,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 533 transitions, 10911 flow [2024-01-30 14:19:17,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 533 transitions, 10732 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-01-30 14:19:17,863 INFO L231 Difference]: Finished difference. Result has 384 places, 488 transitions, 9761 flow [2024-01-30 14:19:17,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=9200, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=195, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9761, PETRI_PLACES=384, PETRI_TRANSITIONS=488} [2024-01-30 14:19:17,864 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 312 predicate places. [2024-01-30 14:19:17,864 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 488 transitions, 9761 flow [2024-01-30 14:19:17,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 27.444444444444443) internal successors, (247), 9 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) [2024-01-30 14:19:17,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:17,864 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] [2024-01-30 14:19:17,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-01-30 14:19:17,864 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:19:17,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:17,865 INFO L85 PathProgramCache]: Analyzing trace with hash -67529641, now seen corresponding path program 2 times [2024-01-30 14:19:17,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:17,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178457855] [2024-01-30 14:19:17,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:17,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:17,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:18,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:19:18,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:18,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178457855] [2024-01-30 14:19:18,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178457855] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:18,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:18,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:19:18,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73961408] [2024-01-30 14:19:18,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:18,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-30 14:19:18,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:18,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-30 14:19:18,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-01-30 14:19:18,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-01-30 14:19:18,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 488 transitions, 9761 flow. Second operand has 9 states, 9 states have (on average 27.444444444444443) internal successors, (247), 9 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) [2024-01-30 14:19:18,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:18,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-01-30 14:19:18,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:18,999 INFO L124 PetriNetUnfolderBase]: 1938/3824 cut-off events. [2024-01-30 14:19:18,999 INFO L125 PetriNetUnfolderBase]: For 116531/116981 co-relation queries the response was YES. [2024-01-30 14:19:19,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28800 conditions, 3824 events. 1938/3824 cut-off events. For 116531/116981 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 28297 event pairs, 199 based on Foata normal form. 144/3846 useless extension candidates. Maximal degree in co-relation 28666. Up to 1148 conditions per place. [2024-01-30 14:19:19,056 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 289 selfloop transitions, 208 changer transitions 0/544 dead transitions. [2024-01-30 14:19:19,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 544 transitions, 11335 flow [2024-01-30 14:19:19,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-30 14:19:19,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-30 14:19:19,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 418 transitions. [2024-01-30 14:19:19,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5122549019607843 [2024-01-30 14:19:19,058 INFO L175 Difference]: Start difference. First operand has 384 places, 488 transitions, 9761 flow. Second operand 12 states and 418 transitions. [2024-01-30 14:19:19,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 544 transitions, 11335 flow [2024-01-30 14:19:19,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 544 transitions, 10514 flow, removed 40 selfloop flow, removed 13 redundant places. [2024-01-30 14:19:19,496 INFO L231 Difference]: Finished difference. Result has 384 places, 491 transitions, 9440 flow [2024-01-30 14:19:19,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=8968, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=205, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9440, PETRI_PLACES=384, PETRI_TRANSITIONS=491} [2024-01-30 14:19:19,497 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 312 predicate places. [2024-01-30 14:19:19,497 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 491 transitions, 9440 flow [2024-01-30 14:19:19,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 27.444444444444443) internal successors, (247), 9 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) [2024-01-30 14:19:19,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:19,498 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] [2024-01-30 14:19:19,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-01-30 14:19:19,498 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:19:19,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:19,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1681139547, now seen corresponding path program 3 times [2024-01-30 14:19:19,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:19,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038411230] [2024-01-30 14:19:19,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:19,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:19,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:19,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:19:19,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:19,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038411230] [2024-01-30 14:19:19,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038411230] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:19,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:19,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-30 14:19:19,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359085092] [2024-01-30 14:19:19,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:19,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-30 14:19:19,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:19,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-30 14:19:19,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-01-30 14:19:19,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 68 [2024-01-30 14:19:19,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 491 transitions, 9440 flow. Second operand has 9 states, 9 states have (on average 27.444444444444443) internal successors, (247), 9 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) [2024-01-30 14:19:19,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:19,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 68 [2024-01-30 14:19:19,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:20,645 INFO L124 PetriNetUnfolderBase]: 1936/3818 cut-off events. [2024-01-30 14:19:20,646 INFO L125 PetriNetUnfolderBase]: For 112413/112855 co-relation queries the response was YES. [2024-01-30 14:19:20,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26891 conditions, 3818 events. 1936/3818 cut-off events. For 112413/112855 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 28178 event pairs, 192 based on Foata normal form. 114/3801 useless extension candidates. Maximal degree in co-relation 26761. Up to 1152 conditions per place. [2024-01-30 14:19:20,696 INFO L140 encePairwiseOnDemand]: 59/68 looper letters, 241 selfloop transitions, 243 changer transitions 0/531 dead transitions. [2024-01-30 14:19:20,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 531 transitions, 10708 flow [2024-01-30 14:19:20,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-30 14:19:20,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-30 14:19:20,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 377 transitions. [2024-01-30 14:19:20,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5040106951871658 [2024-01-30 14:19:20,697 INFO L175 Difference]: Start difference. First operand has 384 places, 491 transitions, 9440 flow. Second operand 11 states and 377 transitions. [2024-01-30 14:19:20,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 531 transitions, 10708 flow [2024-01-30 14:19:21,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 531 transitions, 9956 flow, removed 10 selfloop flow, removed 27 redundant places. [2024-01-30 14:19:21,059 INFO L231 Difference]: Finished difference. Result has 366 places, 491 transitions, 9134 flow [2024-01-30 14:19:21,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=8640, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=242, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9134, PETRI_PLACES=366, PETRI_TRANSITIONS=491} [2024-01-30 14:19:21,059 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 294 predicate places. [2024-01-30 14:19:21,060 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 491 transitions, 9134 flow [2024-01-30 14:19:21,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 27.444444444444443) internal successors, (247), 9 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) [2024-01-30 14:19:21,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:21,060 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] [2024-01-30 14:19:21,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-01-30 14:19:21,060 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:19:21,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:21,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1354363213, now seen corresponding path program 5 times [2024-01-30 14:19:21,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:21,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753977652] [2024-01-30 14:19:21,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:21,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:21,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:21,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:19:21,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:21,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753977652] [2024-01-30 14:19:21,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753977652] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:21,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:21,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-30 14:19:21,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411535940] [2024-01-30 14:19:21,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:21,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-30 14:19:21,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:21,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-30 14:19:21,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-01-30 14:19:21,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:19:21,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 491 transitions, 9134 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:21,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:21,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:19:21,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:22,548 INFO L124 PetriNetUnfolderBase]: 2830/5127 cut-off events. [2024-01-30 14:19:22,548 INFO L125 PetriNetUnfolderBase]: For 116279/117025 co-relation queries the response was YES. [2024-01-30 14:19:22,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33399 conditions, 5127 events. 2830/5127 cut-off events. For 116279/117025 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 36126 event pairs, 571 based on Foata normal form. 114/5073 useless extension candidates. Maximal degree in co-relation 33288. Up to 3901 conditions per place. [2024-01-30 14:19:22,608 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 463 selfloop transitions, 96 changer transitions 0/588 dead transitions. [2024-01-30 14:19:22,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 588 transitions, 11290 flow [2024-01-30 14:19:22,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-30 14:19:22,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-30 14:19:22,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 313 transitions. [2024-01-30 14:19:22,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38357843137254904 [2024-01-30 14:19:22,609 INFO L175 Difference]: Start difference. First operand has 366 places, 491 transitions, 9134 flow. Second operand 12 states and 313 transitions. [2024-01-30 14:19:22,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 588 transitions, 11290 flow [2024-01-30 14:19:22,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 588 transitions, 10702 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-01-30 14:19:23,006 INFO L231 Difference]: Finished difference. Result has 373 places, 520 transitions, 9374 flow [2024-01-30 14:19:23,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=8597, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9374, PETRI_PLACES=373, PETRI_TRANSITIONS=520} [2024-01-30 14:19:23,007 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 301 predicate places. [2024-01-30 14:19:23,007 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 520 transitions, 9374 flow [2024-01-30 14:19:23,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:23,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:23,007 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] [2024-01-30 14:19:23,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-01-30 14:19:23,008 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:19:23,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:23,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1609007441, now seen corresponding path program 9 times [2024-01-30 14:19:23,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:23,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592032888] [2024-01-30 14:19:23,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:23,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:23,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:23,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:19:23,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:23,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592032888] [2024-01-30 14:19:23,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592032888] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:23,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:23,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-30 14:19:23,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336537363] [2024-01-30 14:19:23,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:23,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-30 14:19:23,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:23,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-30 14:19:23,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-01-30 14:19:23,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:19:23,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 520 transitions, 9374 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:23,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:23,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:19:23,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:24,618 INFO L124 PetriNetUnfolderBase]: 2780/5111 cut-off events. [2024-01-30 14:19:24,618 INFO L125 PetriNetUnfolderBase]: For 105387/105599 co-relation queries the response was YES. [2024-01-30 14:19:24,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32079 conditions, 5111 events. 2780/5111 cut-off events. For 105387/105599 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 36313 event pairs, 409 based on Foata normal form. 54/5078 useless extension candidates. Maximal degree in co-relation 31964. Up to 1754 conditions per place. [2024-01-30 14:19:24,667 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 336 selfloop transitions, 225 changer transitions 0/582 dead transitions. [2024-01-30 14:19:24,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 582 transitions, 11029 flow [2024-01-30 14:19:24,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-30 14:19:24,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-30 14:19:24,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 315 transitions. [2024-01-30 14:19:24,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3860294117647059 [2024-01-30 14:19:24,669 INFO L175 Difference]: Start difference. First operand has 373 places, 520 transitions, 9374 flow. Second operand 12 states and 315 transitions. [2024-01-30 14:19:24,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 582 transitions, 11029 flow [2024-01-30 14:19:25,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 582 transitions, 10930 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-30 14:19:25,031 INFO L231 Difference]: Finished difference. Result has 381 places, 520 transitions, 9741 flow [2024-01-30 14:19:25,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=9275, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=225, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9741, PETRI_PLACES=381, PETRI_TRANSITIONS=520} [2024-01-30 14:19:25,032 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 309 predicate places. [2024-01-30 14:19:25,032 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 520 transitions, 9741 flow [2024-01-30 14:19:25,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:25,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:25,032 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] [2024-01-30 14:19:25,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-01-30 14:19:25,033 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:19:25,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:25,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1687205081, now seen corresponding path program 6 times [2024-01-30 14:19:25,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:25,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558498132] [2024-01-30 14:19:25,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:25,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:25,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:25,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:19:25,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:25,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558498132] [2024-01-30 14:19:25,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558498132] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:25,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:25,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-30 14:19:25,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108688545] [2024-01-30 14:19:25,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:25,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-30 14:19:25,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:25,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-30 14:19:25,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-01-30 14:19:25,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:19:25,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 520 transitions, 9741 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:25,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:25,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:19:25,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:26,464 INFO L124 PetriNetUnfolderBase]: 2802/5079 cut-off events. [2024-01-30 14:19:26,465 INFO L125 PetriNetUnfolderBase]: For 123836/124585 co-relation queries the response was YES. [2024-01-30 14:19:26,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33401 conditions, 5079 events. 2802/5079 cut-off events. For 123836/124585 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 35795 event pairs, 563 based on Foata normal form. 118/5029 useless extension candidates. Maximal degree in co-relation 33285. Up to 3875 conditions per place. [2024-01-30 14:19:26,526 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 452 selfloop transitions, 100 changer transitions 0/581 dead transitions. [2024-01-30 14:19:26,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 581 transitions, 11262 flow [2024-01-30 14:19:26,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-30 14:19:26,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-30 14:19:26,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 311 transitions. [2024-01-30 14:19:26,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38112745098039214 [2024-01-30 14:19:26,527 INFO L175 Difference]: Start difference. First operand has 381 places, 520 transitions, 9741 flow. Second operand 12 states and 311 transitions. [2024-01-30 14:19:26,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 581 transitions, 11262 flow [2024-01-30 14:19:26,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 581 transitions, 10815 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-01-30 14:19:26,992 INFO L231 Difference]: Finished difference. Result has 384 places, 522 transitions, 9572 flow [2024-01-30 14:19:26,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=9294, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9572, PETRI_PLACES=384, PETRI_TRANSITIONS=522} [2024-01-30 14:19:26,993 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 312 predicate places. [2024-01-30 14:19:26,993 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 522 transitions, 9572 flow [2024-01-30 14:19:26,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:26,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:26,994 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] [2024-01-30 14:19:26,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-01-30 14:19:26,994 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:19:26,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:26,994 INFO L85 PathProgramCache]: Analyzing trace with hash -554414349, now seen corresponding path program 7 times [2024-01-30 14:19:26,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:26,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254629968] [2024-01-30 14:19:26,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:26,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:27,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:27,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:19:27,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:27,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254629968] [2024-01-30 14:19:27,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254629968] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:27,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:27,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-30 14:19:27,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090361552] [2024-01-30 14:19:27,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:27,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-30 14:19:27,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:27,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-30 14:19:27,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-01-30 14:19:27,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:19:27,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 522 transitions, 9572 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:27,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:27,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:19:27,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:28,483 INFO L124 PetriNetUnfolderBase]: 2884/5261 cut-off events. [2024-01-30 14:19:28,484 INFO L125 PetriNetUnfolderBase]: For 117726/118456 co-relation queries the response was YES. [2024-01-30 14:19:28,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33437 conditions, 5261 events. 2884/5261 cut-off events. For 117726/118456 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 37465 event pairs, 453 based on Foata normal form. 112/5222 useless extension candidates. Maximal degree in co-relation 33318. Up to 2633 conditions per place. [2024-01-30 14:19:28,547 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 389 selfloop transitions, 184 changer transitions 0/602 dead transitions. [2024-01-30 14:19:28,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 602 transitions, 11361 flow [2024-01-30 14:19:28,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-30 14:19:28,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-30 14:19:28,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 317 transitions. [2024-01-30 14:19:28,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38848039215686275 [2024-01-30 14:19:28,549 INFO L175 Difference]: Start difference. First operand has 384 places, 522 transitions, 9572 flow. Second operand 12 states and 317 transitions. [2024-01-30 14:19:28,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 602 transitions, 11361 flow [2024-01-30 14:19:28,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 602 transitions, 11228 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-01-30 14:19:29,001 INFO L231 Difference]: Finished difference. Result has 390 places, 531 transitions, 9937 flow [2024-01-30 14:19:29,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=9439, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9937, PETRI_PLACES=390, PETRI_TRANSITIONS=531} [2024-01-30 14:19:29,002 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 318 predicate places. [2024-01-30 14:19:29,002 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 531 transitions, 9937 flow [2024-01-30 14:19:29,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:29,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:29,002 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] [2024-01-30 14:19:29,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-01-30 14:19:29,003 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:19:29,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:29,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1989832657, now seen corresponding path program 8 times [2024-01-30 14:19:29,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:29,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711087938] [2024-01-30 14:19:29,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:29,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:29,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:29,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:19:29,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:29,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711087938] [2024-01-30 14:19:29,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711087938] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:29,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:29,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-30 14:19:29,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400432790] [2024-01-30 14:19:29,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:29,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-30 14:19:29,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:29,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-30 14:19:29,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-01-30 14:19:29,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:19:29,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 531 transitions, 9937 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:29,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:29,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:19:29,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:30,570 INFO L124 PetriNetUnfolderBase]: 2922/5286 cut-off events. [2024-01-30 14:19:30,571 INFO L125 PetriNetUnfolderBase]: For 129428/130208 co-relation queries the response was YES. [2024-01-30 14:19:30,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34540 conditions, 5286 events. 