./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.2024-01-24_13-31-21.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 d8006e4b 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.2024-01-24_13-31-21.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-d8006e4-m [2024-02-05 10:27:12,832 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-05 10:27:12,885 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-05 10:27:12,893 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-05 10:27:12,893 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-05 10:27:12,922 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-05 10:27:12,923 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-05 10:27:12,923 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-05 10:27:12,924 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-05 10:27:12,925 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-05 10:27:12,925 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-05 10:27:12,925 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-05 10:27:12,926 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-05 10:27:12,926 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-05 10:27:12,926 INFO L153 SettingsManager]: * Use SBE=true [2024-02-05 10:27:12,927 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-05 10:27:12,927 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-05 10:27:12,927 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-05 10:27:12,928 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-05 10:27:12,928 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-05 10:27:12,928 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-05 10:27:12,928 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-05 10:27:12,929 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-05 10:27:12,929 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-05 10:27:12,929 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-05 10:27:12,929 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-05 10:27:12,930 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-05 10:27:12,930 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-05 10:27:12,930 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-05 10:27:12,930 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-05 10:27:12,931 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-05 10:27:12,931 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-05 10:27:12,931 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-05 10:27:12,931 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-05 10:27:12,932 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-05 10:27:12,932 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-05 10:27:12,932 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-05 10:27:12,932 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-05 10:27:12,933 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-05 10:27:12,933 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-05 10:27:12,933 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-05 10:27:12,933 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-05 10:27:12,934 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-05 10:27:12,934 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-05 10:27:13,161 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-05 10:27:13,180 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-05 10:27:13,183 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-05 10:27:13,184 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-05 10:27:13,185 INFO L274 PluginConnector]: CDTParser initialized [2024-02-05 10:27:13,186 INFO L431 ainManager$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 [2024-02-05 10:27:14,245 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-05 10:27:14,484 INFO L384 CDTParser]: Found 1 translation units. [2024-02-05 10:27:14,485 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 [2024-02-05 10:27:14,499 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e89d1629d/9475e040171d4e16b9c62b8826de4b3f/FLAG8eeb014bd [2024-02-05 10:27:14,513 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e89d1629d/9475e040171d4e16b9c62b8826de4b3f [2024-02-05 10:27:14,515 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-05 10:27:14,515 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-05 10:27:14,516 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-01-24_13-31-21.files/SV-COMP24_unreach-call/safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.yml/witness.yml [2024-02-05 10:27:14,694 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-05 10:27:14,695 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-05 10:27:14,696 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-05 10:27:14,696 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-05 10:27:14,700 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-05 10:27:14,700 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 10:27:14" (1/2) ... [2024-02-05 10:27:14,701 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73f715ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:27:14, skipping insertion in model container [2024-02-05 10:27:14,702 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 10:27:14" (1/2) ... [2024-02-05 10:27:14,703 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@39a7ffa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:27:14, skipping insertion in model container [2024-02-05 10:27:14,703 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 05.02 10:27:14" (2/2) ... [2024-02-05 10:27:14,704 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73f715ed and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:27:14, skipping insertion in model container [2024-02-05 10:27:14,704 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 05.02 10:27:14" (2/2) ... [2024-02-05 10:27:14,704 INFO L86 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-05 10:27:14,973 INFO L99 nessWitnessExtractor]: Found the following entries in the witness: [2024-02-05 10:27:14,975 INFO L101 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) [2024-02-05 10:27:14,975 INFO L101 nessWitnessExtractor]: Location invariant before [L18-L18] ((0 <= expression) && (expression <= 1)) && (expression == 0 || expression == 1) [2024-02-05 10:27:14,975 INFO L101 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) [2024-02-05 10:27:14,975 INFO L101 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) [2024-02-05 10:27:14,976 INFO L101 nessWitnessExtractor]: Location invariant before [L736-L736] (unsigned long )arg == 0UL [2024-02-05 10:27:14,976 INFO L101 nessWitnessExtractor]: Location invariant before [L732-L732] (unsigned long )arg == 0UL [2024-02-05 10:27:14,976 INFO L101 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) [2024-02-05 10:27:14,977 INFO L101 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) [2024-02-05 10:27:14,977 INFO L101 nessWitnessExtractor]: Location invariant after [L18-L18] expression == 0 [2024-02-05 10:27:14,977 INFO L101 nessWitnessExtractor]: Location invariant before [L739-L739] (unsigned long )arg == 0UL [2024-02-05 10:27:14,977 INFO L101 nessWitnessExtractor]: Location invariant before [L729-L729] (unsigned long )arg == 0UL [2024-02-05 10:27:14,977 INFO L101 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) [2024-02-05 10:27:14,977 INFO L101 nessWitnessExtractor]: Location invariant before [L724-L724] (unsigned long )arg == 0UL [2024-02-05 10:27:14,978 INFO L101 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) [2024-02-05 10:27:14,978 INFO L101 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) [2024-02-05 10:27:14,978 INFO L101 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) [2024-02-05 10:27:14,978 INFO L101 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) [2024-02-05 10:27:14,978 INFO L101 nessWitnessExtractor]: Location invariant before [L18-L18] expression == 0 [2024-02-05 10:27:14,978 INFO L101 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) [2024-02-05 10:27:14,978 INFO L101 nessWitnessExtractor]: Location invariant after [L18-L18] expression == 1 [2024-02-05 10:27:14,979 INFO L101 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) [2024-02-05 10:27:14,979 INFO L101 nessWitnessExtractor]: Location invariant after [L18-L18] expression == 1 [2024-02-05 10:27:14,979 INFO L101 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) [2024-02-05 10:27:14,979 INFO L101 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) [2024-02-05 10:27:14,979 INFO L101 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) [2024-02-05 10:27:14,980 INFO L101 nessWitnessExtractor]: Location invariant before [L721-L721] (unsigned long )arg == 0UL [2024-02-05 10:27:14,980 INFO L101 nessWitnessExtractor]: Location invariant before [L747-L747] (unsigned long )arg == 0UL [2024-02-05 10:27:14,980 INFO L101 nessWitnessExtractor]: Location invariant before [L727-L727] (unsigned long )arg == 0UL [2024-02-05 10:27:14,980 INFO L101 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) [2024-02-05 10:27:14,980 INFO L101 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) [2024-02-05 10:27:14,980 INFO L101 nessWitnessExtractor]: Location invariant before [L742-L742] (unsigned long )arg == 0UL [2024-02-05 10:27:14,980 INFO L101 nessWitnessExtractor]: Location invariant before [L18-L18] expression == 1 [2024-02-05 10:27:14,981 INFO L101 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) [2024-02-05 10:27:14,981 INFO L101 nessWitnessExtractor]: Location invariant before [L744-L744] (unsigned long )arg == 0UL [2024-02-05 10:27:14,981 INFO L101 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) [2024-02-05 10:27:14,981 INFO L101 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) [2024-02-05 10:27:15,016 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-02-05 10:27:15,182 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] [2024-02-05 10:27:15,335 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-05 10:27:15,343 INFO L204 MainTranslator]: Completed pre-run Start Parsing Local [2024-02-05 10:27:15,373 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] Start Parsing Local Start Parsing Local [2024-02-05 10:27:15,374 WARN L424 MainDispatcher]: Unable to annotate ; with a witness entry Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-05 10:27:15,461 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-05 10:27:15,487 INFO L208 MainTranslator]: Completed translation [2024-02-05 10:27:15,487 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:27:15 WrapperNode [2024-02-05 10:27:15,487 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-05 10:27:15,488 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-05 10:27:15,488 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-05 10:27:15,489 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-05 10:27:15,494 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:27:15" (1/1) ... [2024-02-05 10:27:15,523 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:27:15" (1/1) ... [2024-02-05 10:27:15,556 INFO L138 Inliner]: procedures = 175, calls = 40, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 67 [2024-02-05 10:27:15,556 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-05 10:27:15,557 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-05 10:27:15,557 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-05 10:27:15,558 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-05 10:27:15,566 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:27:15" (1/1) ... [2024-02-05 10:27:15,567 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:27:15" (1/1) ... [2024-02-05 10:27:15,578 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:27:15" (1/1) ... [2024-02-05 10:27:15,603 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]. [2024-02-05 10:27:15,604 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:27:15" (1/1) ... [2024-02-05 10:27:15,604 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:27:15" (1/1) ... [2024-02-05 10:27:15,617 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:27:15" (1/1) ... [2024-02-05 10:27:15,624 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:27:15" (1/1) ... [2024-02-05 10:27:15,626 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:27:15" (1/1) ... [2024-02-05 10:27:15,630 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:27:15" (1/1) ... [2024-02-05 10:27:15,633 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-05 10:27:15,637 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-05 10:27:15,637 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-05 10:27:15,637 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-05 10:27:15,638 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:27:15" (1/1) ... [2024-02-05 10:27:15,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-05 10:27:15,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-05 10:27:15,676 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-02-05 10:27:15,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-02-05 10:27:15,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-05 10:27:15,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-05 10:27:15,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-05 10:27:15,711 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-05 10:27:15,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-05 10:27:15,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-05 10:27:15,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-05 10:27:15,712 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-02-05 10:27:15,712 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-02-05 10:27:15,712 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-02-05 10:27:15,712 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-02-05 10:27:15,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-05 10:27:15,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-05 10:27:15,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-05 10:27:15,713 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-05 10:27:15,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-05 10:27:15,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-05 10:27:15,714 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-05 10:27:15,844 INFO L244 CfgBuilder]: Building ICFG [2024-02-05 10:27:15,847 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-05 10:27:16,178 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-05 10:27:16,179 INFO L293 CfgBuilder]: Performing block encoding [2024-02-05 10:27:16,318 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-05 10:27:16,318 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-02-05 10:27:16,321 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.02 10:27:16 BoogieIcfgContainer [2024-02-05 10:27:16,321 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-05 10:27:16,323 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-05 10:27:16,323 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-05 10:27:16,326 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-05 10:27:16,326 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 10:27:14" (1/4) ... [2024-02-05 10:27:16,327 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fb5c665 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 10:27:16, skipping insertion in model container [2024-02-05 10:27:16,327 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 05.02 10:27:14" (2/4) ... [2024-02-05 10:27:16,327 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fb5c665 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 05.02 10:27:16, skipping insertion in model container [2024-02-05 10:27:16,327 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 05.02 10:27:15" (3/4) ... [2024-02-05 10:27:16,328 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fb5c665 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 05.02 10:27:16, skipping insertion in model container [2024-02-05 10:27:16,329 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.02 10:27:16" (4/4) ... [2024-02-05 10:27:16,330 INFO L112 eAbstractionObserver]: Analyzing ICFG safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-02-05 10:27:16,343 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-05 10:27:16,343 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 34 error locations. [2024-02-05 10:27:16,343 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-05 10:27:16,407 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-02-05 10:27:16,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 73 transitions, 154 flow [2024-02-05 10:27:16,478 INFO L124 PetriNetUnfolderBase]: 1/71 cut-off events. [2024-02-05 10:27:16,478 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-05 10:27:16,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 71 events. 1/71 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 242 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 69. Up to 2 conditions per place. [2024-02-05 10:27:16,482 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 73 transitions, 154 flow [2024-02-05 10:27:16,508 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 71 transitions, 148 flow [2024-02-05 10:27:16,520 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-05 10:27:16,526 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;@1818023e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-05 10:27:16,526 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2024-02-05 10:27:16,530 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-05 10:27:16,530 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-02-05 10:27:16,530 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-05 10:27:16,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:27:16,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-02-05 10:27:16,532 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:27:16,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:27:16,537 INFO L85 PathProgramCache]: Analyzing trace with hash 10181, now seen corresponding path program 1 times [2024-02-05 10:27:16,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:27:16,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662392039] [2024-02-05 10:27:16,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:27:16,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:27:16,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:27:16,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:27:16,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:27:16,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662392039] [2024-02-05 10:27:16,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662392039] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:27:16,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:27:16,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-05 10:27:16,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148390406] [2024-02-05 10:27:16,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:27:16,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-05 10:27:16,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:27:16,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-05 10:27:16,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-05 10:27:16,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 73 [2024-02-05 10:27:16,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 71 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:16,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:27:16,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 73 [2024-02-05 10:27:16,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:27:17,435 INFO L124 PetriNetUnfolderBase]: 1643/3614 cut-off events. [2024-02-05 10:27:17,435 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-02-05 10:27:17,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6277 conditions, 3614 events. 1643/3614 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 30357 event pairs, 1001 based on Foata normal form. 100/2309 useless extension candidates. Maximal degree in co-relation 6265. Up to 2517 conditions per place. [2024-02-05 10:27:17,455 INFO L140 encePairwiseOnDemand]: 58/73 looper letters, 42 selfloop transitions, 3 changer transitions 0/73 dead transitions. [2024-02-05 10:27:17,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 73 transitions, 245 flow [2024-02-05 10:27:17,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-05 10:27:17,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-05 10:27:17,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 152 transitions. [2024-02-05 10:27:17,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6940639269406392 [2024-02-05 10:27:17,466 INFO L175 Difference]: Start difference. First operand has 77 places, 71 transitions, 148 flow. Second operand 3 states and 152 transitions. [2024-02-05 10:27:17,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 73 transitions, 245 flow [2024-02-05 10:27:17,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 73 transitions, 242 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:27:17,471 INFO L231 Difference]: Finished difference. Result has 69 places, 63 transitions, 147 flow [2024-02-05 10:27:17,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=147, PETRI_PLACES=69, PETRI_TRANSITIONS=63} [2024-02-05 10:27:17,474 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -8 predicate places. [2024-02-05 10:27:17,474 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 63 transitions, 147 flow [2024-02-05 10:27:17,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:17,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:27:17,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-05 10:27:17,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-05 10:27:17,475 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:27:17,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:27:17,476 INFO L85 PathProgramCache]: Analyzing trace with hash 303701841, now seen corresponding path program 1 times [2024-02-05 10:27:17,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:27:17,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633351589] [2024-02-05 10:27:17,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:27:17,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:27:17,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:27:17,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:27:17,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:27:17,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633351589] [2024-02-05 10:27:17,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633351589] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:27:17,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:27:17,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-05 10:27:17,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202522837] [2024-02-05 10:27:17,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:27:17,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-05 10:27:17,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:27:17,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-05 10:27:17,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-05 10:27:17,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 73 [2024-02-05 10:27:17,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 63 transitions, 147 flow. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:17,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:27:17,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 73 [2024-02-05 10:27:17,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:27:18,062 INFO L124 PetriNetUnfolderBase]: 1780/3778 cut-off events. [2024-02-05 10:27:18,062 INFO L125 PetriNetUnfolderBase]: For 286/286 co-relation queries the response was YES. [2024-02-05 10:27:18,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7031 conditions, 3778 events. 1780/3778 cut-off events. For 286/286 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 31252 event pairs, 980 based on Foata normal form. 384/3027 useless extension candidates. Maximal degree in co-relation 7018. Up to 2714 conditions per place. [2024-02-05 10:27:18,081 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 55 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2024-02-05 10:27:18,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 79 transitions, 302 flow [2024-02-05 10:27:18,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-05 10:27:18,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-05 10:27:18,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 160 transitions. [2024-02-05 10:27:18,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.547945205479452 [2024-02-05 10:27:18,083 INFO L175 Difference]: Start difference. First operand has 69 places, 63 transitions, 147 flow. Second operand 4 states and 160 transitions. [2024-02-05 10:27:18,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 79 transitions, 302 flow [2024-02-05 10:27:18,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 79 transitions, 298 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-05 10:27:18,085 INFO L231 Difference]: Finished difference. Result has 66 places, 58 transitions, 138 flow [2024-02-05 10:27:18,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=138, PETRI_PLACES=66, PETRI_TRANSITIONS=58} [2024-02-05 10:27:18,086 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -11 predicate places. [2024-02-05 10:27:18,086 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 58 transitions, 138 flow [2024-02-05 10:27:18,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:18,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:27:18,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-02-05 10:27:18,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-05 10:27:18,087 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:27:18,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:27:18,087 INFO L85 PathProgramCache]: Analyzing trace with hash 824822840, now seen corresponding path program 1 times [2024-02-05 10:27:18,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:27:18,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100331363] [2024-02-05 10:27:18,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:27:18,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:27:18,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:27:18,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:27:18,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:27:18,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100331363] [2024-02-05 10:27:18,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100331363] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:27:18,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:27:18,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-05 10:27:18,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459980773] [2024-02-05 10:27:18,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:27:18,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-05 10:27:18,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:27:18,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-05 10:27:18,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-02-05 10:27:18,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 73 [2024-02-05 10:27:18,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 58 transitions, 138 flow. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:18,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:27:18,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 73 [2024-02-05 10:27:18,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:27:18,788 INFO L124 PetriNetUnfolderBase]: 2412/5103 cut-off events. [2024-02-05 10:27:18,788 INFO L125 PetriNetUnfolderBase]: For 430/430 co-relation queries the response was YES. [2024-02-05 10:27:18,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9486 conditions, 5103 events. 2412/5103 cut-off events. For 430/430 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 42191 event pairs, 1501 based on Foata normal form. 14/3649 useless extension candidates. Maximal degree in co-relation 9472. Up to 3689 conditions per place. [2024-02-05 10:27:18,814 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 54 selfloop transitions, 5 changer transitions 0/77 dead transitions. [2024-02-05 10:27:18,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 77 transitions, 302 flow [2024-02-05 10:27:18,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-05 10:27:18,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-05 10:27:18,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 141 transitions. [2024-02-05 10:27:18,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4828767123287671 [2024-02-05 10:27:18,816 INFO L175 Difference]: Start difference. First operand has 66 places, 58 transitions, 138 flow. Second operand 4 states and 141 transitions. [2024-02-05 10:27:18,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 77 transitions, 302 flow [2024-02-05 10:27:18,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 77 transitions, 298 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:27:18,818 INFO L231 Difference]: Finished difference. Result has 69 places, 60 transitions, 163 flow [2024-02-05 10:27:18,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=163, PETRI_PLACES=69, PETRI_TRANSITIONS=60} [2024-02-05 10:27:18,819 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -8 predicate places. [2024-02-05 10:27:18,819 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 60 transitions, 163 flow [2024-02-05 10:27:18,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:18,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:27:18,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:27:18,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-05 10:27:18,820 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:27:18,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:27:18,820 INFO L85 PathProgramCache]: Analyzing trace with hash -201206786, now seen corresponding path program 1 times [2024-02-05 10:27:18,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:27:18,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134690306] [2024-02-05 10:27:18,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:27:18,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:27:18,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:27:18,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:27:18,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:27:18,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134690306] [2024-02-05 10:27:18,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134690306] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:27:18,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:27:18,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-05 10:27:18,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436211711] [2024-02-05 10:27:18,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:27:18,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-05 10:27:18,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:27:18,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-05 10:27:18,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-05 10:27:18,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 73 [2024-02-05 10:27:18,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 60 transitions, 163 flow. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:18,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:27:18,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 73 [2024-02-05 10:27:18,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:27:19,245 INFO L124 PetriNetUnfolderBase]: 1779/3476 cut-off events. [2024-02-05 10:27:19,245 INFO L125 PetriNetUnfolderBase]: For 492/506 co-relation queries the response was YES. [2024-02-05 10:27:19,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6922 conditions, 3476 events. 1779/3476 cut-off events. For 492/506 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 27113 event pairs, 387 based on Foata normal form. 400/3000 useless extension candidates. Maximal degree in co-relation 6906. Up to 2722 conditions per place. [2024-02-05 10:27:19,262 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 59 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2024-02-05 10:27:19,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 79 transitions, 337 flow [2024-02-05 10:27:19,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-05 10:27:19,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-05 10:27:19,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 163 transitions. [2024-02-05 10:27:19,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5582191780821918 [2024-02-05 10:27:19,264 INFO L175 Difference]: Start difference. First operand has 69 places, 60 transitions, 163 flow. Second operand 4 states and 163 transitions. [2024-02-05 10:27:19,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 79 transitions, 337 flow [2024-02-05 10:27:19,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 79 transitions, 325 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:27:19,265 INFO L231 Difference]: Finished difference. Result has 65 places, 55 transitions, 149 flow [2024-02-05 10:27:19,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=149, PETRI_PLACES=65, PETRI_TRANSITIONS=55} [2024-02-05 10:27:19,266 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -12 predicate places. [2024-02-05 10:27:19,267 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 55 transitions, 149 flow [2024-02-05 10:27:19,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:19,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:27:19,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:27:19,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-05 10:27:19,267 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:27:19,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:27:19,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1942442687, now seen corresponding path program 1 times [2024-02-05 10:27:19,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:27:19,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852767539] [2024-02-05 10:27:19,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:27:19,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:27:19,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:27:19,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:27:19,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:27:19,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852767539] [2024-02-05 10:27:19,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852767539] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:27:19,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:27:19,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-05 10:27:19,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247391781] [2024-02-05 10:27:19,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:27:19,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-05 10:27:19,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:27:19,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-05 10:27:19,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-02-05 10:27:19,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 73 [2024-02-05 10:27:19,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 55 transitions, 149 flow. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:19,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:27:19,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 73 [2024-02-05 10:27:19,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:27:19,878 INFO L124 PetriNetUnfolderBase]: 2427/5052 cut-off events. [2024-02-05 10:27:19,878 INFO L125 PetriNetUnfolderBase]: For 630/644 co-relation queries the response was YES. [2024-02-05 10:27:19,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9707 conditions, 5052 events. 2427/5052 cut-off events. For 630/644 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 40300 event pairs, 1713 based on Foata normal form. 20/3777 useless extension candidates. Maximal degree in co-relation 9692. Up to 3835 conditions per place. [2024-02-05 10:27:19,898 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 48 selfloop transitions, 6 changer transitions 0/68 dead transitions. [2024-02-05 10:27:19,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 68 transitions, 292 flow [2024-02-05 10:27:19,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-05 10:27:19,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-05 10:27:19,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2024-02-05 10:27:19,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4623287671232877 [2024-02-05 10:27:19,900 INFO L175 Difference]: Start difference. First operand has 65 places, 55 transitions, 149 flow. Second operand 4 states and 135 transitions. [2024-02-05 10:27:19,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 68 transitions, 292 flow [2024-02-05 10:27:19,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 68 transitions, 286 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:27:19,902 INFO L231 Difference]: Finished difference. Result has 68 places, 57 transitions, 178 flow [2024-02-05 10:27:19,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=178, PETRI_PLACES=68, PETRI_TRANSITIONS=57} [2024-02-05 10:27:19,902 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -9 predicate places. [2024-02-05 10:27:19,903 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 57 transitions, 178 flow [2024-02-05 10:27:19,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:19,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:27:19,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:27:19,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-05 10:27:19,903 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:27:19,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:27:19,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1288565090, now seen corresponding path program 1 times [2024-02-05 10:27:19,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:27:19,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118754344] [2024-02-05 10:27:19,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:27:19,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:27:19,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:27:20,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:27:20,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:27:20,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118754344] [2024-02-05 10:27:20,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118754344] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:27:20,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:27:20,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-05 10:27:20,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532255005] [2024-02-05 10:27:20,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:27:20,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-05 10:27:20,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:27:20,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-05 10:27:20,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-05 10:27:20,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:27:20,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 57 transitions, 178 flow. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:20,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:27:20,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:27:20,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:27:20,588 INFO L124 PetriNetUnfolderBase]: 2169/4244 cut-off events. [2024-02-05 10:27:20,589 INFO L125 PetriNetUnfolderBase]: For 747/755 co-relation queries the response was YES. [2024-02-05 10:27:20,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8667 conditions, 4244 events. 2169/4244 cut-off events. For 747/755 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 32246 event pairs, 1464 based on Foata normal form. 32/3242 useless extension candidates. Maximal degree in co-relation 8649. Up to 3361 conditions per place. [2024-02-05 10:27:20,604 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 63 selfloop transitions, 10 changer transitions 0/87 dead transitions. [2024-02-05 10:27:20,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 87 transitions, 405 flow [2024-02-05 10:27:20,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-05 10:27:20,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-05 10:27:20,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 198 transitions. [2024-02-05 10:27:20,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520547945205479 [2024-02-05 10:27:20,606 INFO L175 Difference]: Start difference. First operand has 68 places, 57 transitions, 178 flow. Second operand 6 states and 198 transitions. [2024-02-05 10:27:20,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 87 transitions, 405 flow [2024-02-05 10:27:20,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 87 transitions, 399 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-05 10:27:20,608 INFO L231 Difference]: Finished difference. Result has 76 places, 65 transitions, 250 flow [2024-02-05 10:27:20,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=250, PETRI_PLACES=76, PETRI_TRANSITIONS=65} [2024-02-05 10:27:20,609 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -1 predicate places. [2024-02-05 10:27:20,609 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 65 transitions, 250 flow [2024-02-05 10:27:20,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:20,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:27:20,610 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:27:20,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-05 10:27:20,610 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:27:20,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:27:20,611 INFO L85 PathProgramCache]: Analyzing trace with hash 907502443, now seen corresponding path program 1 times [2024-02-05 10:27:20,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:27:20,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067167164] [2024-02-05 10:27:20,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:27:20,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:27:20,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:27:20,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:27:20,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:27:20,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067167164] [2024-02-05 10:27:20,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067167164] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:27:20,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:27:20,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-05 10:27:20,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236249898] [2024-02-05 10:27:20,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:27:20,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-05 10:27:20,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:27:20,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-05 10:27:20,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-02-05 10:27:20,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-05 10:27:20,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 65 transitions, 250 flow. Second operand has 6 states, 6 states have (on average 32.5) internal successors, (195), 6 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:20,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:27:20,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-05 10:27:20,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:27:21,142 INFO L124 PetriNetUnfolderBase]: 1344/2885 cut-off events. [2024-02-05 10:27:21,142 INFO L125 PetriNetUnfolderBase]: For 1085/1093 co-relation queries the response was YES. [2024-02-05 10:27:21,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6221 conditions, 2885 events. 1344/2885 cut-off events. For 1085/1093 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 22280 event pairs, 990 based on Foata normal form. 32/2266 useless extension candidates. Maximal degree in co-relation 6198. Up to 2127 conditions per place. [2024-02-05 10:27:21,155 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 51 selfloop transitions, 7 changer transitions 0/79 dead transitions. [2024-02-05 10:27:21,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 79 transitions, 407 flow [2024-02-05 10:27:21,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-05 10:27:21,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-05 10:27:21,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 174 transitions. [2024-02-05 10:27:21,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5958904109589042 [2024-02-05 10:27:21,157 INFO L175 Difference]: Start difference. First operand has 76 places, 65 transitions, 250 flow. Second operand 4 states and 174 transitions. [2024-02-05 10:27:21,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 79 transitions, 407 flow [2024-02-05 10:27:21,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 79 transitions, 407 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-05 10:27:21,160 INFO L231 Difference]: Finished difference. Result has 81 places, 69 transitions, 300 flow [2024-02-05 10:27:21,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=300, PETRI_PLACES=81, PETRI_TRANSITIONS=69} [2024-02-05 10:27:21,160 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 4 predicate places. [2024-02-05 10:27:21,161 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 69 transitions, 300 flow [2024-02-05 10:27:21,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 32.5) internal successors, (195), 6 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:21,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:27:21,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:27:21,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-05 10:27:21,161 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:27:21,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:27:21,162 INFO L85 PathProgramCache]: Analyzing trace with hash 980523175, now seen corresponding path program 1 times [2024-02-05 10:27:21,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:27:21,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703431505] [2024-02-05 10:27:21,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:27:21,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:27:21,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:27:21,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:27:21,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:27:21,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703431505] [2024-02-05 10:27:21,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703431505] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:27:21,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:27:21,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-05 10:27:21,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028170461] [2024-02-05 10:27:21,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:27:21,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-05 10:27:21,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:27:21,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-05 10:27:21,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-05 10:27:21,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:27:21,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 69 transitions, 300 flow. Second operand has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:21,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:27:21,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:27:21,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:27:21,909 INFO L124 PetriNetUnfolderBase]: 1870/3830 cut-off events. [2024-02-05 10:27:21,909 INFO L125 PetriNetUnfolderBase]: For 1968/1984 co-relation queries the response was YES. [2024-02-05 10:27:21,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8742 conditions, 3830 events. 1870/3830 cut-off events. For 1968/1984 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 29285 event pairs, 1288 based on Foata normal form. 25/3164 useless extension candidates. Maximal degree in co-relation 8715. Up to 2925 conditions per place. [2024-02-05 10:27:21,929 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 61 selfloop transitions, 11 changer transitions 0/87 dead transitions. [2024-02-05 10:27:21,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 87 transitions, 496 flow [2024-02-05 10:27:21,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-05 10:27:21,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-05 10:27:21,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 190 transitions. [2024-02-05 10:27:21,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4337899543378995 [2024-02-05 10:27:21,931 INFO L175 Difference]: Start difference. First operand has 81 places, 69 transitions, 300 flow. Second operand 6 states and 190 transitions. [2024-02-05 10:27:21,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 87 transitions, 496 flow [2024-02-05 10:27:21,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 87 transitions, 492 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-02-05 10:27:21,934 INFO L231 Difference]: Finished difference. Result has 88 places, 71 transitions, 346 flow [2024-02-05 10:27:21,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=346, PETRI_PLACES=88, PETRI_TRANSITIONS=71} [2024-02-05 10:27:21,935 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 11 predicate places. [2024-02-05 10:27:21,935 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 71 transitions, 346 flow [2024-02-05 10:27:21,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:21,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:27:21,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:27:21,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-02-05 10:27:21,936 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:27:21,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:27:21,936 INFO L85 PathProgramCache]: Analyzing trace with hash 418265522, now seen corresponding path program 1 times [2024-02-05 10:27:21,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:27:21,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610161711] [2024-02-05 10:27:21,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:27:21,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:27:21,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:27:22,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:27:22,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:27:22,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610161711] [2024-02-05 10:27:22,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610161711] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:27:22,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:27:22,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-05 10:27:22,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228415085] [2024-02-05 10:27:22,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:27:22,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-05 10:27:22,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:27:22,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-05 10:27:22,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-05 10:27:22,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:27:22,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 71 transitions, 346 flow. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:22,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:27:22,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:27:22,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:27:22,608 INFO L124 PetriNetUnfolderBase]: 1880/3845 cut-off events. [2024-02-05 10:27:22,608 INFO L125 PetriNetUnfolderBase]: For 2188/2196 co-relation queries the response was YES. [2024-02-05 10:27:22,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9025 conditions, 3845 events. 1880/3845 cut-off events. For 2188/2196 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 29343 event pairs, 1273 based on Foata normal form. 14/3255 useless extension candidates. Maximal degree in co-relation 8994. Up to 2935 conditions per place. [2024-02-05 10:27:22,641 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 63 selfloop transitions, 11 changer transitions 0/89 dead transitions. [2024-02-05 10:27:22,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 89 transitions, 546 flow [2024-02-05 10:27:22,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-05 10:27:22,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-05 10:27:22,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 168 transitions. [2024-02-05 10:27:22,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4602739726027397 [2024-02-05 10:27:22,643 INFO L175 Difference]: Start difference. First operand has 88 places, 71 transitions, 346 flow. Second operand 5 states and 168 transitions. [2024-02-05 10:27:22,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 89 transitions, 546 flow [2024-02-05 10:27:22,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 89 transitions, 524 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-02-05 10:27:22,647 INFO L231 Difference]: Finished difference. Result has 90 places, 74 transitions, 372 flow [2024-02-05 10:27:22,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=372, PETRI_PLACES=90, PETRI_TRANSITIONS=74} [2024-02-05 10:27:22,647 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 13 predicate places. [2024-02-05 10:27:22,648 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 74 transitions, 372 flow [2024-02-05 10:27:22,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:22,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:27:22,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:27:22,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-02-05 10:27:22,648 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:27:22,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:27:22,649 INFO L85 PathProgramCache]: Analyzing trace with hash -396236462, now seen corresponding path program 2 times [2024-02-05 10:27:22,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:27:22,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119832759] [2024-02-05 10:27:22,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:27:22,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:27:22,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:27:22,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:27:22,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:27:22,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119832759] [2024-02-05 10:27:22,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119832759] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:27:22,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:27:22,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-05 10:27:22,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059597344] [2024-02-05 10:27:22,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:27:22,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-05 10:27:22,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:27:22,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-05 10:27:22,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-05 10:27:22,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:27:22,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 74 transitions, 372 flow. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:22,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:27:22,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:27:22,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:27:23,266 INFO L124 PetriNetUnfolderBase]: 1870/3815 cut-off events. [2024-02-05 10:27:23,267 INFO L125 PetriNetUnfolderBase]: For 2323/2331 co-relation queries the response was YES. [2024-02-05 10:27:23,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9032 conditions, 3815 events. 1870/3815 cut-off events. For 2323/2331 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 29134 event pairs, 1284 based on Foata normal form. 14/3223 useless extension candidates. Maximal degree in co-relation 9000. Up to 2932 conditions per place. [2024-02-05 10:27:23,283 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 59 selfloop transitions, 13 changer transitions 0/87 dead transitions. [2024-02-05 10:27:23,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 87 transitions, 551 flow [2024-02-05 10:27:23,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-05 10:27:23,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-05 10:27:23,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 166 transitions. [2024-02-05 10:27:23,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4547945205479452 [2024-02-05 10:27:23,285 INFO L175 Difference]: Start difference. First operand has 90 places, 74 transitions, 372 flow. Second operand 5 states and 166 transitions. [2024-02-05 10:27:23,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 87 transitions, 551 flow [2024-02-05 10:27:23,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 87 transitions, 527 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-02-05 10:27:23,288 INFO L231 Difference]: Finished difference. Result has 92 places, 75 transitions, 387 flow [2024-02-05 10:27:23,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=387, PETRI_PLACES=92, PETRI_TRANSITIONS=75} [2024-02-05 10:27:23,289 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 15 predicate places. [2024-02-05 10:27:23,289 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 75 transitions, 387 flow [2024-02-05 10:27:23,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:23,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:27:23,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:27:23,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-02-05 10:27:23,290 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:27:23,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:27:23,290 INFO L85 PathProgramCache]: Analyzing trace with hash -466628314, now seen corresponding path program 1 times [2024-02-05 10:27:23,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:27:23,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091763362] [2024-02-05 10:27:23,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:27:23,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:27:23,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:27:23,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:27:23,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:27:23,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091763362] [2024-02-05 10:27:23,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091763362] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:27:23,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:27:23,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-05 10:27:23,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86258602] [2024-02-05 10:27:23,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:27:23,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-05 10:27:23,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:27:23,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-05 10:27:23,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-05 10:27:23,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:27:23,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 75 transitions, 387 flow. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:23,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:27:23,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:27:23,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:27:23,914 INFO L124 PetriNetUnfolderBase]: 1886/3870 cut-off events. [2024-02-05 10:27:23,914 INFO L125 PetriNetUnfolderBase]: For 2449/2477 co-relation queries the response was YES. [2024-02-05 10:27:23,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9217 conditions, 3870 events. 1886/3870 cut-off events. For 2449/2477 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 29727 event pairs, 1426 based on Foata normal form. 18/3274 useless extension candidates. Maximal degree in co-relation 9184. Up to 2938 conditions per place. [2024-02-05 10:27:23,931 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 67 selfloop transitions, 15 changer transitions 0/98 dead transitions. [2024-02-05 10:27:23,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 98 transitions, 631 flow [2024-02-05 10:27:23,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-05 10:27:23,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-05 10:27:23,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 194 transitions. [2024-02-05 10:27:23,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4429223744292237 [2024-02-05 10:27:23,933 INFO L175 Difference]: Start difference. First operand has 92 places, 75 transitions, 387 flow. Second operand 6 states and 194 transitions. [2024-02-05 10:27:23,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 98 transitions, 631 flow [2024-02-05 10:27:23,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 98 transitions, 622 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-05 10:27:23,937 INFO L231 Difference]: Finished difference. Result has 99 places, 81 transitions, 464 flow [2024-02-05 10:27:23,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=464, PETRI_PLACES=99, PETRI_TRANSITIONS=81} [2024-02-05 10:27:23,938 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 22 predicate places. [2024-02-05 10:27:23,938 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 81 transitions, 464 flow [2024-02-05 10:27:23,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:23,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:27:23,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:27:23,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-02-05 10:27:23,939 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:27:23,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:27:23,939 INFO L85 PathProgramCache]: Analyzing trace with hash -371188550, now seen corresponding path program 2 times [2024-02-05 10:27:23,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:27:23,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622582334] [2024-02-05 10:27:23,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:27:23,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:27:23,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:27:24,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:27:24,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:27:24,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622582334] [2024-02-05 10:27:24,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622582334] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:27:24,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:27:24,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-05 10:27:24,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399850332] [2024-02-05 10:27:24,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:27:24,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-05 10:27:24,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:27:24,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-05 10:27:24,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-05 10:27:24,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:27:24,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 81 transitions, 464 flow. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:24,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:27:24,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:27:24,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:27:24,631 INFO L124 PetriNetUnfolderBase]: 1896/3886 cut-off events. [2024-02-05 10:27:24,632 INFO L125 PetriNetUnfolderBase]: For 2707/2742 co-relation queries the response was YES. [2024-02-05 10:27:24,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9388 conditions, 3886 events. 1896/3886 cut-off events. For 2707/2742 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 29817 event pairs, 1423 based on Foata normal form. 20/3295 useless extension candidates. Maximal degree in co-relation 9351. Up to 2947 conditions per place. [2024-02-05 10:27:24,648 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 65 selfloop transitions, 17 changer transitions 0/98 dead transitions. [2024-02-05 10:27:24,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 98 transitions, 683 flow [2024-02-05 10:27:24,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-05 10:27:24,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-05 10:27:24,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 169 transitions. [2024-02-05 10:27:24,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46301369863013697 [2024-02-05 10:27:24,650 INFO L175 Difference]: Start difference. First operand has 99 places, 81 transitions, 464 flow. Second operand 5 states and 169 transitions. [2024-02-05 10:27:24,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 98 transitions, 683 flow [2024-02-05 10:27:24,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 98 transitions, 669 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-02-05 10:27:24,654 INFO L231 Difference]: Finished difference. Result has 103 places, 83 transitions, 508 flow [2024-02-05 10:27:24,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=508, PETRI_PLACES=103, PETRI_TRANSITIONS=83} [2024-02-05 10:27:24,655 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 26 predicate places. [2024-02-05 10:27:24,655 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 83 transitions, 508 flow [2024-02-05 10:27:24,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:24,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:27:24,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:27:24,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-02-05 10:27:24,656 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:27:24,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:27:24,656 INFO L85 PathProgramCache]: Analyzing trace with hash -370382240, now seen corresponding path program 3 times [2024-02-05 10:27:24,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:27:24,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481929855] [2024-02-05 10:27:24,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:27:24,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:27:24,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:27:24,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:27:24,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:27:24,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481929855] [2024-02-05 10:27:24,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481929855] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:27:24,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:27:24,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-05 10:27:24,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942060198] [2024-02-05 10:27:24,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:27:24,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-05 10:27:24,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:27:24,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-05 10:27:24,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-05 10:27:24,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:27:24,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 83 transitions, 508 flow. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:24,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:27:24,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:27:24,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:27:25,295 INFO L124 PetriNetUnfolderBase]: 1886/3876 cut-off events. [2024-02-05 10:27:25,295 INFO L125 PetriNetUnfolderBase]: For 2975/2999 co-relation queries the response was YES. [2024-02-05 10:27:25,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9378 conditions, 3876 events. 1886/3876 cut-off events. For 2975/2999 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 29711 event pairs, 1417 based on Foata normal form. 21/3289 useless extension candidates. Maximal degree in co-relation 9339. Up to 2944 conditions per place. [2024-02-05 10:27:25,314 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 63 selfloop transitions, 16 changer transitions 0/95 dead transitions. [2024-02-05 10:27:25,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 95 transitions, 694 flow [2024-02-05 10:27:25,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-05 10:27:25,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-05 10:27:25,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 165 transitions. [2024-02-05 10:27:25,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520547945205479 [2024-02-05 10:27:25,316 INFO L175 Difference]: Start difference. First operand has 103 places, 83 transitions, 508 flow. Second operand 5 states and 165 transitions. [2024-02-05 10:27:25,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 95 transitions, 694 flow [2024-02-05 10:27:25,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 95 transitions, 672 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-02-05 10:27:25,321 INFO L231 Difference]: Finished difference. Result has 105 places, 83 transitions, 523 flow [2024-02-05 10:27:25,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=523, PETRI_PLACES=105, PETRI_TRANSITIONS=83} [2024-02-05 10:27:25,321 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 28 predicate places. [2024-02-05 10:27:25,321 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 83 transitions, 523 flow [2024-02-05 10:27:25,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 7 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:25,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:27:25,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:27:25,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-02-05 10:27:25,322 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:27:25,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:27:25,323 INFO L85 PathProgramCache]: Analyzing trace with hash 29961245, now seen corresponding path program 1 times [2024-02-05 10:27:25,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:27:25,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194606218] [2024-02-05 10:27:25,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:27:25,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:27:25,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:27:25,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:27:25,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:27:25,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194606218] [2024-02-05 10:27:25,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194606218] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:27:25,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:27:25,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-05 10:27:25,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608559653] [2024-02-05 10:27:25,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:27:25,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-05 10:27:25,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:27:25,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-05 10:27:25,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-05 10:27:25,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-05 10:27:25,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 83 transitions, 523 flow. Second operand has 7 states, 7 states have (on average 32.42857142857143) internal successors, (227), 7 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:25,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:27:25,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-05 10:27:25,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:27:25,846 INFO L124 PetriNetUnfolderBase]: 1267/2694 cut-off events. [2024-02-05 10:27:25,847 INFO L125 PetriNetUnfolderBase]: For 2729/2740 co-relation queries the response was YES. [2024-02-05 10:27:25,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6661 conditions, 2694 events. 1267/2694 cut-off events. For 2729/2740 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 20164 event pairs, 647 based on Foata normal form. 35/2315 useless extension candidates. Maximal degree in co-relation 6622. Up to 1885 conditions per place. [2024-02-05 10:27:25,858 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 65 selfloop transitions, 17 changer transitions 0/106 dead transitions. [2024-02-05 10:27:25,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 106 transitions, 763 flow [2024-02-05 10:27:25,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-05 10:27:25,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-05 10:27:25,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 219 transitions. [2024-02-05 10:27:25,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-02-05 10:27:25,860 INFO L175 Difference]: Start difference. First operand has 105 places, 83 transitions, 523 flow. Second operand 5 states and 219 transitions. [2024-02-05 10:27:25,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 106 transitions, 763 flow [2024-02-05 10:27:25,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 106 transitions, 727 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-02-05 10:27:25,863 INFO L231 Difference]: Finished difference. Result has 107 places, 87 transitions, 561 flow [2024-02-05 10:27:25,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=561, PETRI_PLACES=107, PETRI_TRANSITIONS=87} [2024-02-05 10:27:25,864 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 30 predicate places. [2024-02-05 10:27:25,864 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 87 transitions, 561 flow [2024-02-05 10:27:25,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 32.42857142857143) internal successors, (227), 7 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:25,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:27:25,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:27:25,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-02-05 10:27:25,865 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:27:25,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:27:25,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1469292575, now seen corresponding path program 2 times [2024-02-05 10:27:25,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:27:25,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029018813] [2024-02-05 10:27:25,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:27:25,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:27:25,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:27:26,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:27:26,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:27:26,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029018813] [2024-02-05 10:27:26,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029018813] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:27:26,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:27:26,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-05 10:27:26,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784195888] [2024-02-05 10:27:26,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:27:26,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-05 10:27:26,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:27:26,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-05 10:27:26,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-02-05 10:27:26,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-05 10:27:26,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 87 transitions, 561 flow. Second operand has 7 states, 7 states have (on average 32.42857142857143) internal successors, (227), 7 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:26,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:27:26,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-05 10:27:26,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:27:26,388 INFO L124 PetriNetUnfolderBase]: 1251/2658 cut-off events. [2024-02-05 10:27:26,389 INFO L125 PetriNetUnfolderBase]: For 3726/3737 co-relation queries the response was YES. [2024-02-05 10:27:26,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6926 conditions, 2658 events. 1251/2658 cut-off events. For 3726/3737 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 19770 event pairs, 791 based on Foata normal form. 19/2343 useless extension candidates. Maximal degree in co-relation 6886. Up to 1937 conditions per place. [2024-02-05 10:27:26,404 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 60 selfloop transitions, 15 changer transitions 0/99 dead transitions. [2024-02-05 10:27:26,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 99 transitions, 745 flow [2024-02-05 10:27:26,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-05 10:27:26,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-05 10:27:26,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 177 transitions. [2024-02-05 10:27:26,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6061643835616438 [2024-02-05 10:27:26,405 INFO L175 Difference]: Start difference. First operand has 107 places, 87 transitions, 561 flow. Second operand 4 states and 177 transitions. [2024-02-05 10:27:26,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 99 transitions, 745 flow [2024-02-05 10:27:26,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 99 transitions, 733 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-02-05 10:27:26,410 INFO L231 Difference]: Finished difference. Result has 110 places, 87 transitions, 591 flow [2024-02-05 10:27:26,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=549, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=591, PETRI_PLACES=110, PETRI_TRANSITIONS=87} [2024-02-05 10:27:26,411 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 33 predicate places. [2024-02-05 10:27:26,411 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 87 transitions, 591 flow [2024-02-05 10:27:26,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 32.42857142857143) internal successors, (227), 7 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:26,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:27:26,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:27:26,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-02-05 10:27:26,412 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:27:26,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:27:26,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1120323165, now seen corresponding path program 1 times [2024-02-05 10:27:26,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:27:26,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954839093] [2024-02-05 10:27:26,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:27:26,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:27:26,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:27:26,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:27:26,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:27:26,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954839093] [2024-02-05 10:27:26,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954839093] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:27:26,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:27:26,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-05 10:27:26,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830825479] [2024-02-05 10:27:26,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:27:26,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-05 10:27:26,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:27:26,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-05 10:27:26,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-02-05 10:27:26,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-05 10:27:26,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 87 transitions, 591 flow. Second operand has 7 states, 7 states have (on average 32.42857142857143) internal successors, (227), 7 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:26,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:27:26,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-05 10:27:26,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:27:26,966 INFO L124 PetriNetUnfolderBase]: 1291/2728 cut-off events. [2024-02-05 10:27:26,967 INFO L125 PetriNetUnfolderBase]: For 4386/4406 co-relation queries the response was YES. [2024-02-05 10:27:26,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7251 conditions, 2728 events. 1291/2728 cut-off events. For 4386/4406 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 20184 event pairs, 815 based on Foata normal form. 36/2430 useless extension candidates. Maximal degree in co-relation 7209. Up to 2001 conditions per place. [2024-02-05 10:27:26,983 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 58 selfloop transitions, 17 changer transitions 0/99 dead transitions. [2024-02-05 10:27:26,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 99 transitions, 777 flow [2024-02-05 10:27:26,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-05 10:27:26,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-05 10:27:26,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 176 transitions. [2024-02-05 10:27:26,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6027397260273972 [2024-02-05 10:27:26,985 INFO L175 Difference]: Start difference. First operand has 110 places, 87 transitions, 591 flow. Second operand 4 states and 176 transitions. [2024-02-05 10:27:26,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 99 transitions, 777 flow [2024-02-05 10:27:26,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 99 transitions, 747 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-05 10:27:26,991 INFO L231 Difference]: Finished difference. Result has 111 places, 89 transitions, 624 flow [2024-02-05 10:27:26,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=561, 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=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=624, PETRI_PLACES=111, PETRI_TRANSITIONS=89} [2024-02-05 10:27:26,991 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 34 predicate places. [2024-02-05 10:27:26,992 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 89 transitions, 624 flow [2024-02-05 10:27:26,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 32.42857142857143) internal successors, (227), 7 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:26,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:27:26,992 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:27:26,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-02-05 10:27:26,993 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:27:26,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:27:26,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1828067067, now seen corresponding path program 2 times [2024-02-05 10:27:26,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:27:26,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046684025] [2024-02-05 10:27:26,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:27:26,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:27:27,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:27:27,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:27:27,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:27:27,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046684025] [2024-02-05 10:27:27,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046684025] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:27:27,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:27:27,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-05 10:27:27,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57410045] [2024-02-05 10:27:27,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:27:27,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-05 10:27:27,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:27:27,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-05 10:27:27,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-05 10:27:27,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-05 10:27:27,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 89 transitions, 624 flow. Second operand has 7 states, 7 states have (on average 32.42857142857143) internal successors, (227), 7 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:27,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:27:27,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-05 10:27:27,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:27:27,495 INFO L124 PetriNetUnfolderBase]: 1163/2472 cut-off events. [2024-02-05 10:27:27,495 INFO L125 PetriNetUnfolderBase]: For 4939/4965 co-relation queries the response was YES. [2024-02-05 10:27:27,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6885 conditions, 2472 events. 1163/2472 cut-off events. For 4939/4965 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 17867 event pairs, 751 based on Foata normal form. 42/2220 useless extension candidates. Maximal degree in co-relation 6842. Up to 1745 conditions per place. [2024-02-05 10:27:27,512 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 64 selfloop transitions, 19 changer transitions 0/107 dead transitions. [2024-02-05 10:27:27,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 107 transitions, 848 flow [2024-02-05 10:27:27,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-05 10:27:27,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-05 10:27:27,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 215 transitions. [2024-02-05 10:27:27,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.589041095890411 [2024-02-05 10:27:27,514 INFO L175 Difference]: Start difference. First operand has 111 places, 89 transitions, 624 flow. Second operand 5 states and 215 transitions. [2024-02-05 10:27:27,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 107 transitions, 848 flow [2024-02-05 10:27:27,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 107 transitions, 817 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-02-05 10:27:27,520 INFO L231 Difference]: Finished difference. Result has 114 places, 91 transitions, 656 flow [2024-02-05 10:27:27,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=595, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=656, PETRI_PLACES=114, PETRI_TRANSITIONS=91} [2024-02-05 10:27:27,521 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 37 predicate places. [2024-02-05 10:27:27,521 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 91 transitions, 656 flow [2024-02-05 10:27:27,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 32.42857142857143) internal successors, (227), 7 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:27,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:27:27,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:27:27,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-02-05 10:27:27,522 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:27:27,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:27:27,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1123882897, now seen corresponding path program 1 times [2024-02-05 10:27:27,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:27:27,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226582778] [2024-02-05 10:27:27,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:27:27,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:27:27,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:27:27,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:27:27,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:27:27,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226582778] [2024-02-05 10:27:27,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226582778] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:27:27,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:27:27,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:27:27,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376154571] [2024-02-05 10:27:27,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:27:27,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:27:27,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:27:27,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:27:27,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:27:27,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:27:27,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 91 transitions, 656 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:27,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:27:27,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:27:27,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:27:28,183 INFO L124 PetriNetUnfolderBase]: 1647/3333 cut-off events. [2024-02-05 10:27:28,183 INFO L125 PetriNetUnfolderBase]: For 6110/6127 co-relation queries the response was YES. [2024-02-05 10:27:28,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9268 conditions, 3333 events. 1647/3333 cut-off events. For 6110/6127 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 23824 event pairs, 762 based on Foata normal form. 26/2990 useless extension candidates. Maximal degree in co-relation 9224. Up to 2377 conditions per place. [2024-02-05 10:27:28,205 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 84 selfloop transitions, 21 changer transitions 0/121 dead transitions. [2024-02-05 10:27:28,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 121 transitions, 958 flow [2024-02-05 10:27:28,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-05 10:27:28,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-05 10:27:28,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 207 transitions. [2024-02-05 10:27:28,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4726027397260274 [2024-02-05 10:27:28,207 INFO L175 Difference]: Start difference. First operand has 114 places, 91 transitions, 656 flow. Second operand 6 states and 207 transitions. [2024-02-05 10:27:28,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 121 transitions, 958 flow [2024-02-05 10:27:28,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 121 transitions, 919 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-02-05 10:27:28,217 INFO L231 Difference]: Finished difference. Result has 118 places, 94 transitions, 693 flow [2024-02-05 10:27:28,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=617, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=693, PETRI_PLACES=118, PETRI_TRANSITIONS=94} [2024-02-05 10:27:28,217 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 41 predicate places. [2024-02-05 10:27:28,217 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 94 transitions, 693 flow [2024-02-05 10:27:28,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:28,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:27:28,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:27:28,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-02-05 10:27:28,218 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:27:28,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:27:28,219 INFO L85 PathProgramCache]: Analyzing trace with hash 617494199, now seen corresponding path program 1 times [2024-02-05 10:27:28,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:27:28,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232308356] [2024-02-05 10:27:28,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:27:28,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:27:28,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:27:28,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:27:28,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:27:28,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232308356] [2024-02-05 10:27:28,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232308356] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:27:28,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:27:28,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:27:28,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659863932] [2024-02-05 10:27:28,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:27:28,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:27:28,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:27:28,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:27:28,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:27:28,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:27:28,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 94 transitions, 693 flow. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:28,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:27:28,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:27:28,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:27:28,943 INFO L124 PetriNetUnfolderBase]: 1701/3467 cut-off events. [2024-02-05 10:27:28,944 INFO L125 PetriNetUnfolderBase]: For 6344/6420 co-relation queries the response was YES. [2024-02-05 10:27:28,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9754 conditions, 3467 events. 1701/3467 cut-off events. For 6344/6420 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 24800 event pairs, 832 based on Foata normal form. 36/3112 useless extension candidates. Maximal degree in co-relation 9708. Up to 2445 conditions per place. [2024-02-05 10:27:28,961 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 81 selfloop transitions, 25 changer transitions 0/123 dead transitions. [2024-02-05 10:27:28,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 123 transitions, 980 flow [2024-02-05 10:27:28,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:27:28,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:27:28,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 230 transitions. [2024-02-05 10:27:28,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4500978473581213 [2024-02-05 10:27:28,963 INFO L175 Difference]: Start difference. First operand has 118 places, 94 transitions, 693 flow. Second operand 7 states and 230 transitions. [2024-02-05 10:27:28,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 123 transitions, 980 flow [2024-02-05 10:27:28,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 123 transitions, 940 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-02-05 10:27:28,973 INFO L231 Difference]: Finished difference. Result has 121 places, 94 transitions, 711 flow [2024-02-05 10:27:28,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=711, PETRI_PLACES=121, PETRI_TRANSITIONS=94} [2024-02-05 10:27:28,973 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 44 predicate places. [2024-02-05 10:27:28,973 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 94 transitions, 711 flow [2024-02-05 10:27:28,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:28,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:27:28,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:27:28,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-02-05 10:27:28,974 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:27:28,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:27:28,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1003816937, now seen corresponding path program 2 times [2024-02-05 10:27:28,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:27:28,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504275069] [2024-02-05 10:27:28,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:27:28,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:27:28,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:27:29,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:27:29,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:27:29,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504275069] [2024-02-05 10:27:29,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504275069] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:27:29,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:27:29,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:27:29,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482726018] [2024-02-05 10:27:29,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:27:29,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:27:29,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:27:29,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:27:29,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:27:29,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:27:29,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 94 transitions, 711 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:29,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:27:29,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:27:29,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:27:29,637 INFO L124 PetriNetUnfolderBase]: 1587/3237 cut-off events. [2024-02-05 10:27:29,638 INFO L125 PetriNetUnfolderBase]: For 6461/6478 co-relation queries the response was YES. [2024-02-05 10:27:29,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9333 conditions, 3237 events. 1587/3237 cut-off events. For 6461/6478 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 23005 event pairs, 1029 based on Foata normal form. 38/2906 useless extension candidates. Maximal degree in co-relation 9286. Up to 2454 conditions per place. [2024-02-05 10:27:29,659 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 76 selfloop transitions, 17 changer transitions 0/109 dead transitions. [2024-02-05 10:27:29,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 109 transitions, 940 flow [2024-02-05 10:27:29,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-05 10:27:29,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-05 10:27:29,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 192 transitions. [2024-02-05 10:27:29,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4383561643835616 [2024-02-05 10:27:29,661 INFO L175 Difference]: Start difference. First operand has 121 places, 94 transitions, 711 flow. Second operand 6 states and 192 transitions. [2024-02-05 10:27:29,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 109 transitions, 940 flow [2024-02-05 10:27:29,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 109 transitions, 877 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-02-05 10:27:29,671 INFO L231 Difference]: Finished difference. Result has 120 places, 94 transitions, 689 flow [2024-02-05 10:27:29,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=689, PETRI_PLACES=120, PETRI_TRANSITIONS=94} [2024-02-05 10:27:29,671 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 43 predicate places. [2024-02-05 10:27:29,672 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 94 transitions, 689 flow [2024-02-05 10:27:29,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:29,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:27:29,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:27:29,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-02-05 10:27:29,672 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:27:29,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:27:29,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1120403133, now seen corresponding path program 1 times [2024-02-05 10:27:29,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:27:29,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671715495] [2024-02-05 10:27:29,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:27:29,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:27:29,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:27:29,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:27:29,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:27:29,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671715495] [2024-02-05 10:27:29,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671715495] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:27:29,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:27:29,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:27:29,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733287545] [2024-02-05 10:27:29,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:27:29,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:27:29,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:27:29,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:27:29,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:27:29,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:27:29,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 94 transitions, 689 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:29,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:27:29,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:27:29,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:27:30,557 INFO L124 PetriNetUnfolderBase]: 1694/3442 cut-off events. [2024-02-05 10:27:30,558 INFO L125 PetriNetUnfolderBase]: For 6728/6801 co-relation queries the response was YES. [2024-02-05 10:27:30,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9885 conditions, 3442 events. 