2922/5286 cut-off events. For 129428/130208 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 37434 event pairs, 622 based on Foata normal form. 114/5233 useless extension candidates. Maximal degree in co-relation 34419. Up to 4099 conditions per place. [2024-01-30 14:19:30,645 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 471 selfloop transitions, 96 changer transitions 0/596 dead transitions. [2024-01-30 14:19:30,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 596 transitions, 11479 flow [2024-01-30 14:19:30,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-01-30 14:19:30,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-01-30 14:19:30,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 330 transitions. [2024-01-30 14:19:30,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3733031674208145 [2024-01-30 14:19:30,647 INFO L175 Difference]: Start difference. First operand has 390 places, 531 transitions, 9937 flow. Second operand 13 states and 330 transitions. [2024-01-30 14:19:30,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 596 transitions, 11479 flow [2024-01-30 14:19:31,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 596 transitions, 11237 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-01-30 14:19:31,159 INFO L231 Difference]: Finished difference. Result has 396 places, 531 transitions, 9901 flow [2024-01-30 14:19:31,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=9695, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=435, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=9901, PETRI_PLACES=396, PETRI_TRANSITIONS=531} [2024-01-30 14:19:31,159 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 324 predicate places. [2024-01-30 14:19:31,160 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 531 transitions, 9901 flow [2024-01-30 14:19:31,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:31,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:31,160 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] [2024-01-30 14:19:31,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-01-30 14:19:31,160 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:19:31,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:31,161 INFO L85 PathProgramCache]: Analyzing trace with hash -528469209, now seen corresponding path program 9 times [2024-01-30 14:19:31,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:31,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405944853] [2024-01-30 14:19:31,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:31,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:31,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:31,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:19:31,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:31,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405944853] [2024-01-30 14:19:31,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405944853] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:31,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:31,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-30 14:19:31,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458907259] [2024-01-30 14:19:31,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:31,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-30 14:19:31,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:31,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-30 14:19:31,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-01-30 14:19:31,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:19:31,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 531 transitions, 9901 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:31,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:31,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:19:31,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:32,620 INFO L124 PetriNetUnfolderBase]: 2860/5220 cut-off events. [2024-01-30 14:19:32,620 INFO L125 PetriNetUnfolderBase]: For 126128/126865 co-relation queries the response was YES. [2024-01-30 14:19:32,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33676 conditions, 5220 events. 2860/5220 cut-off events. For 126128/126865 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 37160 event pairs, 447 based on Foata normal form. 112/5182 useless extension candidates. Maximal degree in co-relation 33554. Up to 2625 conditions per place. [2024-01-30 14:19:32,692 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 395 selfloop transitions, 184 changer transitions 0/608 dead transitions. [2024-01-30 14:19:32,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 608 transitions, 11593 flow [2024-01-30 14:19:32,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-01-30 14:19:32,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-01-30 14:19:32,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 360 transitions. [2024-01-30 14:19:32,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37815126050420167 [2024-01-30 14:19:32,693 INFO L175 Difference]: Start difference. First operand has 396 places, 531 transitions, 9901 flow. Second operand 14 states and 360 transitions. [2024-01-30 14:19:32,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 608 transitions, 11593 flow [2024-01-30 14:19:33,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 608 transitions, 11341 flow, removed 7 selfloop flow, removed 11 redundant places. [2024-01-30 14:19:33,222 INFO L231 Difference]: Finished difference. Result has 399 places, 531 transitions, 10025 flow [2024-01-30 14:19:33,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=9649, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=10025, PETRI_PLACES=399, PETRI_TRANSITIONS=531} [2024-01-30 14:19:33,222 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 327 predicate places. [2024-01-30 14:19:33,222 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 531 transitions, 10025 flow [2024-01-30 14:19:33,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:33,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:33,223 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] [2024-01-30 14:19:33,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-01-30 14:19:33,223 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:19:33,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:33,224 INFO L85 PathProgramCache]: Analyzing trace with hash -363716761, now seen corresponding path program 10 times [2024-01-30 14:19:33,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:33,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148633196] [2024-01-30 14:19:33,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:33,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:33,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:33,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:19:33,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:33,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148633196] [2024-01-30 14:19:33,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148633196] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:33,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:33,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-30 14:19:33,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435351917] [2024-01-30 14:19:33,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:33,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-30 14:19:33,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:33,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-30 14:19:33,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-01-30 14:19:33,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:19:33,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 531 transitions, 10025 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:33,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:33,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:19:33,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:34,745 INFO L124 PetriNetUnfolderBase]: 2848/5200 cut-off events. [2024-01-30 14:19:34,746 INFO L125 PetriNetUnfolderBase]: For 127307/128044 co-relation queries the response was YES. [2024-01-30 14:19:34,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33855 conditions, 5200 events. 2848/5200 cut-off events. For 127307/128044 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 36956 event pairs, 426 based on Foata normal form. 100/5150 useless extension candidates. Maximal degree in co-relation 33732. Up to 2621 conditions per place. [2024-01-30 14:19:34,804 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 360 selfloop transitions, 207 changer transitions 0/596 dead transitions. [2024-01-30 14:19:34,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 596 transitions, 11553 flow [2024-01-30 14:19:34,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-01-30 14:19:34,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-01-30 14:19:34,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 330 transitions. [2024-01-30 14:19:34,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3733031674208145 [2024-01-30 14:19:34,806 INFO L175 Difference]: Start difference. First operand has 399 places, 531 transitions, 10025 flow. Second operand 13 states and 330 transitions. [2024-01-30 14:19:34,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 596 transitions, 11553 flow [2024-01-30 14:19:35,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 596 transitions, 11254 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-01-30 14:19:35,270 INFO L231 Difference]: Finished difference. Result has 404 places, 531 transitions, 10147 flow [2024-01-30 14:19:35,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=9726, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=207, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=10147, PETRI_PLACES=404, PETRI_TRANSITIONS=531} [2024-01-30 14:19:35,271 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 332 predicate places. [2024-01-30 14:19:35,271 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 531 transitions, 10147 flow [2024-01-30 14:19:35,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:35,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:35,271 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] [2024-01-30 14:19:35,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-01-30 14:19:35,272 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:19:35,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:35,272 INFO L85 PathProgramCache]: Analyzing trace with hash -252374889, now seen corresponding path program 5 times [2024-01-30 14:19:35,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:35,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603310879] [2024-01-30 14:19:35,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:35,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:35,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:35,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:19:35,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:35,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603310879] [2024-01-30 14:19:35,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603310879] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:35,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:35,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-30 14:19:35,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504119587] [2024-01-30 14:19:35,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:35,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-30 14:19:35,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:35,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-30 14:19:35,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-01-30 14:19:35,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:19:35,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 531 transitions, 10147 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:35,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:35,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:19:35,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:36,644 INFO L124 PetriNetUnfolderBase]: 2847/5224 cut-off events. [2024-01-30 14:19:36,645 INFO L125 PetriNetUnfolderBase]: For 131641/132359 co-relation queries the response was YES. [2024-01-30 14:19:36,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34218 conditions, 5224 events. 2847/5224 cut-off events. For 131641/132359 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 37413 event pairs, 547 based on Foata normal form. 106/5173 useless extension candidates. Maximal degree in co-relation 34094. Up to 3961 conditions per place. [2024-01-30 14:19:36,711 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 439 selfloop transitions, 89 changer transitions 0/557 dead transitions. [2024-01-30 14:19:36,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 557 transitions, 11390 flow [2024-01-30 14:19:36,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:19:36,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:19:36,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 186 transitions. [2024-01-30 14:19:36,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3907563025210084 [2024-01-30 14:19:36,712 INFO L175 Difference]: Start difference. First operand has 404 places, 531 transitions, 10147 flow. Second operand 7 states and 186 transitions. [2024-01-30 14:19:36,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 557 transitions, 11390 flow [2024-01-30 14:19:37,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 557 transitions, 11010 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-01-30 14:19:37,188 INFO L231 Difference]: Finished difference. Result has 402 places, 533 transitions, 9987 flow [2024-01-30 14:19:37,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=9771, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9987, PETRI_PLACES=402, PETRI_TRANSITIONS=533} [2024-01-30 14:19:37,189 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 330 predicate places. [2024-01-30 14:19:37,189 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 533 transitions, 9987 flow [2024-01-30 14:19:37,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:37,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:37,190 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] [2024-01-30 14:19:37,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-01-30 14:19:37,190 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:19:37,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:37,190 INFO L85 PathProgramCache]: Analyzing trace with hash -702588393, now seen corresponding path program 6 times [2024-01-30 14:19:37,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:37,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781498161] [2024-01-30 14:19:37,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:37,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:37,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:37,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:19:37,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:37,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781498161] [2024-01-30 14:19:37,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781498161] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:37,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:37,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-30 14:19:37,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682810299] [2024-01-30 14:19:37,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:37,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-30 14:19:37,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:37,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-30 14:19:37,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-01-30 14:19:37,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:19:37,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 533 transitions, 9987 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:37,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:37,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:19:37,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:38,630 INFO L124 PetriNetUnfolderBase]: 2861/5233 cut-off events. [2024-01-30 14:19:38,631 INFO L125 PetriNetUnfolderBase]: For 128823/129568 co-relation queries the response was YES. [2024-01-30 14:19:38,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33967 conditions, 5233 events. 2861/5233 cut-off events. For 128823/129568 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 37468 event pairs, 678 based on Foata normal form. 86/5152 useless extension candidates. Maximal degree in co-relation 33842. Up to 4461 conditions per place. [2024-01-30 14:19:38,705 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 445 selfloop transitions, 75 changer transitions 0/549 dead transitions. [2024-01-30 14:19:38,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 549 transitions, 11088 flow [2024-01-30 14:19:38,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:19:38,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:19:38,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-01-30 14:19:38,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37815126050420167 [2024-01-30 14:19:38,706 INFO L175 Difference]: Start difference. First operand has 402 places, 533 transitions, 9987 flow. Second operand 7 states and 180 transitions. [2024-01-30 14:19:38,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 549 transitions, 11088 flow [2024-01-30 14:19:39,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 549 transitions, 10957 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-01-30 14:19:39,234 INFO L231 Difference]: Finished difference. Result has 405 places, 533 transitions, 10032 flow [2024-01-30 14:19:39,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=9856, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=458, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10032, PETRI_PLACES=405, PETRI_TRANSITIONS=533} [2024-01-30 14:19:39,234 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 333 predicate places. [2024-01-30 14:19:39,235 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 533 transitions, 10032 flow [2024-01-30 14:19:39,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:39,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:39,235 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] [2024-01-30 14:19:39,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-01-30 14:19:39,235 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:19:39,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:39,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1170292713, now seen corresponding path program 7 times [2024-01-30 14:19:39,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:39,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518347707] [2024-01-30 14:19:39,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:39,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:39,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:39,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:19:39,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:39,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518347707] [2024-01-30 14:19:39,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518347707] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:39,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:39,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-30 14:19:39,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329046471] [2024-01-30 14:19:39,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:39,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-30 14:19:39,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:39,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-30 14:19:39,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-01-30 14:19:39,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:19:39,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 533 transitions, 10032 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:39,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:39,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:19:39,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:40,835 INFO L124 PetriNetUnfolderBase]: 2843/5207 cut-off events. [2024-01-30 14:19:40,835 INFO L125 PetriNetUnfolderBase]: For 128086/128807 co-relation queries the response was YES. [2024-01-30 14:19:40,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33731 conditions, 5207 events. 2843/5207 cut-off events. For 128086/128807 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 37241 event pairs, 560 based on Foata normal form. 82/5130 useless extension candidates. Maximal degree in co-relation 33606. Up to 3961 conditions per place. [2024-01-30 14:19:40,888 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 423 selfloop transitions, 101 changer transitions 0/553 dead transitions. [2024-01-30 14:19:40,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 553 transitions, 11179 flow [2024-01-30 14:19:40,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:19:40,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:19:40,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2024-01-30 14:19:40,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38235294117647056 [2024-01-30 14:19:40,889 INFO L175 Difference]: Start difference. First operand has 405 places, 533 transitions, 10032 flow. Second operand 7 states and 182 transitions. [2024-01-30 14:19:40,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 553 transitions, 11179 flow [2024-01-30 14:19:41,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 553 transitions, 11013 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-01-30 14:19:41,341 INFO L231 Difference]: Finished difference. Result has 405 places, 533 transitions, 10078 flow [2024-01-30 14:19:41,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=9866, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10078, PETRI_PLACES=405, PETRI_TRANSITIONS=533} [2024-01-30 14:19:41,341 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 333 predicate places. [2024-01-30 14:19:41,341 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 533 transitions, 10078 flow [2024-01-30 14:19:41,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:41,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:41,342 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] [2024-01-30 14:19:41,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-01-30 14:19:41,342 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:19:41,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:41,342 INFO L85 PathProgramCache]: Analyzing trace with hash 402355257, now seen corresponding path program 8 times [2024-01-30 14:19:41,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:41,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106541645] [2024-01-30 14:19:41,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:41,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:41,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:41,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:19:41,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:41,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106541645] [2024-01-30 14:19:41,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106541645] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:41,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:41,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-30 14:19:41,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694362390] [2024-01-30 14:19:41,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:41,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-30 14:19:41,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:41,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-30 14:19:41,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-01-30 14:19:41,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:19:41,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 533 transitions, 10078 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:41,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:41,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:19:41,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:42,758 INFO L124 PetriNetUnfolderBase]: 2920/5311 cut-off events. [2024-01-30 14:19:42,759 INFO L125 PetriNetUnfolderBase]: For 135896/136600 co-relation queries the response was YES. [2024-01-30 14:19:42,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34778 conditions, 5311 events. 2920/5311 cut-off events. For 135896/136600 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 37849 event pairs, 520 based on Foata normal form. 131/5263 useless extension candidates. Maximal degree in co-relation 34654. Up to 4041 conditions per place. [2024-01-30 14:19:42,831 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 418 selfloop transitions, 108 changer transitions 0/555 dead transitions. [2024-01-30 14:19:42,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 555 transitions, 11268 flow [2024-01-30 14:19:42,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:19:42,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:19:42,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 181 transitions. [2024-01-30 14:19:42,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3802521008403361 [2024-01-30 14:19:42,833 INFO L175 Difference]: Start difference. First operand has 405 places, 533 transitions, 10078 flow. Second operand 7 states and 181 transitions. [2024-01-30 14:19:42,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 555 transitions, 11268 flow [2024-01-30 14:19:43,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 555 transitions, 11023 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-01-30 14:19:43,339 INFO L231 Difference]: Finished difference. Result has 405 places, 538 transitions, 10168 flow [2024-01-30 14:19:43,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=9844, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10168, PETRI_PLACES=405, PETRI_TRANSITIONS=538} [2024-01-30 14:19:43,341 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 333 predicate places. [2024-01-30 14:19:43,341 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 538 transitions, 10168 flow [2024-01-30 14:19:43,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:43,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:43,341 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] [2024-01-30 14:19:43,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-01-30 14:19:43,341 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:19:43,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:43,342 INFO L85 PathProgramCache]: Analyzing trace with hash 432917847, now seen corresponding path program 9 times [2024-01-30 14:19:43,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:43,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532809603] [2024-01-30 14:19:43,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:43,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:43,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:43,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:19:43,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:43,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532809603] [2024-01-30 14:19:43,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532809603] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:43,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:43,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-30 14:19:43,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240732879] [2024-01-30 14:19:43,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:43,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-30 14:19:43,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:43,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-30 14:19:43,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-01-30 14:19:43,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:19:43,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 538 transitions, 10168 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:43,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:43,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:19:43,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:44,671 INFO L124 PetriNetUnfolderBase]: 2930/5341 cut-off events. [2024-01-30 14:19:44,671 INFO L125 PetriNetUnfolderBase]: For 135730/136437 co-relation queries the response was YES. [2024-01-30 14:19:44,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35182 conditions, 5341 events. 2930/5341 cut-off events. For 135730/136437 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 38242 event pairs, 522 based on Foata normal form. 131/5293 useless extension candidates. Maximal degree in co-relation 35058. Up to 4057 conditions per place. [2024-01-30 14:19:44,737 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 415 selfloop transitions, 115 changer transitions 0/559 dead transitions. [2024-01-30 14:19:44,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 559 transitions, 11359 flow [2024-01-30 14:19:44,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:19:44,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:19:44,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 181 transitions. [2024-01-30 14:19:44,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3802521008403361 [2024-01-30 14:19:44,738 INFO L175 Difference]: Start difference. First operand has 405 places, 538 transitions, 10168 flow. Second operand 7 states and 181 transitions. [2024-01-30 14:19:44,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 559 transitions, 11359 flow [2024-01-30 14:19:45,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 559 transitions, 11166 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-01-30 14:19:45,236 INFO L231 Difference]: Finished difference. Result has 407 places, 542 transitions, 10263 flow [2024-01-30 14:19:45,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=9994, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=538, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10263, PETRI_PLACES=407, PETRI_TRANSITIONS=542} [2024-01-30 14:19:45,237 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 335 predicate places. [2024-01-30 14:19:45,237 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 542 transitions, 10263 flow [2024-01-30 14:19:45,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:45,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:45,237 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] [2024-01-30 14:19:45,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-01-30 14:19:45,237 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:19:45,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:45,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1465175997, now seen corresponding path program 10 times [2024-01-30 14:19:45,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:45,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002926318] [2024-01-30 14:19:45,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:45,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:45,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:45,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:19:45,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:45,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002926318] [2024-01-30 14:19:45,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002926318] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:45,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:45,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-30 14:19:45,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417902235] [2024-01-30 14:19:45,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:45,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-30 14:19:45,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:45,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-30 14:19:45,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-01-30 14:19:45,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:19:45,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 542 transitions, 10263 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:45,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:45,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:19:45,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:46,825 INFO L124 PetriNetUnfolderBase]: 2934/5353 cut-off events. [2024-01-30 14:19:46,826 INFO L125 PetriNetUnfolderBase]: For 137625/138329 co-relation queries the response was YES. [2024-01-30 14:19:46,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35000 conditions, 5353 events. 