1694/3442 cut-off events. For 6728/6801 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 24580 event pairs, 1003 based on Foata normal form. 42/3084 useless extension candidates. Maximal degree in co-relation 9838. Up to 2539 conditions per place. [2024-02-05 10:27:30,581 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 90 selfloop transitions, 21 changer transitions 0/128 dead transitions. [2024-02-05 10:27:30,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 128 transitions, 1026 flow [2024-02-05 10:27:30,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:27:30,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:27:30,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 252 transitions. [2024-02-05 10:27:30,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4315068493150685 [2024-02-05 10:27:30,583 INFO L175 Difference]: Start difference. First operand has 120 places, 94 transitions, 689 flow. Second operand 8 states and 252 transitions. [2024-02-05 10:27:30,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 128 transitions, 1026 flow [2024-02-05 10:27:30,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 128 transitions, 982 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-02-05 10:27:30,594 INFO L231 Difference]: Finished difference. Result has 123 places, 98 transitions, 730 flow [2024-02-05 10:27:30,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=650, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=730, PETRI_PLACES=123, PETRI_TRANSITIONS=98} [2024-02-05 10:27:30,595 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 46 predicate places. [2024-02-05 10:27:30,595 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 98 transitions, 730 flow [2024-02-05 10:27:30,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:30,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:27:30,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:27:30,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-02-05 10:27:30,596 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:27:30,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:27:30,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1491555783, now seen corresponding path program 2 times [2024-02-05 10:27:30,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:27:30,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389956324] [2024-02-05 10:27:30,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:27:30,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:27:30,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:27:30,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:27:30,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:27:30,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389956324] [2024-02-05 10:27:30,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389956324] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:27:30,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:27:30,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:27:30,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075739322] [2024-02-05 10:27:30,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:27:30,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:27:30,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:27:30,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:27:30,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:27:30,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:27:30,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 98 transitions, 730 flow. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:30,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:27:30,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:27:30,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:27:31,379 INFO L124 PetriNetUnfolderBase]: 1737/3512 cut-off events. [2024-02-05 10:27:31,379 INFO L125 PetriNetUnfolderBase]: For 6915/6993 co-relation queries the response was YES. [2024-02-05 10:27:31,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10246 conditions, 3512 events. 1737/3512 cut-off events. For 6915/6993 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 25011 event pairs, 1003 based on Foata normal form. 48/3160 useless extension candidates. Maximal degree in co-relation 10199. Up to 2699 conditions per place. [2024-02-05 10:27:31,401 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 86 selfloop transitions, 21 changer transitions 0/124 dead transitions. [2024-02-05 10:27:31,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 124 transitions, 1033 flow [2024-02-05 10:27:31,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:27:31,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:27:31,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 222 transitions. [2024-02-05 10:27:31,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4344422700587084 [2024-02-05 10:27:31,402 INFO L175 Difference]: Start difference. First operand has 123 places, 98 transitions, 730 flow. Second operand 7 states and 222 transitions. [2024-02-05 10:27:31,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 124 transitions, 1033 flow [2024-02-05 10:27:31,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 124 transitions, 969 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-02-05 10:27:31,414 INFO L231 Difference]: Finished difference. Result has 124 places, 102 transitions, 763 flow [2024-02-05 10:27:31,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=763, PETRI_PLACES=124, PETRI_TRANSITIONS=102} [2024-02-05 10:27:31,414 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 47 predicate places. [2024-02-05 10:27:31,414 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 102 transitions, 763 flow [2024-02-05 10:27:31,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:31,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:27:31,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:27:31,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-02-05 10:27:31,415 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:27:31,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:27:31,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1634300157, now seen corresponding path program 1 times [2024-02-05 10:27:31,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:27:31,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755797234] [2024-02-05 10:27:31,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:27:31,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:27:31,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:27:31,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:27:31,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:27:31,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755797234] [2024-02-05 10:27:31,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755797234] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:27:31,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:27:31,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:27:31,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046862033] [2024-02-05 10:27:31,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:27:31,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:27:31,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:27:31,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:27:31,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:27:31,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:27:31,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 102 transitions, 763 flow. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:31,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:27:31,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:27:31,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:27:32,162 INFO L124 PetriNetUnfolderBase]: 1627/3322 cut-off events. [2024-02-05 10:27:32,162 INFO L125 PetriNetUnfolderBase]: For 7090/7107 co-relation queries the response was YES. [2024-02-05 10:27:32,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9874 conditions, 3322 events. 1627/3322 cut-off events. For 7090/7107 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 23648 event pairs, 1008 based on Foata normal form. 32/2985 useless extension candidates. Maximal degree in co-relation 9827. Up to 2451 conditions per place. [2024-02-05 10:27:32,194 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 76 selfloop transitions, 26 changer transitions 0/118 dead transitions. [2024-02-05 10:27:32,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 118 transitions, 1008 flow [2024-02-05 10:27:32,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-05 10:27:32,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-05 10:27:32,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 194 transitions. [2024-02-05 10:27:32,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4429223744292237 [2024-02-05 10:27:32,199 INFO L175 Difference]: Start difference. First operand has 124 places, 102 transitions, 763 flow. Second operand 6 states and 194 transitions. [2024-02-05 10:27:32,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 118 transitions, 1008 flow [2024-02-05 10:27:32,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 118 transitions, 967 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-02-05 10:27:32,209 INFO L231 Difference]: Finished difference. Result has 125 places, 102 transitions, 794 flow [2024-02-05 10:27:32,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=722, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=794, PETRI_PLACES=125, PETRI_TRANSITIONS=102} [2024-02-05 10:27:32,210 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 48 predicate places. [2024-02-05 10:27:32,210 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 102 transitions, 794 flow [2024-02-05 10:27:32,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:32,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:27:32,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:27:32,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-02-05 10:27:32,211 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:27:32,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:27:32,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1753976769, now seen corresponding path program 2 times [2024-02-05 10:27:32,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:27:32,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356909545] [2024-02-05 10:27:32,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:27:32,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:27:32,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:27:32,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:27:32,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:27:32,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356909545] [2024-02-05 10:27:32,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356909545] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:27:32,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:27:32,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:27:32,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903450739] [2024-02-05 10:27:32,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:27:32,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:27:32,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:27:32,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:27:32,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:27:32,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:27:32,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 102 transitions, 794 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:32,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:27:32,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:27:32,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:27:33,071 INFO L124 PetriNetUnfolderBase]: 1720/3495 cut-off events. [2024-02-05 10:27:33,072 INFO L125 PetriNetUnfolderBase]: For 7958/8031 co-relation queries the response was YES. [2024-02-05 10:27:33,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10681 conditions, 3495 events. 1720/3495 cut-off events. For 7958/8031 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 24974 event pairs, 997 based on Foata normal form. 39/3128 useless extension candidates. Maximal degree in co-relation 10633. Up to 2677 conditions per place. [2024-02-05 10:27:33,094 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 90 selfloop transitions, 19 changer transitions 0/126 dead transitions. [2024-02-05 10:27:33,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 126 transitions, 1099 flow [2024-02-05 10:27:33,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:27:33,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:27:33,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 220 transitions. [2024-02-05 10:27:33,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43052837573385516 [2024-02-05 10:27:33,097 INFO L175 Difference]: Start difference. First operand has 125 places, 102 transitions, 794 flow. Second operand 7 states and 220 transitions. [2024-02-05 10:27:33,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 126 transitions, 1099 flow [2024-02-05 10:27:33,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 126 transitions, 1025 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-02-05 10:27:33,111 INFO L231 Difference]: Finished difference. Result has 126 places, 106 transitions, 809 flow [2024-02-05 10:27:33,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=728, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=809, PETRI_PLACES=126, PETRI_TRANSITIONS=106} [2024-02-05 10:27:33,111 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 49 predicate places. [2024-02-05 10:27:33,111 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 106 transitions, 809 flow [2024-02-05 10:27:33,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:33,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:27:33,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:27:33,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-02-05 10:27:33,112 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:27:33,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:27:33,113 INFO L85 PathProgramCache]: Analyzing trace with hash 422017743, now seen corresponding path program 2 times [2024-02-05 10:27:33,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:27:33,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993259169] [2024-02-05 10:27:33,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:27:33,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:27:33,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:27:33,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:27:33,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:27:33,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993259169] [2024-02-05 10:27:33,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993259169] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:27:33,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:27:33,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:27:33,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233407849] [2024-02-05 10:27:33,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:27:33,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:27:33,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:27:33,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:27:33,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:27:33,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:27:33,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 106 transitions, 809 flow. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:33,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:27:33,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:27:33,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:27:33,762 INFO L124 PetriNetUnfolderBase]: 1637/3341 cut-off events. [2024-02-05 10:27:33,763 INFO L125 PetriNetUnfolderBase]: For 7444/7461 co-relation queries the response was YES. [2024-02-05 10:27:33,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10056 conditions, 3341 events. 1637/3341 cut-off events. For 7444/7461 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 23718 event pairs, 1005 based on Foata normal form. 26/2998 useless extension candidates. Maximal degree in co-relation 10008. Up to 2358 conditions per place. [2024-02-05 10:27:33,790 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 80 selfloop transitions, 32 changer transitions 0/128 dead transitions. [2024-02-05 10:27:33,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 128 transitions, 1094 flow [2024-02-05 10:27:33,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:27:33,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:27:33,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 223 transitions. [2024-02-05 10:27:33,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.436399217221135 [2024-02-05 10:27:33,792 INFO L175 Difference]: Start difference. First operand has 126 places, 106 transitions, 809 flow. Second operand 7 states and 223 transitions. [2024-02-05 10:27:33,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 128 transitions, 1094 flow [2024-02-05 10:27:33,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 128 transitions, 1066 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-02-05 10:27:33,802 INFO L231 Difference]: Finished difference. Result has 129 places, 106 transitions, 854 flow [2024-02-05 10:27:33,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=781, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=854, PETRI_PLACES=129, PETRI_TRANSITIONS=106} [2024-02-05 10:27:33,803 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 52 predicate places. [2024-02-05 10:27:33,803 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 106 transitions, 854 flow [2024-02-05 10:27:33,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:33,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:27:33,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:27:33,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-02-05 10:27:33,804 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:27:33,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:27:33,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1753198359, now seen corresponding path program 3 times [2024-02-05 10:27:33,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:27:33,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646657108] [2024-02-05 10:27:33,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:27:33,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:27:33,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:27:34,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:27:34,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:27:34,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646657108] [2024-02-05 10:27:34,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646657108] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:27:34,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:27:34,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:27:34,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488715446] [2024-02-05 10:27:34,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:27:34,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:27:34,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:27:34,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:27:34,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:27:34,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:27:34,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 106 transitions, 854 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:34,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:27:34,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:27:34,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:27:34,504 INFO L124 PetriNetUnfolderBase]: 1710/3471 cut-off events. [2024-02-05 10:27:34,504 INFO L125 PetriNetUnfolderBase]: For 8272/8365 co-relation queries the response was YES. [2024-02-05 10:27:34,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10689 conditions, 3471 events. 1710/3471 cut-off events. For 8272/8365 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 24793 event pairs, 1002 based on Foata normal form. 62/3123 useless extension candidates. Maximal degree in co-relation 10641. Up to 2466 conditions per place. [2024-02-05 10:27:34,530 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 86 selfloop transitions, 29 changer transitions 0/132 dead transitions. [2024-02-05 10:27:34,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 132 transitions, 1157 flow [2024-02-05 10:27:34,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:27:34,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:27:34,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 227 transitions. [2024-02-05 10:27:34,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44422700587084146 [2024-02-05 10:27:34,532 INFO L175 Difference]: Start difference. First operand has 129 places, 106 transitions, 854 flow. Second operand 7 states and 227 transitions. [2024-02-05 10:27:34,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 132 transitions, 1157 flow [2024-02-05 10:27:34,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 132 transitions, 1089 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-02-05 10:27:34,549 INFO L231 Difference]: Finished difference. Result has 130 places, 108 transitions, 863 flow [2024-02-05 10:27:34,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=790, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=863, PETRI_PLACES=130, PETRI_TRANSITIONS=108} [2024-02-05 10:27:34,549 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 53 predicate places. [2024-02-05 10:27:34,549 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 108 transitions, 863 flow [2024-02-05 10:27:34,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:34,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:27:34,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:27:34,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-02-05 10:27:34,550 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:27:34,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:27:34,550 INFO L85 PathProgramCache]: Analyzing trace with hash -249829455, now seen corresponding path program 3 times [2024-02-05 10:27:34,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:27:34,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218167787] [2024-02-05 10:27:34,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:27:34,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:27:34,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:27:34,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:27:34,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:27:34,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218167787] [2024-02-05 10:27:34,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218167787] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:27:34,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:27:34,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:27:34,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345948216] [2024-02-05 10:27:34,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:27:34,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:27:34,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:27:34,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:27:34,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:27:34,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:27:34,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 108 transitions, 863 flow. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:34,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:27:34,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:27:34,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:27:35,336 INFO L124 PetriNetUnfolderBase]: 1753/3549 cut-off events. [2024-02-05 10:27:35,336 INFO L125 PetriNetUnfolderBase]: For 8672/8782 co-relation queries the response was YES. [2024-02-05 10:27:35,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11055 conditions, 3549 events. 1753/3549 cut-off events. For 8672/8782 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 25232 event pairs, 991 based on Foata normal form. 66/3212 useless extension candidates. Maximal degree in co-relation 11006. Up to 2674 conditions per place. [2024-02-05 10:27:35,357 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 96 selfloop transitions, 25 changer transitions 0/138 dead transitions. [2024-02-05 10:27:35,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 138 transitions, 1208 flow [2024-02-05 10:27:35,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:27:35,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:27:35,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 250 transitions. [2024-02-05 10:27:35,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4280821917808219 [2024-02-05 10:27:35,359 INFO L175 Difference]: Start difference. First operand has 130 places, 108 transitions, 863 flow. Second operand 8 states and 250 transitions. [2024-02-05 10:27:35,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 138 transitions, 1208 flow [2024-02-05 10:27:35,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 138 transitions, 1167 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-02-05 10:27:35,372 INFO L231 Difference]: Finished difference. Result has 134 places, 112 transitions, 935 flow [2024-02-05 10:27:35,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=822, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=935, PETRI_PLACES=134, PETRI_TRANSITIONS=112} [2024-02-05 10:27:35,373 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 57 predicate places. [2024-02-05 10:27:35,373 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 112 transitions, 935 flow [2024-02-05 10:27:35,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:35,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:27:35,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:27:35,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-02-05 10:27:35,374 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:27:35,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:27:35,374 INFO L85 PathProgramCache]: Analyzing trace with hash -252783811, now seen corresponding path program 4 times [2024-02-05 10:27:35,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:27:35,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493120312] [2024-02-05 10:27:35,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:27:35,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:27:35,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:27:35,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:27:35,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:27:35,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493120312] [2024-02-05 10:27:35,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493120312] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:27:35,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:27:35,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:27:35,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745128148] [2024-02-05 10:27:35,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:27:35,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:27:35,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:27:35,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:27:35,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:27:35,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:27:35,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 112 transitions, 935 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:35,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:27:35,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:27:35,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:27:36,081 INFO L124 PetriNetUnfolderBase]: 1743/3530 cut-off events. [2024-02-05 10:27:36,081 INFO L125 PetriNetUnfolderBase]: For 9740/9849 co-relation queries the response was YES. [2024-02-05 10:27:36,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11218 conditions, 3530 events. 1743/3530 cut-off events. For 9740/9849 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 25159 event pairs, 991 based on Foata normal form. 54/3172 useless extension candidates. Maximal degree in co-relation 11168. Up to 2660 conditions per place. [2024-02-05 10:27:36,104 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 89 selfloop transitions, 24 changer transitions 0/130 dead transitions. [2024-02-05 10:27:36,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 130 transitions, 1204 flow [2024-02-05 10:27:36,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-05 10:27:36,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-05 10:27:36,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 194 transitions. [2024-02-05 10:27:36,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4429223744292237 [2024-02-05 10:27:36,105 INFO L175 Difference]: Start difference. First operand has 134 places, 112 transitions, 935 flow. Second operand 6 states and 194 transitions. [2024-02-05 10:27:36,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 130 transitions, 1204 flow [2024-02-05 10:27:36,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 130 transitions, 1147 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-02-05 10:27:36,121 INFO L231 Difference]: Finished difference. Result has 134 places, 112 transitions, 937 flow [2024-02-05 10:27:36,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=878, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=937, PETRI_PLACES=134, PETRI_TRANSITIONS=112} [2024-02-05 10:27:36,122 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 57 predicate places. [2024-02-05 10:27:36,122 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 112 transitions, 937 flow [2024-02-05 10:27:36,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:36,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:27:36,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:27:36,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-02-05 10:27:36,123 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:27:36,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:27:36,123 INFO L85 PathProgramCache]: Analyzing trace with hash -252802685, now seen corresponding path program 4 times [2024-02-05 10:27:36,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:27:36,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364600615] [2024-02-05 10:27:36,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:27:36,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:27:36,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:27:36,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:27:36,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:27:36,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364600615] [2024-02-05 10:27:36,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364600615] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:27:36,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:27:36,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:27:36,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634984293] [2024-02-05 10:27:36,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:27:36,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:27:36,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:27:36,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:27:36,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:27:36,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:27:36,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 112 transitions, 937 flow. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:36,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:27:36,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:27:36,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:27:36,913 INFO L124 PetriNetUnfolderBase]: 1723/3525 cut-off events. [2024-02-05 10:27:36,913 INFO L125 PetriNetUnfolderBase]: For 9637/9740 co-relation queries the response was YES. [2024-02-05 10:27:36,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11065 conditions, 3525 events. 1723/3525 cut-off events. For 9637/9740 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 25098 event pairs, 784 based on Foata normal form. 54/3179 useless extension candidates. Maximal degree in co-relation 11014. Up to 2530 conditions per place. [2024-02-05 10:27:36,934 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 81 selfloop transitions, 35 changer transitions 0/133 dead transitions. [2024-02-05 10:27:36,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 133 transitions, 1220 flow [2024-02-05 10:27:36,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-05 10:27:36,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-05 10:27:36,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 199 transitions. [2024-02-05 10:27:36,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.454337899543379 [2024-02-05 10:27:36,936 INFO L175 Difference]: Start difference. First operand has 134 places, 112 transitions, 937 flow. Second operand 6 states and 199 transitions. [2024-02-05 10:27:36,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 133 transitions, 1220 flow [2024-02-05 10:27:36,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 133 transitions, 1161 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-02-05 10:27:36,951 INFO L231 Difference]: Finished difference. Result has 134 places, 112 transitions, 974 flow [2024-02-05 10:27:36,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=878, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=974, PETRI_PLACES=134, PETRI_TRANSITIONS=112} [2024-02-05 10:27:36,952 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 57 predicate places. [2024-02-05 10:27:36,952 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 112 transitions, 974 flow [2024-02-05 10:27:36,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 8 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:36,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:27:36,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:27:36,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-02-05 10:27:36,953 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:27:36,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:27:36,954 INFO L85 PathProgramCache]: Analyzing trace with hash 518153639, now seen corresponding path program 5 times [2024-02-05 10:27:36,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:27:36,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797469817] [2024-02-05 10:27:36,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:27:36,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:27:36,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:27:37,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:27:37,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:27:37,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797469817] [2024-02-05 10:27:37,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797469817] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:27:37,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:27:37,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:27:37,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161948342] [2024-02-05 10:27:37,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:27:37,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:27:37,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:27:37,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:27:37,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:27:37,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:27:37,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 112 transitions, 974 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:37,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:27:37,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:27:37,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:27:37,679 INFO L124 PetriNetUnfolderBase]: 1743/3522 cut-off events. [2024-02-05 10:27:37,679 INFO L125 PetriNetUnfolderBase]: For 10613/10713 co-relation queries the response was YES. [2024-02-05 10:27:37,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11396 conditions, 3522 events. 1743/3522 cut-off events. For 10613/10713 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 25082 event pairs, 987 based on Foata normal form. 74/3180 useless extension candidates. Maximal degree in co-relation 11345. Up to 2510 conditions per place. [2024-02-05 10:27:37,704 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 86 selfloop transitions, 32 changer transitions 0/135 dead transitions. [2024-02-05 10:27:37,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 135 transitions, 1275 flow [2024-02-05 10:27:37,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-05 10:27:37,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-05 10:27:37,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 200 transitions. [2024-02-05 10:27:37,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45662100456621 [2024-02-05 10:27:37,706 INFO L175 Difference]: Start difference. First operand has 134 places, 112 transitions, 974 flow. Second operand 6 states and 200 transitions. [2024-02-05 10:27:37,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 135 transitions, 1275 flow [2024-02-05 10:27:37,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 135 transitions, 1190 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-02-05 10:27:37,726 INFO L231 Difference]: Finished difference. Result has 134 places, 114 transitions, 973 flow [2024-02-05 10:27:37,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=889, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=973, PETRI_PLACES=134, PETRI_TRANSITIONS=114} [2024-02-05 10:27:37,726 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 57 predicate places. [2024-02-05 10:27:37,726 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 114 transitions, 973 flow [2024-02-05 10:27:37,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:37,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:27:37,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:27:37,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-02-05 10:27:37,727 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:27:37,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:27:37,727 INFO L85 PathProgramCache]: Analyzing trace with hash 544965539, now seen corresponding path program 6 times [2024-02-05 10:27:37,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:27:37,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848357163] [2024-02-05 10:27:37,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:27:37,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:27:37,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:27:37,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:27:37,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:27:37,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848357163] [2024-02-05 10:27:37,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848357163] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:27:37,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:27:37,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:27:37,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305094717] [2024-02-05 10:27:37,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:27:37,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:27:37,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:27:37,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:27:37,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:27:37,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:27:37,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 114 transitions, 973 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:37,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:27:37,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:27:37,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:27:38,412 INFO L124 PetriNetUnfolderBase]: 1765/3562 cut-off events. [2024-02-05 10:27:38,412 INFO L125 PetriNetUnfolderBase]: For 9482/9564 co-relation queries the response was YES. [2024-02-05 10:27:38,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11272 conditions, 3562 events. 1765/3562 cut-off events. For 9482/9564 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 25346 event pairs, 1001 based on Foata normal form. 76/3224 useless extension candidates. Maximal degree in co-relation 11221. Up to 2535 conditions per place. [2024-02-05 10:27:38,438 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 82 selfloop transitions, 39 changer transitions 0/138 dead transitions. [2024-02-05 10:27:38,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 138 transitions, 1307 flow [2024-02-05 10:27:38,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-05 10:27:38,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-05 10:27:38,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 197 transitions. [2024-02-05 10:27:38,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4497716894977169 [2024-02-05 10:27:38,440 INFO L175 Difference]: Start difference. First operand has 134 places, 114 transitions, 973 flow. Second operand 6 states and 197 transitions. [2024-02-05 10:27:38,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 138 transitions, 1307 flow [2024-02-05 10:27:38,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 138 transitions, 1248 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-02-05 10:27:38,457 INFO L231 Difference]: Finished difference. Result has 137 places, 121 transitions, 1078 flow [2024-02-05 10:27:38,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=926, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1078, PETRI_PLACES=137, PETRI_TRANSITIONS=121} [2024-02-05 10:27:38,458 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 60 predicate places. [2024-02-05 10:27:38,458 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 121 transitions, 1078 flow [2024-02-05 10:27:38,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:38,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:27:38,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:27:38,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-02-05 10:27:38,459 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:27:38,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:27:38,459 INFO L85 PathProgramCache]: Analyzing trace with hash 919256150, now seen corresponding path program 1 times [2024-02-05 10:27:38,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:27:38,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477861370] [2024-02-05 10:27:38,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:27:38,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:27:38,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:27:38,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:27:38,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:27:38,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477861370] [2024-02-05 10:27:38,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477861370] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:27:38,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:27:38,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-05 10:27:38,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001399882] [2024-02-05 10:27:38,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:27:38,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-05 10:27:38,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:27:38,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-05 10:27:38,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-05 10:27:38,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-05 10:27:38,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 121 transitions, 1078 flow. Second operand has 7 states, 7 states have (on average 32.57142857142857) internal successors, (228), 7 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:38,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:27:38,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-05 10:27:38,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:27:38,980 INFO L124 PetriNetUnfolderBase]: 1255/2712 cut-off events. [2024-02-05 10:27:38,980 INFO L125 PetriNetUnfolderBase]: For 9257/9321 co-relation queries the response was YES. [2024-02-05 10:27:38,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8818 conditions, 2712 events. 1255/2712 cut-off events. For 9257/9321 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 19806 event pairs, 714 based on Foata normal form. 46/2451 useless extension candidates. Maximal degree in co-relation 8766. Up to 1874 conditions per place. [2024-02-05 10:27:38,999 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 109 selfloop transitions, 21 changer transitions 0/156 dead transitions. [2024-02-05 10:27:38,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 156 transitions, 1571 flow [2024-02-05 10:27:39,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-05 10:27:39,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-05 10:27:39,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 251 transitions. [2024-02-05 10:27:39,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5730593607305936 [2024-02-05 10:27:39,001 INFO L175 Difference]: Start difference. First operand has 137 places, 121 transitions, 1078 flow. Second operand 6 states and 251 transitions. [2024-02-05 10:27:39,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 156 transitions, 1571 flow [2024-02-05 10:27:39,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 156 transitions, 1510 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-02-05 10:27:39,013 INFO L231 Difference]: Finished difference. Result has 141 places, 135 transitions, 1247 flow [2024-02-05 10:27:39,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1021, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1247, PETRI_PLACES=141, PETRI_TRANSITIONS=135} [2024-02-05 10:27:39,014 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 64 predicate places. [2024-02-05 10:27:39,014 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 135 transitions, 1247 flow [2024-02-05 10:27:39,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 32.57142857142857) internal successors, (228), 7 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:39,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:27:39,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:27:39,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-02-05 10:27:39,015 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:27:39,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:27:39,015 INFO L85 PathProgramCache]: Analyzing trace with hash -531052406, now seen corresponding path program 1 times [2024-02-05 10:27:39,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:27:39,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843786652] [2024-02-05 10:27:39,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:27:39,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:27:39,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:27:39,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:27:39,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:27:39,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843786652] [2024-02-05 10:27:39,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843786652] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:27:39,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:27:39,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-05 10:27:39,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415785452] [2024-02-05 10:27:39,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:27:39,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-05 10:27:39,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:27:39,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-05 10:27:39,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-02-05 10:27:39,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-05 10:27:39,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 135 transitions, 1247 flow. Second operand has 7 states, 7 states have (on average 32.57142857142857) internal successors, (228), 7 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:39,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:27:39,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-05 10:27:39,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:27:39,527 INFO L124 PetriNetUnfolderBase]: 1225/2603 cut-off events. [2024-02-05 10:27:39,528 INFO L125 PetriNetUnfolderBase]: For 9172/9229 co-relation queries the response was YES. [2024-02-05 10:27:39,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8640 conditions, 2603 events. 1225/2603 cut-off events. For 9172/9229 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 18471 event pairs, 706 based on Foata normal form. 57/2376 useless extension candidates. Maximal degree in co-relation 8586. Up to 1860 conditions per place. [2024-02-05 10:27:39,546 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 114 selfloop transitions, 28 changer transitions 0/168 dead transitions. [2024-02-05 10:27:39,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 168 transitions, 1774 flow [2024-02-05 10:27:39,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-05 10:27:39,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-05 10:27:39,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 247 transitions. [2024-02-05 10:27:39,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5639269406392694 [2024-02-05 10:27:39,550 INFO L175 Difference]: Start difference. First operand has 141 places, 135 transitions, 1247 flow. Second operand 6 states and 247 transitions. [2024-02-05 10:27:39,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 168 transitions, 1774 flow [2024-02-05 10:27:39,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 168 transitions, 1772 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-02-05 10:27:39,565 INFO L231 Difference]: Finished difference. Result has 150 places, 154 transitions, 1557 flow [2024-02-05 10:27:39,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1245, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1557, PETRI_PLACES=150, PETRI_TRANSITIONS=154} [2024-02-05 10:27:39,565 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 73 predicate places. [2024-02-05 10:27:39,565 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 154 transitions, 1557 flow [2024-02-05 10:27:39,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 32.57142857142857) internal successors, (228), 7 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:39,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:27:39,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:27:39,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-02-05 10:27:39,566 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:27:39,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:27:39,566 INFO L85 PathProgramCache]: Analyzing trace with hash 2129257844, now seen corresponding path program 1 times [2024-02-05 10:27:39,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:27:39,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827970677] [2024-02-05 10:27:39,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:27:39,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:27:39,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:27:39,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:27:39,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:27:39,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827970677] [2024-02-05 10:27:39,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827970677] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:27:39,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:27:39,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:27:39,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517408337] [2024-02-05 10:27:39,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:27:39,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:27:39,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:27:39,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:27:39,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:27:39,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-05 10:27:39,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 154 transitions, 1557 flow. Second operand has 8 states, 8 states have (on average 32.375) internal successors, (259), 8 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:39,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:27:39,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-05 10:27:39,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:27:40,266 INFO L124 PetriNetUnfolderBase]: 1419/2936 cut-off events. [2024-02-05 10:27:40,266 INFO L125 PetriNetUnfolderBase]: For 12199/12261 co-relation queries the response was YES. [2024-02-05 10:27:40,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10216 conditions, 2936 events. 1419/2936 cut-off events. For 12199/12261 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 20936 event pairs, 560 based on Foata normal form. 108/2805 useless extension candidates. Maximal degree in co-relation 10156. Up to 1725 conditions per place. [2024-02-05 10:27:40,286 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 93 selfloop transitions, 71 changer transitions 0/190 dead transitions. [2024-02-05 10:27:40,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 190 transitions, 2057 flow [2024-02-05 10:27:40,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:27:40,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:27:40,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 332 transitions. [2024-02-05 10:27:40,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5684931506849316 [2024-02-05 10:27:40,287 INFO L175 Difference]: Start difference. First operand has 150 places, 154 transitions, 1557 flow. Second operand 8 states and 332 transitions. [2024-02-05 10:27:40,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 190 transitions, 2057 flow [2024-02-05 10:27:40,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 190 transitions, 2051 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-02-05 10:27:40,309 INFO L231 Difference]: Finished difference. Result has 159 places, 158 transitions, 1744 flow [2024-02-05 10:27:40,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1551, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1744, PETRI_PLACES=159, PETRI_TRANSITIONS=158} [2024-02-05 10:27:40,310 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 82 predicate places. [2024-02-05 10:27:40,310 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 158 transitions, 1744 flow [2024-02-05 10:27:40,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.375) internal successors, (259), 8 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:40,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:27:40,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:27:40,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-02-05 10:27:40,311 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:27:40,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:27:40,311 INFO L85 PathProgramCache]: Analyzing trace with hash 643868386, now seen corresponding path program 2 times [2024-02-05 10:27:40,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:27:40,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268017318] [2024-02-05 10:27:40,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:27:40,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:27:40,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:27:40,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:27:40,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:27:40,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268017318] [2024-02-05 10:27:40,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268017318] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:27:40,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:27:40,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:27:40,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673062451] [2024-02-05 10:27:40,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:27:40,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:27:40,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:27:40,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:27:40,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:27:40,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-05 10:27:40,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 158 transitions, 1744 flow. Second operand has 8 states, 8 states have (on average 32.375) internal successors, (259), 8 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:40,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:27:40,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-05 10:27:40,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:27:41,044 INFO L124 PetriNetUnfolderBase]: 1499/3070 cut-off events. [2024-02-05 10:27:41,044 INFO L125 PetriNetUnfolderBase]: For 15538/15600 co-relation queries the response was YES. [2024-02-05 10:27:41,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11379 conditions, 3070 events. 1499/3070 cut-off events. For 15538/15600 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 22003 event pairs, 631 based on Foata normal form. 76/2907 useless extension candidates. Maximal degree in co-relation 11315. Up to 1878 conditions per place. [2024-02-05 10:27:41,068 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 91 selfloop transitions, 69 changer transitions 0/186 dead transitions. [2024-02-05 10:27:41,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 186 transitions, 2212 flow [2024-02-05 10:27:41,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-05 10:27:41,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-05 10:27:41,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 259 transitions. [2024-02-05 10:27:41,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.591324200913242 [2024-02-05 10:27:41,070 INFO L175 Difference]: Start difference. First operand has 159 places, 158 transitions, 1744 flow. Second operand 6 states and 259 transitions. [2024-02-05 10:27:41,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 186 transitions, 2212 flow [2024-02-05 10:27:41,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 186 transitions, 2115 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-02-05 10:27:41,097 INFO L231 Difference]: Finished difference. Result has 161 places, 160 transitions, 1813 flow [2024-02-05 10:27:41,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1649, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1813, PETRI_PLACES=161, PETRI_TRANSITIONS=160} [2024-02-05 10:27:41,098 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 84 predicate places. [2024-02-05 10:27:41,098 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 160 transitions, 1813 flow [2024-02-05 10:27:41,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.375) internal successors, (259), 8 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:41,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:27:41,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:27:41,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-02-05 10:27:41,099 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:27:41,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:27:41,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1053457694, now seen corresponding path program 3 times [2024-02-05 10:27:41,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:27:41,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945650294] [2024-02-05 10:27:41,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:27:41,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:27:41,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:27:41,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:27:41,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:27:41,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945650294] [2024-02-05 10:27:41,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945650294] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:27:41,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:27:41,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:27:41,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090771157] [2024-02-05 10:27:41,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:27:41,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:27:41,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:27:41,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:27:41,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:27:41,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-05 10:27:41,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 160 transitions, 1813 flow. Second operand has 8 states, 8 states have (on average 32.375) internal successors, (259), 8 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:41,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:27:41,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-05 10:27:41,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:27:41,823 INFO L124 PetriNetUnfolderBase]: 1467/3022 cut-off events. [2024-02-05 10:27:41,823 INFO L125 PetriNetUnfolderBase]: For 15630/15692 co-relation queries the response was YES. [2024-02-05 10:27:41,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11294 conditions, 3022 events. 1467/3022 cut-off events. For 15630/15692 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 21601 event pairs, 611 based on Foata normal form. 76/2859 useless extension candidates. Maximal degree in co-relation 11228. Up to 1870 conditions per place. [2024-02-05 10:27:41,853 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 93 selfloop transitions, 69 changer transitions 0/188 dead transitions. [2024-02-05 10:27:41,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 188 transitions, 2257 flow [2024-02-05 10:27:41,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:27:41,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:27:41,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 293 transitions. [2024-02-05 10:27:41,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5733855185909981 [2024-02-05 10:27:41,869 INFO L175 Difference]: Start difference. First operand has 161 places, 160 transitions, 1813 flow. Second operand 7 states and 293 transitions. [2024-02-05 10:27:41,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 188 transitions, 2257 flow [2024-02-05 10:27:41,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 188 transitions, 2156 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-02-05 10:27:41,903 INFO L231 Difference]: Finished difference. Result has 165 places, 160 transitions, 1860 flow [2024-02-05 10:27:41,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1712, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1860, PETRI_PLACES=165, PETRI_TRANSITIONS=160} [2024-02-05 10:27:41,905 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 88 predicate places. [2024-02-05 10:27:41,905 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 160 transitions, 1860 flow [2024-02-05 10:27:41,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.375) internal successors, (259), 8 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:41,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:27:41,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:27:41,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-02-05 10:27:41,905 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:27:41,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:27:41,906 INFO L85 PathProgramCache]: Analyzing trace with hash 718560932, now seen corresponding path program 4 times [2024-02-05 10:27:41,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:27:41,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420570358] [2024-02-05 10:27:41,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:27:41,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:27:41,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:27:42,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:27:42,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:27:42,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420570358] [2024-02-05 10:27:42,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420570358] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:27:42,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:27:42,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:27:42,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478818323] [2024-02-05 10:27:42,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:27:42,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:27:42,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:27:42,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:27:42,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:27:42,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-05 10:27:42,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 160 transitions, 1860 flow. Second operand has 8 states, 8 states have (on average 32.375) internal successors, (259), 8 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:42,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:27:42,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-05 10:27:42,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:27:42,647 INFO L124 PetriNetUnfolderBase]: 1211/2478 cut-off events. [2024-02-05 10:27:42,647 INFO L125 PetriNetUnfolderBase]: For 15189/15251 co-relation queries the response was YES. [2024-02-05 10:27:42,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9657 conditions, 2478 events. 1211/2478 cut-off events. For 15189/15251 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 16842 event pairs, 451 based on Foata normal form. 92/2405 useless extension candidates. Maximal degree in co-relation 9590. Up to 1325 conditions per place. [2024-02-05 10:27:42,665 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 90 selfloop transitions, 77 changer transitions 0/193 dead transitions. [2024-02-05 10:27:42,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 193 transitions, 2340 flow [2024-02-05 10:27:42,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:27:42,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:27:42,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 330 transitions. [2024-02-05 10:27:42,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.565068493150685 [2024-02-05 10:27:42,666 INFO L175 Difference]: Start difference. First operand has 165 places, 160 transitions, 1860 flow. Second operand 8 states and 330 transitions. [2024-02-05 10:27:42,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 193 transitions, 2340 flow [2024-02-05 10:27:42,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 193 transitions, 2157 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-02-05 10:27:42,690 INFO L231 Difference]: Finished difference. Result has 166 places, 162 transitions, 1860 flow [2024-02-05 10:27:42,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1677, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1860, PETRI_PLACES=166, PETRI_TRANSITIONS=162} [2024-02-05 10:27:42,691 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 89 predicate places. [2024-02-05 10:27:42,691 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 162 transitions, 1860 flow [2024-02-05 10:27:42,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.375) internal successors, (259), 8 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:42,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:27:42,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:27:42,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-02-05 10:27:42,692 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:27:42,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:27:42,693 INFO L85 PathProgramCache]: Analyzing trace with hash 2014685492, now seen corresponding path program 1 times [2024-02-05 10:27:42,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:27:42,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088509047] [2024-02-05 10:27:42,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:27:42,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:27:42,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:27:42,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:27:42,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:27:42,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088509047] [2024-02-05 10:27:42,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088509047] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:27:42,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:27:42,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:27:42,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928805215] [2024-02-05 10:27:42,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:27:42,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:27:42,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:27:42,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:27:42,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:27:42,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:27:42,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 162 transitions, 1860 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:42,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:27:42,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:27:42,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:27:43,574 INFO L124 PetriNetUnfolderBase]: 1646/3208 cut-off events. [2024-02-05 10:27:43,574 INFO L125 PetriNetUnfolderBase]: For 16323/16434 co-relation queries the response was YES. [2024-02-05 10:27:43,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12337 conditions, 3208 events. 1646/3208 cut-off events. For 16323/16434 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 20825 event pairs, 522 based on Foata normal form. 69/3074 useless extension candidates. Maximal degree in co-relation 12269. Up to 1749 conditions per place. [2024-02-05 10:27:43,598 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 123 selfloop transitions, 69 changer transitions 0/209 dead transitions. [2024-02-05 10:27:43,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 209 transitions, 2414 flow [2024-02-05 10:27:43,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-05 10:27:43,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-05 10:27:43,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 318 transitions. [2024-02-05 10:27:43,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43561643835616437 [2024-02-05 10:27:43,600 INFO L175 Difference]: Start difference. First operand has 166 places, 162 transitions, 1860 flow. Second operand 10 states and 318 transitions. [2024-02-05 10:27:43,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 209 transitions, 2414 flow [2024-02-05 10:27:43,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 209 transitions, 2253 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-02-05 10:27:43,638 INFO L231 Difference]: Finished difference. Result has 170 places, 162 transitions, 1844 flow [2024-02-05 10:27:43,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1699, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1844, PETRI_PLACES=170, PETRI_TRANSITIONS=162} [2024-02-05 10:27:43,638 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 93 predicate places. [2024-02-05 10:27:43,638 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 162 transitions, 1844 flow [2024-02-05 10:27:43,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:43,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:27:43,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:27:43,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-02-05 10:27:43,639 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:27:43,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:27:43,639 INFO L85 PathProgramCache]: Analyzing trace with hash -149576838, now seen corresponding path program 1 times [2024-02-05 10:27:43,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:27:43,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424620689] [2024-02-05 10:27:43,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:27:43,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:27:43,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:27:43,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:27:43,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:27:43,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424620689] [2024-02-05 10:27:43,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424620689] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:27:43,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:27:43,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:27:43,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225865758] [2024-02-05 10:27:43,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:27:43,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:27:43,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:27:43,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:27:43,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:27:43,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:27:43,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 162 transitions, 1844 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:43,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:27:43,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:27:43,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:27:44,457 INFO L124 PetriNetUnfolderBase]: 1671/3244 cut-off events. [2024-02-05 10:27:44,457 INFO L125 PetriNetUnfolderBase]: For 16548/16583 co-relation queries the response was YES. [2024-02-05 10:27:44,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12598 conditions, 3244 events. 1671/3244 cut-off events. For 16548/16583 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 21269 event pairs, 531 based on Foata normal form. 44/3098 useless extension candidates. Maximal degree in co-relation 12529. Up to 1678 conditions per place. [2024-02-05 10:27:44,475 INFO L140 encePairwiseOnDemand]: 59/73 looper letters, 118 selfloop transitions, 80 changer transitions 0/215 dead transitions. [2024-02-05 10:27:44,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 215 transitions, 2453 flow [2024-02-05 10:27:44,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-05 10:27:44,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-05 10:27:44,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 324 transitions. [2024-02-05 10:27:44,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4438356164383562 [2024-02-05 10:27:44,477 INFO L175 Difference]: Start difference. First operand has 170 places, 162 transitions, 1844 flow. Second operand 10 states and 324 transitions. [2024-02-05 10:27:44,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 215 transitions, 2453 flow [2024-02-05 10:27:44,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 215 transitions, 2325 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-02-05 10:27:44,509 INFO L231 Difference]: Finished difference. Result has 173 places, 167 transitions, 1924 flow [2024-02-05 10:27:44,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1720, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1924, PETRI_PLACES=173, PETRI_TRANSITIONS=167} [2024-02-05 10:27:44,511 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 96 predicate places. [2024-02-05 10:27:44,511 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 167 transitions, 1924 flow [2024-02-05 10:27:44,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:44,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:27:44,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:27:44,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-02-05 10:27:44,512 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:27:44,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:27:44,512 INFO L85 PathProgramCache]: Analyzing trace with hash 696897129, now seen corresponding path program 1 times [2024-02-05 10:27:44,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:27:44,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304338651] [2024-02-05 10:27:44,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:27:44,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:27:44,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:27:44,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:27:44,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:27:44,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304338651] [2024-02-05 10:27:44,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304338651] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:27:44,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:27:44,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:27:44,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882774357] [2024-02-05 10:27:44,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:27:44,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:27:44,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:27:44,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:27:44,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:27:44,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:27:44,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 167 transitions, 1924 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:44,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:27:44,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:27:44,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:27:45,304 INFO L124 PetriNetUnfolderBase]: 1689/3248 cut-off events. [2024-02-05 10:27:45,305 INFO L125 PetriNetUnfolderBase]: For 17456/17509 co-relation queries the response was YES. [2024-02-05 10:27:45,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13258 conditions, 3248 events. 1689/3248 cut-off events. For 17456/17509 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 21262 event pairs, 703 based on Foata normal form. 36/3094 useless extension candidates. Maximal degree in co-relation 13187. Up to 2478 conditions per place. [2024-02-05 10:27:45,330 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 156 selfloop transitions, 27 changer transitions 0/200 dead transitions. [2024-02-05 10:27:45,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 200 transitions, 2436 flow [2024-02-05 10:27:45,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:27:45,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:27:45,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 227 transitions. [2024-02-05 10:27:45,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44422700587084146 [2024-02-05 10:27:45,332 INFO L175 Difference]: Start difference. First operand has 173 places, 167 transitions, 1924 flow. Second operand 7 states and 227 transitions. [2024-02-05 10:27:45,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 200 transitions, 2436 flow [2024-02-05 10:27:45,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 200 transitions, 2298 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-02-05 10:27:45,373 INFO L231 Difference]: Finished difference. Result has 174 places, 174 transitions, 1900 flow [2024-02-05 10:27:45,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1788, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1900, PETRI_PLACES=174, PETRI_TRANSITIONS=174} [2024-02-05 10:27:45,374 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 97 predicate places. [2024-02-05 10:27:45,374 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 174 transitions, 1900 flow [2024-02-05 10:27:45,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:45,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:27:45,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:27:45,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-02-05 10:27:45,375 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:27:45,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:27:45,375 INFO L85 PathProgramCache]: Analyzing trace with hash 696892479, now seen corresponding path program 2 times [2024-02-05 10:27:45,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:27:45,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662068132] [2024-02-05 10:27:45,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:27:45,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:27:45,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:27:45,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:27:45,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:27:45,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662068132] [2024-02-05 10:27:45,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662068132] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:27:45,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:27:45,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:27:45,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498726284] [2024-02-05 10:27:45,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:27:45,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:27:45,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:27:45,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:27:45,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:27:45,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:27:45,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 174 transitions, 1900 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:45,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:27:45,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:27:45,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:27:46,076 INFO L124 PetriNetUnfolderBase]: 1683/3238 cut-off events. [2024-02-05 10:27:46,077 INFO L125 PetriNetUnfolderBase]: For 16341/16394 co-relation queries the response was YES. [2024-02-05 10:27:46,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13066 conditions, 3238 events. 1683/3238 cut-off events. For 16341/16394 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 21263 event pairs, 690 based on Foata normal form. 36/3084 useless extension candidates. Maximal degree in co-relation 12993. Up to 2478 conditions per place. [2024-02-05 10:27:46,103 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 155 selfloop transitions, 28 changer transitions 0/200 dead transitions. [2024-02-05 10:27:46,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 200 transitions, 2368 flow [2024-02-05 10:27:46,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:27:46,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:27:46,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 227 transitions. [2024-02-05 10:27:46,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44422700587084146 [2024-02-05 10:27:46,104 INFO L175 Difference]: Start difference. First operand has 174 places, 174 transitions, 1900 flow. Second operand 7 states and 227 transitions. [2024-02-05 10:27:46,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 200 transitions, 2368 flow [2024-02-05 10:27:46,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 200 transitions, 2330 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-02-05 10:27:46,146 INFO L231 Difference]: Finished difference. Result has 178 places, 174 transitions, 1923 flow [2024-02-05 10:27:46,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1862, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1923, PETRI_PLACES=178, PETRI_TRANSITIONS=174} [2024-02-05 10:27:46,147 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 101 predicate places. [2024-02-05 10:27:46,147 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 174 transitions, 1923 flow [2024-02-05 10:27:46,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:46,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:27:46,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:27:46,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-02-05 10:27:46,147 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:27:46,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:27:46,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1352345222, now seen corresponding path program 2 times [2024-02-05 10:27:46,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:27:46,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44405307] [2024-02-05 10:27:46,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:27:46,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:27:46,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:27:46,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:27:46,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:27:46,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44405307] [2024-02-05 10:27:46,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44405307] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:27:46,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:27:46,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:27:46,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203250550] [2024-02-05 10:27:46,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:27:46,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:27:46,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:27:46,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:27:46,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:27:46,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:27:46,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 174 transitions, 1923 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:46,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:27:46,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:27:46,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:27:47,223 INFO L124 PetriNetUnfolderBase]: 2241/4159 cut-off events. [2024-02-05 10:27:47,224 INFO L125 PetriNetUnfolderBase]: For 19960/20172 co-relation queries the response was YES. [2024-02-05 10:27:47,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16708 conditions, 4159 events. 2241/4159 cut-off events. For 19960/20172 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 27497 event pairs, 826 based on Foata normal form. 93/4010 useless extension candidates. Maximal degree in co-relation 16634. Up to 2887 conditions per place. [2024-02-05 10:27:47,268 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 151 selfloop transitions, 51 changer transitions 0/223 dead transitions. [2024-02-05 10:27:47,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 223 transitions, 2567 flow [2024-02-05 10:27:47,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-05 10:27:47,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-05 10:27:47,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 313 transitions. [2024-02-05 10:27:47,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42876712328767125 [2024-02-05 10:27:47,270 INFO L175 Difference]: Start difference. First operand has 178 places, 174 transitions, 1923 flow. Second operand 10 states and 313 transitions. [2024-02-05 10:27:47,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 223 transitions, 2567 flow [2024-02-05 10:27:47,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 223 transitions, 2509 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-02-05 10:27:47,322 INFO L231 Difference]: Finished difference. Result has 184 places, 180 transitions, 2050 flow [2024-02-05 10:27:47,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1867, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2050, PETRI_PLACES=184, PETRI_TRANSITIONS=180} [2024-02-05 10:27:47,322 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 107 predicate places. [2024-02-05 10:27:47,322 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 180 transitions, 2050 flow [2024-02-05 10:27:47,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:47,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:27:47,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:27:47,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-02-05 10:27:47,323 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:27:47,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:27:47,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1151486530, now seen corresponding path program 2 times [2024-02-05 10:27:47,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:27:47,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717003168] [2024-02-05 10:27:47,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:27:47,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:27:47,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:27:47,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:27:47,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:27:47,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717003168] [2024-02-05 10:27:47,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717003168] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:27:47,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:27:47,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:27:47,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709402914] [2024-02-05 10:27:47,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:27:47,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:27:47,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:27:47,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:27:47,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:27:47,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:27:47,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 180 transitions, 2050 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:47,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:27:47,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:27:47,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:27:48,351 INFO L124 PetriNetUnfolderBase]: 1903/3631 cut-off events. [2024-02-05 10:27:48,352 INFO L125 PetriNetUnfolderBase]: For 20278/20331 co-relation queries the response was YES. [2024-02-05 10:27:48,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15234 conditions, 3631 events. 1903/3631 cut-off events. For 20278/20331 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 24468 event pairs, 720 based on Foata normal form. 68/3509 useless extension candidates. Maximal degree in co-relation 15158. Up to 1908 conditions per place. [2024-02-05 10:27:48,377 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 120 selfloop transitions, 75 changer transitions 0/212 dead transitions. [2024-02-05 10:27:48,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 212 transitions, 2605 flow [2024-02-05 10:27:48,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:27:48,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:27:48,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 259 transitions. [2024-02-05 10:27:48,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4434931506849315 [2024-02-05 10:27:48,379 INFO L175 Difference]: Start difference. First operand has 184 places, 180 transitions, 2050 flow. Second operand 8 states and 259 transitions. [2024-02-05 10:27:48,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 212 transitions, 2605 flow [2024-02-05 10:27:48,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 212 transitions, 2516 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-02-05 10:27:48,428 INFO L231 Difference]: Finished difference. Result has 185 places, 180 transitions, 2125 flow [2024-02-05 10:27:48,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1961, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2125, PETRI_PLACES=185, PETRI_TRANSITIONS=180} [2024-02-05 10:27:48,429 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 108 predicate places. [2024-02-05 10:27:48,429 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 180 transitions, 2125 flow [2024-02-05 10:27:48,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:48,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:27:48,430 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:27:48,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-02-05 10:27:48,430 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:27:48,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:27:48,430 INFO L85 PathProgramCache]: Analyzing trace with hash -978584176, now seen corresponding path program 3 times [2024-02-05 10:27:48,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:27:48,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120090017] [2024-02-05 10:27:48,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:27:48,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:27:48,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:27:48,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:27:48,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:27:48,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120090017] [2024-02-05 10:27:48,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120090017] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:27:48,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:27:48,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:27:48,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554838976] [2024-02-05 10:27:48,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:27:48,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:27:48,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:27:48,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:27:48,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:27:48,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:27:48,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 180 transitions, 2125 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:48,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:27:48,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:27:48,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:27:49,426 INFO L124 PetriNetUnfolderBase]: 2057/3855 cut-off events. [2024-02-05 10:27:49,426 INFO L125 PetriNetUnfolderBase]: For 24116/24325 co-relation queries the response was YES. [2024-02-05 10:27:49,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16425 conditions, 3855 events. 2057/3855 cut-off events. For 24116/24325 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 25250 event pairs, 766 based on Foata normal form. 120/3739 useless extension candidates. Maximal degree in co-relation 16348. Up to 2773 conditions per place. [2024-02-05 10:27:49,465 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 152 selfloop transitions, 51 changer transitions 0/224 dead transitions. [2024-02-05 10:27:49,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 224 transitions, 2701 flow [2024-02-05 10:27:49,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-05 10:27:49,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-05 10:27:49,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 336 transitions. [2024-02-05 10:27:49,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41843088418430885 [2024-02-05 10:27:49,467 INFO L175 Difference]: Start difference. First operand has 185 places, 180 transitions, 2125 flow. Second operand 11 states and 336 transitions. [2024-02-05 10:27:49,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 224 transitions, 2701 flow [2024-02-05 10:27:49,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 224 transitions, 2547 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-02-05 10:27:49,530 INFO L231 Difference]: Finished difference. Result has 189 places, 180 transitions, 2083 flow [2024-02-05 10:27:49,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1971, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2083, PETRI_PLACES=189, PETRI_TRANSITIONS=180} [2024-02-05 10:27:49,531 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 112 predicate places. [2024-02-05 10:27:49,531 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 180 transitions, 2083 flow [2024-02-05 10:27:49,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:49,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:27:49,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:27:49,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-02-05 10:27:49,531 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:27:49,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:27:49,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1152143110, now seen corresponding path program 3 times [2024-02-05 10:27:49,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:27:49,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003329066] [2024-02-05 10:27:49,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:27:49,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:27:49,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:27:49,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:27:49,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:27:49,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003329066] [2024-02-05 10:27:49,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003329066] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:27:49,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:27:49,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:27:49,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658987659] [2024-02-05 10:27:49,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:27:49,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:27:49,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:27:49,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:27:49,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:27:49,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:27:49,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 180 transitions, 2083 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:49,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:27:49,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:27:49,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:27:50,457 INFO L124 PetriNetUnfolderBase]: 1673/3263 cut-off events. [2024-02-05 10:27:50,457 INFO L125 PetriNetUnfolderBase]: For 20188/20241 co-relation queries the response was YES. [2024-02-05 10:27:50,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13710 conditions, 3263 events. 1673/3263 cut-off events. For 20188/20241 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 21611 event pairs, 630 based on Foata normal form. 104/3177 useless extension candidates. Maximal degree in co-relation 13632. Up to 1872 conditions per place. [2024-02-05 10:27:50,483 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 121 selfloop transitions, 75 changer transitions 0/213 dead transitions. [2024-02-05 10:27:50,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 213 transitions, 2642 flow [2024-02-05 10:27:50,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-05 10:27:50,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-05 10:27:50,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 282 transitions. [2024-02-05 10:27:50,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4292237442922374 [2024-02-05 10:27:50,485 INFO L175 Difference]: Start difference. First operand has 189 places, 180 transitions, 2083 flow. Second operand 9 states and 282 transitions. [2024-02-05 10:27:50,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 213 transitions, 2642 flow [2024-02-05 10:27:50,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 213 transitions, 2535 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-02-05 10:27:50,534 INFO L231 Difference]: Finished difference. Result has 188 places, 180 transitions, 2144 flow [2024-02-05 10:27:50,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1976, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2144, PETRI_PLACES=188, PETRI_TRANSITIONS=180} [2024-02-05 10:27:50,535 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 111 predicate places. [2024-02-05 10:27:50,535 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 180 transitions, 2144 flow [2024-02-05 10:27:50,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:50,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:27:50,536 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:27:50,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-02-05 10:27:50,536 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:27:50,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:27:50,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1833185391, now seen corresponding path program 3 times [2024-02-05 10:27:50,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:27:50,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727004823] [2024-02-05 10:27:50,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:27:50,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:27:50,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:27:50,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:27:50,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:27:50,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727004823] [2024-02-05 10:27:50,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727004823] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:27:50,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:27:50,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:27:50,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287212869] [2024-02-05 10:27:50,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:27:50,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:27:50,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:27:50,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:27:50,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:27:50,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:27:50,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 180 transitions, 2144 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:50,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:27:50,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:27:50,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:27:51,372 INFO L124 PetriNetUnfolderBase]: 1667/3221 cut-off events. [2024-02-05 10:27:51,392 INFO L125 PetriNetUnfolderBase]: For 21285/21345 co-relation queries the response was YES. [2024-02-05 10:27:51,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13897 conditions, 3221 events. 1667/3221 cut-off events. For 21285/21345 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 21268 event pairs, 733 based on Foata normal form. 38/3069 useless extension candidates. Maximal degree in co-relation 13818. Up to 2462 conditions per place. [2024-02-05 10:27:51,435 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 157 selfloop transitions, 32 changer transitions 0/206 dead transitions. [2024-02-05 10:27:51,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 206 transitions, 2636 flow [2024-02-05 10:27:51,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:27:51,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:27:51,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 224 transitions. [2024-02-05 10:27:51,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4383561643835616 [2024-02-05 10:27:51,437 INFO L175 Difference]: Start difference. First operand has 188 places, 180 transitions, 2144 flow. Second operand 7 states and 224 transitions. [2024-02-05 10:27:51,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 206 transitions, 2636 flow [2024-02-05 10:27:51,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 206 transitions, 2482 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-02-05 10:27:51,491 INFO L231 Difference]: Finished difference. Result has 188 places, 186 transitions, 2125 flow [2024-02-05 10:27:51,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1994, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2125, PETRI_PLACES=188, PETRI_TRANSITIONS=186} [2024-02-05 10:27:51,492 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 111 predicate places. [2024-02-05 10:27:51,492 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 186 transitions, 2125 flow [2024-02-05 10:27:51,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:51,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:27:51,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:27:51,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-02-05 10:27:51,493 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:27:51,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:27:51,494 INFO L85 PathProgramCache]: Analyzing trace with hash 166533436, now seen corresponding path program 4 times [2024-02-05 10:27:51,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:27:51,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009448755] [2024-02-05 10:27:51,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:27:51,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:27:51,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:27:51,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:27:51,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:27:51,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009448755] [2024-02-05 10:27:51,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009448755] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:27:51,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:27:51,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:27:51,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485650378] [2024-02-05 10:27:51,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:27:51,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:27:51,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:27:51,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:27:51,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:27:51,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:27:51,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 186 transitions, 2125 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:51,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:27:51,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:27:51,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:27:52,473 INFO L124 PetriNetUnfolderBase]: 2064/3871 cut-off events. [2024-02-05 10:27:52,473 INFO L125 PetriNetUnfolderBase]: For 22419/22659 co-relation queries the response was YES. [2024-02-05 10:27:52,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16584 conditions, 3871 events. 