2934/5353 cut-off events. For 137625/138329 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 38383 event pairs, 547 based on Foata normal form. 95/5269 useless extension candidates. Maximal degree in co-relation 34878. Up to 4069 conditions per place. [2024-01-30 14:19:46,896 INFO L140 encePairwiseOnDemand]: 60/68 looper letters, 403 selfloop transitions, 128 changer transitions 0/560 dead transitions. [2024-01-30 14:19:46,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 560 transitions, 11404 flow [2024-01-30 14:19:46,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-30 14:19:46,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-30 14:19:46,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-01-30 14:19:46,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3739495798319328 [2024-01-30 14:19:46,897 INFO L175 Difference]: Start difference. First operand has 407 places, 542 transitions, 10263 flow. Second operand 7 states and 178 transitions. [2024-01-30 14:19:46,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 560 transitions, 11404 flow [2024-01-30 14:19:47,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 560 transitions, 11115 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-01-30 14:19:47,506 INFO L231 Difference]: Finished difference. Result has 402 places, 545 transitions, 10314 flow [2024-01-30 14:19:47,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=9962, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10314, PETRI_PLACES=402, PETRI_TRANSITIONS=545} [2024-01-30 14:19:47,506 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 330 predicate places. [2024-01-30 14:19:47,506 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 545 transitions, 10314 flow [2024-01-30 14:19:47,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:47,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:47,507 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] [2024-01-30 14:19:47,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-01-30 14:19:47,507 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:19:47,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:47,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1902409735, now seen corresponding path program 11 times [2024-01-30 14:19:47,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:47,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198921713] [2024-01-30 14:19:47,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:47,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:47,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:47,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:19:47,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:47,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198921713] [2024-01-30 14:19:47,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198921713] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:47,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:47,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-30 14:19:47,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092134183] [2024-01-30 14:19:47,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:47,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-30 14:19:47,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:47,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-30 14:19:47,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-01-30 14:19:47,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:19:47,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 545 transitions, 10314 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:47,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:47,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:19:47,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:48,949 INFO L124 PetriNetUnfolderBase]: 2870/5286 cut-off events. [2024-01-30 14:19:48,949 INFO L125 PetriNetUnfolderBase]: For 131555/132310 co-relation queries the response was YES. [2024-01-30 14:19:48,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34035 conditions, 5286 events. 2870/5286 cut-off events. For 131555/132310 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 38087 event pairs, 456 based on Foata normal form. 104/5259 useless extension candidates. Maximal degree in co-relation 33920. Up to 2771 conditions per place. [2024-01-30 14:19:49,011 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 378 selfloop transitions, 191 changer transitions 0/598 dead transitions. [2024-01-30 14:19:49,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 598 transitions, 11880 flow [2024-01-30 14:19:49,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-30 14:19:49,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-30 14:19:49,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 268 transitions. [2024-01-30 14:19:49,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3941176470588235 [2024-01-30 14:19:49,012 INFO L175 Difference]: Start difference. First operand has 402 places, 545 transitions, 10314 flow. Second operand 10 states and 268 transitions. [2024-01-30 14:19:49,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 598 transitions, 11880 flow [2024-01-30 14:19:49,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 598 transitions, 11630 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-01-30 14:19:49,493 INFO L231 Difference]: Finished difference. Result has 407 places, 545 transitions, 10496 flow [2024-01-30 14:19:49,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=10068, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10496, PETRI_PLACES=407, PETRI_TRANSITIONS=545} [2024-01-30 14:19:49,493 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 335 predicate places. [2024-01-30 14:19:49,494 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 545 transitions, 10496 flow [2024-01-30 14:19:49,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:49,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:49,494 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] [2024-01-30 14:19:49,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-01-30 14:19:49,494 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:19:49,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:49,495 INFO L85 PathProgramCache]: Analyzing trace with hash 242812921, now seen corresponding path program 12 times [2024-01-30 14:19:49,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:49,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773454404] [2024-01-30 14:19:49,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:49,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:49,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:49,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:19:49,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:49,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773454404] [2024-01-30 14:19:49,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773454404] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:49,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:49,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-30 14:19:49,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268133514] [2024-01-30 14:19:49,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:49,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-30 14:19:49,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:49,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-30 14:19:49,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-01-30 14:19:49,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:19:49,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 545 transitions, 10496 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:49,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:49,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:19:49,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:50,982 INFO L124 PetriNetUnfolderBase]: 2858/5267 cut-off events. [2024-01-30 14:19:50,983 INFO L125 PetriNetUnfolderBase]: For 137571/138326 co-relation queries the response was YES. [2024-01-30 14:19:51,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34369 conditions, 5267 events. 2858/5267 cut-off events. For 137571/138326 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 37893 event pairs, 489 based on Foata normal form. 104/5239 useless extension candidates. Maximal degree in co-relation 34254. Up to 2767 conditions per place. [2024-01-30 14:19:51,053 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 379 selfloop transitions, 191 changer transitions 0/599 dead transitions. [2024-01-30 14:19:51,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 599 transitions, 12006 flow [2024-01-30 14:19:51,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-30 14:19:51,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-30 14:19:51,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 287 transitions. [2024-01-30 14:19:51,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3836898395721925 [2024-01-30 14:19:51,055 INFO L175 Difference]: Start difference. First operand has 407 places, 545 transitions, 10496 flow. Second operand 11 states and 287 transitions. [2024-01-30 14:19:51,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 599 transitions, 12006 flow [2024-01-30 14:19:51,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 599 transitions, 11588 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-01-30 14:19:51,562 INFO L231 Difference]: Finished difference. Result has 408 places, 545 transitions, 10506 flow [2024-01-30 14:19:51,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=10090, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10506, PETRI_PLACES=408, PETRI_TRANSITIONS=545} [2024-01-30 14:19:51,563 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 336 predicate places. [2024-01-30 14:19:51,563 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 545 transitions, 10506 flow [2024-01-30 14:19:51,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:51,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:51,564 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] [2024-01-30 14:19:51,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-01-30 14:19:51,564 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:19:51,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:51,564 INFO L85 PathProgramCache]: Analyzing trace with hash -576329159, now seen corresponding path program 13 times [2024-01-30 14:19:51,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:51,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93260044] [2024-01-30 14:19:51,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:51,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:51,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:51,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:19:51,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:51,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93260044] [2024-01-30 14:19:51,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93260044] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:51,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:51,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-30 14:19:51,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968591655] [2024-01-30 14:19:51,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:51,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-30 14:19:51,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:51,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-30 14:19:51,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-01-30 14:19:51,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:19:51,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 545 transitions, 10506 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:51,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:51,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:19:51,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:53,044 INFO L124 PetriNetUnfolderBase]: 2842/5239 cut-off events. [2024-01-30 14:19:53,044 INFO L125 PetriNetUnfolderBase]: For 136454/137209 co-relation queries the response was YES. [2024-01-30 14:19:53,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34011 conditions, 5239 events. 2842/5239 cut-off events. For 136454/137209 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 37707 event pairs, 449 based on Foata normal form. 108/5215 useless extension candidates. Maximal degree in co-relation 33896. Up to 2761 conditions per place. [2024-01-30 14:19:53,113 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 357 selfloop transitions, 203 changer transitions 0/589 dead transitions. [2024-01-30 14:19:53,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 589 transitions, 11840 flow [2024-01-30 14:19:53,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-30 14:19:53,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-30 14:19:53,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 264 transitions. [2024-01-30 14:19:53,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38823529411764707 [2024-01-30 14:19:53,114 INFO L175 Difference]: Start difference. First operand has 408 places, 545 transitions, 10506 flow. Second operand 10 states and 264 transitions. [2024-01-30 14:19:53,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 589 transitions, 11840 flow [2024-01-30 14:19:53,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 589 transitions, 11426 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-01-30 14:19:53,589 INFO L231 Difference]: Finished difference. Result has 406 places, 545 transitions, 10526 flow [2024-01-30 14:19:53,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=10092, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=203, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10526, PETRI_PLACES=406, PETRI_TRANSITIONS=545} [2024-01-30 14:19:53,589 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 334 predicate places. [2024-01-30 14:19:53,589 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 545 transitions, 10526 flow [2024-01-30 14:19:53,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:53,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:53,590 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] [2024-01-30 14:19:53,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-01-30 14:19:53,590 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:19:53,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:53,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1666276249, now seen corresponding path program 14 times [2024-01-30 14:19:53,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:53,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958486710] [2024-01-30 14:19:53,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:53,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:53,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:53,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:19:53,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:53,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958486710] [2024-01-30 14:19:53,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958486710] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:53,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:53,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-30 14:19:53,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268889098] [2024-01-30 14:19:53,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:53,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-30 14:19:53,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:53,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-30 14:19:53,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-01-30 14:19:53,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:19:53,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 545 transitions, 10526 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:53,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:53,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:19:53,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:55,046 INFO L124 PetriNetUnfolderBase]: 2970/5461 cut-off events. [2024-01-30 14:19:55,046 INFO L125 PetriNetUnfolderBase]: For 137400/138152 co-relation queries the response was YES. [2024-01-30 14:19:55,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35112 conditions, 5461 events. 2970/5461 cut-off events. For 137400/138152 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 39499 event pairs, 329 based on Foata normal form. 124/5452 useless extension candidates. Maximal degree in co-relation 34998. Up to 1687 conditions per place. [2024-01-30 14:19:55,117 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 331 selfloop transitions, 260 changer transitions 0/620 dead transitions. [2024-01-30 14:19:55,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 620 transitions, 12344 flow [2024-01-30 14:19:55,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-30 14:19:55,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-30 14:19:55,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 298 transitions. [2024-01-30 14:19:55,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3983957219251337 [2024-01-30 14:19:55,119 INFO L175 Difference]: Start difference. First operand has 406 places, 545 transitions, 10526 flow. Second operand 11 states and 298 transitions. [2024-01-30 14:19:55,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 620 transitions, 12344 flow [2024-01-30 14:19:55,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 620 transitions, 11898 flow, removed 12 selfloop flow, removed 11 redundant places. [2024-01-30 14:19:55,635 INFO L231 Difference]: Finished difference. Result has 407 places, 554 transitions, 10769 flow [2024-01-30 14:19:55,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=10096, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=251, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10769, PETRI_PLACES=407, PETRI_TRANSITIONS=554} [2024-01-30 14:19:55,635 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 335 predicate places. [2024-01-30 14:19:55,636 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 554 transitions, 10769 flow [2024-01-30 14:19:55,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:55,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:55,636 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] [2024-01-30 14:19:55,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-01-30 14:19:55,636 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:19:55,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:55,637 INFO L85 PathProgramCache]: Analyzing trace with hash -2036924321, now seen corresponding path program 15 times [2024-01-30 14:19:55,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:55,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636431165] [2024-01-30 14:19:55,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:55,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:55,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:55,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:19:55,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:55,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636431165] [2024-01-30 14:19:55,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636431165] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:55,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:55,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-30 14:19:55,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66546916] [2024-01-30 14:19:55,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:55,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-30 14:19:55,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:55,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-30 14:19:55,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-01-30 14:19:55,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:19:55,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 554 transitions, 10769 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:55,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:55,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:19:55,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:57,260 INFO L124 PetriNetUnfolderBase]: 3103/5657 cut-off events. [2024-01-30 14:19:57,260 INFO L125 PetriNetUnfolderBase]: For 146686/147462 co-relation queries the response was YES. [2024-01-30 14:19:57,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36867 conditions, 5657 events. 3103/5657 cut-off events. For 146686/147462 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 40745 event pairs, 280 based on Foata normal form. 159/5662 useless extension candidates. Maximal degree in co-relation 36753. Up to 1746 conditions per place. [2024-01-30 14:19:57,322 INFO L140 encePairwiseOnDemand]: 52/68 looper letters, 315 selfloop transitions, 295 changer transitions 0/639 dead transitions. [2024-01-30 14:19:57,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 639 transitions, 12873 flow [2024-01-30 14:19:57,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-30 14:19:57,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-30 14:19:57,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 316 transitions. [2024-01-30 14:19:57,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3872549019607843 [2024-01-30 14:19:57,323 INFO L175 Difference]: Start difference. First operand has 407 places, 554 transitions, 10769 flow. Second operand 12 states and 316 transitions. [2024-01-30 14:19:57,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 639 transitions, 12873 flow [2024-01-30 14:19:57,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 639 transitions, 12422 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-01-30 14:19:57,791 INFO L231 Difference]: Finished difference. Result has 413 places, 577 transitions, 11351 flow [2024-01-30 14:19:57,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=10348, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=554, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=272, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11351, PETRI_PLACES=413, PETRI_TRANSITIONS=577} [2024-01-30 14:19:57,792 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 341 predicate places. [2024-01-30 14:19:57,792 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 577 transitions, 11351 flow [2024-01-30 14:19:57,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:57,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:19:57,792 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] [2024-01-30 14:19:57,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-01-30 14:19:57,792 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:19:57,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:19:57,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1265631051, now seen corresponding path program 16 times [2024-01-30 14:19:57,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:19:57,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77022512] [2024-01-30 14:19:57,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:19:57,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:19:57,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:19:58,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:19:58,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:19:58,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77022512] [2024-01-30 14:19:58,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77022512] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:19:58,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:19:58,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-30 14:19:58,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152545695] [2024-01-30 14:19:58,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:19:58,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-30 14:19:58,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:19:58,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-30 14:19:58,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-01-30 14:19:58,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:19:58,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 577 transitions, 11351 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:19:58,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:19:58,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:19:58,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:19:59,433 INFO L124 PetriNetUnfolderBase]: 3030/5577 cut-off events. [2024-01-30 14:19:59,433 INFO L125 PetriNetUnfolderBase]: For 145701/146522 co-relation queries the response was YES. [2024-01-30 14:19:59,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37526 conditions, 5577 events. 3030/5577 cut-off events. For 145701/146522 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 40572 event pairs, 349 based on Foata normal form. 124/5568 useless extension candidates. Maximal degree in co-relation 37410. Up to 1715 conditions per place. [2024-01-30 14:19:59,513 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 344 selfloop transitions, 275 changer transitions 0/648 dead transitions. [2024-01-30 14:19:59,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 648 transitions, 13175 flow [2024-01-30 14:19:59,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-01-30 14:19:59,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-01-30 14:19:59,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 343 transitions. [2024-01-30 14:19:59,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38800904977375567 [2024-01-30 14:19:59,514 INFO L175 Difference]: Start difference. First operand has 413 places, 577 transitions, 11351 flow. Second operand 13 states and 343 transitions. [2024-01-30 14:19:59,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 648 transitions, 13175 flow [2024-01-30 14:20:00,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 648 transitions, 12654 flow, removed 16 selfloop flow, removed 11 redundant places. [2024-01-30 14:20:00,091 INFO L231 Difference]: Finished difference. Result has 415 places, 577 transitions, 11408 flow [2024-01-30 14:20:00,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=10846, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=577, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=275, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=11408, PETRI_PLACES=415, PETRI_TRANSITIONS=577} [2024-01-30 14:20:00,092 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 343 predicate places. [2024-01-30 14:20:00,092 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 577 transitions, 11408 flow [2024-01-30 14:20:00,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:00,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:20:00,092 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] [2024-01-30 14:20:00,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-01-30 14:20:00,092 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:20:00,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:20:00,093 INFO L85 PathProgramCache]: Analyzing trace with hash -2010229601, now seen corresponding path program 17 times [2024-01-30 14:20:00,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:20:00,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842649802] [2024-01-30 14:20:00,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:20:00,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:20:00,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:20:00,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:20:00,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:20:00,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842649802] [2024-01-30 14:20:00,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842649802] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:20:00,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:20:00,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-30 14:20:00,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246293847] [2024-01-30 14:20:00,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:20:00,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-30 14:20:00,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:20:00,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-30 14:20:00,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-01-30 14:20:00,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:20:00,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 577 transitions, 11408 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:00,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:20:00,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:20:00,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:20:01,663 INFO L124 PetriNetUnfolderBase]: 3076/5615 cut-off events. [2024-01-30 14:20:01,663 INFO L125 PetriNetUnfolderBase]: For 154622/155426 co-relation queries the response was YES. [2024-01-30 14:20:01,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38101 conditions, 5615 events. 