2064/3871 cut-off events. For 22419/22659 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 25491 event pairs, 697 based on Foata normal form. 106/3730 useless extension candidates. Maximal degree in co-relation 16503. Up to 2841 conditions per place. [2024-02-05 10:27:52,514 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 174 selfloop transitions, 43 changer transitions 0/240 dead transitions. [2024-02-05 10:27:52,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 240 transitions, 2833 flow [2024-02-05 10:27:52,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-05 10:27:52,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-05 10:27:52,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 337 transitions. [2024-02-05 10:27:52,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41967621419676215 [2024-02-05 10:27:52,515 INFO L175 Difference]: Start difference. First operand has 188 places, 186 transitions, 2125 flow. Second operand 11 states and 337 transitions. [2024-02-05 10:27:52,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 240 transitions, 2833 flow [2024-02-05 10:27:52,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 240 transitions, 2799 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-05 10:27:52,579 INFO L231 Difference]: Finished difference. Result has 198 places, 192 transitions, 2273 flow [2024-02-05 10:27:52,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2093, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2273, PETRI_PLACES=198, PETRI_TRANSITIONS=192} [2024-02-05 10:27:52,579 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 121 predicate places. [2024-02-05 10:27:52,579 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 192 transitions, 2273 flow [2024-02-05 10:27:52,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:52,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:27:52,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:27:52,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-02-05 10:27:52,580 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:27:52,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:27:52,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1831307666, now seen corresponding path program 5 times [2024-02-05 10:27:52,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:27:52,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707644723] [2024-02-05 10:27:52,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:27:52,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:27:52,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:27:52,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:27:52,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:27:52,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707644723] [2024-02-05 10:27:52,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707644723] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:27:52,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:27:52,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:27:52,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086081441] [2024-02-05 10:27:52,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:27:52,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:27:52,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:27:52,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:27:52,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:27:52,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:27:52,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 192 transitions, 2273 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:52,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:27:52,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:27:52,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:27:53,586 INFO L124 PetriNetUnfolderBase]: 2132/3998 cut-off events. [2024-02-05 10:27:53,586 INFO L125 PetriNetUnfolderBase]: For 26044/26282 co-relation queries the response was YES. [2024-02-05 10:27:53,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17428 conditions, 3998 events. 2132/3998 cut-off events. For 26044/26282 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 26517 event pairs, 683 based on Foata normal form. 123/3876 useless extension candidates. Maximal degree in co-relation 17344. Up to 2441 conditions per place. [2024-02-05 10:27:53,628 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 152 selfloop transitions, 69 changer transitions 0/244 dead transitions. [2024-02-05 10:27:53,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 244 transitions, 2967 flow [2024-02-05 10:27:53,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-05 10:27:53,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-05 10:27:53,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 317 transitions. [2024-02-05 10:27:53,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43424657534246575 [2024-02-05 10:27:53,629 INFO L175 Difference]: Start difference. First operand has 198 places, 192 transitions, 2273 flow. Second operand 10 states and 317 transitions. [2024-02-05 10:27:53,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 244 transitions, 2967 flow [2024-02-05 10:27:53,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 244 transitions, 2877 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-02-05 10:27:53,709 INFO L231 Difference]: Finished difference. Result has 200 places, 194 transitions, 2342 flow [2024-02-05 10:27:53,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2183, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2342, PETRI_PLACES=200, PETRI_TRANSITIONS=194} [2024-02-05 10:27:53,710 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 123 predicate places. [2024-02-05 10:27:53,710 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 194 transitions, 2342 flow [2024-02-05 10:27:53,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:53,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:27:53,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:27:53,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-02-05 10:27:53,711 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:27:53,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:27:53,711 INFO L85 PathProgramCache]: Analyzing trace with hash 450213006, now seen corresponding path program 6 times [2024-02-05 10:27:53,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:27:53,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792015504] [2024-02-05 10:27:53,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:27:53,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:27:53,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:27:53,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:27:53,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:27:53,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792015504] [2024-02-05 10:27:53,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792015504] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:27:53,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:27:53,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:27:53,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781042521] [2024-02-05 10:27:53,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:27:53,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:27:53,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:27:53,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:27:53,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:27:53,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:27:53,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 194 transitions, 2342 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:53,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:27:53,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:27:53,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:27:54,757 INFO L124 PetriNetUnfolderBase]: 2100/3925 cut-off events. [2024-02-05 10:27:54,757 INFO L125 PetriNetUnfolderBase]: For 27380/27628 co-relation queries the response was YES. [2024-02-05 10:27:54,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17370 conditions, 3925 events. 2100/3925 cut-off events. For 27380/27628 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 25880 event pairs, 721 based on Foata normal form. 118/3796 useless extension candidates. Maximal degree in co-relation 17285. Up to 2957 conditions per place. [2024-02-05 10:27:54,800 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 171 selfloop transitions, 43 changer transitions 0/237 dead transitions. [2024-02-05 10:27:54,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 237 transitions, 2934 flow [2024-02-05 10:27:54,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-05 10:27:54,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-05 10:27:54,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 310 transitions. [2024-02-05 10:27:54,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4246575342465753 [2024-02-05 10:27:54,802 INFO L175 Difference]: Start difference. First operand has 200 places, 194 transitions, 2342 flow. Second operand 10 states and 310 transitions. [2024-02-05 10:27:54,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 237 transitions, 2934 flow [2024-02-05 10:27:54,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 237 transitions, 2793 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-02-05 10:27:54,880 INFO L231 Difference]: Finished difference. Result has 202 places, 194 transitions, 2297 flow [2024-02-05 10:27:54,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2201, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2297, PETRI_PLACES=202, PETRI_TRANSITIONS=194} [2024-02-05 10:27:54,880 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 125 predicate places. [2024-02-05 10:27:54,881 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 194 transitions, 2297 flow [2024-02-05 10:27:54,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:54,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:27:54,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:27:54,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-02-05 10:27:54,881 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:27:54,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:27:54,882 INFO L85 PathProgramCache]: Analyzing trace with hash 995958211, now seen corresponding path program 1 times [2024-02-05 10:27:54,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:27:54,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720760833] [2024-02-05 10:27:54,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:27:54,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:27:54,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:27:55,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:27:55,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:27:55,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720760833] [2024-02-05 10:27:55,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720760833] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:27:55,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:27:55,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:27:55,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066867089] [2024-02-05 10:27:55,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:27:55,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:27:55,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:27:55,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:27:55,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:27:55,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:27:55,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 194 transitions, 2297 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:55,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:27:55,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:27:55,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:27:55,690 INFO L124 PetriNetUnfolderBase]: 2077/3928 cut-off events. [2024-02-05 10:27:55,690 INFO L125 PetriNetUnfolderBase]: For 26450/26669 co-relation queries the response was YES. [2024-02-05 10:27:55,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17131 conditions, 3928 events. 2077/3928 cut-off events. For 26450/26669 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 26245 event pairs, 803 based on Foata normal form. 87/3763 useless extension candidates. Maximal degree in co-relation 17045. Up to 3112 conditions per place. [2024-02-05 10:27:55,722 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 169 selfloop transitions, 38 changer transitions 0/230 dead transitions. [2024-02-05 10:27:55,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 230 transitions, 2910 flow [2024-02-05 10:27:55,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:27:55,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:27:55,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 251 transitions. [2024-02-05 10:27:55,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4297945205479452 [2024-02-05 10:27:55,724 INFO L175 Difference]: Start difference. First operand has 202 places, 194 transitions, 2297 flow. Second operand 8 states and 251 transitions. [2024-02-05 10:27:55,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 230 transitions, 2910 flow [2024-02-05 10:27:55,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 230 transitions, 2820 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-02-05 10:27:55,802 INFO L231 Difference]: Finished difference. Result has 202 places, 207 transitions, 2422 flow [2024-02-05 10:27:55,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2211, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2422, PETRI_PLACES=202, PETRI_TRANSITIONS=207} [2024-02-05 10:27:55,802 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 125 predicate places. [2024-02-05 10:27:55,803 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 207 transitions, 2422 flow [2024-02-05 10:27:55,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:55,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:27:55,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:27:55,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-02-05 10:27:55,803 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:27:55,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:27:55,804 INFO L85 PathProgramCache]: Analyzing trace with hash 968285070, now seen corresponding path program 4 times [2024-02-05 10:27:55,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:27:55,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416571338] [2024-02-05 10:27:55,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:27:55,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:27:55,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:27:56,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:27:56,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:27:56,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416571338] [2024-02-05 10:27:56,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416571338] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:27:56,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:27:56,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:27:56,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437695737] [2024-02-05 10:27:56,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:27:56,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:27:56,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:27:56,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:27:56,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:27:56,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:27:56,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 207 transitions, 2422 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:56,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:27:56,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:27:56,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:27:56,758 INFO L124 PetriNetUnfolderBase]: 1798/3452 cut-off events. [2024-02-05 10:27:56,758 INFO L125 PetriNetUnfolderBase]: For 24206/24255 co-relation queries the response was YES. [2024-02-05 10:27:56,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15114 conditions, 3452 events. 1798/3452 cut-off events. For 24206/24255 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 23021 event pairs, 630 based on Foata normal form. 65/3337 useless extension candidates. Maximal degree in co-relation 15026. Up to 1651 conditions per place. [2024-02-05 10:27:56,787 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 130 selfloop transitions, 93 changer transitions 0/244 dead transitions. [2024-02-05 10:27:56,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 244 transitions, 3067 flow [2024-02-05 10:27:56,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-05 10:27:56,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-05 10:27:56,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 310 transitions. [2024-02-05 10:27:56,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4246575342465753 [2024-02-05 10:27:56,789 INFO L175 Difference]: Start difference. First operand has 202 places, 207 transitions, 2422 flow. Second operand 10 states and 310 transitions. [2024-02-05 10:27:56,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 244 transitions, 3067 flow [2024-02-05 10:27:56,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 244 transitions, 3026 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-02-05 10:27:56,855 INFO L231 Difference]: Finished difference. Result has 210 places, 207 transitions, 2578 flow [2024-02-05 10:27:56,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2381, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2578, PETRI_PLACES=210, PETRI_TRANSITIONS=207} [2024-02-05 10:27:56,856 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 133 predicate places. [2024-02-05 10:27:56,856 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 207 transitions, 2578 flow [2024-02-05 10:27:56,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:56,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:27:56,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:27:56,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-02-05 10:27:56,857 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:27:56,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:27:56,857 INFO L85 PathProgramCache]: Analyzing trace with hash -88034848, now seen corresponding path program 7 times [2024-02-05 10:27:56,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:27:56,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205639257] [2024-02-05 10:27:56,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:27:56,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:27:56,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:27:57,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:27:57,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:27:57,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205639257] [2024-02-05 10:27:57,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205639257] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:27:57,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:27:57,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:27:57,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613398380] [2024-02-05 10:27:57,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:27:57,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:27:57,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:27:57,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:27:57,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:27:57,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:27:57,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 207 transitions, 2578 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:57,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:27:57,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:27:57,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:27:57,864 INFO L124 PetriNetUnfolderBase]: 2017/3789 cut-off events. [2024-02-05 10:27:57,864 INFO L125 PetriNetUnfolderBase]: For 27909/28145 co-relation queries the response was YES. [2024-02-05 10:27:57,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17096 conditions, 3789 events. 2017/3789 cut-off events. For 27909/28145 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 24923 event pairs, 515 based on Foata normal form. 97/3652 useless extension candidates. Maximal degree in co-relation 17006. Up to 1859 conditions per place. [2024-02-05 10:27:57,898 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 132 selfloop transitions, 97 changer transitions 0/252 dead transitions. [2024-02-05 10:27:57,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 252 transitions, 3268 flow [2024-02-05 10:27:57,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-05 10:27:57,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-05 10:27:57,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 295 transitions. [2024-02-05 10:27:57,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4490106544901065 [2024-02-05 10:27:57,900 INFO L175 Difference]: Start difference. First operand has 210 places, 207 transitions, 2578 flow. Second operand 9 states and 295 transitions. [2024-02-05 10:27:57,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 252 transitions, 3268 flow [2024-02-05 10:27:57,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 252 transitions, 3078 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-02-05 10:27:57,973 INFO L231 Difference]: Finished difference. Result has 210 places, 209 transitions, 2612 flow [2024-02-05 10:27:57,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2392, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2612, PETRI_PLACES=210, PETRI_TRANSITIONS=209} [2024-02-05 10:27:57,974 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 133 predicate places. [2024-02-05 10:27:57,974 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 209 transitions, 2612 flow [2024-02-05 10:27:57,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:57,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:27:57,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:27:57,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-02-05 10:27:57,974 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:27:57,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:27:57,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1041594606, now seen corresponding path program 8 times [2024-02-05 10:27:57,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:27:57,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299154621] [2024-02-05 10:27:57,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:27:57,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:27:57,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:27:58,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:27:58,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:27:58,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299154621] [2024-02-05 10:27:58,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299154621] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:27:58,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:27:58,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:27:58,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666532712] [2024-02-05 10:27:58,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:27:58,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:27:58,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:27:58,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:27:58,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:27:58,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:27:58,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 209 transitions, 2612 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:58,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:27:58,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:27:58,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:27:59,010 INFO L124 PetriNetUnfolderBase]: 1997/3784 cut-off events. [2024-02-05 10:27:59,010 INFO L125 PetriNetUnfolderBase]: For 28525/28765 co-relation queries the response was YES. [2024-02-05 10:27:59,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17027 conditions, 3784 events. 1997/3784 cut-off events. For 28525/28765 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 24906 event pairs, 562 based on Foata normal form. 84/3639 useless extension candidates. Maximal degree in co-relation 16936. Up to 2172 conditions per place. [2024-02-05 10:27:59,046 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 141 selfloop transitions, 81 changer transitions 0/245 dead transitions. [2024-02-05 10:27:59,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 245 transitions, 3205 flow [2024-02-05 10:27:59,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-05 10:27:59,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-05 10:27:59,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 286 transitions. [2024-02-05 10:27:59,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4353120243531202 [2024-02-05 10:27:59,048 INFO L175 Difference]: Start difference. First operand has 210 places, 209 transitions, 2612 flow. Second operand 9 states and 286 transitions. [2024-02-05 10:27:59,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 245 transitions, 3205 flow [2024-02-05 10:27:59,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 245 transitions, 3045 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-02-05 10:27:59,126 INFO L231 Difference]: Finished difference. Result has 213 places, 209 transitions, 2630 flow [2024-02-05 10:27:59,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2452, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2630, PETRI_PLACES=213, PETRI_TRANSITIONS=209} [2024-02-05 10:27:59,127 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 136 predicate places. [2024-02-05 10:27:59,127 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 209 transitions, 2630 flow [2024-02-05 10:27:59,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:59,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:27:59,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:27:59,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-02-05 10:27:59,128 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:27:59,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:27:59,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1887906272, now seen corresponding path program 9 times [2024-02-05 10:27:59,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:27:59,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696256168] [2024-02-05 10:27:59,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:27:59,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:27:59,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:27:59,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:27:59,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:27:59,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696256168] [2024-02-05 10:27:59,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696256168] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:27:59,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:27:59,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:27:59,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698771395] [2024-02-05 10:27:59,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:27:59,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:27:59,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:27:59,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:27:59,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:27:59,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:27:59,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 209 transitions, 2630 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:27:59,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:27:59,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:27:59,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:00,177 INFO L124 PetriNetUnfolderBase]: 1953/3710 cut-off events. [2024-02-05 10:28:00,177 INFO L125 PetriNetUnfolderBase]: For 30098/30334 co-relation queries the response was YES. [2024-02-05 10:28:00,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16485 conditions, 3710 events. 1953/3710 cut-off events. For 30098/30334 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 24374 event pairs, 556 based on Foata normal form. 96/3577 useless extension candidates. Maximal degree in co-relation 16393. Up to 2160 conditions per place. [2024-02-05 10:28:00,208 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 136 selfloop transitions, 81 changer transitions 0/240 dead transitions. [2024-02-05 10:28:00,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 240 transitions, 3157 flow [2024-02-05 10:28:00,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:28:00,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:28:00,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 259 transitions. [2024-02-05 10:28:00,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4434931506849315 [2024-02-05 10:28:00,210 INFO L175 Difference]: Start difference. First operand has 213 places, 209 transitions, 2630 flow. Second operand 8 states and 259 transitions. [2024-02-05 10:28:00,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 240 transitions, 3157 flow [2024-02-05 10:28:00,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 240 transitions, 2983 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-02-05 10:28:00,284 INFO L231 Difference]: Finished difference. Result has 213 places, 209 transitions, 2640 flow [2024-02-05 10:28:00,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2456, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2640, PETRI_PLACES=213, PETRI_TRANSITIONS=209} [2024-02-05 10:28:00,285 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 136 predicate places. [2024-02-05 10:28:00,285 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 209 transitions, 2640 flow [2024-02-05 10:28:00,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:00,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:00,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:00,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-02-05 10:28:00,286 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:00,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:00,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1861315819, now seen corresponding path program 2 times [2024-02-05 10:28:00,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:00,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062883002] [2024-02-05 10:28:00,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:00,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:00,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:00,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:00,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:00,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062883002] [2024-02-05 10:28:00,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062883002] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:00,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:00,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:28:00,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187593844] [2024-02-05 10:28:00,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:00,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:28:00,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:00,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:28:00,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:28:00,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:00,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 209 transitions, 2640 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:00,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:00,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:00,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:01,146 INFO L124 PetriNetUnfolderBase]: 1959/3720 cut-off events. [2024-02-05 10:28:01,146 INFO L125 PetriNetUnfolderBase]: For 28422/28653 co-relation queries the response was YES. [2024-02-05 10:28:01,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16570 conditions, 3720 events. 1959/3720 cut-off events. For 28422/28653 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 24577 event pairs, 747 based on Foata normal form. 83/3555 useless extension candidates. Maximal degree in co-relation 16477. Up to 2914 conditions per place. [2024-02-05 10:28:01,184 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 169 selfloop transitions, 42 changer transitions 0/234 dead transitions. [2024-02-05 10:28:01,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 234 transitions, 3165 flow [2024-02-05 10:28:01,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:28:01,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:28:01,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 226 transitions. [2024-02-05 10:28:01,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44227005870841485 [2024-02-05 10:28:01,186 INFO L175 Difference]: Start difference. First operand has 213 places, 209 transitions, 2640 flow. Second operand 7 states and 226 transitions. [2024-02-05 10:28:01,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 234 transitions, 3165 flow [2024-02-05 10:28:01,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 234 transitions, 2967 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-02-05 10:28:01,265 INFO L231 Difference]: Finished difference. Result has 210 places, 212 transitions, 2554 flow [2024-02-05 10:28:01,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2442, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2554, PETRI_PLACES=210, PETRI_TRANSITIONS=212} [2024-02-05 10:28:01,266 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 133 predicate places. [2024-02-05 10:28:01,266 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 212 transitions, 2554 flow [2024-02-05 10:28:01,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:01,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:01,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:01,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-02-05 10:28:01,266 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:01,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:01,267 INFO L85 PathProgramCache]: Analyzing trace with hash -274114362, now seen corresponding path program 10 times [2024-02-05 10:28:01,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:01,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374855195] [2024-02-05 10:28:01,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:01,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:01,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:01,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:01,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:01,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374855195] [2024-02-05 10:28:01,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374855195] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:01,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:01,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:28:01,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604704668] [2024-02-05 10:28:01,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:01,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:28:01,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:01,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:28:01,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:28:01,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:01,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 212 transitions, 2554 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:01,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:01,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:01,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:02,183 INFO L124 PetriNetUnfolderBase]: 2065/3835 cut-off events. [2024-02-05 10:28:02,183 INFO L125 PetriNetUnfolderBase]: For 25027/25274 co-relation queries the response was YES. [2024-02-05 10:28:02,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16716 conditions, 3835 events. 2065/3835 cut-off events. For 25027/25274 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 24950 event pairs, 501 based on Foata normal form. 115/3719 useless extension candidates. Maximal degree in co-relation 16624. Up to 1926 conditions per place. [2024-02-05 10:28:02,217 INFO L140 encePairwiseOnDemand]: 59/73 looper letters, 130 selfloop transitions, 107 changer transitions 0/260 dead transitions. [2024-02-05 10:28:02,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 260 transitions, 3236 flow [2024-02-05 10:28:02,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-05 10:28:02,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-05 10:28:02,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 316 transitions. [2024-02-05 10:28:02,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4328767123287671 [2024-02-05 10:28:02,219 INFO L175 Difference]: Start difference. First operand has 210 places, 212 transitions, 2554 flow. Second operand 10 states and 316 transitions. [2024-02-05 10:28:02,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 260 transitions, 3236 flow [2024-02-05 10:28:02,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 260 transitions, 3173 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-02-05 10:28:02,291 INFO L231 Difference]: Finished difference. Result has 217 places, 221 transitions, 2815 flow [2024-02-05 10:28:02,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2491, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2815, PETRI_PLACES=217, PETRI_TRANSITIONS=221} [2024-02-05 10:28:02,292 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 140 predicate places. [2024-02-05 10:28:02,292 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 221 transitions, 2815 flow [2024-02-05 10:28:02,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:02,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:02,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:02,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-02-05 10:28:02,292 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:02,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:02,293 INFO L85 PathProgramCache]: Analyzing trace with hash 670526463, now seen corresponding path program 3 times [2024-02-05 10:28:02,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:02,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203301240] [2024-02-05 10:28:02,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:02,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:02,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:02,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:02,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:02,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203301240] [2024-02-05 10:28:02,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203301240] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:02,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:02,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:28:02,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23071909] [2024-02-05 10:28:02,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:02,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:28:02,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:02,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:28:02,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:28:02,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:02,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 221 transitions, 2815 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:02,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:02,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:02,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:03,108 INFO L124 PetriNetUnfolderBase]: 2035/3813 cut-off events. [2024-02-05 10:28:03,108 INFO L125 PetriNetUnfolderBase]: For 28185/28428 co-relation queries the response was YES. [2024-02-05 10:28:03,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17647 conditions, 3813 events. 2035/3813 cut-off events. For 28185/28428 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 25142 event pairs, 711 based on Foata normal form. 80/3656 useless extension candidates. Maximal degree in co-relation 17554. Up to 3030 conditions per place. [2024-02-05 10:28:03,162 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 178 selfloop transitions, 42 changer transitions 0/243 dead transitions. [2024-02-05 10:28:03,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 243 transitions, 3346 flow [2024-02-05 10:28:03,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:28:03,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:28:03,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 223 transitions. [2024-02-05 10:28:03,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.436399217221135 [2024-02-05 10:28:03,164 INFO L175 Difference]: Start difference. First operand has 217 places, 221 transitions, 2815 flow. Second operand 7 states and 223 transitions. [2024-02-05 10:28:03,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 243 transitions, 3346 flow [2024-02-05 10:28:03,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 243 transitions, 3160 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-02-05 10:28:03,267 INFO L231 Difference]: Finished difference. Result has 216 places, 223 transitions, 2733 flow [2024-02-05 10:28:03,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2629, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2733, PETRI_PLACES=216, PETRI_TRANSITIONS=223} [2024-02-05 10:28:03,268 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 139 predicate places. [2024-02-05 10:28:03,268 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 223 transitions, 2733 flow [2024-02-05 10:28:03,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:03,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:03,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:03,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-02-05 10:28:03,269 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:03,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:03,269 INFO L85 PathProgramCache]: Analyzing trace with hash 671600613, now seen corresponding path program 4 times [2024-02-05 10:28:03,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:03,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547272599] [2024-02-05 10:28:03,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:03,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:03,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:03,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:03,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:03,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547272599] [2024-02-05 10:28:03,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547272599] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:03,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:03,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:28:03,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777801823] [2024-02-05 10:28:03,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:03,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:28:03,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:03,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:28:03,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:28:03,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:03,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 223 transitions, 2733 flow. Second operand has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:03,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:03,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:03,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:04,101 INFO L124 PetriNetUnfolderBase]: 2029/3803 cut-off events. [2024-02-05 10:28:04,101 INFO L125 PetriNetUnfolderBase]: For 25376/25619 co-relation queries the response was YES. [2024-02-05 10:28:04,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17090 conditions, 3803 events. 2029/3803 cut-off events. For 25376/25619 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 25098 event pairs, 713 based on Foata normal form. 76/3642 useless extension candidates. Maximal degree in co-relation 16997. Up to 3030 conditions per place. [2024-02-05 10:28:04,140 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 174 selfloop transitions, 44 changer transitions 0/241 dead transitions. [2024-02-05 10:28:04,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 241 transitions, 3232 flow [2024-02-05 10:28:04,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:28:04,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:28:04,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 221 transitions. [2024-02-05 10:28:04,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4324853228962818 [2024-02-05 10:28:04,142 INFO L175 Difference]: Start difference. First operand has 216 places, 223 transitions, 2733 flow. Second operand 7 states and 221 transitions. [2024-02-05 10:28:04,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 241 transitions, 3232 flow [2024-02-05 10:28:04,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 241 transitions, 3173 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-05 10:28:04,216 INFO L231 Difference]: Finished difference. Result has 220 places, 223 transitions, 2767 flow [2024-02-05 10:28:04,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2674, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2767, PETRI_PLACES=220, PETRI_TRANSITIONS=223} [2024-02-05 10:28:04,217 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 143 predicate places. [2024-02-05 10:28:04,217 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 223 transitions, 2767 flow [2024-02-05 10:28:04,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:04,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:04,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:04,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-02-05 10:28:04,218 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:04,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:04,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1188406002, now seen corresponding path program 1 times [2024-02-05 10:28:04,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:04,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667560747] [2024-02-05 10:28:04,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:04,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:04,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:04,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:04,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:04,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667560747] [2024-02-05 10:28:04,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667560747] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:04,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:04,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:28:04,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283032436] [2024-02-05 10:28:04,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:04,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:28:04,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:04,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:28:04,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:28:04,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:04,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 223 transitions, 2767 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:04,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:04,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:04,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:05,140 INFO L124 PetriNetUnfolderBase]: 2020/3822 cut-off events. [2024-02-05 10:28:05,141 INFO L125 PetriNetUnfolderBase]: For 26949/27124 co-relation queries the response was YES. [2024-02-05 10:28:05,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17322 conditions, 3822 events. 