3076/5615 cut-off events. For 154622/155426 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 40521 event pairs, 280 based on Foata normal form. 159/5622 useless extension candidates. Maximal degree in co-relation 37985. Up to 1735 conditions per place. [2024-01-30 14:20:01,729 INFO L140 encePairwiseOnDemand]: 52/68 looper letters, 323 selfloop transitions, 295 changer transitions 0/647 dead transitions. [2024-01-30 14:20:01,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 647 transitions, 13240 flow [2024-01-30 14:20:01,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-01-30 14:20:01,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-01-30 14:20:01,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 361 transitions. [2024-01-30 14:20:01,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3792016806722689 [2024-01-30 14:20:01,730 INFO L175 Difference]: Start difference. First operand has 415 places, 577 transitions, 11408 flow. Second operand 14 states and 361 transitions. [2024-01-30 14:20:01,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 647 transitions, 13240 flow [2024-01-30 14:20:02,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 647 transitions, 12714 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-01-30 14:20:02,216 INFO L231 Difference]: Finished difference. Result has 420 places, 577 transitions, 11492 flow [2024-01-30 14:20:02,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=10886, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=577, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=295, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=11492, PETRI_PLACES=420, PETRI_TRANSITIONS=577} [2024-01-30 14:20:02,222 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 348 predicate places. [2024-01-30 14:20:02,223 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 577 transitions, 11492 flow [2024-01-30 14:20:02,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:02,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:20:02,223 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] [2024-01-30 14:20:02,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-01-30 14:20:02,223 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:20:02,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:20:02,223 INFO L85 PathProgramCache]: Analyzing trace with hash -637566049, now seen corresponding path program 18 times [2024-01-30 14:20:02,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:20:02,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288770495] [2024-01-30 14:20:02,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:20:02,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:20:02,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:20:02,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:20:02,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:20:02,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288770495] [2024-01-30 14:20:02,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288770495] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:20:02,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:20:02,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-30 14:20:02,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675209751] [2024-01-30 14:20:02,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:20:02,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-30 14:20:02,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:20:02,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-30 14:20:02,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-01-30 14:20:02,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:20:02,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 577 transitions, 11492 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:02,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:20:02,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:20:02,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:20:03,786 INFO L124 PetriNetUnfolderBase]: 3006/5536 cut-off events. [2024-01-30 14:20:03,786 INFO L125 PetriNetUnfolderBase]: For 147824/148649 co-relation queries the response was YES. [2024-01-30 14:20:03,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37426 conditions, 5536 events. 3006/5536 cut-off events. For 147824/148649 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 40232 event pairs, 308 based on Foata normal form. 100/5504 useless extension candidates. Maximal degree in co-relation 37310. Up to 1707 conditions per place. [2024-01-30 14:20:03,842 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 298 selfloop transitions, 309 changer transitions 0/636 dead transitions. [2024-01-30 14:20:03,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 636 transitions, 13143 flow [2024-01-30 14:20:03,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-30 14:20:03,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-30 14:20:03,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 313 transitions. [2024-01-30 14:20:03,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38357843137254904 [2024-01-30 14:20:03,844 INFO L175 Difference]: Start difference. First operand has 420 places, 577 transitions, 11492 flow. Second operand 12 states and 313 transitions. [2024-01-30 14:20:03,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 636 transitions, 13143 flow [2024-01-30 14:20:04,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 636 transitions, 12531 flow, removed 6 selfloop flow, removed 14 redundant places. [2024-01-30 14:20:04,261 INFO L231 Difference]: Finished difference. Result has 418 places, 577 transitions, 11514 flow [2024-01-30 14:20:04,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=10886, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=577, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=309, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11514, PETRI_PLACES=418, PETRI_TRANSITIONS=577} [2024-01-30 14:20:04,267 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 346 predicate places. [2024-01-30 14:20:04,267 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 577 transitions, 11514 flow [2024-01-30 14:20:04,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:04,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:20:04,268 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] [2024-01-30 14:20:04,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-01-30 14:20:04,268 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:20:04,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:20:04,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1845477153, now seen corresponding path program 19 times [2024-01-30 14:20:04,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:20:04,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244887609] [2024-01-30 14:20:04,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:20:04,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:20:04,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:20:04,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:20:04,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:20:04,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244887609] [2024-01-30 14:20:04,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244887609] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:20:04,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:20:04,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-30 14:20:04,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459223909] [2024-01-30 14:20:04,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:20:04,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-30 14:20:04,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:20:04,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-30 14:20:04,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-01-30 14:20:04,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:20:04,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 577 transitions, 11514 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:04,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:20:04,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:20:04,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:20:05,902 INFO L124 PetriNetUnfolderBase]: 3255/5956 cut-off events. [2024-01-30 14:20:05,902 INFO L125 PetriNetUnfolderBase]: For 164321/165125 co-relation queries the response was YES. [2024-01-30 14:20:05,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40098 conditions, 5956 events. 3255/5956 cut-off events. For 164321/165125 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 43377 event pairs, 261 based on Foata normal form. 159/5967 useless extension candidates. Maximal degree in co-relation 39982. Up to 1806 conditions per place. [2024-01-30 14:20:05,973 INFO L140 encePairwiseOnDemand]: 52/68 looper letters, 290 selfloop transitions, 342 changer transitions 0/661 dead transitions. [2024-01-30 14:20:05,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 661 transitions, 13768 flow [2024-01-30 14:20:05,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-01-30 14:20:05,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-01-30 14:20:05,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 335 transitions. [2024-01-30 14:20:05,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37895927601809953 [2024-01-30 14:20:05,974 INFO L175 Difference]: Start difference. First operand has 418 places, 577 transitions, 11514 flow. Second operand 13 states and 335 transitions. [2024-01-30 14:20:05,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 661 transitions, 13768 flow [2024-01-30 14:20:06,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 661 transitions, 13321 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-01-30 14:20:06,454 INFO L231 Difference]: Finished difference. Result has 424 places, 605 transitions, 12490 flow [2024-01-30 14:20:06,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=11087, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=577, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=314, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=12490, PETRI_PLACES=424, PETRI_TRANSITIONS=605} [2024-01-30 14:20:06,455 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 352 predicate places. [2024-01-30 14:20:06,455 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 605 transitions, 12490 flow [2024-01-30 14:20:06,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:06,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:20:06,456 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] [2024-01-30 14:20:06,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-01-30 14:20:06,456 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:20:06,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:20:06,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1982840379, now seen corresponding path program 20 times [2024-01-30 14:20:06,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:20:06,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688204396] [2024-01-30 14:20:06,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:20:06,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:20:06,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:20:06,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:20:06,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:20:06,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688204396] [2024-01-30 14:20:06,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688204396] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:20:06,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:20:06,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-01-30 14:20:06,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126539675] [2024-01-30 14:20:06,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:20:06,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-30 14:20:06,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:20:06,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-30 14:20:06,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-01-30 14:20:06,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:20:06,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 605 transitions, 12490 flow. Second operand has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:06,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:20:06,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:20:06,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:20:08,044 INFO L124 PetriNetUnfolderBase]: 3387/6146 cut-off events. [2024-01-30 14:20:08,045 INFO L125 PetriNetUnfolderBase]: For 177805/178609 co-relation queries the response was YES. [2024-01-30 14:20:08,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42223 conditions, 6146 events. 3387/6146 cut-off events. For 177805/178609 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 44719 event pairs, 279 based on Foata normal form. 123/6115 useless extension candidates. Maximal degree in co-relation 42106. Up to 1850 conditions per place. [2024-01-30 14:20:08,115 INFO L140 encePairwiseOnDemand]: 52/68 looper letters, 285 selfloop transitions, 355 changer transitions 0/669 dead transitions. [2024-01-30 14:20:08,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 669 transitions, 14288 flow [2024-01-30 14:20:08,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-01-30 14:20:08,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-01-30 14:20:08,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 329 transitions. [2024-01-30 14:20:08,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721719457013575 [2024-01-30 14:20:08,116 INFO L175 Difference]: Start difference. First operand has 424 places, 605 transitions, 12490 flow. Second operand 13 states and 329 transitions. [2024-01-30 14:20:08,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 669 transitions, 14288 flow [2024-01-30 14:20:08,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 669 transitions, 13875 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-01-30 14:20:08,645 INFO L231 Difference]: Finished difference. Result has 432 places, 619 transitions, 13093 flow [2024-01-30 14:20:08,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=12087, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=605, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=341, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=13093, PETRI_PLACES=432, PETRI_TRANSITIONS=619} [2024-01-30 14:20:08,646 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 360 predicate places. [2024-01-30 14:20:08,646 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 619 transitions, 13093 flow [2024-01-30 14:20:08,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 17.6) internal successors, (176), 10 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:08,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:20:08,646 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] [2024-01-30 14:20:08,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-01-30 14:20:08,646 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:20:08,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:20:08,647 INFO L85 PathProgramCache]: Analyzing trace with hash 505358554, now seen corresponding path program 1 times [2024-01-30 14:20:08,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:20:08,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858364975] [2024-01-30 14:20:08,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:20:08,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:20:08,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:20:08,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:20:08,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:20:08,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858364975] [2024-01-30 14:20:08,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858364975] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:20:08,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:20:08,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-30 14:20:08,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715121774] [2024-01-30 14:20:08,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:20:08,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-30 14:20:08,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:20:08,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-30 14:20:08,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-01-30 14:20:08,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:20:08,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 619 transitions, 13093 flow. Second operand has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:08,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:20:08,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:20:08,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:20:10,453 INFO L124 PetriNetUnfolderBase]: 3352/6348 cut-off events. [2024-01-30 14:20:10,453 INFO L125 PetriNetUnfolderBase]: For 192168/192764 co-relation queries the response was YES. [2024-01-30 14:20:10,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45002 conditions, 6348 events. 3352/6348 cut-off events. For 192168/192764 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 48547 event pairs, 594 based on Foata normal form. 65/6252 useless extension candidates. Maximal degree in co-relation 44883. Up to 1941 conditions per place. [2024-01-30 14:20:10,523 INFO L140 encePairwiseOnDemand]: 56/68 looper letters, 498 selfloop transitions, 140 changer transitions 17/684 dead transitions. [2024-01-30 14:20:10,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 684 transitions, 15143 flow [2024-01-30 14:20:10,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-30 14:20:10,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-30 14:20:10,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 275 transitions. [2024-01-30 14:20:10,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40441176470588236 [2024-01-30 14:20:10,524 INFO L175 Difference]: Start difference. First operand has 432 places, 619 transitions, 13093 flow. Second operand 10 states and 275 transitions. [2024-01-30 14:20:10,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 684 transitions, 15143 flow [2024-01-30 14:20:11,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 684 transitions, 14373 flow, removed 43 selfloop flow, removed 12 redundant places. [2024-01-30 14:20:11,159 INFO L231 Difference]: Finished difference. Result has 432 places, 604 transitions, 12495 flow [2024-01-30 14:20:11,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=12375, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=619, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=479, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12495, PETRI_PLACES=432, PETRI_TRANSITIONS=604} [2024-01-30 14:20:11,159 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 360 predicate places. [2024-01-30 14:20:11,159 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 604 transitions, 12495 flow [2024-01-30 14:20:11,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:11,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:20:11,160 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] [2024-01-30 14:20:11,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-01-30 14:20:11,160 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:20:11,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:20:11,160 INFO L85 PathProgramCache]: Analyzing trace with hash 2051730350, now seen corresponding path program 1 times [2024-01-30 14:20:11,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:20:11,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028777973] [2024-01-30 14:20:11,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:20:11,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:20:11,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:20:11,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:20:11,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:20:11,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028777973] [2024-01-30 14:20:11,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028777973] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:20:11,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:20:11,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-30 14:20:11,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512713715] [2024-01-30 14:20:11,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:20:11,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-30 14:20:11,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:20:11,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-30 14:20:11,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-01-30 14:20:11,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:20:11,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 604 transitions, 12495 flow. Second operand has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:11,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:20:11,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:20:11,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:20:13,133 INFO L124 PetriNetUnfolderBase]: 3423/6552 cut-off events. [2024-01-30 14:20:13,134 INFO L125 PetriNetUnfolderBase]: For 186895/187768 co-relation queries the response was YES. [2024-01-30 14:20:13,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44625 conditions, 6552 events. 3423/6552 cut-off events. For 186895/187768 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 51074 event pairs, 756 based on Foata normal form. 118/6531 useless extension candidates. Maximal degree in co-relation 44505. Up to 2609 conditions per place. [2024-01-30 14:20:13,200 INFO L140 encePairwiseOnDemand]: 55/68 looper letters, 560 selfloop transitions, 114 changer transitions 4/707 dead transitions. [2024-01-30 14:20:13,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 707 transitions, 14926 flow [2024-01-30 14:20:13,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-30 14:20:13,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-30 14:20:13,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 303 transitions. [2024-01-30 14:20:13,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4050802139037433 [2024-01-30 14:20:13,202 INFO L175 Difference]: Start difference. First operand has 432 places, 604 transitions, 12495 flow. Second operand 11 states and 303 transitions. [2024-01-30 14:20:13,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 707 transitions, 14926 flow [2024-01-30 14:20:13,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 707 transitions, 14643 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-01-30 14:20:13,824 INFO L231 Difference]: Finished difference. Result has 437 places, 606 transitions, 12514 flow [2024-01-30 14:20:13,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=12223, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=604, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=490, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12514, PETRI_PLACES=437, PETRI_TRANSITIONS=606} [2024-01-30 14:20:13,825 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 365 predicate places. [2024-01-30 14:20:13,825 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 606 transitions, 12514 flow [2024-01-30 14:20:13,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:13,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:20:13,825 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, 1, 1] [2024-01-30 14:20:13,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-01-30 14:20:13,826 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:20:13,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:20:13,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1534229178, now seen corresponding path program 2 times [2024-01-30 14:20:13,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:20:13,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649545073] [2024-01-30 14:20:13,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:20:13,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:20:13,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:20:14,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:20:14,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:20:14,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649545073] [2024-01-30 14:20:14,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649545073] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:20:14,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:20:14,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-30 14:20:14,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368091401] [2024-01-30 14:20:14,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:20:14,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-30 14:20:14,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:20:14,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-30 14:20:14,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-01-30 14:20:14,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:20:14,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 606 transitions, 12514 flow. Second operand has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:14,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:20:14,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:20:14,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:20:15,671 INFO L124 PetriNetUnfolderBase]: 3459/6807 cut-off events. [2024-01-30 14:20:15,672 INFO L125 PetriNetUnfolderBase]: For 199565/200243 co-relation queries the response was YES. [2024-01-30 14:20:15,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47170 conditions, 6807 events. 3459/6807 cut-off events. For 199565/200243 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 54442 event pairs, 548 based on Foata normal form. 82/6719 useless extension candidates. Maximal degree in co-relation 47048. Up to 2814 conditions per place. [2024-01-30 14:20:15,879 INFO L140 encePairwiseOnDemand]: 51/68 looper letters, 489 selfloop transitions, 158 changer transitions 4/680 dead transitions. [2024-01-30 14:20:15,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 680 transitions, 14633 flow [2024-01-30 14:20:15,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-30 14:20:15,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-30 14:20:15,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 309 transitions. [2024-01-30 14:20:15,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41310160427807485 [2024-01-30 14:20:15,880 INFO L175 Difference]: Start difference. First operand has 437 places, 606 transitions, 12514 flow. Second operand 11 states and 309 transitions. [2024-01-30 14:20:15,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 680 transitions, 14633 flow [2024-01-30 14:20:16,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 680 transitions, 14467 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-01-30 14:20:16,542 INFO L231 Difference]: Finished difference. Result has 443 places, 605 transitions, 12728 flow [2024-01-30 14:20:16,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=12348, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=606, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12728, PETRI_PLACES=443, PETRI_TRANSITIONS=605} [2024-01-30 14:20:16,543 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 371 predicate places. [2024-01-30 14:20:16,543 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 605 transitions, 12728 flow [2024-01-30 14:20:16,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:16,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:20:16,543 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] [2024-01-30 14:20:16,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-01-30 14:20:16,543 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:20:16,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:20:16,544 INFO L85 PathProgramCache]: Analyzing trace with hash 2096862284, now seen corresponding path program 3 times [2024-01-30 14:20:16,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:20:16,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792911438] [2024-01-30 14:20:16,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:20:16,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:20:16,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:20:16,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:20:16,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:20:16,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792911438] [2024-01-30 14:20:16,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792911438] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:20:16,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:20:16,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-30 14:20:16,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85224804] [2024-01-30 14:20:16,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:20:16,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-30 14:20:16,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:20:16,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-30 14:20:16,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-01-30 14:20:16,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:20:16,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 605 transitions, 12728 flow. Second operand has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:16,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:20:16,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:20:16,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:20:18,582 INFO L124 PetriNetUnfolderBase]: 3454/6824 cut-off events. [2024-01-30 14:20:18,582 INFO L125 PetriNetUnfolderBase]: For 205438/206152 co-relation queries the response was YES. [2024-01-30 14:20:18,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48587 conditions, 6824 events. 3454/6824 cut-off events. For 205438/206152 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 54709 event pairs, 557 based on Foata normal form. 80/6743 useless extension candidates. Maximal degree in co-relation 48462. Up to 2814 conditions per place. [2024-01-30 14:20:18,669 INFO L140 encePairwiseOnDemand]: 53/68 looper letters, 495 selfloop transitions, 156 changer transitions 7/687 dead transitions. [2024-01-30 14:20:18,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 687 transitions, 14929 flow [2024-01-30 14:20:18,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-01-30 14:20:18,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-01-30 14:20:18,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 355 transitions. [2024-01-30 14:20:18,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40158371040723984 [2024-01-30 14:20:18,671 INFO L175 Difference]: Start difference. First operand has 443 places, 605 transitions, 12728 flow. Second operand 13 states and 355 transitions. [2024-01-30 14:20:18,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 687 transitions, 14929 flow [2024-01-30 14:20:19,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 687 transitions, 14692 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-01-30 14:20:19,586 INFO L231 Difference]: Finished difference. Result has 448 places, 598 transitions, 12748 flow [2024-01-30 14:20:19,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=12499, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=605, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=12748, PETRI_PLACES=448, PETRI_TRANSITIONS=598} [2024-01-30 14:20:19,586 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 376 predicate places. [2024-01-30 14:20:19,586 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 598 transitions, 12748 flow [2024-01-30 14:20:19,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:19,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:20:19,587 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] [2024-01-30 14:20:19,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-01-30 14:20:19,587 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:20:19,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:20:19,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1899064420, now seen corresponding path program 4 times [2024-01-30 14:20:19,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:20:19,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989075343] [2024-01-30 14:20:19,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:20:19,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:20:19,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:20:19,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:20:19,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:20:19,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989075343] [2024-01-30 14:20:19,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989075343] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:20:19,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:20:19,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-30 14:20:19,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116675786] [2024-01-30 14:20:19,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:20:19,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-30 14:20:19,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:20:19,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-30 14:20:19,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-01-30 14:20:19,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:20:19,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 598 transitions, 12748 flow. Second operand has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:19,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:20:19,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:20:19,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:20:21,628 INFO L124 PetriNetUnfolderBase]: 3472/6959 cut-off events. [2024-01-30 14:20:21,629 INFO L125 PetriNetUnfolderBase]: For 211275/211971 co-relation queries the response was YES. [2024-01-30 14:20:21,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49886 conditions, 6959 events. 3472/6959 cut-off events. For 211275/211971 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 56607 event pairs, 565 based on Foata normal form. 74/6869 useless extension candidates. Maximal degree in co-relation 49761. Up to 2096 conditions per place. [2024-01-30 14:20:21,717 INFO L140 encePairwiseOnDemand]: 53/68 looper letters, 433 selfloop transitions, 200 changer transitions 8/670 dead transitions. [2024-01-30 14:20:21,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 670 transitions, 14826 flow [2024-01-30 14:20:21,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-30 14:20:21,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-30 14:20:21,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 329 transitions. [2024-01-30 14:20:21,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40318627450980393 [2024-01-30 14:20:21,718 INFO L175 Difference]: Start difference. First operand has 448 places, 598 transitions, 12748 flow. Second operand 12 states and 329 transitions. [2024-01-30 14:20:21,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 670 transitions, 14826 flow [2024-01-30 14:20:22,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 670 transitions, 14536 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-01-30 14:20:22,560 INFO L231 Difference]: Finished difference. Result has 449 places, 591 transitions, 12871 flow [2024-01-30 14:20:22,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=12466, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=598, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=200, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12871, PETRI_PLACES=449, PETRI_TRANSITIONS=591} [2024-01-30 14:20:22,561 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 377 predicate places. [2024-01-30 14:20:22,561 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 591 transitions, 12871 flow [2024-01-30 14:20:22,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:22,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:20:22,561 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] [2024-01-30 14:20:22,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-01-30 14:20:22,562 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:20:22,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:20:22,562 INFO L85 PathProgramCache]: Analyzing trace with hash -460776508, now seen corresponding path program 5 times [2024-01-30 14:20:22,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:20:22,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002863787] [2024-01-30 14:20:22,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:20:22,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:20:22,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:20:22,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:20:22,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:20:22,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002863787] [2024-01-30 14:20:22,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002863787] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:20:22,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:20:22,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-30 14:20:22,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171133652] [2024-01-30 14:20:22,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:20:22,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-30 14:20:22,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:20:22,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-30 14:20:22,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-01-30 14:20:22,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:20:22,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 591 transitions, 12871 flow. Second operand has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:22,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:20:22,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:20:22,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:20:24,525 INFO L124 PetriNetUnfolderBase]: 3474/6962 cut-off events. [2024-01-30 14:20:24,526 INFO L125 PetriNetUnfolderBase]: For 215122/215818 co-relation queries the response was YES. [2024-01-30 14:20:24,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50928 conditions, 6962 events. 3474/6962 cut-off events. For 215122/215818 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 56565 event pairs, 552 based on Foata normal form. 74/6866 useless extension candidates. Maximal degree in co-relation 50803. Up to 2237 conditions per place. [2024-01-30 14:20:24,619 INFO L140 encePairwiseOnDemand]: 53/68 looper letters, 416 selfloop transitions, 202 changer transitions 13/660 dead transitions. [2024-01-30 14:20:24,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 660 transitions, 14844 flow [2024-01-30 14:20:24,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-30 14:20:24,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-30 14:20:24,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 322 transitions. [2024-01-30 14:20:24,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3946078431372549 [2024-01-30 14:20:24,620 INFO L175 Difference]: Start difference. First operand has 449 places, 591 transitions, 12871 flow. Second operand 12 states and 322 transitions. [2024-01-30 14:20:24,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 660 transitions, 14844 flow [2024-01-30 14:20:25,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 660 transitions, 14502 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-01-30 14:20:25,475 INFO L231 Difference]: Finished difference. Result has 451 places, 583 transitions, 12878 flow [2024-01-30 14:20:25,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=12531, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=591, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12878, PETRI_PLACES=451, PETRI_TRANSITIONS=583} [2024-01-30 14:20:25,476 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 379 predicate places. [2024-01-30 14:20:25,476 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 583 transitions, 12878 flow [2024-01-30 14:20:25,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:25,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:20:25,477 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] [2024-01-30 14:20:25,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-01-30 14:20:25,477 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:20:25,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:20:25,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1001992778, now seen corresponding path program 2 times [2024-01-30 14:20:25,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:20:25,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525069778] [2024-01-30 14:20:25,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:20:25,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:20:25,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:20:25,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:20:25,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:20:25,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525069778] [2024-01-30 14:20:25,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525069778] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:20:25,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:20:25,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-30 14:20:25,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819633510] [2024-01-30 14:20:25,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:20:25,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-30 14:20:25,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:20:25,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-30 14:20:25,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-01-30 14:20:25,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:20:25,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 583 transitions, 12878 flow. Second operand has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:25,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:20:25,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:20:25,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:20:27,406 INFO L124 PetriNetUnfolderBase]: 3466/6842 cut-off events. [2024-01-30 14:20:27,406 INFO L125 PetriNetUnfolderBase]: For 213993/215240 co-relation queries the response was YES. [2024-01-30 14:20:27,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51067 conditions, 6842 events. 3466/6842 cut-off events. For 213993/215240 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 54780 event pairs, 902 based on Foata normal form. 108/6822 useless extension candidates. Maximal degree in co-relation 50940. Up to 3465 conditions per place. [2024-01-30 14:20:27,497 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 495 selfloop transitions, 110 changer transitions 15/648 dead transitions. [2024-01-30 14:20:27,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 648 transitions, 14735 flow [2024-01-30 14:20:27,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-30 14:20:27,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-30 14:20:27,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 295 transitions. [2024-01-30 14:20:27,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39438502673796794 [2024-01-30 14:20:27,498 INFO L175 Difference]: Start difference. First operand has 451 places, 583 transitions, 12878 flow. Second operand 11 states and 295 transitions. [2024-01-30 14:20:27,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 648 transitions, 14735 flow [2024-01-30 14:20:28,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 648 transitions, 14365 flow, removed 12 selfloop flow, removed 16 redundant places. [2024-01-30 14:20:28,393 INFO L231 Difference]: Finished difference. Result has 446 places, 568 transitions, 12517 flow [2024-01-30 14:20:28,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=12516, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=583, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=473, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12517, PETRI_PLACES=446, PETRI_TRANSITIONS=568} [2024-01-30 14:20:28,394 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 374 predicate places. [2024-01-30 14:20:28,394 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 568 transitions, 12517 flow [2024-01-30 14:20:28,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:28,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:20:28,395 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] [2024-01-30 14:20:28,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-01-30 14:20:28,395 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:20:28,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:20:28,395 INFO L85 PathProgramCache]: Analyzing trace with hash -535604718, now seen corresponding path program 6 times [2024-01-30 14:20:28,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:20:28,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773727562] [2024-01-30 14:20:28,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:20:28,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:20:28,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:20:28,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:20:28,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:20:28,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773727562] [2024-01-30 14:20:28,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773727562] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:20:28,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:20:28,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-30 14:20:28,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711118190] [2024-01-30 14:20:28,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:20:28,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-30 14:20:28,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:20:28,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-30 14:20:28,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-01-30 14:20:28,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:20:28,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 568 transitions, 12517 flow. Second operand has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:28,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:20:28,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:20:28,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:20:30,322 INFO L124 PetriNetUnfolderBase]: 3350/6794 cut-off events. [2024-01-30 14:20:30,323 INFO L125 PetriNetUnfolderBase]: For 205436/206039 co-relation queries the response was YES. [2024-01-30 14:20:30,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50340 conditions, 6794 events. 3350/6794 cut-off events. For 205436/206039 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 55586 event pairs, 819 based on Foata normal form. 97/6742 useless extension candidates. Maximal degree in co-relation 50215. Up to 2006 conditions per place. [2024-01-30 14:20:30,410 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 402 selfloop transitions, 153 changer transitions 35/619 dead transitions. [2024-01-30 14:20:30,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 619 transitions, 14294 flow [2024-01-30 14:20:30,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-30 14:20:30,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-30 14:20:30,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 250 transitions. [2024-01-30 14:20:30,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4084967320261438 [2024-01-30 14:20:30,411 INFO L175 Difference]: Start difference. First operand has 446 places, 568 transitions, 12517 flow. Second operand 9 states and 250 transitions. [2024-01-30 14:20:30,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 619 transitions, 14294 flow [2024-01-30 14:20:31,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 619 transitions, 13892 flow, removed 15 selfloop flow, removed 21 redundant places. [2024-01-30 14:20:31,205 INFO L231 Difference]: Finished difference. Result has 434 places, 534 transitions, 11817 flow [2024-01-30 14:20:31,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=12135, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=568, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=415, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11817, PETRI_PLACES=434, PETRI_TRANSITIONS=534} [2024-01-30 14:20:31,206 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 362 predicate places. [2024-01-30 14:20:31,206 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 534 transitions, 11817 flow [2024-01-30 14:20:31,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:31,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:20:31,206 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] [2024-01-30 14:20:31,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-01-30 14:20:31,206 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:20:31,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:20:31,207 INFO L85 PathProgramCache]: Analyzing trace with hash 809166316, now seen corresponding path program 7 times [2024-01-30 14:20:31,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:20:31,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306737238] [2024-01-30 14:20:31,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:20:31,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:20:31,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:20:31,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:20:31,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:20:31,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306737238] [2024-01-30 14:20:31,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306737238] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:20:31,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:20:31,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-30 14:20:31,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237060704] [2024-01-30 14:20:31,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:20:31,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-30 14:20:31,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:20:31,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-30 14:20:31,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-01-30 14:20:31,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:20:31,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 534 transitions, 11817 flow. Second operand has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:31,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:20:31,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:20:31,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:20:33,195 INFO L124 PetriNetUnfolderBase]: 3181/6473 cut-off events. [2024-01-30 14:20:33,195 INFO L125 PetriNetUnfolderBase]: For 187657/188272 co-relation queries the response was YES. [2024-01-30 14:20:33,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47907 conditions, 6473 events. 3181/6473 cut-off events. For 187657/188272 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 52645 event pairs, 781 based on Foata normal form. 109/6442 useless extension candidates. Maximal degree in co-relation 47786. Up to 1922 conditions per place. [2024-01-30 14:20:33,272 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 412 selfloop transitions, 135 changer transitions 12/588 dead transitions. [2024-01-30 14:20:33,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 588 transitions, 13524 flow [2024-01-30 14:20:33,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-30 14:20:33,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-30 14:20:33,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 247 transitions. [2024-01-30 14:20:33,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4035947712418301 [2024-01-30 14:20:33,273 INFO L175 Difference]: Start difference. First operand has 434 places, 534 transitions, 11817 flow. Second operand 9 states and 247 transitions. [2024-01-30 14:20:33,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 588 transitions, 13524 flow [2024-01-30 14:20:33,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 588 transitions, 12946 flow, removed 8 selfloop flow, removed 20 redundant places. [2024-01-30 14:20:33,952 INFO L231 Difference]: Finished difference. Result has 423 places, 522 transitions, 11329 flow [2024-01-30 14:20:33,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=11239, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=534, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11329, PETRI_PLACES=423, PETRI_TRANSITIONS=522} [2024-01-30 14:20:33,952 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 351 predicate places. [2024-01-30 14:20:33,953 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 522 transitions, 11329 flow [2024-01-30 14:20:33,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:33,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:20:33,953 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] [2024-01-30 14:20:33,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-01-30 14:20:33,953 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:20:33,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:20:33,954 INFO L85 PathProgramCache]: Analyzing trace with hash 217437988, now seen corresponding path program 3 times [2024-01-30 14:20:33,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:20:33,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461398646] [2024-01-30 14:20:33,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:20:33,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:20:33,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:20:34,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:20:34,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:20:34,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461398646] [2024-01-30 14:20:34,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461398646] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:20:34,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:20:34,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-30 14:20:34,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935588759] [2024-01-30 14:20:34,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:20:34,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-30 14:20:34,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:20:34,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-30 14:20:34,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-01-30 14:20:34,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:20:34,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 522 transitions, 11329 flow. Second operand has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:34,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:20:34,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:20:34,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:20:36,029 INFO L124 PetriNetUnfolderBase]: 3326/6672 cut-off events. [2024-01-30 14:20:36,030 INFO L125 PetriNetUnfolderBase]: For 182376/183580 co-relation queries the response was YES. [2024-01-30 14:20:36,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48490 conditions, 6672 events. 3326/6672 cut-off events. For 182376/183580 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 53978 event pairs, 1088 based on Foata normal form. 98/6637 useless extension candidates. Maximal degree in co-relation 48372. Up to 4690 conditions per place. [2024-01-30 14:20:36,113 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 500 selfloop transitions, 82 changer transitions 9/616 dead transitions. [2024-01-30 14:20:36,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 616 transitions, 13479 flow [2024-01-30 14:20:36,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-30 14:20:36,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-30 14:20:36,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 315 transitions. [2024-01-30 14:20:36,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3860294117647059 [2024-01-30 14:20:36,115 INFO L175 Difference]: Start difference. First operand has 423 places, 522 transitions, 11329 flow. Second operand 12 states and 315 transitions. [2024-01-30 14:20:36,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 616 transitions, 13479 flow [2024-01-30 14:20:36,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 616 transitions, 13172 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-01-30 14:20:36,865 INFO L231 Difference]: Finished difference. Result has 426 places, 515 transitions, 11041 flow [2024-01-30 14:20:36,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=11022, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11041, PETRI_PLACES=426, PETRI_TRANSITIONS=515} [2024-01-30 14:20:36,866 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 354 predicate places. [2024-01-30 14:20:36,866 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 515 transitions, 11041 flow [2024-01-30 14:20:36,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:36,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:20:36,866 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] [2024-01-30 14:20:36,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-01-30 14:20:36,867 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:20:36,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:20:36,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1555373828, now seen corresponding path program 4 times [2024-01-30 14:20:36,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:20:36,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471552299] [2024-01-30 14:20:36,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:20:36,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:20:36,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:20:37,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:20:37,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:20:37,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471552299] [2024-01-30 14:20:37,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471552299] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:20:37,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:20:37,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-30 14:20:37,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8185286] [2024-01-30 14:20:37,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:20:37,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-30 14:20:37,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:20:37,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-30 14:20:37,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-01-30 14:20:37,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:20:37,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 515 transitions, 11041 flow. Second operand has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:37,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:20:37,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:20:37,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:20:38,879 INFO L124 PetriNetUnfolderBase]: 3263/6555 cut-off events. [2024-01-30 14:20:38,879 INFO L125 PetriNetUnfolderBase]: For 174285/175483 co-relation queries the response was YES. [2024-01-30 14:20:38,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47307 conditions, 6555 events. 