2020/3822 cut-off events. For 26949/27124 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 25595 event pairs, 726 based on Foata normal form. 62/3652 useless extension candidates. Maximal degree in co-relation 17228. Up to 3072 conditions per place. [2024-02-05 10:28:05,176 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 184 selfloop transitions, 53 changer transitions 0/260 dead transitions. [2024-02-05 10:28:05,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 260 transitions, 3638 flow [2024-02-05 10:28:05,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:28:05,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:28:05,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 245 transitions. [2024-02-05 10:28:05,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4195205479452055 [2024-02-05 10:28:05,178 INFO L175 Difference]: Start difference. First operand has 220 places, 223 transitions, 2767 flow. Second operand 8 states and 245 transitions. [2024-02-05 10:28:05,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 260 transitions, 3638 flow [2024-02-05 10:28:05,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 260 transitions, 3550 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-02-05 10:28:05,249 INFO L231 Difference]: Finished difference. Result has 224 places, 245 transitions, 3193 flow [2024-02-05 10:28:05,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2679, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3193, PETRI_PLACES=224, PETRI_TRANSITIONS=245} [2024-02-05 10:28:05,249 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 147 predicate places. [2024-02-05 10:28:05,249 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 245 transitions, 3193 flow [2024-02-05 10:28:05,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:05,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:05,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:05,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-02-05 10:28:05,250 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:05,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:05,250 INFO L85 PathProgramCache]: Analyzing trace with hash 811993926, now seen corresponding path program 1 times [2024-02-05 10:28:05,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:05,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205113424] [2024-02-05 10:28:05,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:05,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:05,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:05,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:05,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:05,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205113424] [2024-02-05 10:28:05,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205113424] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:05,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:05,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:28:05,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217019196] [2024-02-05 10:28:05,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:05,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:28:05,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:05,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:28:05,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:28:05,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-05 10:28:05,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 245 transitions, 3193 flow. Second operand has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:05,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:05,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-05 10:28:05,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:06,003 INFO L124 PetriNetUnfolderBase]: 1564/3144 cut-off events. [2024-02-05 10:28:06,003 INFO L125 PetriNetUnfolderBase]: For 28133/28357 co-relation queries the response was YES. [2024-02-05 10:28:06,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15038 conditions, 3144 events. 1564/3144 cut-off events. For 28133/28357 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 21716 event pairs, 472 based on Foata normal form. 87/3019 useless extension candidates. Maximal degree in co-relation 14942. Up to 2305 conditions per place. [2024-02-05 10:28:06,034 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 195 selfloop transitions, 27 changer transitions 0/260 dead transitions. [2024-02-05 10:28:06,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 260 transitions, 3707 flow [2024-02-05 10:28:06,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-05 10:28:06,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-05 10:28:06,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 244 transitions. [2024-02-05 10:28:06,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5570776255707762 [2024-02-05 10:28:06,036 INFO L175 Difference]: Start difference. First operand has 224 places, 245 transitions, 3193 flow. Second operand 6 states and 244 transitions. [2024-02-05 10:28:06,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 260 transitions, 3707 flow [2024-02-05 10:28:06,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 260 transitions, 3638 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-02-05 10:28:06,115 INFO L231 Difference]: Finished difference. Result has 228 places, 247 transitions, 3223 flow [2024-02-05 10:28:06,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3124, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3223, PETRI_PLACES=228, PETRI_TRANSITIONS=247} [2024-02-05 10:28:06,116 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 151 predicate places. [2024-02-05 10:28:06,116 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 247 transitions, 3223 flow [2024-02-05 10:28:06,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:06,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:06,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:06,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-02-05 10:28:06,117 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:06,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:06,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1401428766, now seen corresponding path program 1 times [2024-02-05 10:28:06,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:06,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528776697] [2024-02-05 10:28:06,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:06,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:06,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:06,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:06,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:06,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528776697] [2024-02-05 10:28:06,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528776697] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:06,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:06,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:28:06,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868891998] [2024-02-05 10:28:06,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:06,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:28:06,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:06,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:28:06,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:28:06,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-05 10:28:06,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 247 transitions, 3223 flow. Second operand has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:06,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:06,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-05 10:28:06,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:06,928 INFO L124 PetriNetUnfolderBase]: 1556/3139 cut-off events. [2024-02-05 10:28:06,928 INFO L125 PetriNetUnfolderBase]: For 28352/28572 co-relation queries the response was YES. [2024-02-05 10:28:06,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15130 conditions, 3139 events. 1556/3139 cut-off events. For 28352/28572 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 21705 event pairs, 458 based on Foata normal form. 107/3080 useless extension candidates. Maximal degree in co-relation 15032. Up to 2291 conditions per place. [2024-02-05 10:28:06,965 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 186 selfloop transitions, 36 changer transitions 0/260 dead transitions. [2024-02-05 10:28:06,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 260 transitions, 3734 flow [2024-02-05 10:28:06,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-05 10:28:06,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-05 10:28:06,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 241 transitions. [2024-02-05 10:28:06,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5502283105022832 [2024-02-05 10:28:06,966 INFO L175 Difference]: Start difference. First operand has 228 places, 247 transitions, 3223 flow. Second operand 6 states and 241 transitions. [2024-02-05 10:28:06,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 260 transitions, 3734 flow [2024-02-05 10:28:07,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 260 transitions, 3654 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-02-05 10:28:07,063 INFO L231 Difference]: Finished difference. Result has 231 places, 249 transitions, 3264 flow [2024-02-05 10:28:07,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3143, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3264, PETRI_PLACES=231, PETRI_TRANSITIONS=249} [2024-02-05 10:28:07,064 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 154 predicate places. [2024-02-05 10:28:07,064 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 249 transitions, 3264 flow [2024-02-05 10:28:07,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:07,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:07,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:07,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-02-05 10:28:07,069 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:07,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:07,069 INFO L85 PathProgramCache]: Analyzing trace with hash 957442728, now seen corresponding path program 1 times [2024-02-05 10:28:07,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:07,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382978361] [2024-02-05 10:28:07,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:07,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:07,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:07,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:07,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:07,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382978361] [2024-02-05 10:28:07,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382978361] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:07,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:07,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:28:07,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447222427] [2024-02-05 10:28:07,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:07,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:28:07,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:07,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:28:07,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:28:07,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-05 10:28:07,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 249 transitions, 3264 flow. Second operand has 8 states, 8 states have (on average 32.5) internal successors, (260), 8 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:07,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:07,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-05 10:28:07,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:08,016 INFO L124 PetriNetUnfolderBase]: 1585/3188 cut-off events. [2024-02-05 10:28:08,016 INFO L125 PetriNetUnfolderBase]: For 29439/29661 co-relation queries the response was YES. [2024-02-05 10:28:08,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15429 conditions, 3188 events. 1585/3188 cut-off events. For 29439/29661 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 22020 event pairs, 423 based on Foata normal form. 92/3107 useless extension candidates. Maximal degree in co-relation 15330. Up to 2023 conditions per place. [2024-02-05 10:28:08,066 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 177 selfloop transitions, 63 changer transitions 0/278 dead transitions. [2024-02-05 10:28:08,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 278 transitions, 3921 flow [2024-02-05 10:28:08,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:28:08,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:28:08,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 291 transitions. [2024-02-05 10:28:08,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5694716242661448 [2024-02-05 10:28:08,068 INFO L175 Difference]: Start difference. First operand has 231 places, 249 transitions, 3264 flow. Second operand 7 states and 291 transitions. [2024-02-05 10:28:08,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 278 transitions, 3921 flow [2024-02-05 10:28:08,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 278 transitions, 3818 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-02-05 10:28:08,162 INFO L231 Difference]: Finished difference. Result has 235 places, 255 transitions, 3356 flow [2024-02-05 10:28:08,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3161, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3356, PETRI_PLACES=235, PETRI_TRANSITIONS=255} [2024-02-05 10:28:08,163 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 158 predicate places. [2024-02-05 10:28:08,163 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 255 transitions, 3356 flow [2024-02-05 10:28:08,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.5) internal successors, (260), 8 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:08,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:08,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:08,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-02-05 10:28:08,164 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:08,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:08,165 INFO L85 PathProgramCache]: Analyzing trace with hash -57589966, now seen corresponding path program 1 times [2024-02-05 10:28:08,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:08,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474695867] [2024-02-05 10:28:08,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:08,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:08,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:08,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:08,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:08,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474695867] [2024-02-05 10:28:08,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474695867] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:08,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:08,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:28:08,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627300586] [2024-02-05 10:28:08,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:08,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:28:08,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:08,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:28:08,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:28:08,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:08,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 255 transitions, 3356 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:08,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:08,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:08,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:09,119 INFO L124 PetriNetUnfolderBase]: 2027/3815 cut-off events. [2024-02-05 10:28:09,120 INFO L125 PetriNetUnfolderBase]: For 31335/31504 co-relation queries the response was YES. [2024-02-05 10:28:09,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18352 conditions, 3815 events. 2027/3815 cut-off events. For 31335/31504 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 25387 event pairs, 624 based on Foata normal form. 55/3707 useless extension candidates. Maximal degree in co-relation 18252. Up to 2995 conditions per place. [2024-02-05 10:28:09,159 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 231 selfloop transitions, 40 changer transitions 0/294 dead transitions. [2024-02-05 10:28:09,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 294 transitions, 4117 flow [2024-02-05 10:28:09,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:28:09,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:28:09,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 230 transitions. [2024-02-05 10:28:09,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4500978473581213 [2024-02-05 10:28:09,160 INFO L175 Difference]: Start difference. First operand has 235 places, 255 transitions, 3356 flow. Second operand 7 states and 230 transitions. [2024-02-05 10:28:09,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 294 transitions, 4117 flow [2024-02-05 10:28:09,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 294 transitions, 3994 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-02-05 10:28:09,248 INFO L231 Difference]: Finished difference. Result has 239 places, 268 transitions, 3467 flow [2024-02-05 10:28:09,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3243, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3467, PETRI_PLACES=239, PETRI_TRANSITIONS=268} [2024-02-05 10:28:09,249 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 162 predicate places. [2024-02-05 10:28:09,249 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 268 transitions, 3467 flow [2024-02-05 10:28:09,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:09,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:09,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:09,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-02-05 10:28:09,250 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:09,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:09,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1490118934, now seen corresponding path program 2 times [2024-02-05 10:28:09,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:09,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227385198] [2024-02-05 10:28:09,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:09,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:09,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:09,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:09,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:09,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227385198] [2024-02-05 10:28:09,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227385198] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:09,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:09,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:28:09,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511541510] [2024-02-05 10:28:09,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:09,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:28:09,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:09,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:28:09,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:28:09,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-05 10:28:09,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 268 transitions, 3467 flow. Second operand has 8 states, 8 states have (on average 32.5) internal successors, (260), 8 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:09,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:09,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-05 10:28:09,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:10,173 INFO L124 PetriNetUnfolderBase]: 1626/3268 cut-off events. [2024-02-05 10:28:10,173 INFO L125 PetriNetUnfolderBase]: For 29716/29943 co-relation queries the response was YES. [2024-02-05 10:28:10,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15854 conditions, 3268 events. 1626/3268 cut-off events. For 29716/29943 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 22710 event pairs, 359 based on Foata normal form. 91/3179 useless extension candidates. Maximal degree in co-relation 15753. Up to 2007 conditions per place. [2024-02-05 10:28:10,213 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 181 selfloop transitions, 73 changer transitions 0/292 dead transitions. [2024-02-05 10:28:10,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 292 transitions, 4091 flow [2024-02-05 10:28:10,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:28:10,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:28:10,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 290 transitions. [2024-02-05 10:28:10,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5675146771037182 [2024-02-05 10:28:10,215 INFO L175 Difference]: Start difference. First operand has 239 places, 268 transitions, 3467 flow. Second operand 7 states and 290 transitions. [2024-02-05 10:28:10,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 292 transitions, 4091 flow [2024-02-05 10:28:10,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 292 transitions, 4039 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-02-05 10:28:10,317 INFO L231 Difference]: Finished difference. Result has 242 places, 269 transitions, 3573 flow [2024-02-05 10:28:10,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3415, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3573, PETRI_PLACES=242, PETRI_TRANSITIONS=269} [2024-02-05 10:28:10,318 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 165 predicate places. [2024-02-05 10:28:10,318 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 269 transitions, 3573 flow [2024-02-05 10:28:10,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.5) internal successors, (260), 8 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:10,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:10,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:10,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-02-05 10:28:10,319 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:10,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:10,320 INFO L85 PathProgramCache]: Analyzing trace with hash -597929346, now seen corresponding path program 2 times [2024-02-05 10:28:10,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:10,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709843525] [2024-02-05 10:28:10,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:10,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:10,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:10,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:10,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:10,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709843525] [2024-02-05 10:28:10,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709843525] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:10,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:10,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:28:10,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281320751] [2024-02-05 10:28:10,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:10,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:28:10,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:10,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:28:10,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:28:10,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:10,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 269 transitions, 3573 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:10,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:10,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:10,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:11,287 INFO L124 PetriNetUnfolderBase]: 1998/3764 cut-off events. [2024-02-05 10:28:11,287 INFO L125 PetriNetUnfolderBase]: For 30685/30854 co-relation queries the response was YES. [2024-02-05 10:28:11,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18040 conditions, 3764 events. 1998/3764 cut-off events. For 30685/30854 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 24994 event pairs, 619 based on Foata normal form. 63/3664 useless extension candidates. Maximal degree in co-relation 17940. Up to 2980 conditions per place. [2024-02-05 10:28:11,337 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 226 selfloop transitions, 38 changer transitions 0/287 dead transitions. [2024-02-05 10:28:11,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 287 transitions, 4155 flow [2024-02-05 10:28:11,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-05 10:28:11,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-05 10:28:11,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 196 transitions. [2024-02-05 10:28:11,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4474885844748858 [2024-02-05 10:28:11,339 INFO L175 Difference]: Start difference. First operand has 242 places, 269 transitions, 3573 flow. Second operand 6 states and 196 transitions. [2024-02-05 10:28:11,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 287 transitions, 4155 flow [2024-02-05 10:28:11,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 287 transitions, 4041 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-02-05 10:28:11,448 INFO L231 Difference]: Finished difference. Result has 244 places, 269 transitions, 3544 flow [2024-02-05 10:28:11,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3459, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3544, PETRI_PLACES=244, PETRI_TRANSITIONS=269} [2024-02-05 10:28:11,449 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 167 predicate places. [2024-02-05 10:28:11,449 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 269 transitions, 3544 flow [2024-02-05 10:28:11,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:11,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:11,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:11,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-02-05 10:28:11,450 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:11,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:11,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1079634646, now seen corresponding path program 3 times [2024-02-05 10:28:11,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:11,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663596255] [2024-02-05 10:28:11,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:11,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:11,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:11,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:11,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:11,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663596255] [2024-02-05 10:28:11,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663596255] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:11,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:11,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:28:11,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486053774] [2024-02-05 10:28:11,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:11,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:28:11,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:11,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:28:11,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:28:11,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:11,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 269 transitions, 3544 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:11,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:11,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:11,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:12,505 INFO L124 PetriNetUnfolderBase]: 1988/3736 cut-off events. [2024-02-05 10:28:12,506 INFO L125 PetriNetUnfolderBase]: For 30386/30559 co-relation queries the response was YES. [2024-02-05 10:28:12,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17811 conditions, 3736 events. 1988/3736 cut-off events. For 30386/30559 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 24801 event pairs, 640 based on Foata normal form. 55/3626 useless extension candidates. Maximal degree in co-relation 17710. Up to 2980 conditions per place. [2024-02-05 10:28:12,536 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 227 selfloop transitions, 36 changer transitions 0/286 dead transitions. [2024-02-05 10:28:12,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 286 transitions, 4116 flow [2024-02-05 10:28:12,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-05 10:28:12,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-05 10:28:12,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 196 transitions. [2024-02-05 10:28:12,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4474885844748858 [2024-02-05 10:28:12,538 INFO L175 Difference]: Start difference. First operand has 244 places, 269 transitions, 3544 flow. Second operand 6 states and 196 transitions. [2024-02-05 10:28:12,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 286 transitions, 4116 flow [2024-02-05 10:28:12,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 286 transitions, 4013 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-02-05 10:28:12,629 INFO L231 Difference]: Finished difference. Result has 238 places, 268 transitions, 3497 flow [2024-02-05 10:28:12,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3425, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3497, PETRI_PLACES=238, PETRI_TRANSITIONS=268} [2024-02-05 10:28:12,630 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 161 predicate places. [2024-02-05 10:28:12,630 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 268 transitions, 3497 flow [2024-02-05 10:28:12,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:12,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:12,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:12,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-02-05 10:28:12,631 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:12,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:12,631 INFO L85 PathProgramCache]: Analyzing trace with hash 145915860, now seen corresponding path program 1 times [2024-02-05 10:28:12,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:12,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614768520] [2024-02-05 10:28:12,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:12,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:12,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:12,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:12,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:12,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614768520] [2024-02-05 10:28:12,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614768520] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:12,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:12,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:28:12,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94701689] [2024-02-05 10:28:12,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:12,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:28:12,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:12,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:28:12,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:28:12,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-05 10:28:12,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 268 transitions, 3497 flow. Second operand has 8 states, 8 states have (on average 32.5) internal successors, (260), 8 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:12,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:12,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-05 10:28:12,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:13,370 INFO L124 PetriNetUnfolderBase]: 1616/3256 cut-off events. [2024-02-05 10:28:13,370 INFO L125 PetriNetUnfolderBase]: For 31337/31560 co-relation queries the response was YES. [2024-02-05 10:28:13,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15736 conditions, 3256 events. 1616/3256 cut-off events. For 31337/31560 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 22567 event pairs, 430 based on Foata normal form. 110/3196 useless extension candidates. Maximal degree in co-relation 15642. Up to 2347 conditions per place. [2024-02-05 10:28:13,406 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 185 selfloop transitions, 68 changer transitions 0/291 dead transitions. [2024-02-05 10:28:13,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 291 transitions, 4209 flow [2024-02-05 10:28:13,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-05 10:28:13,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-05 10:28:13,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 243 transitions. [2024-02-05 10:28:13,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5547945205479452 [2024-02-05 10:28:13,407 INFO L175 Difference]: Start difference. First operand has 238 places, 268 transitions, 3497 flow. Second operand 6 states and 243 transitions. [2024-02-05 10:28:13,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 291 transitions, 4209 flow [2024-02-05 10:28:13,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 291 transitions, 4111 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-02-05 10:28:13,486 INFO L231 Difference]: Finished difference. Result has 240 places, 283 transitions, 3796 flow [2024-02-05 10:28:13,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3399, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3796, PETRI_PLACES=240, PETRI_TRANSITIONS=283} [2024-02-05 10:28:13,487 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 163 predicate places. [2024-02-05 10:28:13,487 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 283 transitions, 3796 flow [2024-02-05 10:28:13,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.5) internal successors, (260), 8 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:13,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:13,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:13,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-02-05 10:28:13,487 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:13,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:13,488 INFO L85 PathProgramCache]: Analyzing trace with hash 2098105228, now seen corresponding path program 1 times [2024-02-05 10:28:13,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:13,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059246661] [2024-02-05 10:28:13,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:13,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:13,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:13,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:13,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:13,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059246661] [2024-02-05 10:28:13,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059246661] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:13,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:13,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:28:13,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34308357] [2024-02-05 10:28:13,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:13,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:28:13,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:13,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:28:13,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:28:13,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:13,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 283 transitions, 3796 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:13,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:13,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:13,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:14,510 INFO L124 PetriNetUnfolderBase]: 2073/3909 cut-off events. [2024-02-05 10:28:14,511 INFO L125 PetriNetUnfolderBase]: For 32765/33023 co-relation queries the response was YES. [2024-02-05 10:28:14,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18760 conditions, 3909 events. 2073/3909 cut-off events. For 32765/33023 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 25923 event pairs, 636 based on Foata normal form. 67/3782 useless extension candidates. Maximal degree in co-relation 18664. Up to 3076 conditions per place. [2024-02-05 10:28:14,552 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 248 selfloop transitions, 56 changer transitions 0/327 dead transitions. [2024-02-05 10:28:14,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 327 transitions, 4691 flow [2024-02-05 10:28:14,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:28:14,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:28:14,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 258 transitions. [2024-02-05 10:28:14,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4417808219178082 [2024-02-05 10:28:14,553 INFO L175 Difference]: Start difference. First operand has 240 places, 283 transitions, 3796 flow. Second operand 8 states and 258 transitions. [2024-02-05 10:28:14,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 327 transitions, 4691 flow [2024-02-05 10:28:14,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 327 transitions, 4621 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-02-05 10:28:14,660 INFO L231 Difference]: Finished difference. Result has 246 places, 299 transitions, 4080 flow [2024-02-05 10:28:14,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3728, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4080, PETRI_PLACES=246, PETRI_TRANSITIONS=299} [2024-02-05 10:28:14,660 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 169 predicate places. [2024-02-05 10:28:14,660 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 299 transitions, 4080 flow [2024-02-05 10:28:14,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:14,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:14,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:14,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-02-05 10:28:14,661 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:14,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:14,662 INFO L85 PathProgramCache]: Analyzing trace with hash 887775766, now seen corresponding path program 2 times [2024-02-05 10:28:14,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:14,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68089596] [2024-02-05 10:28:14,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:14,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:14,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:14,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:14,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:14,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68089596] [2024-02-05 10:28:14,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68089596] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:14,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:14,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:28:14,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34029632] [2024-02-05 10:28:14,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:14,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:28:14,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:14,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:28:14,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:28:14,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-05 10:28:14,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 299 transitions, 4080 flow. Second operand has 8 states, 8 states have (on average 32.5) internal successors, (260), 8 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:14,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:14,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-05 10:28:14,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:15,466 INFO L124 PetriNetUnfolderBase]: 1669/3346 cut-off events. [2024-02-05 10:28:15,467 INFO L125 PetriNetUnfolderBase]: For 33347/33577 co-relation queries the response was YES. [2024-02-05 10:28:15,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16962 conditions, 3346 events. 1669/3346 cut-off events. For 33347/33577 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 23353 event pairs, 434 based on Foata normal form. 107/3270 useless extension candidates. Maximal degree in co-relation 16864. Up to 2092 conditions per place. [2024-02-05 10:28:15,500 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 222 selfloop transitions, 74 changer transitions 0/334 dead transitions. [2024-02-05 10:28:15,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 334 transitions, 4924 flow [2024-02-05 10:28:15,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:28:15,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:28:15,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 291 transitions. [2024-02-05 10:28:15,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5694716242661448 [2024-02-05 10:28:15,502 INFO L175 Difference]: Start difference. First operand has 246 places, 299 transitions, 4080 flow. Second operand 7 states and 291 transitions. [2024-02-05 10:28:15,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 334 transitions, 4924 flow [2024-02-05 10:28:15,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 334 transitions, 4870 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-02-05 10:28:15,592 INFO L231 Difference]: Finished difference. Result has 250 places, 309 transitions, 4306 flow [2024-02-05 10:28:15,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4026, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4306, PETRI_PLACES=250, PETRI_TRANSITIONS=309} [2024-02-05 10:28:15,592 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 173 predicate places. [2024-02-05 10:28:15,592 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 309 transitions, 4306 flow [2024-02-05 10:28:15,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.5) internal successors, (260), 8 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:15,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:15,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:15,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-02-05 10:28:15,593 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:15,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:15,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1781901898, now seen corresponding path program 3 times [2024-02-05 10:28:15,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:15,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589280154] [2024-02-05 10:28:15,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:15,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:15,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:15,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:15,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:15,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589280154] [2024-02-05 10:28:15,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589280154] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:15,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:15,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-02-05 10:28:15,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212191862] [2024-02-05 10:28:15,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:15,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-05 10:28:15,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:15,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-05 10:28:15,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-02-05 10:28:15,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-05 10:28:15,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 309 transitions, 4306 flow. Second operand has 8 states, 8 states have (on average 32.5) internal successors, (260), 8 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:15,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:15,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-05 10:28:15,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:16,399 INFO L124 PetriNetUnfolderBase]: 1665/3335 cut-off events. [2024-02-05 10:28:16,400 INFO L125 PetriNetUnfolderBase]: For 35075/35315 co-relation queries the response was YES. [2024-02-05 10:28:16,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17225 conditions, 3335 events. 1665/3335 cut-off events. For 35075/35315 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 23199 event pairs, 439 based on Foata normal form. 92/3240 useless extension candidates. Maximal degree in co-relation 17125. Up to 2092 conditions per place. [2024-02-05 10:28:16,442 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 211 selfloop transitions, 82 changer transitions 0/331 dead transitions. [2024-02-05 10:28:16,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 331 transitions, 5006 flow [2024-02-05 10:28:16,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:28:16,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:28:16,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 287 transitions. [2024-02-05 10:28:16,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5616438356164384 [2024-02-05 10:28:16,443 INFO L175 Difference]: Start difference. First operand has 250 places, 309 transitions, 4306 flow. Second operand 7 states and 287 transitions. [2024-02-05 10:28:16,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 331 transitions, 5006 flow [2024-02-05 10:28:16,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 331 transitions, 4868 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-02-05 10:28:16,548 INFO L231 Difference]: Finished difference. Result has 254 places, 310 transitions, 4351 flow [2024-02-05 10:28:16,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4174, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4351, PETRI_PLACES=254, PETRI_TRANSITIONS=310} [2024-02-05 10:28:16,548 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 177 predicate places. [2024-02-05 10:28:16,549 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 310 transitions, 4351 flow [2024-02-05 10:28:16,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.5) internal successors, (260), 8 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:16,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:16,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:16,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-02-05 10:28:16,549 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:16,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:16,550 INFO L85 PathProgramCache]: Analyzing trace with hash -561229550, now seen corresponding path program 2 times [2024-02-05 10:28:16,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:16,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996956782] [2024-02-05 10:28:16,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:16,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:16,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:16,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:16,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:16,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996956782] [2024-02-05 10:28:16,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996956782] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:16,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:16,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:28:16,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402880343] [2024-02-05 10:28:16,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:16,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:28:16,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:16,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:28:16,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:28:16,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:16,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 310 transitions, 4351 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:16,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:16,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:16,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:17,491 INFO L124 PetriNetUnfolderBase]: 2085/3904 cut-off events. [2024-02-05 10:28:17,491 INFO L125 PetriNetUnfolderBase]: For 35390/35578 co-relation queries the response was YES. [2024-02-05 10:28:17,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19634 conditions, 3904 events. 2085/3904 cut-off events. For 35390/35578 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 25847 event pairs, 592 based on Foata normal form. 63/3782 useless extension candidates. Maximal degree in co-relation 19533. Up to 2677 conditions per place. [2024-02-05 10:28:17,537 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 248 selfloop transitions, 74 changer transitions 0/345 dead transitions. [2024-02-05 10:28:17,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 345 transitions, 5153 flow [2024-02-05 10:28:17,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:28:17,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:28:17,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 259 transitions. [2024-02-05 10:28:17,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4434931506849315 [2024-02-05 10:28:17,538 INFO L175 Difference]: Start difference. First operand has 254 places, 310 transitions, 4351 flow. Second operand 8 states and 259 transitions. [2024-02-05 10:28:17,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 345 transitions, 5153 flow [2024-02-05 10:28:17,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 345 transitions, 5067 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-02-05 10:28:17,656 INFO L231 Difference]: Finished difference. Result has 260 places, 315 transitions, 4468 flow [2024-02-05 10:28:17,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4265, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4468, PETRI_PLACES=260, PETRI_TRANSITIONS=315} [2024-02-05 10:28:17,657 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 183 predicate places. [2024-02-05 10:28:17,657 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 315 transitions, 4468 flow [2024-02-05 10:28:17,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:17,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:17,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:17,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-02-05 10:28:17,658 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:17,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:17,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1310259880, now seen corresponding path program 3 times [2024-02-05 10:28:17,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:17,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020449209] [2024-02-05 10:28:17,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:17,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:17,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:17,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:17,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:17,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020449209] [2024-02-05 10:28:17,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020449209] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:17,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:17,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:28:17,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594425407] [2024-02-05 10:28:17,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:17,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:28:17,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:17,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:28:17,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:28:17,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:17,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 315 transitions, 4468 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:17,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:17,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:17,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:18,579 INFO L124 PetriNetUnfolderBase]: 2103/3934 cut-off events. [2024-02-05 10:28:18,580 INFO L125 PetriNetUnfolderBase]: For 36509/36697 co-relation queries the response was YES. [2024-02-05 10:28:18,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20005 conditions, 3934 events. 