3263/6555 cut-off events. For 174285/175483 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 52881 event pairs, 1076 based on Foata normal form. 96/6520 useless extension candidates. Maximal degree in co-relation 47189. Up to 4690 conditions per place. [2024-01-30 14:20:38,968 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 469 selfloop transitions, 86 changer transitions 18/598 dead transitions. [2024-01-30 14:20:38,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 598 transitions, 12972 flow [2024-01-30 14:20:38,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-01-30 14:20:38,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-01-30 14:20:38,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 331 transitions. [2024-01-30 14:20:38,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3744343891402715 [2024-01-30 14:20:38,970 INFO L175 Difference]: Start difference. First operand has 426 places, 515 transitions, 11041 flow. Second operand 13 states and 331 transitions. [2024-01-30 14:20:38,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 598 transitions, 12972 flow [2024-01-30 14:20:39,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 598 transitions, 12802 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-01-30 14:20:39,634 INFO L231 Difference]: Finished difference. Result has 429 places, 500 transitions, 10820 flow [2024-01-30 14:20:39,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=10871, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=515, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=10820, PETRI_PLACES=429, PETRI_TRANSITIONS=500} [2024-01-30 14:20:39,635 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 357 predicate places. [2024-01-30 14:20:39,635 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 500 transitions, 10820 flow [2024-01-30 14:20:39,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:39,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:20:39,636 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] [2024-01-30 14:20:39,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-01-30 14:20:39,636 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:20:39,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:20:39,636 INFO L85 PathProgramCache]: Analyzing trace with hash -595291512, now seen corresponding path program 5 times [2024-01-30 14:20:39,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:20:39,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432030409] [2024-01-30 14:20:39,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:20:39,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:20:39,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:20:39,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:20:39,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:20:39,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432030409] [2024-01-30 14:20:39,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432030409] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:20:39,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:20:39,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-30 14:20:39,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990898856] [2024-01-30 14:20:39,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:20:39,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-30 14:20:39,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:20:39,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-30 14:20:39,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-01-30 14:20:39,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:20:39,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 500 transitions, 10820 flow. Second operand has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:39,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:20:39,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:20:39,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:20:41,456 INFO L124 PetriNetUnfolderBase]: 3207/6445 cut-off events. [2024-01-30 14:20:41,457 INFO L125 PetriNetUnfolderBase]: For 171522/172710 co-relation queries the response was YES. [2024-01-30 14:20:41,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46653 conditions, 6445 events. 3207/6445 cut-off events. For 171522/172710 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 51823 event pairs, 1060 based on Foata normal form. 92/6408 useless extension candidates. Maximal degree in co-relation 46534. Up to 4690 conditions per place. [2024-01-30 14:20:41,537 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 460 selfloop transitions, 70 changer transitions 26/580 dead transitions. [2024-01-30 14:20:41,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 580 transitions, 12684 flow [2024-01-30 14:20:41,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-30 14:20:41,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-30 14:20:41,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 287 transitions. [2024-01-30 14:20:41,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3836898395721925 [2024-01-30 14:20:41,538 INFO L175 Difference]: Start difference. First operand has 429 places, 500 transitions, 10820 flow. Second operand 11 states and 287 transitions. [2024-01-30 14:20:41,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 580 transitions, 12684 flow [2024-01-30 14:20:42,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 580 transitions, 12539 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-01-30 14:20:42,222 INFO L231 Difference]: Finished difference. Result has 429 places, 478 transitions, 10448 flow [2024-01-30 14:20:42,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=10675, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10448, PETRI_PLACES=429, PETRI_TRANSITIONS=478} [2024-01-30 14:20:42,222 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 357 predicate places. [2024-01-30 14:20:42,223 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 478 transitions, 10448 flow [2024-01-30 14:20:42,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:42,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:20:42,223 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] [2024-01-30 14:20:42,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-01-30 14:20:42,223 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:20:42,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:20:42,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1949297474, now seen corresponding path program 6 times [2024-01-30 14:20:42,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:20:42,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607250557] [2024-01-30 14:20:42,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:20:42,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:20:42,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:20:42,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:20:42,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:20:42,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607250557] [2024-01-30 14:20:42,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607250557] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:20:42,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:20:42,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-30 14:20:42,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438589986] [2024-01-30 14:20:42,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:20:42,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-30 14:20:42,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:20:42,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-30 14:20:42,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-01-30 14:20:42,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:20:42,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 478 transitions, 10448 flow. Second operand has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:42,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:20:42,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:20:42,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:20:44,105 INFO L124 PetriNetUnfolderBase]: 3133/6289 cut-off events. [2024-01-30 14:20:44,105 INFO L125 PetriNetUnfolderBase]: For 170708/171892 co-relation queries the response was YES. [2024-01-30 14:20:44,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45912 conditions, 6289 events. 3133/6289 cut-off events. For 170708/171892 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 50270 event pairs, 1012 based on Foata normal form. 109/6273 useless extension candidates. Maximal degree in co-relation 45792. Up to 4465 conditions per place. [2024-01-30 14:20:44,173 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 479 selfloop transitions, 58 changer transitions 9/570 dead transitions. [2024-01-30 14:20:44,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 570 transitions, 12526 flow [2024-01-30 14:20:44,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-30 14:20:44,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-30 14:20:44,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 294 transitions. [2024-01-30 14:20:44,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.393048128342246 [2024-01-30 14:20:44,174 INFO L175 Difference]: Start difference. First operand has 429 places, 478 transitions, 10448 flow. Second operand 11 states and 294 transitions. [2024-01-30 14:20:44,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 570 transitions, 12526 flow [2024-01-30 14:20:44,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 570 transitions, 12326 flow, removed 9 selfloop flow, removed 15 redundant places. [2024-01-30 14:20:44,789 INFO L231 Difference]: Finished difference. Result has 425 places, 471 transitions, 10212 flow [2024-01-30 14:20:44,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=10254, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=478, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10212, PETRI_PLACES=425, PETRI_TRANSITIONS=471} [2024-01-30 14:20:44,790 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 353 predicate places. [2024-01-30 14:20:44,790 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 471 transitions, 10212 flow [2024-01-30 14:20:44,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:44,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:20:44,790 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] [2024-01-30 14:20:44,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-01-30 14:20:44,790 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:20:44,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:20:44,791 INFO L85 PathProgramCache]: Analyzing trace with hash -601260166, now seen corresponding path program 8 times [2024-01-30 14:20:44,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:20:44,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540589532] [2024-01-30 14:20:44,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:20:44,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:20:44,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:20:45,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:20:45,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:20:45,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540589532] [2024-01-30 14:20:45,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540589532] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:20:45,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:20:45,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-30 14:20:45,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639156505] [2024-01-30 14:20:45,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:20:45,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-30 14:20:45,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:20:45,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-30 14:20:45,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-01-30 14:20:45,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:20:45,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 471 transitions, 10212 flow. Second operand has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:45,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:20:45,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:20:45,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:20:46,525 INFO L124 PetriNetUnfolderBase]: 2935/6139 cut-off events. [2024-01-30 14:20:46,525 INFO L125 PetriNetUnfolderBase]: For 164701/165268 co-relation queries the response was YES. [2024-01-30 14:20:46,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44341 conditions, 6139 events. 2935/6139 cut-off events. For 164701/165268 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 50311 event pairs, 738 based on Foata normal form. 79/6099 useless extension candidates. Maximal degree in co-relation 44221. Up to 3038 conditions per place. [2024-01-30 14:20:46,596 INFO L140 encePairwiseOnDemand]: 55/68 looper letters, 356 selfloop transitions, 134 changer transitions 9/528 dead transitions. [2024-01-30 14:20:46,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 528 transitions, 11809 flow [2024-01-30 14:20:46,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-30 14:20:46,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-30 14:20:46,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 288 transitions. [2024-01-30 14:20:46,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3850267379679144 [2024-01-30 14:20:46,598 INFO L175 Difference]: Start difference. First operand has 425 places, 471 transitions, 10212 flow. Second operand 11 states and 288 transitions. [2024-01-30 14:20:46,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 528 transitions, 11809 flow [2024-01-30 14:20:47,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 528 transitions, 11435 flow, removed 3 selfloop flow, removed 23 redundant places. [2024-01-30 14:20:47,277 INFO L231 Difference]: Finished difference. Result has 411 places, 460 transitions, 9969 flow [2024-01-30 14:20:47,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=9770, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9969, PETRI_PLACES=411, PETRI_TRANSITIONS=460} [2024-01-30 14:20:47,278 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 339 predicate places. [2024-01-30 14:20:47,278 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 460 transitions, 9969 flow [2024-01-30 14:20:47,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:47,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:20:47,279 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] [2024-01-30 14:20:47,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-01-30 14:20:47,279 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:20:47,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:20:47,279 INFO L85 PathProgramCache]: Analyzing trace with hash 216569404, now seen corresponding path program 7 times [2024-01-30 14:20:47,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:20:47,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115592888] [2024-01-30 14:20:47,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:20:47,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:20:47,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:20:47,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:20:47,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:20:47,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115592888] [2024-01-30 14:20:47,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115592888] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:20:47,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:20:47,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-30 14:20:47,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171285890] [2024-01-30 14:20:47,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:20:47,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-30 14:20:47,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:20:47,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-30 14:20:47,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-01-30 14:20:47,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:20:47,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 460 transitions, 9969 flow. Second operand has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:47,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:20:47,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:20:47,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:20:48,946 INFO L124 PetriNetUnfolderBase]: 2997/6042 cut-off events. [2024-01-30 14:20:48,947 INFO L125 PetriNetUnfolderBase]: For 157960/159030 co-relation queries the response was YES. [2024-01-30 14:20:48,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43851 conditions, 6042 events. 2997/6042 cut-off events. For 157960/159030 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 48119 event pairs, 960 based on Foata normal form. 107/6031 useless extension candidates. Maximal degree in co-relation 43741. Up to 4358 conditions per place. [2024-01-30 14:20:49,009 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 434 selfloop transitions, 67 changer transitions 18/543 dead transitions. [2024-01-30 14:20:49,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 543 transitions, 11806 flow [2024-01-30 14:20:49,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-30 14:20:49,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-30 14:20:49,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 312 transitions. [2024-01-30 14:20:49,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38235294117647056 [2024-01-30 14:20:49,010 INFO L175 Difference]: Start difference. First operand has 411 places, 460 transitions, 9969 flow. Second operand 12 states and 312 transitions. [2024-01-30 14:20:49,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 543 transitions, 11806 flow [2024-01-30 14:20:49,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 543 transitions, 11481 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-01-30 14:20:49,568 INFO L231 Difference]: Finished difference. Result has 410 places, 445 transitions, 9515 flow [2024-01-30 14:20:49,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=9646, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9515, PETRI_PLACES=410, PETRI_TRANSITIONS=445} [2024-01-30 14:20:49,569 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 338 predicate places. [2024-01-30 14:20:49,569 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 445 transitions, 9515 flow [2024-01-30 14:20:49,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:49,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:20:49,569 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] [2024-01-30 14:20:49,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-01-30 14:20:49,569 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:20:49,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:20:49,570 INFO L85 PathProgramCache]: Analyzing trace with hash -414152568, now seen corresponding path program 8 times [2024-01-30 14:20:49,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:20:49,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616770833] [2024-01-30 14:20:49,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:20:49,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:20:49,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:20:49,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:20:49,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:20:49,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616770833] [2024-01-30 14:20:49,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616770833] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:20:49,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:20:49,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-30 14:20:49,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043144300] [2024-01-30 14:20:49,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:20:49,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-30 14:20:49,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:20:49,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-30 14:20:49,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-01-30 14:20:49,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:20:49,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 445 transitions, 9515 flow. Second operand has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:49,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:20:49,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:20:49,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:20:51,513 INFO L124 PetriNetUnfolderBase]: 2926/5938 cut-off events. [2024-01-30 14:20:51,513 INFO L125 PetriNetUnfolderBase]: For 140200/141234 co-relation queries the response was YES. [2024-01-30 14:20:51,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42568 conditions, 5938 events. 2926/5938 cut-off events. For 140200/141234 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 47265 event pairs, 781 based on Foata normal form. 91/5917 useless extension candidates. Maximal degree in co-relation 42461. Up to 2547 conditions per place. [2024-01-30 14:20:51,600 INFO L140 encePairwiseOnDemand]: 55/68 looper letters, 408 selfloop transitions, 108 changer transitions 10/550 dead transitions. [2024-01-30 14:20:51,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 550 transitions, 11641 flow [2024-01-30 14:20:51,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-01-30 14:20:51,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-01-30 14:20:51,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 367 transitions. [2024-01-30 14:20:51,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3855042016806723 [2024-01-30 14:20:51,601 INFO L175 Difference]: Start difference. First operand has 410 places, 445 transitions, 9515 flow. Second operand 14 states and 367 transitions. [2024-01-30 14:20:51,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 550 transitions, 11641 flow [2024-01-30 14:20:52,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 550 transitions, 11519 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-01-30 14:20:52,312 INFO L231 Difference]: Finished difference. Result has 414 places, 437 transitions, 9499 flow [2024-01-30 14:20:52,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=9393, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=9499, PETRI_PLACES=414, PETRI_TRANSITIONS=437} [2024-01-30 14:20:52,312 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 342 predicate places. [2024-01-30 14:20:52,312 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 437 transitions, 9499 flow [2024-01-30 14:20:52,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:52,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:20:52,313 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] [2024-01-30 14:20:52,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-01-30 14:20:52,313 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:20:52,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:20:52,313 INFO L85 PathProgramCache]: Analyzing trace with hash -656323960, now seen corresponding path program 9 times [2024-01-30 14:20:52,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:20:52,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288241030] [2024-01-30 14:20:52,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:20:52,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:20:52,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:20:52,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:20:52,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:20:52,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288241030] [2024-01-30 14:20:52,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288241030] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:20:52,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:20:52,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-30 14:20:52,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372476875] [2024-01-30 14:20:52,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:20:52,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-30 14:20:52,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:20:52,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-30 14:20:52,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-01-30 14:20:52,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:20:52,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 437 transitions, 9499 flow. Second operand has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:52,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:20:52,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:20:52,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:20:53,950 INFO L124 PetriNetUnfolderBase]: 2923/5905 cut-off events. [2024-01-30 14:20:53,951 INFO L125 PetriNetUnfolderBase]: For 145932/146989 co-relation queries the response was YES. [2024-01-30 14:20:53,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42924 conditions, 5905 events. 2923/5905 cut-off events. For 145932/146989 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 46839 event pairs, 951 based on Foata normal form. 101/5888 useless extension candidates. Maximal degree in co-relation 42816. Up to 4336 conditions per place. [2024-01-30 14:20:54,017 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 430 selfloop transitions, 50 changer transitions 19/523 dead transitions. [2024-01-30 14:20:54,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 523 transitions, 11295 flow [2024-01-30 14:20:54,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-30 14:20:54,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-30 14:20:54,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 307 transitions. [2024-01-30 14:20:54,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3762254901960784 [2024-01-30 14:20:54,018 INFO L175 Difference]: Start difference. First operand has 414 places, 437 transitions, 9499 flow. Second operand 12 states and 307 transitions. [2024-01-30 14:20:54,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 523 transitions, 11295 flow [2024-01-30 14:20:54,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 523 transitions, 11153 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-01-30 14:20:54,565 INFO L231 Difference]: Finished difference. Result has 414 places, 422 transitions, 9186 flow [2024-01-30 14:20:54,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=9357, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9186, PETRI_PLACES=414, PETRI_TRANSITIONS=422} [2024-01-30 14:20:54,566 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 342 predicate places. [2024-01-30 14:20:54,566 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 422 transitions, 9186 flow [2024-01-30 14:20:54,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:54,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:20:54,566 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] [2024-01-30 14:20:54,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-01-30 14:20:54,567 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:20:54,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:20:54,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1895833860, now seen corresponding path program 10 times [2024-01-30 14:20:54,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:20:54,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232651924] [2024-01-30 14:20:54,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:20:54,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:20:54,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:20:54,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:20:54,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:20:54,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232651924] [2024-01-30 14:20:54,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232651924] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:20:54,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:20:54,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-30 14:20:54,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485742545] [2024-01-30 14:20:54,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:20:54,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-30 14:20:54,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:20:54,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-30 14:20:54,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-01-30 14:20:54,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:20:54,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 422 transitions, 9186 flow. Second operand has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:54,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:20:54,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:20:54,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:20:56,214 INFO L124 PetriNetUnfolderBase]: 2810/5722 cut-off events. [2024-01-30 14:20:56,214 INFO L125 PetriNetUnfolderBase]: For 134022/135018 co-relation queries the response was YES. [2024-01-30 14:20:56,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41115 conditions, 5722 events. 