2103/3934 cut-off events. For 36509/36697 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 26091 event pairs, 592 based on Foata normal form. 63/3812 useless extension candidates. Maximal degree in co-relation 19902. Up to 2685 conditions per place. [2024-02-05 10:28:18,620 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 246 selfloop transitions, 80 changer transitions 0/349 dead transitions. [2024-02-05 10:28:18,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 349 transitions, 5295 flow [2024-02-05 10:28:18,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:28:18,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:28:18,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 259 transitions. [2024-02-05 10:28:18,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4434931506849315 [2024-02-05 10:28:18,621 INFO L175 Difference]: Start difference. First operand has 260 places, 315 transitions, 4468 flow. Second operand 8 states and 259 transitions. [2024-02-05 10:28:18,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 349 transitions, 5295 flow [2024-02-05 10:28:18,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 349 transitions, 5180 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-02-05 10:28:18,739 INFO L231 Difference]: Finished difference. Result has 263 places, 319 transitions, 4552 flow [2024-02-05 10:28:18,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4359, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4552, PETRI_PLACES=263, PETRI_TRANSITIONS=319} [2024-02-05 10:28:18,740 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 186 predicate places. [2024-02-05 10:28:18,740 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 319 transitions, 4552 flow [2024-02-05 10:28:18,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:18,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:18,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:18,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-02-05 10:28:18,741 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:18,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:18,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1536373570, now seen corresponding path program 4 times [2024-02-05 10:28:18,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:18,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789238972] [2024-02-05 10:28:18,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:18,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:18,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:18,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:18,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:18,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789238972] [2024-02-05 10:28:18,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789238972] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:18,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:18,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:28:18,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192782180] [2024-02-05 10:28:18,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:18,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:28:18,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:18,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:28:18,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:28:18,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:18,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 319 transitions, 4552 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:18,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:18,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:18,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:19,695 INFO L124 PetriNetUnfolderBase]: 2103/3894 cut-off events. [2024-02-05 10:28:19,696 INFO L125 PetriNetUnfolderBase]: For 36891/37079 co-relation queries the response was YES. [2024-02-05 10:28:19,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20030 conditions, 3894 events. 2103/3894 cut-off events. For 36891/37079 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 25684 event pairs, 442 based on Foata normal form. 63/3789 useless extension candidates. Maximal degree in co-relation 19926. Up to 2689 conditions per place. [2024-02-05 10:28:19,743 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 242 selfloop transitions, 86 changer transitions 0/351 dead transitions. [2024-02-05 10:28:19,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 351 transitions, 5354 flow [2024-02-05 10:28:19,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:28:19,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:28:19,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 258 transitions. [2024-02-05 10:28:19,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4417808219178082 [2024-02-05 10:28:19,745 INFO L175 Difference]: Start difference. First operand has 263 places, 319 transitions, 4552 flow. Second operand 8 states and 258 transitions. [2024-02-05 10:28:19,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 351 transitions, 5354 flow [2024-02-05 10:28:19,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 351 transitions, 5228 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-02-05 10:28:19,856 INFO L231 Difference]: Finished difference. Result has 268 places, 322 transitions, 4656 flow [2024-02-05 10:28:19,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4428, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4656, PETRI_PLACES=268, PETRI_TRANSITIONS=322} [2024-02-05 10:28:19,856 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 191 predicate places. [2024-02-05 10:28:19,856 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 322 transitions, 4656 flow [2024-02-05 10:28:19,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:19,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:19,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:19,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-02-05 10:28:19,857 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:19,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:19,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1119273534, now seen corresponding path program 1 times [2024-02-05 10:28:19,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:19,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302892506] [2024-02-05 10:28:19,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:19,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:19,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:20,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:20,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:20,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302892506] [2024-02-05 10:28:20,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302892506] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:20,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:20,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:28:20,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158529161] [2024-02-05 10:28:20,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:20,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:28:20,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:20,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:28:20,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:28:20,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:20,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 322 transitions, 4656 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:20,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:20,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:20,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:20,950 INFO L124 PetriNetUnfolderBase]: 2145/4024 cut-off events. [2024-02-05 10:28:20,950 INFO L125 PetriNetUnfolderBase]: For 39219/39519 co-relation queries the response was YES. [2024-02-05 10:28:20,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20387 conditions, 4024 events. 2145/4024 cut-off events. For 39219/39519 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 26610 event pairs, 624 based on Foata normal form. 69/3891 useless extension candidates. Maximal degree in co-relation 20281. Up to 3236 conditions per place. [2024-02-05 10:28:21,001 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 271 selfloop transitions, 56 changer transitions 0/353 dead transitions. [2024-02-05 10:28:21,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 353 transitions, 5435 flow [2024-02-05 10:28:21,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-05 10:28:21,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-05 10:28:21,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 302 transitions. [2024-02-05 10:28:21,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4136986301369863 [2024-02-05 10:28:21,003 INFO L175 Difference]: Start difference. First operand has 268 places, 322 transitions, 4656 flow. Second operand 10 states and 302 transitions. [2024-02-05 10:28:21,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 353 transitions, 5435 flow [2024-02-05 10:28:21,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 353 transitions, 5286 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-02-05 10:28:21,158 INFO L231 Difference]: Finished difference. Result has 272 places, 326 transitions, 4658 flow [2024-02-05 10:28:21,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4509, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4658, PETRI_PLACES=272, PETRI_TRANSITIONS=326} [2024-02-05 10:28:21,159 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 195 predicate places. [2024-02-05 10:28:21,160 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 326 transitions, 4658 flow [2024-02-05 10:28:21,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:21,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:21,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:21,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-02-05 10:28:21,160 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:21,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:21,161 INFO L85 PathProgramCache]: Analyzing trace with hash -677379702, now seen corresponding path program 2 times [2024-02-05 10:28:21,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:21,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947836280] [2024-02-05 10:28:21,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:21,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:21,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:21,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:21,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:21,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947836280] [2024-02-05 10:28:21,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947836280] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:21,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:21,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:28:21,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764684597] [2024-02-05 10:28:21,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:21,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:28:21,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:21,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:28:21,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:28:21,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:21,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 326 transitions, 4658 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:21,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:21,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:21,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:22,333 INFO L124 PetriNetUnfolderBase]: 2173/4060 cut-off events. [2024-02-05 10:28:22,333 INFO L125 PetriNetUnfolderBase]: For 38217/38528 co-relation queries the response was YES. [2024-02-05 10:28:22,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20466 conditions, 4060 events. 2173/4060 cut-off events. For 38217/38528 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 26755 event pairs, 625 based on Foata normal form. 77/3931 useless extension candidates. Maximal degree in co-relation 20360. Up to 3344 conditions per place. [2024-02-05 10:28:22,382 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 276 selfloop transitions, 48 changer transitions 0/350 dead transitions. [2024-02-05 10:28:22,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 350 transitions, 5408 flow [2024-02-05 10:28:22,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-05 10:28:22,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-05 10:28:22,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 273 transitions. [2024-02-05 10:28:22,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4155251141552511 [2024-02-05 10:28:22,384 INFO L175 Difference]: Start difference. First operand has 272 places, 326 transitions, 4658 flow. Second operand 9 states and 273 transitions. [2024-02-05 10:28:22,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 350 transitions, 5408 flow [2024-02-05 10:28:22,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 350 transitions, 5244 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-02-05 10:28:22,527 INFO L231 Difference]: Finished difference. Result has 276 places, 330 transitions, 4647 flow [2024-02-05 10:28:22,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4504, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4647, PETRI_PLACES=276, PETRI_TRANSITIONS=330} [2024-02-05 10:28:22,528 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 199 predicate places. [2024-02-05 10:28:22,528 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 330 transitions, 4647 flow [2024-02-05 10:28:22,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:22,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:22,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:22,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-02-05 10:28:22,529 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:22,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:22,530 INFO L85 PathProgramCache]: Analyzing trace with hash -693309946, now seen corresponding path program 3 times [2024-02-05 10:28:22,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:22,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543725495] [2024-02-05 10:28:22,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:22,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:22,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:22,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:22,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:22,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543725495] [2024-02-05 10:28:22,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543725495] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:22,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:22,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:28:22,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110830437] [2024-02-05 10:28:22,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:22,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:28:22,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:22,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:28:22,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:28:22,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:22,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 330 transitions, 4647 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:22,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:22,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:22,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:23,558 INFO L124 PetriNetUnfolderBase]: 2175/4075 cut-off events. [2024-02-05 10:28:23,559 INFO L125 PetriNetUnfolderBase]: For 38313/38609 co-relation queries the response was YES. [2024-02-05 10:28:23,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20285 conditions, 4075 events. 2175/4075 cut-off events. For 38313/38609 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 27056 event pairs, 595 based on Foata normal form. 77/3949 useless extension candidates. Maximal degree in co-relation 20179. Up to 2661 conditions per place. [2024-02-05 10:28:23,604 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 265 selfloop transitions, 83 changer transitions 0/374 dead transitions. [2024-02-05 10:28:23,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 374 transitions, 5554 flow [2024-02-05 10:28:23,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-05 10:28:23,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-05 10:28:23,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 290 transitions. [2024-02-05 10:28:23,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.441400304414003 [2024-02-05 10:28:23,605 INFO L175 Difference]: Start difference. First operand has 276 places, 330 transitions, 4647 flow. Second operand 9 states and 290 transitions. [2024-02-05 10:28:23,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 374 transitions, 5554 flow [2024-02-05 10:28:23,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 374 transitions, 5487 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-02-05 10:28:23,797 INFO L231 Difference]: Finished difference. Result has 281 places, 335 transitions, 4784 flow [2024-02-05 10:28:23,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4580, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4784, PETRI_PLACES=281, PETRI_TRANSITIONS=335} [2024-02-05 10:28:23,798 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 204 predicate places. [2024-02-05 10:28:23,798 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 335 transitions, 4784 flow [2024-02-05 10:28:23,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:23,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:23,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:23,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-02-05 10:28:23,799 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:23,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:23,799 INFO L85 PathProgramCache]: Analyzing trace with hash -225150454, now seen corresponding path program 4 times [2024-02-05 10:28:23,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:23,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412304968] [2024-02-05 10:28:23,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:23,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:23,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:24,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:24,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:24,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412304968] [2024-02-05 10:28:24,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412304968] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:24,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:24,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:28:24,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950475078] [2024-02-05 10:28:24,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:24,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:28:24,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:24,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:28:24,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:28:24,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:24,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 335 transitions, 4784 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:24,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:24,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:24,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:24,814 INFO L124 PetriNetUnfolderBase]: 2169/4068 cut-off events. [2024-02-05 10:28:24,815 INFO L125 PetriNetUnfolderBase]: For 40030/40329 co-relation queries the response was YES. [2024-02-05 10:28:24,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20482 conditions, 4068 events. 2169/4068 cut-off events. For 40030/40329 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 27002 event pairs, 600 based on Foata normal form. 65/3930 useless extension candidates. Maximal degree in co-relation 20375. Up to 2661 conditions per place. [2024-02-05 10:28:24,862 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 258 selfloop transitions, 87 changer transitions 0/371 dead transitions. [2024-02-05 10:28:24,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 371 transitions, 5634 flow [2024-02-05 10:28:24,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-05 10:28:24,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-05 10:28:24,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 287 transitions. [2024-02-05 10:28:24,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4368340943683409 [2024-02-05 10:28:24,863 INFO L175 Difference]: Start difference. First operand has 281 places, 335 transitions, 4784 flow. Second operand 9 states and 287 transitions. [2024-02-05 10:28:24,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 371 transitions, 5634 flow [2024-02-05 10:28:24,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 371 transitions, 5503 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-02-05 10:28:25,003 INFO L231 Difference]: Finished difference. Result has 284 places, 335 transitions, 4832 flow [2024-02-05 10:28:25,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4653, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4832, PETRI_PLACES=284, PETRI_TRANSITIONS=335} [2024-02-05 10:28:25,004 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 207 predicate places. [2024-02-05 10:28:25,004 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 335 transitions, 4832 flow [2024-02-05 10:28:25,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:25,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:25,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:25,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-02-05 10:28:25,005 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:25,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:25,005 INFO L85 PathProgramCache]: Analyzing trace with hash -2131769834, now seen corresponding path program 1 times [2024-02-05 10:28:25,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:25,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051719503] [2024-02-05 10:28:25,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:25,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:25,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:25,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:25,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:25,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051719503] [2024-02-05 10:28:25,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051719503] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:25,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:25,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-05 10:28:25,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2695379] [2024-02-05 10:28:25,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:25,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-05 10:28:25,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:25,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-05 10:28:25,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-05 10:28:25,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-05 10:28:25,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 335 transitions, 4832 flow. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:25,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:25,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-05 10:28:25,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:25,797 INFO L124 PetriNetUnfolderBase]: 1758/3481 cut-off events. [2024-02-05 10:28:25,797 INFO L125 PetriNetUnfolderBase]: For 45463/45712 co-relation queries the response was YES. [2024-02-05 10:28:25,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18341 conditions, 3481 events. 1758/3481 cut-off events. For 45463/45712 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 24586 event pairs, 303 based on Foata normal form. 131/3347 useless extension candidates. Maximal degree in co-relation 18234. Up to 1040 conditions per place. [2024-02-05 10:28:25,839 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 214 selfloop transitions, 107 changer transitions 0/362 dead transitions. [2024-02-05 10:28:25,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 362 transitions, 5708 flow [2024-02-05 10:28:25,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-05 10:28:25,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-05 10:28:25,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 186 transitions. [2024-02-05 10:28:25,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.636986301369863 [2024-02-05 10:28:25,840 INFO L175 Difference]: Start difference. First operand has 284 places, 335 transitions, 4832 flow. Second operand 4 states and 186 transitions. [2024-02-05 10:28:25,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 362 transitions, 5708 flow [2024-02-05 10:28:25,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 362 transitions, 5503 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-02-05 10:28:25,978 INFO L231 Difference]: Finished difference. Result has 281 places, 336 transitions, 4964 flow [2024-02-05 10:28:25,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4630, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=4964, PETRI_PLACES=281, PETRI_TRANSITIONS=336} [2024-02-05 10:28:25,979 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 204 predicate places. [2024-02-05 10:28:25,982 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 336 transitions, 4964 flow [2024-02-05 10:28:25,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:25,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:25,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:25,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-02-05 10:28:25,983 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:25,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:25,983 INFO L85 PathProgramCache]: Analyzing trace with hash -2127782146, now seen corresponding path program 2 times [2024-02-05 10:28:25,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:25,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554711057] [2024-02-05 10:28:25,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:25,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:26,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:26,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:26,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:26,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554711057] [2024-02-05 10:28:26,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554711057] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:26,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:26,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-05 10:28:26,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853375756] [2024-02-05 10:28:26,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:26,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-05 10:28:26,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:26,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-05 10:28:26,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-02-05 10:28:26,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-05 10:28:26,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 336 transitions, 4964 flow. Second operand has 5 states, 5 states have (on average 33.8) internal successors, (169), 5 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:26,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:26,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-05 10:28:26,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:26,635 INFO L124 PetriNetUnfolderBase]: 1246/2412 cut-off events. [2024-02-05 10:28:26,636 INFO L125 PetriNetUnfolderBase]: For 41286/41493 co-relation queries the response was YES. [2024-02-05 10:28:26,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14405 conditions, 2412 events. 1246/2412 cut-off events. For 41286/41493 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 16208 event pairs, 285 based on Foata normal form. 133/2394 useless extension candidates. Maximal degree in co-relation 14297. Up to 966 conditions per place. [2024-02-05 10:28:26,658 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 209 selfloop transitions, 86 changer transitions 1/337 dead transitions. [2024-02-05 10:28:26,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 337 transitions, 5556 flow [2024-02-05 10:28:26,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-05 10:28:26,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-05 10:28:26,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 208 transitions. [2024-02-05 10:28:26,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5698630136986301 [2024-02-05 10:28:26,659 INFO L175 Difference]: Start difference. First operand has 281 places, 336 transitions, 4964 flow. Second operand 5 states and 208 transitions. [2024-02-05 10:28:26,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 337 transitions, 5556 flow [2024-02-05 10:28:26,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 337 transitions, 5389 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-02-05 10:28:26,798 INFO L231 Difference]: Finished difference. Result has 279 places, 325 transitions, 4994 flow [2024-02-05 10:28:26,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4723, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4994, PETRI_PLACES=279, PETRI_TRANSITIONS=325} [2024-02-05 10:28:26,799 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 202 predicate places. [2024-02-05 10:28:26,799 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 325 transitions, 4994 flow [2024-02-05 10:28:26,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.8) internal successors, (169), 5 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:26,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:26,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:26,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-02-05 10:28:26,799 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:26,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:26,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1584332732, now seen corresponding path program 2 times [2024-02-05 10:28:26,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:26,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109528965] [2024-02-05 10:28:26,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:26,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:26,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:27,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:27,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:27,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109528965] [2024-02-05 10:28:27,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109528965] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:27,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:27,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:28:27,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274067850] [2024-02-05 10:28:27,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:27,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:28:27,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:27,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:28:27,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:28:27,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:27,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 325 transitions, 4994 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:27,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:27,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:27,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:27,744 INFO L124 PetriNetUnfolderBase]: 1677/3050 cut-off events. [2024-02-05 10:28:27,744 INFO L125 PetriNetUnfolderBase]: For 41636/41915 co-relation queries the response was YES. [2024-02-05 10:28:27,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17509 conditions, 3050 events. 1677/3050 cut-off events. For 41636/41915 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 19550 event pairs, 328 based on Foata normal form. 81/3026 useless extension candidates. Maximal degree in co-relation 17402. Up to 2549 conditions per place. [2024-02-05 10:28:27,778 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 269 selfloop transitions, 45 changer transitions 0/340 dead transitions. [2024-02-05 10:28:27,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 340 transitions, 5672 flow [2024-02-05 10:28:27,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-05 10:28:27,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-05 10:28:27,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 190 transitions. [2024-02-05 10:28:27,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4337899543378995 [2024-02-05 10:28:27,779 INFO L175 Difference]: Start difference. First operand has 279 places, 325 transitions, 4994 flow. Second operand 6 states and 190 transitions. [2024-02-05 10:28:27,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 340 transitions, 5672 flow [2024-02-05 10:28:27,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 340 transitions, 5463 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-02-05 10:28:27,996 INFO L231 Difference]: Finished difference. Result has 279 places, 326 transitions, 4891 flow [2024-02-05 10:28:27,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4786, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4891, PETRI_PLACES=279, PETRI_TRANSITIONS=326} [2024-02-05 10:28:27,997 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 202 predicate places. [2024-02-05 10:28:27,997 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 326 transitions, 4891 flow [2024-02-05 10:28:27,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:27,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:27,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:27,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-02-05 10:28:27,998 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:27,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:27,999 INFO L85 PathProgramCache]: Analyzing trace with hash 2065502928, now seen corresponding path program 3 times [2024-02-05 10:28:27,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:27,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864554811] [2024-02-05 10:28:27,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:27,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:28,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:28,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:28,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:28,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864554811] [2024-02-05 10:28:28,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864554811] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:28,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:28,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:28:28,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475018806] [2024-02-05 10:28:28,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:28,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:28:28,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:28,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:28:28,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:28:28,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:28,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 326 transitions, 4891 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:28,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:28,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:28,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:28,935 INFO L124 PetriNetUnfolderBase]: 1677/3053 cut-off events. [2024-02-05 10:28:28,936 INFO L125 PetriNetUnfolderBase]: For 38956/39195 co-relation queries the response was YES. [2024-02-05 10:28:28,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17161 conditions, 3053 events. 1677/3053 cut-off events. For 38956/39195 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 19605 event pairs, 309 based on Foata normal form. 80/3031 useless extension candidates. Maximal degree in co-relation 17056. Up to 2551 conditions per place. [2024-02-05 10:28:28,968 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 269 selfloop transitions, 44 changer transitions 0/339 dead transitions. [2024-02-05 10:28:28,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 339 transitions, 5559 flow [2024-02-05 10:28:28,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-05 10:28:28,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-05 10:28:28,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 187 transitions. [2024-02-05 10:28:28,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4269406392694064 [2024-02-05 10:28:28,969 INFO L175 Difference]: Start difference. First operand has 279 places, 326 transitions, 4891 flow. Second operand 6 states and 187 transitions. [2024-02-05 10:28:28,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 339 transitions, 5559 flow [2024-02-05 10:28:29,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 339 transitions, 5494 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-02-05 10:28:29,162 INFO L231 Difference]: Finished difference. Result has 280 places, 327 transitions, 4929 flow [2024-02-05 10:28:29,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4827, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4929, PETRI_PLACES=280, PETRI_TRANSITIONS=327} [2024-02-05 10:28:29,163 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 203 predicate places. [2024-02-05 10:28:29,163 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 327 transitions, 4929 flow [2024-02-05 10:28:29,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:29,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:29,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:29,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-02-05 10:28:29,164 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:29,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:29,164 INFO L85 PathProgramCache]: Analyzing trace with hash 2065539198, now seen corresponding path program 4 times [2024-02-05 10:28:29,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:29,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71635198] [2024-02-05 10:28:29,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:29,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:29,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:29,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:29,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:29,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71635198] [2024-02-05 10:28:29,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71635198] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:29,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:29,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:28:29,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556400333] [2024-02-05 10:28:29,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:29,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:28:29,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:29,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:28:29,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:28:29,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:29,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 327 transitions, 4929 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:29,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:29,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:29,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:30,006 INFO L124 PetriNetUnfolderBase]: 1674/3044 cut-off events. [2024-02-05 10:28:30,006 INFO L125 PetriNetUnfolderBase]: For 39134/39373 co-relation queries the response was YES. [2024-02-05 10:28:30,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17108 conditions, 3044 events. 1674/3044 cut-off events. For 39134/39373 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 19474 event pairs, 309 based on Foata normal form. 76/3018 useless extension candidates. Maximal degree in co-relation 17004. Up to 2551 conditions per place. [2024-02-05 10:28:30,038 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 263 selfloop transitions, 48 changer transitions 0/337 dead transitions. [2024-02-05 10:28:30,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 337 transitions, 5565 flow [2024-02-05 10:28:30,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-05 10:28:30,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-05 10:28:30,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 185 transitions. [2024-02-05 10:28:30,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4223744292237443 [2024-02-05 10:28:30,040 INFO L175 Difference]: Start difference. First operand has 280 places, 327 transitions, 4929 flow. Second operand 6 states and 185 transitions. [2024-02-05 10:28:30,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 337 transitions, 5565 flow [2024-02-05 10:28:30,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 337 transitions, 5404 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-02-05 10:28:30,245 INFO L231 Difference]: Finished difference. Result has 274 places, 326 transitions, 4848 flow [2024-02-05 10:28:30,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4752, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4848, PETRI_PLACES=274, PETRI_TRANSITIONS=326} [2024-02-05 10:28:30,246 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 197 predicate places. [2024-02-05 10:28:30,246 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 326 transitions, 4848 flow [2024-02-05 10:28:30,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:30,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:30,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:30,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-02-05 10:28:30,247 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:30,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:30,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1824643736, now seen corresponding path program 5 times [2024-02-05 10:28:30,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:30,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378329672] [2024-02-05 10:28:30,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:30,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:30,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:30,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:30,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:30,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378329672] [2024-02-05 10:28:30,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378329672] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:30,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:30,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:28:30,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43075574] [2024-02-05 10:28:30,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:30,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:28:30,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:30,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:28:30,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:28:30,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:30,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 326 transitions, 4848 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:30,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:30,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:30,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:31,082 INFO L124 PetriNetUnfolderBase]: 1680/3045 cut-off events. [2024-02-05 10:28:31,082 INFO L125 PetriNetUnfolderBase]: For 38680/38967 co-relation queries the response was YES. [2024-02-05 10:28:31,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17081 conditions, 3045 events. 1680/3045 cut-off events. For 38680/38967 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 19467 event pairs, 347 based on Foata normal form. 65/3004 useless extension candidates. Maximal degree in co-relation 16983. Up to 2525 conditions per place. [2024-02-05 10:28:31,113 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 256 selfloop transitions, 63 changer transitions 0/345 dead transitions. [2024-02-05 10:28:31,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 345 transitions, 5545 flow [2024-02-05 10:28:31,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:28:31,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:28:31,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 245 transitions. [2024-02-05 10:28:31,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4195205479452055 [2024-02-05 10:28:31,115 INFO L175 Difference]: Start difference. First operand has 274 places, 326 transitions, 4848 flow. Second operand 8 states and 245 transitions. [2024-02-05 10:28:31,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 345 transitions, 5545 flow [2024-02-05 10:28:31,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 345 transitions, 5427 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-02-05 10:28:31,300 INFO L231 Difference]: Finished difference. Result has 276 places, 326 transitions, 4870 flow [2024-02-05 10:28:31,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4730, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4870, PETRI_PLACES=276, PETRI_TRANSITIONS=326} [2024-02-05 10:28:31,301 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 199 predicate places. [2024-02-05 10:28:31,301 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 326 transitions, 4870 flow [2024-02-05 10:28:31,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:31,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:31,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:31,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-02-05 10:28:31,302 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:31,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:31,302 INFO L85 PathProgramCache]: Analyzing trace with hash -2049550632, now seen corresponding path program 6 times [2024-02-05 10:28:31,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:31,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114517238] [2024-02-05 10:28:31,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:31,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:31,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:31,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:31,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:31,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114517238] [2024-02-05 10:28:31,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114517238] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:31,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:31,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:28:31,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931814690] [2024-02-05 10:28:31,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:31,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:28:31,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:31,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:28:31,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:28:31,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:31,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 326 transitions, 4870 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:31,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:31,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:31,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:32,170 INFO L124 PetriNetUnfolderBase]: 1698/3077 cut-off events. [2024-02-05 10:28:32,170 INFO L125 PetriNetUnfolderBase]: For 39350/39633 co-relation queries the response was YES. [2024-02-05 10:28:32,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17247 conditions, 3077 events. 1698/3077 cut-off events. For 39350/39633 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 19770 event pairs, 296 based on Foata normal form. 81/3049 useless extension candidates. Maximal degree in co-relation 17149. Up to 2083 conditions per place. [2024-02-05 10:28:32,198 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 243 selfloop transitions, 91 changer transitions 0/360 dead transitions. [2024-02-05 10:28:32,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 360 transitions, 5708 flow [2024-02-05 10:28:32,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:28:32,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:28:32,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 254 transitions. [2024-02-05 10:28:32,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4349315068493151 [2024-02-05 10:28:32,199 INFO L175 Difference]: Start difference. First operand has 276 places, 326 transitions, 4870 flow. Second operand 8 states and 254 transitions. [2024-02-05 10:28:32,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 360 transitions, 5708 flow [2024-02-05 10:28:32,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 360 transitions, 5535 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-02-05 10:28:32,362 INFO L231 Difference]: Finished difference. Result has 276 places, 331 transitions, 4934 flow [2024-02-05 10:28:32,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4705, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4934, PETRI_PLACES=276, PETRI_TRANSITIONS=331} [2024-02-05 10:28:32,363 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 199 predicate places. [2024-02-05 10:28:32,363 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 331 transitions, 4934 flow [2024-02-05 10:28:32,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:32,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:32,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:32,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-02-05 10:28:32,364 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:32,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:32,365 INFO L85 PathProgramCache]: Analyzing trace with hash 99392834, now seen corresponding path program 7 times [2024-02-05 10:28:32,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:32,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312127607] [2024-02-05 10:28:32,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:32,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:32,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:32,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:32,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:32,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312127607] [2024-02-05 10:28:32,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312127607] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:32,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:32,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:28:32,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119390033] [2024-02-05 10:28:32,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:32,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:28:32,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:32,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:28:32,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:28:32,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:32,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 331 transitions, 4934 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:32,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:32,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:32,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:33,190 INFO L124 PetriNetUnfolderBase]: 1746/3131 cut-off events. [2024-02-05 10:28:33,191 INFO L125 PetriNetUnfolderBase]: For 40440/40700 co-relation queries the response was YES. [2024-02-05 10:28:33,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17765 conditions, 3131 events. 