2810/5722 cut-off events. For 134022/135018 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 45304 event pairs, 767 based on Foata normal form. 77/5690 useless extension candidates. Maximal degree in co-relation 41006. Up to 2551 conditions per place. [2024-01-30 14:20:56,270 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 353 selfloop transitions, 107 changer transitions 15/499 dead transitions. [2024-01-30 14:20:56,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 499 transitions, 10837 flow [2024-01-30 14:20:56,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-30 14:20:56,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-30 14:20:56,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 305 transitions. [2024-01-30 14:20:56,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3737745098039216 [2024-01-30 14:20:56,271 INFO L175 Difference]: Start difference. First operand has 414 places, 422 transitions, 9186 flow. Second operand 12 states and 305 transitions. [2024-01-30 14:20:56,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 499 transitions, 10837 flow [2024-01-30 14:20:56,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 499 transitions, 10723 flow, removed 2 selfloop flow, removed 14 redundant places. [2024-01-30 14:20:56,747 INFO L231 Difference]: Finished difference. Result has 412 places, 408 transitions, 9044 flow [2024-01-30 14:20:56,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=9072, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9044, PETRI_PLACES=412, PETRI_TRANSITIONS=408} [2024-01-30 14:20:56,748 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 340 predicate places. [2024-01-30 14:20:56,748 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 408 transitions, 9044 flow [2024-01-30 14:20:56,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:56,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:20:56,748 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] [2024-01-30 14:20:56,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-01-30 14:20:56,748 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:20:56,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:20:56,749 INFO L85 PathProgramCache]: Analyzing trace with hash 438699578, now seen corresponding path program 11 times [2024-01-30 14:20:56,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:20:56,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029852921] [2024-01-30 14:20:56,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:20:56,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:20:56,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:20:57,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:20:57,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:20:57,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029852921] [2024-01-30 14:20:57,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029852921] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:20:57,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:20:57,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-30 14:20:57,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083408655] [2024-01-30 14:20:57,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:20:57,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-30 14:20:57,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:20:57,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-30 14:20:57,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-01-30 14:20:57,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:20:57,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 408 transitions, 9044 flow. Second operand has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:57,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:20:57,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:20:57,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:20:58,313 INFO L124 PetriNetUnfolderBase]: 2810/5760 cut-off events. [2024-01-30 14:20:58,314 INFO L125 PetriNetUnfolderBase]: For 139552/140539 co-relation queries the response was YES. [2024-01-30 14:20:58,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41791 conditions, 5760 events. 2810/5760 cut-off events. For 139552/140539 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 45832 event pairs, 683 based on Foata normal form. 84/5746 useless extension candidates. Maximal degree in co-relation 41681. Up to 2848 conditions per place. [2024-01-30 14:20:58,378 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 346 selfloop transitions, 106 changer transitions 6/482 dead transitions. [2024-01-30 14:20:58,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 482 transitions, 10780 flow [2024-01-30 14:20:58,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-30 14:20:58,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-30 14:20:58,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 276 transitions. [2024-01-30 14:20:58,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40588235294117647 [2024-01-30 14:20:58,379 INFO L175 Difference]: Start difference. First operand has 412 places, 408 transitions, 9044 flow. Second operand 10 states and 276 transitions. [2024-01-30 14:20:58,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 482 transitions, 10780 flow [2024-01-30 14:20:58,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 482 transitions, 10571 flow, removed 0 selfloop flow, removed 15 redundant places. [2024-01-30 14:20:58,919 INFO L231 Difference]: Finished difference. Result has 407 places, 404 transitions, 8991 flow [2024-01-30 14:20:58,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=8835, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8991, PETRI_PLACES=407, PETRI_TRANSITIONS=404} [2024-01-30 14:20:58,919 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 335 predicate places. [2024-01-30 14:20:58,920 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 404 transitions, 8991 flow [2024-01-30 14:20:58,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:58,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:20:58,933 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] [2024-01-30 14:20:58,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-01-30 14:20:58,934 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:20:58,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:20:58,934 INFO L85 PathProgramCache]: Analyzing trace with hash -995969150, now seen corresponding path program 12 times [2024-01-30 14:20:58,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:20:58,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995467309] [2024-01-30 14:20:58,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:20:58,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:20:58,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:20:59,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:20:59,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:20:59,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995467309] [2024-01-30 14:20:59,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995467309] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:20:59,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:20:59,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-30 14:20:59,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227686699] [2024-01-30 14:20:59,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:20:59,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-30 14:20:59,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:20:59,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-30 14:20:59,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-01-30 14:20:59,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:20:59,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 404 transitions, 8991 flow. Second operand has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:20:59,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:20:59,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:20:59,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:21:00,675 INFO L124 PetriNetUnfolderBase]: 2764/5674 cut-off events. [2024-01-30 14:21:00,675 INFO L125 PetriNetUnfolderBase]: For 136716/137697 co-relation queries the response was YES. [2024-01-30 14:21:00,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41293 conditions, 5674 events. 2764/5674 cut-off events. For 136716/137697 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 45009 event pairs, 852 based on Foata normal form. 86/5670 useless extension candidates. Maximal degree in co-relation 41182. Up to 1990 conditions per place. [2024-01-30 14:21:00,738 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 333 selfloop transitions, 90 changer transitions 18/464 dead transitions. [2024-01-30 14:21:00,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 464 transitions, 10447 flow [2024-01-30 14:21:00,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-30 14:21:00,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-30 14:21:00,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 266 transitions. [2024-01-30 14:21:00,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3911764705882353 [2024-01-30 14:21:00,740 INFO L175 Difference]: Start difference. First operand has 407 places, 404 transitions, 8991 flow. Second operand 10 states and 266 transitions. [2024-01-30 14:21:00,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 464 transitions, 10447 flow [2024-01-30 14:21:01,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 464 transitions, 10257 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-01-30 14:21:01,293 INFO L231 Difference]: Finished difference. Result has 410 places, 387 transitions, 8725 flow [2024-01-30 14:21:01,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=8801, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8725, PETRI_PLACES=410, PETRI_TRANSITIONS=387} [2024-01-30 14:21:01,293 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 338 predicate places. [2024-01-30 14:21:01,294 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 387 transitions, 8725 flow [2024-01-30 14:21:01,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:01,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:21:01,294 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] [2024-01-30 14:21:01,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-01-30 14:21:01,294 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:21:01,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:21:01,294 INFO L85 PathProgramCache]: Analyzing trace with hash -634696940, now seen corresponding path program 13 times [2024-01-30 14:21:01,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:21:01,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285558168] [2024-01-30 14:21:01,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:21:01,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:21:01,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:21:01,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:21:01,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:21:01,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285558168] [2024-01-30 14:21:01,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285558168] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:21:01,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:21:01,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-30 14:21:01,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149153973] [2024-01-30 14:21:01,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:21:01,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-30 14:21:01,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:21:01,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-30 14:21:01,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-01-30 14:21:01,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:21:01,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 387 transitions, 8725 flow. Second operand has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:01,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:21:01,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:21:01,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:21:02,912 INFO L124 PetriNetUnfolderBase]: 2676/5516 cut-off events. [2024-01-30 14:21:02,912 INFO L125 PetriNetUnfolderBase]: For 130574/131529 co-relation queries the response was YES. [2024-01-30 14:21:02,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40156 conditions, 5516 events. 2676/5516 cut-off events. For 130574/131529 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 43675 event pairs, 821 based on Foata normal form. 84/5513 useless extension candidates. Maximal degree in co-relation 40044. Up to 1990 conditions per place. [2024-01-30 14:21:02,979 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 324 selfloop transitions, 88 changer transitions 11/444 dead transitions. [2024-01-30 14:21:02,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 444 transitions, 10127 flow [2024-01-30 14:21:02,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-30 14:21:02,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-30 14:21:02,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 244 transitions. [2024-01-30 14:21:02,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39869281045751637 [2024-01-30 14:21:02,980 INFO L175 Difference]: Start difference. First operand has 410 places, 387 transitions, 8725 flow. Second operand 9 states and 244 transitions. [2024-01-30 14:21:02,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 444 transitions, 10127 flow [2024-01-30 14:21:03,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 444 transitions, 9710 flow, removed 16 selfloop flow, removed 16 redundant places. [2024-01-30 14:21:03,514 INFO L231 Difference]: Finished difference. Result has 403 places, 377 transitions, 8340 flow [2024-01-30 14:21:03,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=8324, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8340, PETRI_PLACES=403, PETRI_TRANSITIONS=377} [2024-01-30 14:21:03,515 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 331 predicate places. [2024-01-30 14:21:03,515 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 377 transitions, 8340 flow [2024-01-30 14:21:03,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:03,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:21:03,515 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] [2024-01-30 14:21:03,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-01-30 14:21:03,516 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:21:03,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:21:03,516 INFO L85 PathProgramCache]: Analyzing trace with hash 447186468, now seen corresponding path program 14 times [2024-01-30 14:21:03,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:21:03,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435607097] [2024-01-30 14:21:03,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:21:03,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:21:03,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:21:03,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:21:03,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:21:03,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435607097] [2024-01-30 14:21:03,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435607097] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:21:03,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:21:03,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-30 14:21:03,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842254472] [2024-01-30 14:21:03,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:21:03,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-30 14:21:03,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:21:03,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-30 14:21:03,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-01-30 14:21:03,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:21:03,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 377 transitions, 8340 flow. Second operand has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:03,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:21:03,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:21:03,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:21:05,024 INFO L124 PetriNetUnfolderBase]: 2613/5399 cut-off events. [2024-01-30 14:21:05,024 INFO L125 PetriNetUnfolderBase]: For 113214/114133 co-relation queries the response was YES. [2024-01-30 14:21:05,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38611 conditions, 5399 events. 2613/5399 cut-off events. For 113214/114133 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 42572 event pairs, 809 based on Foata normal form. 62/5372 useless extension candidates. Maximal degree in co-relation 38503. Up to 1990 conditions per place. [2024-01-30 14:21:05,085 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 287 selfloop transitions, 94 changer transitions 21/423 dead transitions. [2024-01-30 14:21:05,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 423 transitions, 9485 flow [2024-01-30 14:21:05,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-30 14:21:05,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-30 14:21:05,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 242 transitions. [2024-01-30 14:21:05,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3954248366013072 [2024-01-30 14:21:05,086 INFO L175 Difference]: Start difference. First operand has 403 places, 377 transitions, 8340 flow. Second operand 9 states and 242 transitions. [2024-01-30 14:21:05,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 423 transitions, 9485 flow [2024-01-30 14:21:05,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 423 transitions, 9095 flow, removed 18 selfloop flow, removed 15 redundant places. [2024-01-30 14:21:05,547 INFO L231 Difference]: Finished difference. Result has 397 places, 356 transitions, 7852 flow [2024-01-30 14:21:05,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=7960, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7852, PETRI_PLACES=397, PETRI_TRANSITIONS=356} [2024-01-30 14:21:05,547 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 325 predicate places. [2024-01-30 14:21:05,547 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 356 transitions, 7852 flow [2024-01-30 14:21:05,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:05,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:21:05,548 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] [2024-01-30 14:21:05,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-01-30 14:21:05,548 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:21:05,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:21:05,548 INFO L85 PathProgramCache]: Analyzing trace with hash -860955308, now seen corresponding path program 15 times [2024-01-30 14:21:05,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:21:05,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200773242] [2024-01-30 14:21:05,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:21:05,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:21:05,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:21:05,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:21:05,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:21:05,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200773242] [2024-01-30 14:21:05,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200773242] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:21:05,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:21:05,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-30 14:21:05,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276897427] [2024-01-30 14:21:05,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:21:05,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-30 14:21:05,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:21:05,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-30 14:21:05,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-01-30 14:21:05,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:21:05,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 356 transitions, 7852 flow. Second operand has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:05,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:21:05,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:21:05,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:21:06,978 INFO L124 PetriNetUnfolderBase]: 2572/5330 cut-off events. [2024-01-30 14:21:06,979 INFO L125 PetriNetUnfolderBase]: For 96247/96906 co-relation queries the response was YES. [2024-01-30 14:21:07,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36963 conditions, 5330 events. 2572/5330 cut-off events. For 96247/96906 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 42057 event pairs, 620 based on Foata normal form. 68/5307 useless extension candidates. Maximal degree in co-relation 36861. Up to 2536 conditions per place. [2024-01-30 14:21:07,039 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 312 selfloop transitions, 94 changer transitions 10/437 dead transitions. [2024-01-30 14:21:07,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 437 transitions, 9428 flow [2024-01-30 14:21:07,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-30 14:21:07,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-30 14:21:07,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 322 transitions. [2024-01-30 14:21:07,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3946078431372549 [2024-01-30 14:21:07,041 INFO L175 Difference]: Start difference. First operand has 397 places, 356 transitions, 7852 flow. Second operand 12 states and 322 transitions. [2024-01-30 14:21:07,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 437 transitions, 9428 flow [2024-01-30 14:21:07,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 437 transitions, 8958 flow, removed 17 selfloop flow, removed 21 redundant places. [2024-01-30 14:21:07,437 INFO L231 Difference]: Finished difference. Result has 388 places, 348 transitions, 7489 flow [2024-01-30 14:21:07,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=7400, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7489, PETRI_PLACES=388, PETRI_TRANSITIONS=348} [2024-01-30 14:21:07,437 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 316 predicate places. [2024-01-30 14:21:07,437 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 348 transitions, 7489 flow [2024-01-30 14:21:07,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:07,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:21:07,438 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] [2024-01-30 14:21:07,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-01-30 14:21:07,438 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:21:07,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:21:07,438 INFO L85 PathProgramCache]: Analyzing trace with hash -769211526, now seen corresponding path program 16 times [2024-01-30 14:21:07,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:21:07,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797241960] [2024-01-30 14:21:07,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:21:07,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:21:07,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:21:07,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:21:07,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:21:07,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797241960] [2024-01-30 14:21:07,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797241960] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:21:07,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:21:07,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-30 14:21:07,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370818463] [2024-01-30 14:21:07,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:21:07,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-30 14:21:07,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:21:07,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-30 14:21:07,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-01-30 14:21:07,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:21:07,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 348 transitions, 7489 flow. Second operand has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:07,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:21:07,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:21:07,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:21:08,794 INFO L124 PetriNetUnfolderBase]: 2572/5319 cut-off events. [2024-01-30 14:21:08,794 INFO L125 PetriNetUnfolderBase]: For 89759/90402 co-relation queries the response was YES. [2024-01-30 14:21:08,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36817 conditions, 5319 events. 2572/5319 cut-off events. For 89759/90402 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 41713 event pairs, 531 based on Foata normal form. 88/5304 useless extension candidates. Maximal degree in co-relation 36719. Up to 2224 conditions per place. [2024-01-30 14:21:08,857 INFO L140 encePairwiseOnDemand]: 52/68 looper letters, 259 selfloop transitions, 123 changer transitions 6/409 dead transitions. [2024-01-30 14:21:08,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 409 transitions, 8746 flow [2024-01-30 14:21:08,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-30 14:21:08,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-30 14:21:08,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 291 transitions. [2024-01-30 14:21:08,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3890374331550802 [2024-01-30 14:21:08,858 INFO L175 Difference]: Start difference. First operand has 388 places, 348 transitions, 7489 flow. Second operand 11 states and 291 transitions. [2024-01-30 14:21:08,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 409 transitions, 8746 flow [2024-01-30 14:21:09,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 409 transitions, 8491 flow, removed 2 selfloop flow, removed 16 redundant places. [2024-01-30 14:21:09,192 INFO L231 Difference]: Finished difference. Result has 384 places, 344 transitions, 7469 flow [2024-01-30 14:21:09,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=7234, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7469, PETRI_PLACES=384, PETRI_TRANSITIONS=344} [2024-01-30 14:21:09,193 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 312 predicate places. [2024-01-30 14:21:09,193 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 344 transitions, 7469 flow [2024-01-30 14:21:09,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:09,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:21:09,193 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] [2024-01-30 14:21:09,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-01-30 14:21:09,193 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:21:09,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:21:09,194 INFO L85 PathProgramCache]: Analyzing trace with hash 166834192, now seen corresponding path program 17 times [2024-01-30 14:21:09,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:21:09,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043370269] [2024-01-30 14:21:09,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:21:09,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:21:09,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:21:09,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:21:09,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:21:09,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043370269] [2024-01-30 14:21:09,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043370269] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:21:09,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:21:09,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-30 14:21:09,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436561700] [2024-01-30 14:21:09,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:21:09,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-30 14:21:09,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:21:09,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-30 14:21:09,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-01-30 14:21:09,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:21:09,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 344 transitions, 7469 flow. Second operand has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:09,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:21:09,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:21:09,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:21:10,636 INFO L124 PetriNetUnfolderBase]: 2504/5214 cut-off events. [2024-01-30 14:21:10,636 INFO L125 PetriNetUnfolderBase]: For 83636/84261 co-relation queries the response was YES. [2024-01-30 14:21:10,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36555 conditions, 5214 events. 2504/5214 cut-off events. For 83636/84261 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 40962 event pairs, 616 based on Foata normal form. 52/5175 useless extension candidates. Maximal degree in co-relation 36456. Up to 2388 conditions per place. [2024-01-30 14:21:10,691 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 244 selfloop transitions, 129 changer transitions 12/406 dead transitions. [2024-01-30 14:21:10,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 406 transitions, 8740 flow [2024-01-30 14:21:10,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-30 14:21:10,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-30 14:21:10,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 289 transitions. [2024-01-30 14:21:10,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-01-30 14:21:10,692 INFO L175 Difference]: Start difference. First operand has 384 places, 344 transitions, 7469 flow. Second operand 11 states and 289 transitions. [2024-01-30 14:21:10,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 406 transitions, 8740 flow [2024-01-30 14:21:11,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 406 transitions, 8420 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-01-30 14:21:11,046 INFO L231 Difference]: Finished difference. Result has 383 places, 333 transitions, 7233 flow [2024-01-30 14:21:11,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=7158, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7233, PETRI_PLACES=383, PETRI_TRANSITIONS=333} [2024-01-30 14:21:11,046 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 311 predicate places. [2024-01-30 14:21:11,047 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 333 transitions, 7233 flow [2024-01-30 14:21:11,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:11,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:21:11,047 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] [2024-01-30 14:21:11,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-01-30 14:21:11,047 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:21:11,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:21:11,047 INFO L85 PathProgramCache]: Analyzing trace with hash -742516806, now seen corresponding path program 18 times [2024-01-30 14:21:11,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:21:11,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837839277] [2024-01-30 14:21:11,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:21:11,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:21:11,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:21:11,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:21:11,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:21:11,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837839277] [2024-01-30 14:21:11,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837839277] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:21:11,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:21:11,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-30 14:21:11,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276234982] [2024-01-30 14:21:11,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:21:11,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-30 14:21:11,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:21:11,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-30 14:21:11,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-01-30 14:21:11,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:21:11,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 333 transitions, 7233 flow. Second operand has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:11,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:21:11,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:21:11,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:21:12,427 INFO L124 PetriNetUnfolderBase]: 2524/5231 cut-off events. [2024-01-30 14:21:12,427 INFO L125 PetriNetUnfolderBase]: For 83000/83613 co-relation queries the response was YES. [2024-01-30 14:21:12,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37079 conditions, 5231 events. 2524/5231 cut-off events. For 83000/83613 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 40830 event pairs, 529 based on Foata normal form. 80/5208 useless extension candidates. Maximal degree in co-relation 36982. Up to 2224 conditions per place. [2024-01-30 14:21:12,482 INFO L140 encePairwiseOnDemand]: 52/68 looper letters, 255 selfloop transitions, 115 changer transitions 12/403 dead transitions. [2024-01-30 14:21:12,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 403 transitions, 8544 flow [2024-01-30 14:21:12,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-01-30 14:21:12,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-01-30 14:21:12,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 339 transitions. [2024-01-30 14:21:12,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3834841628959276 [2024-01-30 14:21:12,483 INFO L175 Difference]: Start difference. First operand has 383 places, 333 transitions, 7233 flow. Second operand 13 states and 339 transitions. [2024-01-30 14:21:12,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 403 transitions, 8544 flow [2024-01-30 14:21:12,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 403 transitions, 8259 flow, removed 2 selfloop flow, removed 19 redundant places. [2024-01-30 14:21:12,820 INFO L231 Difference]: Finished difference. Result has 377 places, 322 transitions, 7058 flow [2024-01-30 14:21:12,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=6950, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7058, PETRI_PLACES=377, PETRI_TRANSITIONS=322} [2024-01-30 14:21:12,820 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 305 predicate places. [2024-01-30 14:21:12,820 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 322 transitions, 7058 flow [2024-01-30 14:21:12,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:12,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:21:12,821 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] [2024-01-30 14:21:12,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-01-30 14:21:12,821 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:21:12,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:21:12,821 INFO L85 PathProgramCache]: Analyzing trace with hash -577764358, now seen corresponding path program 19 times [2024-01-30 14:21:12,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:21:12,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653357443] [2024-01-30 14:21:12,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:21:12,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:21:12,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:21:13,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:21:13,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:21:13,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653357443] [2024-01-30 14:21:13,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653357443] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:21:13,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:21:13,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-30 14:21:13,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316222830] [2024-01-30 14:21:13,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:21:13,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-30 14:21:13,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:21:13,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-30 14:21:13,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-01-30 14:21:13,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:21:13,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 322 transitions, 7058 flow. Second operand has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:13,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:21:13,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:21:13,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:21:14,191 INFO L124 PetriNetUnfolderBase]: 2509/5266 cut-off events. [2024-01-30 14:21:14,191 INFO L125 PetriNetUnfolderBase]: For 80276/80869 co-relation queries the response was YES. [2024-01-30 14:21:14,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37452 conditions, 5266 events. 2509/5266 cut-off events. For 80276/80869 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 41407 event pairs, 531 based on Foata normal form. 80/5249 useless extension candidates. Maximal degree in co-relation 37356. Up to 2234 conditions per place. [2024-01-30 14:21:14,244 INFO L140 encePairwiseOnDemand]: 52/68 looper letters, 206 selfloop transitions, 143 changer transitions 12/382 dead transitions. [2024-01-30 14:21:14,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 382 transitions, 8231 flow [2024-01-30 14:21:14,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-30 14:21:14,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-30 14:21:14,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 314 transitions. [2024-01-30 14:21:14,246 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38480392156862747 [2024-01-30 14:21:14,246 INFO L175 Difference]: Start difference. First operand has 377 places, 322 transitions, 7058 flow. Second operand 12 states and 314 transitions. [2024-01-30 14:21:14,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 382 transitions, 8231 flow [2024-01-30 14:21:14,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 382 transitions, 7818 flow, removed 9 selfloop flow, removed 21 redundant places. [2024-01-30 14:21:14,595 INFO L231 Difference]: Finished difference. Result has 368 places, 311 transitions, 6757 flow [2024-01-30 14:21:14,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=6654, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6757, PETRI_PLACES=368, PETRI_TRANSITIONS=311} [2024-01-30 14:21:14,596 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 296 predicate places. [2024-01-30 14:21:14,596 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 311 transitions, 6757 flow [2024-01-30 14:21:14,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:14,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:21:14,596 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] [2024-01-30 14:21:14,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-01-30 14:21:14,596 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:21:14,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:21:14,597 INFO L85 PathProgramCache]: Analyzing trace with hash -715127584, now seen corresponding path program 20 times [2024-01-30 14:21:14,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:21:14,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116976791] [2024-01-30 14:21:14,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:21:14,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:21:14,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-30 14:21:14,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-30 14:21:14,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-30 14:21:14,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116976791] [2024-01-30 14:21:14,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116976791] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-30 14:21:14,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-30 14:21:14,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-30 14:21:14,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626747431] [2024-01-30 14:21:14,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-30 14:21:14,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-30 14:21:14,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-30 14:21:14,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-30 14:21:14,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-01-30 14:21:14,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 68 [2024-01-30 14:21:14,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 311 transitions, 6757 flow. Second operand has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:14,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-30 14:21:14,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 68 [2024-01-30 14:21:14,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-30 14:21:15,915 INFO L124 PetriNetUnfolderBase]: 2486/5181 cut-off events. [2024-01-30 14:21:15,915 INFO L125 PetriNetUnfolderBase]: For 74677/75262 co-relation queries the response was YES. [2024-01-30 14:21:15,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36890 conditions, 5181 events. 2486/5181 cut-off events. For 74677/75262 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 40437 event pairs, 457 based on Foata normal form. 56/5134 useless extension candidates. Maximal degree in co-relation 36798. Up to 2152 conditions per place. [2024-01-30 14:21:15,971 INFO L140 encePairwiseOnDemand]: 52/68 looper letters, 181 selfloop transitions, 144 changer transitions 17/362 dead transitions. [2024-01-30 14:21:15,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 362 transitions, 7744 flow [2024-01-30 14:21:15,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-30 14:21:15,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-30 14:21:15,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 304 transitions. [2024-01-30 14:21:15,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37254901960784315 [2024-01-30 14:21:15,973 INFO L175 Difference]: Start difference. First operand has 368 places, 311 transitions, 6757 flow. Second operand 12 states and 304 transitions. [2024-01-30 14:21:15,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 362 transitions, 7744 flow [2024-01-30 14:21:16,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 362 transitions, 7319 flow, removed 9 selfloop flow, removed 27 redundant places. [2024-01-30 14:21:16,277 INFO L231 Difference]: Finished difference. Result has 350 places, 293 transitions, 6370 flow [2024-01-30 14:21:16,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=6270, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6370, PETRI_PLACES=350, PETRI_TRANSITIONS=293} [2024-01-30 14:21:16,278 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 278 predicate places. [2024-01-30 14:21:16,278 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 293 transitions, 6370 flow [2024-01-30 14:21:16,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-30 14:21:16,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-30 14:21:16,278 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] [2024-01-30 14:21:16,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-01-30 14:21:16,279 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 54 more)] === [2024-01-30 14:21:16,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-30 14:21:16,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1922468118, now seen corresponding path program 1 times [2024-01-30 14:21:16,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-30 14:21:16,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633765168] [2024-01-30 14:21:16,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-30 14:21:16,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-30 14:21:16,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-30 14:21:16,289 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-30 14:21:16,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-30 14:21:16,319 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-30 14:21:16,319 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-30 14:21:16,320 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (56 of 57 remaining) [2024-01-30 14:21:16,321 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT (55 of 57 remaining) [2024-01-30 14:21:16,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT (54 of 57 remaining) [2024-01-30 14:21:16,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (53 of 57 remaining) [2024-01-30 14:21:16,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err3ASSERT_VIOLATIONWITNESS_INVARIANT (52 of 57 remaining) [2024-01-30 14:21:16,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT (51 of 57 remaining) [2024-01-30 14:21:16,322 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err5ASSERT_VIOLATIONWITNESS_INVARIANT (50 of 57 remaining) [2024-01-30 14:21:16,323 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err6ASSERT_VIOLATIONWITNESS_INVARIANT (49 of 57 remaining) [2024-01-30 14:21:16,323 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT (48 of 57 remaining) [2024-01-30 14:21:16,323 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err8ASSERT_VIOLATIONWITNESS_INVARIANT (47 of 57 remaining) [2024-01-30 14:21:16,323 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT (46 of 57 remaining) [2024-01-30 14:21:16,323 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err10ASSERT_VIOLATIONWITNESS_INVARIANT (45 of 57 remaining) [2024-01-30 14:21:16,323 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err11ASSERT_VIOLATIONWITNESS_INVARIANT (44 of 57 remaining) [2024-01-30 14:21:16,324 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (43 of 57 remaining) [2024-01-30 14:21:16,324 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (42 of 57 remaining) [2024-01-30 14:21:16,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (41 of 57 remaining) [2024-01-30 14:21:16,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (40 of 57 remaining) [2024-01-30 14:21:16,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (39 of 57 remaining) [2024-01-30 14:21:16,340 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 57 remaining) [2024-01-30 14:21:16,341 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 57 remaining) [2024-01-30 14:21:16,341 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 57 remaining) [2024-01-30 14:21:16,341 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 57 remaining) [2024-01-30 14:21:16,341 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 57 remaining) [2024-01-30 14:21:16,341 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 57 remaining) [2024-01-30 14:21:16,341 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 57 remaining) [2024-01-30 14:21:16,341 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 57 remaining) [2024-01-30 14:21:16,341 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 57 remaining) [2024-01-30 14:21:16,342 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 57 remaining) [2024-01-30 14:21:16,342 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 57 remaining) [2024-01-30 14:21:16,342 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 57 remaining) [2024-01-30 14:21:16,342 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (26 of 57 remaining) [2024-01-30 14:21:16,342 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 57 remaining) [2024-01-30 14:21:16,342 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 57 remaining) [2024-01-30 14:21:16,342 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 57 remaining) [2024-01-30 14:21:16,342 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 57 remaining) [2024-01-30 14:21:16,343 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 57 remaining) [2024-01-30 14:21:16,343 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err3ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 57 remaining) [2024-01-30 14:21:16,343 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 57 remaining) [2024-01-30 14:21:16,343 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err5ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 57 remaining) [2024-01-30 14:21:16,343 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err6ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 57 remaining) [2024-01-30 14:21:16,343 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 57 remaining) [2024-01-30 14:21:16,343 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err8ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 57 remaining) [2024-01-30 14:21:16,343 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 57 remaining) [2024-01-30 14:21:16,344 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err10ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 57 remaining) [2024-01-30 14:21:16,344 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err11ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 57 remaining) [2024-01-30 14:21:16,344 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 57 remaining) [2024-01-30 14:21:16,344 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 57 remaining) [2024-01-30 14:21:16,344 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 57 remaining) [2024-01-30 14:21:16,344 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 57 remaining) [2024-01-30 14:21:16,344 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 57 remaining) [2024-01-30 14:21:16,345 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 57 remaining) [2024-01-30 14:21:16,345 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 57 remaining) [2024-01-30 14:21:16,345 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 57 remaining) [2024-01-30 14:21:16,345 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 57 remaining) [2024-01-30 14:21:16,345 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 57 remaining) [2024-01-30 14:21:16,345 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 57 remaining) [2024-01-30 14:21:16,345 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 57 remaining) [2024-01-30 14:21:16,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-01-30 14:21:16,346 INFO L445 BasicCegarLoop]: Path program histogram: [20, 20, 10, 10, 10, 9, 8, 6, 6, 4, 4, 4, 4, 4, 4, 4, 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] [2024-01-30 14:21:16,351 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-30 14:21:16,351 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-30 14:21:16,379 INFO L503 ceAbstractionStarter]: Automizer considered 30 witness invariants [2024-01-30 14:21:16,379 INFO L504 ceAbstractionStarter]: WitnessConsidered=30 [2024-01-30 14:21:16,380 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.01 02:21:16 BasicIcfg [2024-01-30 14:21:16,380 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-30 14:21:16,380 INFO L158 Benchmark]: Toolchain (without parser) took 241703.80ms. Allocated memory was 222.3MB in the beginning and 3.0GB in the end (delta: 2.8GB). Free memory was 188.6MB in the beginning and 2.5GB in the end (delta: -2.4GB). Peak memory consumption was 451.9MB. Max. memory is 16.1GB. [2024-01-30 14:21:16,380 INFO L158 Benchmark]: Witness Parser took 0.16ms. Allocated memory is still 142.6MB. Free memory is still 96.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-30 14:21:16,380 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 142.6MB. Free memory is still 103.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-30 14:21:16,380 INFO L158 Benchmark]: CACSL2BoogieTranslator took 647.94ms. Allocated memory is still 222.3MB. Free memory was 188.6MB in the beginning and 159.3MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-01-30 14:21:16,381 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.23ms. Allocated memory is still 222.3MB. Free memory was 159.3MB in the beginning and 157.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-30 14:21:16,381 INFO L158 Benchmark]: Boogie Preprocessor took 77.81ms. Allocated memory is still 222.3MB. Free memory was 156.1MB in the beginning and 154.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-30 14:21:16,381 INFO L158 Benchmark]: RCFGBuilder took 726.55ms. Allocated memory is still 222.3MB. Free memory was 154.0MB in the beginning and 74.3MB in the end (delta: 79.7MB). Peak memory consumption was 79.7MB. Max. memory is 16.1GB. [2024-01-30 14:21:16,381 INFO L158 Benchmark]: TraceAbstraction took 240196.34ms. Allocated memory was 222.3MB in the beginning and 3.0GB in the end (delta: 2.8GB). Free memory was 74.3MB in the beginning and 2.5GB in the end (delta: -2.5GB). Peak memory consumption was 336.6MB. Max. memory is 16.1GB. [2024-01-30 14:21:16,382 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.16ms. Allocated memory is still 142.6MB. Free memory is still 96.6MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.16ms. Allocated memory is still 142.6MB. Free memory is still 103.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 647.94ms. Allocated memory is still 222.3MB. Free memory was 188.6MB in the beginning and 159.3MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.23ms. Allocated memory is still 222.3MB. Free memory was 159.3MB in the beginning and 157.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 77.81ms. Allocated memory is still 222.3MB. Free memory was 156.1MB in the beginning and 154.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 726.55ms. Allocated memory is still 222.3MB. Free memory was 154.0MB in the beginning and 74.3MB in the end (delta: 79.7MB). Peak memory consumption was 79.7MB. Max. memory is 16.1GB. * TraceAbstraction took 240196.34ms. Allocated memory was 222.3MB in the beginning and 3.0GB in the end (delta: 2.8GB). Free memory was 74.3MB in the beginning and 2.5GB in the end (delta: -2.5GB). Peak memory consumption was 336.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 771]: invariant of correctness witness can be violated invariant of correctness witness can be violated We found a FailurePath: [L708] 0 int __unbuffered_cnt = 0; [L710] 0 int __unbuffered_p0_EAX = 0; [L712] 0 int __unbuffered_p1_EAX = 0; [L713] 0 _Bool main$tmp_guard0; [L714] 0 _Bool main$tmp_guard1; [L716] 0 int x = 0; [L718] 0 int y = 0; [L760] 0 pthread_t t1925; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, main$tmp_guard0=0, main$tmp_guard1=0, t1925={5:0}, x=0, y=0] [L761] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_cnt],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]]]]] [L761] FCALL, FORK 0 pthread_create(&t1925, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t1925={5:0}, x=0, y=0] [L762] 0 pthread_t t1926; [L721] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0] [L763] FCALL, FORK 0 pthread_create(&t1926, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t1925={5:0}, t1926={3:0}, x=0, y=0] [L722] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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 __unbuffered_p0_EAX = y [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[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$tmp_guard1=0, x=0, y=0] [L724] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0] [L725] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] [L725] 1 x = 1 [L726] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=0] [L727] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=0] [L728] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=0] [L729] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=0] [L736] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=0] [L737] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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]]]]]] [L737] 2 __unbuffered_p1_EAX = x [L738] 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$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=0] [L739] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=0] [L740] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] [L740] 2 y = 1 [L741] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L742] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L743] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L744] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L730] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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]]]]]] [L730] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L731] 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$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=1, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L745] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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]]]]]] [L745] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L746] 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$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=2, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L765] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] [L765] 0 main$tmp_guard0 = __unbuffered_cnt == 2 [L766] 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=0, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t1925={5:0}, t1926={3:0}, x=1, y=1] [L767] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L767] RET 0 assume_abort_if_not(main$tmp_guard0) [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]]]]]] VAL [__unbuffered_cnt=2, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t1925={5:0}, t1926={3:0}, x=1, y=1] [L771] 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[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=0, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t1925={5:0}, t1926={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: 736]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 737]: 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: 761]: 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: 766]: 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: 772]: 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: 763]: 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: 761]: 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, 116 locations, 57 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: 240.0s, OverallIterations: 169, TraceHistogramMax: 1, PathProgramHistogramMax: 20, EmptinessCheckTime: 0.0s, AutomataDifference: 200.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14630 SdHoareTripleChecker+Valid, 32.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13362 mSDsluCounter, 3719 SdHoareTripleChecker+Invalid, 26.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3138 mSDsCounter, 2426 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 48807 IncrementalHoareTripleChecker+Invalid, 51233 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2426 mSolverCounterUnsat, 581 mSDtfsCounter, 48807 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1540 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1533 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1691 ImplicationChecksByTransitivity, 16.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13093occurred in iteration=140, InterpolantAutomatonStates: 1480, 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, 0.5s SatisfiabilityAnalysisTime, 36.9s InterpolantComputationTime, 3186 NumberOfCodeBlocks, 3186 NumberOfCodeBlocksAsserted, 169 NumberOfCheckSat, 2990 ConstructedInterpolants, 0 QuantifiedInterpolants, 78905 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 168 InterpolantComputations, 168 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! [2024-01-30 14:21:16,443 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with 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