1746/3131 cut-off events. For 40440/40700 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 19827 event pairs, 278 based on Foata normal form. 98/3113 useless extension candidates. Maximal degree in co-relation 17667. Up to 2131 conditions per place. [2024-02-05 10:28:33,225 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 233 selfloop transitions, 106 changer transitions 0/365 dead transitions. [2024-02-05 10:28:33,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 365 transitions, 5813 flow [2024-02-05 10:28:33,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:28:33,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:28:33,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 250 transitions. [2024-02-05 10:28:33,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4280821917808219 [2024-02-05 10:28:33,227 INFO L175 Difference]: Start difference. First operand has 276 places, 331 transitions, 4934 flow. Second operand 8 states and 250 transitions. [2024-02-05 10:28:33,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 365 transitions, 5813 flow [2024-02-05 10:28:33,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 365 transitions, 5645 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-02-05 10:28:33,408 INFO L231 Difference]: Finished difference. Result has 279 places, 342 transitions, 5137 flow [2024-02-05 10:28:33,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4792, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5137, PETRI_PLACES=279, PETRI_TRANSITIONS=342} [2024-02-05 10:28:33,409 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 202 predicate places. [2024-02-05 10:28:33,409 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 342 transitions, 5137 flow [2024-02-05 10:28:33,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:33,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:33,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:33,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-02-05 10:28:33,409 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:33,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:33,410 INFO L85 PathProgramCache]: Analyzing trace with hash -2018094312, now seen corresponding path program 8 times [2024-02-05 10:28:33,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:33,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416529641] [2024-02-05 10:28:33,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:33,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:33,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:33,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:33,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:33,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416529641] [2024-02-05 10:28:33,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416529641] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:33,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:33,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:28:33,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277692169] [2024-02-05 10:28:33,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:33,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:28:33,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:33,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:28:33,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:28:33,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:33,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 342 transitions, 5137 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:33,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:33,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:33,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:34,240 INFO L124 PetriNetUnfolderBase]: 1704/3087 cut-off events. [2024-02-05 10:28:34,240 INFO L125 PetriNetUnfolderBase]: For 40398/40683 co-relation queries the response was YES. [2024-02-05 10:28:34,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17636 conditions, 3087 events. 1704/3087 cut-off events. For 40398/40683 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 19782 event pairs, 302 based on Foata normal form. 61/3039 useless extension candidates. Maximal degree in co-relation 17538. Up to 2095 conditions per place. [2024-02-05 10:28:34,271 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 235 selfloop transitions, 106 changer transitions 0/367 dead transitions. [2024-02-05 10:28:34,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 367 transitions, 5925 flow [2024-02-05 10:28:34,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:28:34,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:28:34,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 251 transitions. [2024-02-05 10:28:34,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4297945205479452 [2024-02-05 10:28:34,274 INFO L175 Difference]: Start difference. First operand has 279 places, 342 transitions, 5137 flow. Second operand 8 states and 251 transitions. [2024-02-05 10:28:34,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 367 transitions, 5925 flow [2024-02-05 10:28:34,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 367 transitions, 5759 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-02-05 10:28:34,452 INFO L231 Difference]: Finished difference. Result has 281 places, 342 transitions, 5193 flow [2024-02-05 10:28:34,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4973, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5193, PETRI_PLACES=281, PETRI_TRANSITIONS=342} [2024-02-05 10:28:34,452 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 204 predicate places. [2024-02-05 10:28:34,453 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 342 transitions, 5193 flow [2024-02-05 10:28:34,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:34,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:34,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:34,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-02-05 10:28:34,453 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:34,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:34,454 INFO L85 PathProgramCache]: Analyzing trace with hash 130849154, now seen corresponding path program 9 times [2024-02-05 10:28:34,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:34,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074218820] [2024-02-05 10:28:34,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:34,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:34,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:34,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:34,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:34,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074218820] [2024-02-05 10:28:34,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074218820] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:34,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:34,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:28:34,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799998660] [2024-02-05 10:28:34,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:34,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:28:34,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:34,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:28:34,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:28:34,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:34,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 342 transitions, 5193 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:34,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:34,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:34,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:35,306 INFO L124 PetriNetUnfolderBase]: 1770/3171 cut-off events. [2024-02-05 10:28:35,306 INFO L125 PetriNetUnfolderBase]: For 42636/42900 co-relation queries the response was YES. [2024-02-05 10:28:35,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18212 conditions, 3171 events. 1770/3171 cut-off events. For 42636/42900 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 20128 event pairs, 278 based on Foata normal form. 98/3153 useless extension candidates. Maximal degree in co-relation 18114. Up to 2147 conditions per place. [2024-02-05 10:28:35,336 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 231 selfloop transitions, 116 changer transitions 0/373 dead transitions. [2024-02-05 10:28:35,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 373 transitions, 6078 flow [2024-02-05 10:28:35,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:28:35,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:28:35,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 250 transitions. [2024-02-05 10:28:35,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4280821917808219 [2024-02-05 10:28:35,337 INFO L175 Difference]: Start difference. First operand has 281 places, 342 transitions, 5193 flow. Second operand 8 states and 250 transitions. [2024-02-05 10:28:35,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 373 transitions, 6078 flow [2024-02-05 10:28:35,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 373 transitions, 5882 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-02-05 10:28:35,538 INFO L231 Difference]: Finished difference. Result has 283 places, 350 transitions, 5330 flow [2024-02-05 10:28:35,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=5015, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5330, PETRI_PLACES=283, PETRI_TRANSITIONS=350} [2024-02-05 10:28:35,538 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 206 predicate places. [2024-02-05 10:28:35,539 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 350 transitions, 5330 flow [2024-02-05 10:28:35,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:35,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:35,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:35,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-02-05 10:28:35,539 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:35,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:35,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1163107304, now seen corresponding path program 10 times [2024-02-05 10:28:35,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:35,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313467397] [2024-02-05 10:28:35,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:35,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:35,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:35,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:35,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:35,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313467397] [2024-02-05 10:28:35,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313467397] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:35,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:35,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:28:35,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027276067] [2024-02-05 10:28:35,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:35,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:28:35,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:35,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:28:35,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:28:35,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:35,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 350 transitions, 5330 flow. Second operand has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:35,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:35,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:35,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:36,381 INFO L124 PetriNetUnfolderBase]: 1782/3191 cut-off events. [2024-02-05 10:28:36,382 INFO L125 PetriNetUnfolderBase]: For 43534/43798 co-relation queries the response was YES. [2024-02-05 10:28:36,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18342 conditions, 3191 events. 1782/3191 cut-off events. For 43534/43798 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 20253 event pairs, 296 based on Foata normal form. 72/3147 useless extension candidates. Maximal degree in co-relation 18244. Up to 2159 conditions per place. [2024-02-05 10:28:36,414 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 225 selfloop transitions, 126 changer transitions 0/377 dead transitions. [2024-02-05 10:28:36,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 377 transitions, 6174 flow [2024-02-05 10:28:36,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:28:36,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:28:36,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 247 transitions. [2024-02-05 10:28:36,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4229452054794521 [2024-02-05 10:28:36,415 INFO L175 Difference]: Start difference. First operand has 283 places, 350 transitions, 5330 flow. Second operand 8 states and 247 transitions. [2024-02-05 10:28:36,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 377 transitions, 6174 flow [2024-02-05 10:28:36,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 377 transitions, 6004 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-02-05 10:28:36,632 INFO L231 Difference]: Finished difference. Result has 288 places, 357 transitions, 5542 flow [2024-02-05 10:28:36,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=5166, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5542, PETRI_PLACES=288, PETRI_TRANSITIONS=357} [2024-02-05 10:28:36,633 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 211 predicate places. [2024-02-05 10:28:36,633 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 357 transitions, 5542 flow [2024-02-05 10:28:36,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 22.555555555555557) internal successors, (203), 9 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:36,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:36,633 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] [2024-02-05 10:28:36,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-02-05 10:28:36,633 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:36,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:36,634 INFO L85 PathProgramCache]: Analyzing trace with hash 948710849, now seen corresponding path program 1 times [2024-02-05 10:28:36,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:36,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698840655] [2024-02-05 10:28:36,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:36,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:36,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:36,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:36,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:36,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698840655] [2024-02-05 10:28:36,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698840655] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:36,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:36,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:28:36,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749263385] [2024-02-05 10:28:36,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:36,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:28:36,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:36,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:28:36,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:28:36,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:36,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 357 transitions, 5542 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:36,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:36,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:36,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:37,602 INFO L124 PetriNetUnfolderBase]: 1728/3182 cut-off events. [2024-02-05 10:28:37,603 INFO L125 PetriNetUnfolderBase]: For 46673/46829 co-relation queries the response was YES. [2024-02-05 10:28:37,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18420 conditions, 3182 events. 1728/3182 cut-off events. For 46673/46829 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 20967 event pairs, 384 based on Foata normal form. 40/3109 useless extension candidates. Maximal degree in co-relation 18320. Up to 2562 conditions per place. [2024-02-05 10:28:37,646 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 281 selfloop transitions, 63 changer transitions 0/370 dead transitions. [2024-02-05 10:28:37,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 370 transitions, 6283 flow [2024-02-05 10:28:37,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:28:37,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:28:37,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 213 transitions. [2024-02-05 10:28:37,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41682974559686886 [2024-02-05 10:28:37,648 INFO L175 Difference]: Start difference. First operand has 288 places, 357 transitions, 5542 flow. Second operand 7 states and 213 transitions. [2024-02-05 10:28:37,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 370 transitions, 6283 flow [2024-02-05 10:28:37,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 370 transitions, 6138 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-02-05 10:28:37,860 INFO L231 Difference]: Finished difference. Result has 289 places, 358 transitions, 5553 flow [2024-02-05 10:28:37,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=5397, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5553, PETRI_PLACES=289, PETRI_TRANSITIONS=358} [2024-02-05 10:28:37,861 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 212 predicate places. [2024-02-05 10:28:37,861 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 358 transitions, 5553 flow [2024-02-05 10:28:37,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:37,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:37,861 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] [2024-02-05 10:28:37,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-02-05 10:28:37,861 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:37,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:37,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1917274705, now seen corresponding path program 1 times [2024-02-05 10:28:37,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:37,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411856276] [2024-02-05 10:28:37,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:37,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:37,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:38,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:38,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:38,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411856276] [2024-02-05 10:28:38,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411856276] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:38,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:38,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:28:38,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114243501] [2024-02-05 10:28:38,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:38,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:28:38,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:38,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:28:38,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:28:38,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:38,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 358 transitions, 5553 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:38,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:38,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:38,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:39,130 INFO L124 PetriNetUnfolderBase]: 1981/3578 cut-off events. [2024-02-05 10:28:39,130 INFO L125 PetriNetUnfolderBase]: For 54918/55210 co-relation queries the response was YES. [2024-02-05 10:28:39,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20583 conditions, 3578 events. 1981/3578 cut-off events. For 54918/55210 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 23332 event pairs, 424 based on Foata normal form. 91/3566 useless extension candidates. Maximal degree in co-relation 20484. Up to 2459 conditions per place. [2024-02-05 10:28:39,180 INFO L140 encePairwiseOnDemand]: 61/73 looper letters, 321 selfloop transitions, 95 changer transitions 0/442 dead transitions. [2024-02-05 10:28:39,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 442 transitions, 7084 flow [2024-02-05 10:28:39,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-05 10:28:39,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-05 10:28:39,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 379 transitions. [2024-02-05 10:28:39,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.432648401826484 [2024-02-05 10:28:39,182 INFO L175 Difference]: Start difference. First operand has 289 places, 358 transitions, 5553 flow. Second operand 12 states and 379 transitions. [2024-02-05 10:28:39,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 442 transitions, 7084 flow [2024-02-05 10:28:39,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 442 transitions, 6967 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-02-05 10:28:39,472 INFO L231 Difference]: Finished difference. Result has 298 places, 378 transitions, 5917 flow [2024-02-05 10:28:39,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=5439, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5917, PETRI_PLACES=298, PETRI_TRANSITIONS=378} [2024-02-05 10:28:39,472 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 221 predicate places. [2024-02-05 10:28:39,473 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 378 transitions, 5917 flow [2024-02-05 10:28:39,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:39,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:39,473 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] [2024-02-05 10:28:39,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-02-05 10:28:39,473 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:39,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:39,474 INFO L85 PathProgramCache]: Analyzing trace with hash -2110024271, now seen corresponding path program 1 times [2024-02-05 10:28:39,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:39,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659320347] [2024-02-05 10:28:39,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:39,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:39,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:39,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:39,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:39,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659320347] [2024-02-05 10:28:39,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659320347] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:39,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:39,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:28:39,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75658467] [2024-02-05 10:28:39,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:39,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:28:39,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:39,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:28:39,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:28:39,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:39,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 378 transitions, 5917 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:39,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:39,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:39,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:40,742 INFO L124 PetriNetUnfolderBase]: 2154/3935 cut-off events. [2024-02-05 10:28:40,743 INFO L125 PetriNetUnfolderBase]: For 67878/68048 co-relation queries the response was YES. [2024-02-05 10:28:40,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23300 conditions, 3935 events. 2154/3935 cut-off events. For 67878/68048 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 26444 event pairs, 547 based on Foata normal form. 78/3913 useless extension candidates. Maximal degree in co-relation 23198. Up to 2530 conditions per place. [2024-02-05 10:28:40,789 INFO L140 encePairwiseOnDemand]: 61/73 looper letters, 331 selfloop transitions, 101 changer transitions 0/458 dead transitions. [2024-02-05 10:28:40,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 458 transitions, 7567 flow [2024-02-05 10:28:40,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-05 10:28:40,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-05 10:28:40,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 375 transitions. [2024-02-05 10:28:40,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4280821917808219 [2024-02-05 10:28:40,791 INFO L175 Difference]: Start difference. First operand has 298 places, 378 transitions, 5917 flow. Second operand 12 states and 375 transitions. [2024-02-05 10:28:40,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 458 transitions, 7567 flow [2024-02-05 10:28:41,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 458 transitions, 7461 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-02-05 10:28:41,081 INFO L231 Difference]: Finished difference. Result has 305 places, 394 transitions, 6291 flow [2024-02-05 10:28:41,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=5811, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6291, PETRI_PLACES=305, PETRI_TRANSITIONS=394} [2024-02-05 10:28:41,082 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 228 predicate places. [2024-02-05 10:28:41,082 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 394 transitions, 6291 flow [2024-02-05 10:28:41,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:41,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:41,082 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] [2024-02-05 10:28:41,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-02-05 10:28:41,082 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:41,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:41,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1118963363, now seen corresponding path program 2 times [2024-02-05 10:28:41,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:41,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161442367] [2024-02-05 10:28:41,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:41,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:41,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:41,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:41,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:41,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161442367] [2024-02-05 10:28:41,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161442367] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:41,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:41,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:28:41,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679654580] [2024-02-05 10:28:41,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:41,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:28:41,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:41,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:28:41,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:28:41,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:41,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 394 transitions, 6291 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:41,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:41,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:41,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:42,154 INFO L124 PetriNetUnfolderBase]: 2188/3978 cut-off events. [2024-02-05 10:28:42,155 INFO L125 PetriNetUnfolderBase]: For 68565/68751 co-relation queries the response was YES. [2024-02-05 10:28:42,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24280 conditions, 3978 events. 2188/3978 cut-off events. For 68565/68751 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 26656 event pairs, 509 based on Foata normal form. 58/3914 useless extension candidates. Maximal degree in co-relation 24174. Up to 3028 conditions per place. [2024-02-05 10:28:42,193 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 313 selfloop transitions, 75 changer transitions 0/414 dead transitions. [2024-02-05 10:28:42,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 414 transitions, 7156 flow [2024-02-05 10:28:42,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:28:42,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:28:42,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 218 transitions. [2024-02-05 10:28:42,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42661448140900193 [2024-02-05 10:28:42,194 INFO L175 Difference]: Start difference. First operand has 305 places, 394 transitions, 6291 flow. Second operand 7 states and 218 transitions. [2024-02-05 10:28:42,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 414 transitions, 7156 flow [2024-02-05 10:28:42,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 414 transitions, 7027 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-02-05 10:28:42,483 INFO L231 Difference]: Finished difference. Result has 308 places, 397 transitions, 6380 flow [2024-02-05 10:28:42,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=6162, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6380, PETRI_PLACES=308, PETRI_TRANSITIONS=397} [2024-02-05 10:28:42,483 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 231 predicate places. [2024-02-05 10:28:42,483 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 397 transitions, 6380 flow [2024-02-05 10:28:42,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:42,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:42,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:42,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-02-05 10:28:42,484 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:42,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:42,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1508271447, now seen corresponding path program 1 times [2024-02-05 10:28:42,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:42,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610199041] [2024-02-05 10:28:42,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:42,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:42,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:42,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:42,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:42,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610199041] [2024-02-05 10:28:42,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610199041] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:42,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:42,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:28:42,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102045436] [2024-02-05 10:28:42,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:42,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:28:42,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:42,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:28:42,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:28:42,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-05 10:28:42,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 397 transitions, 6380 flow. Second operand has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:42,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:42,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-05 10:28:42,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:43,368 INFO L124 PetriNetUnfolderBase]: 1721/3370 cut-off events. [2024-02-05 10:28:43,369 INFO L125 PetriNetUnfolderBase]: For 71129/71374 co-relation queries the response was YES. [2024-02-05 10:28:43,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21207 conditions, 3370 events. 1721/3370 cut-off events. For 71129/71374 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 24132 event pairs, 236 based on Foata normal form. 116/3378 useless extension candidates. Maximal degree in co-relation 21099. Up to 1115 conditions per place. [2024-02-05 10:28:43,407 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 262 selfloop transitions, 157 changer transitions 0/464 dead transitions. [2024-02-05 10:28:43,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 464 transitions, 7922 flow [2024-02-05 10:28:43,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-05 10:28:43,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-05 10:28:43,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 409 transitions. [2024-02-05 10:28:43,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5602739726027397 [2024-02-05 10:28:43,408 INFO L175 Difference]: Start difference. First operand has 308 places, 397 transitions, 6380 flow. Second operand 10 states and 409 transitions. [2024-02-05 10:28:43,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 464 transitions, 7922 flow [2024-02-05 10:28:43,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 464 transitions, 7837 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-02-05 10:28:43,670 INFO L231 Difference]: Finished difference. Result has 316 places, 404 transitions, 6722 flow [2024-02-05 10:28:43,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=6295, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6722, PETRI_PLACES=316, PETRI_TRANSITIONS=404} [2024-02-05 10:28:43,671 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 239 predicate places. [2024-02-05 10:28:43,671 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 404 transitions, 6722 flow [2024-02-05 10:28:43,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:43,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:43,671 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] [2024-02-05 10:28:43,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-02-05 10:28:43,672 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:43,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:43,672 INFO L85 PathProgramCache]: Analyzing trace with hash -2146578243, now seen corresponding path program 2 times [2024-02-05 10:28:43,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:43,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745128526] [2024-02-05 10:28:43,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:43,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:43,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:43,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:43,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:43,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745128526] [2024-02-05 10:28:43,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745128526] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:43,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:43,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:28:43,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948994743] [2024-02-05 10:28:43,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:43,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:28:43,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:43,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:28:43,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:28:43,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-05 10:28:43,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 404 transitions, 6722 flow. Second operand has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:43,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:43,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-05 10:28:43,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:44,620 INFO L124 PetriNetUnfolderBase]: 1753/3427 cut-off events. [2024-02-05 10:28:44,620 INFO L125 PetriNetUnfolderBase]: For 75246/75477 co-relation queries the response was YES. [2024-02-05 10:28:44,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22135 conditions, 3427 events. 1753/3427 cut-off events. For 75246/75477 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 24486 event pairs, 233 based on Foata normal form. 103/3421 useless extension candidates. Maximal degree in co-relation 22026. Up to 1127 conditions per place. [2024-02-05 10:28:44,661 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 270 selfloop transitions, 160 changer transitions 0/475 dead transitions. [2024-02-05 10:28:44,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 475 transitions, 8306 flow [2024-02-05 10:28:44,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-05 10:28:44,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-05 10:28:44,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 483 transitions. [2024-02-05 10:28:44,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5513698630136986 [2024-02-05 10:28:44,663 INFO L175 Difference]: Start difference. First operand has 316 places, 404 transitions, 6722 flow. Second operand 12 states and 483 transitions. [2024-02-05 10:28:44,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 475 transitions, 8306 flow [2024-02-05 10:28:44,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 475 transitions, 8062 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-02-05 10:28:45,002 INFO L231 Difference]: Finished difference. Result has 324 places, 407 transitions, 6862 flow [2024-02-05 10:28:45,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=6494, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6862, PETRI_PLACES=324, PETRI_TRANSITIONS=407} [2024-02-05 10:28:45,003 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 247 predicate places. [2024-02-05 10:28:45,003 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 407 transitions, 6862 flow [2024-02-05 10:28:45,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:45,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:45,004 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] [2024-02-05 10:28:45,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-02-05 10:28:45,004 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:45,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:45,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1698023937, now seen corresponding path program 3 times [2024-02-05 10:28:45,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:45,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996281294] [2024-02-05 10:28:45,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:45,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:45,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:45,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:45,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:45,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996281294] [2024-02-05 10:28:45,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996281294] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:45,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:45,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:28:45,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427994855] [2024-02-05 10:28:45,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:45,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:28:45,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:45,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:28:45,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:28:45,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:45,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 407 transitions, 6862 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:45,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:45,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:45,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:46,118 INFO L124 PetriNetUnfolderBase]: 2391/4333 cut-off events. [2024-02-05 10:28:46,118 INFO L125 PetriNetUnfolderBase]: For 84821/85014 co-relation queries the response was YES. [2024-02-05 10:28:46,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27873 conditions, 4333 events. 2391/4333 cut-off events. For 84821/85014 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 29401 event pairs, 552 based on Foata normal form. 58/4263 useless extension candidates. Maximal degree in co-relation 27761. Up to 3348 conditions per place. [2024-02-05 10:28:46,167 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 313 selfloop transitions, 105 changer transitions 0/444 dead transitions. [2024-02-05 10:28:46,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 444 transitions, 8179 flow [2024-02-05 10:28:46,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:28:46,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:28:46,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 246 transitions. [2024-02-05 10:28:46,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4212328767123288 [2024-02-05 10:28:46,168 INFO L175 Difference]: Start difference. First operand has 324 places, 407 transitions, 6862 flow. Second operand 8 states and 246 transitions. [2024-02-05 10:28:46,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 444 transitions, 8179 flow [2024-02-05 10:28:46,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 444 transitions, 7854 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-02-05 10:28:46,488 INFO L231 Difference]: Finished difference. Result has 325 places, 425 transitions, 7210 flow [2024-02-05 10:28:46,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=6559, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7210, PETRI_PLACES=325, PETRI_TRANSITIONS=425} [2024-02-05 10:28:46,488 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 248 predicate places. [2024-02-05 10:28:46,488 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 425 transitions, 7210 flow [2024-02-05 10:28:46,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:46,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:46,489 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] [2024-02-05 10:28:46,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-02-05 10:28:46,489 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:46,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:46,489 INFO L85 PathProgramCache]: Analyzing trace with hash 795892823, now seen corresponding path program 3 times [2024-02-05 10:28:46,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:46,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058235589] [2024-02-05 10:28:46,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:46,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:46,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:46,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:46,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:46,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058235589] [2024-02-05 10:28:46,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058235589] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:46,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:46,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:28:46,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360301346] [2024-02-05 10:28:46,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:46,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:28:46,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:46,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:28:46,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:28:46,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-05 10:28:46,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 425 transitions, 7210 flow. Second operand has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:46,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:46,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-05 10:28:46,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:47,505 INFO L124 PetriNetUnfolderBase]: 1823/3568 cut-off events. [2024-02-05 10:28:47,505 INFO L125 PetriNetUnfolderBase]: For 76735/76960 co-relation queries the response was YES. [2024-02-05 10:28:47,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23493 conditions, 3568 events. 1823/3568 cut-off events. For 76735/76960 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 25716 event pairs, 223 based on Foata normal form. 88/3537 useless extension candidates. Maximal degree in co-relation 23379. Up to 1155 conditions per place. [2024-02-05 10:28:47,552 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 233 selfloop transitions, 208 changer transitions 0/486 dead transitions. [2024-02-05 10:28:47,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 486 transitions, 8712 flow [2024-02-05 10:28:47,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-05 10:28:47,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-05 10:28:47,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 440 transitions. [2024-02-05 10:28:47,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.547945205479452 [2024-02-05 10:28:47,554 INFO L175 Difference]: Start difference. First operand has 325 places, 425 transitions, 7210 flow. Second operand 11 states and 440 transitions. [2024-02-05 10:28:47,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 486 transitions, 8712 flow [2024-02-05 10:28:47,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 486 transitions, 8588 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-02-05 10:28:47,907 INFO L231 Difference]: Finished difference. Result has 334 places, 440 transitions, 7822 flow [2024-02-05 10:28:47,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7086, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7822, PETRI_PLACES=334, PETRI_TRANSITIONS=440} [2024-02-05 10:28:47,907 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 257 predicate places. [2024-02-05 10:28:47,908 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 440 transitions, 7822 flow [2024-02-05 10:28:47,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:47,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:47,908 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] [2024-02-05 10:28:47,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-02-05 10:28:47,908 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:47,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:47,909 INFO L85 PathProgramCache]: Analyzing trace with hash 915529473, now seen corresponding path program 4 times [2024-02-05 10:28:47,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:47,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62322280] [2024-02-05 10:28:47,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:47,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:47,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:48,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:48,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:48,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62322280] [2024-02-05 10:28:48,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62322280] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:48,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:48,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:28:48,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590992631] [2024-02-05 10:28:48,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:48,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:28:48,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:48,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:28:48,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:28:48,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:48,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 440 transitions, 7822 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:48,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:48,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:48,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:49,061 INFO L124 PetriNetUnfolderBase]: 2417/4383 cut-off events. [2024-02-05 10:28:49,062 INFO L125 PetriNetUnfolderBase]: For 91743/91938 co-relation queries the response was YES. [2024-02-05 10:28:49,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29251 conditions, 4383 events. 2417/4383 cut-off events. For 91743/91938 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 29838 event pairs, 534 based on Foata normal form. 58/4313 useless extension candidates. Maximal degree in co-relation 29135. Up to 3394 conditions per place. [2024-02-05 10:28:49,112 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 329 selfloop transitions, 103 changer transitions 0/458 dead transitions. [2024-02-05 10:28:49,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 458 transitions, 8744 flow [2024-02-05 10:28:49,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:28:49,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:28:49,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 217 transitions. [2024-02-05 10:28:49,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4246575342465753 [2024-02-05 10:28:49,113 INFO L175 Difference]: Start difference. First operand has 334 places, 440 transitions, 7822 flow. Second operand 7 states and 217 transitions. [2024-02-05 10:28:49,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 458 transitions, 8744 flow [2024-02-05 10:28:49,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 458 transitions, 8341 flow, removed 8 selfloop flow, removed 13 redundant places. [2024-02-05 10:28:49,488 INFO L231 Difference]: Finished difference. Result has 327 places, 441 transitions, 7673 flow [2024-02-05 10:28:49,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7404, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7673, PETRI_PLACES=327, PETRI_TRANSITIONS=441} [2024-02-05 10:28:49,488 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 250 predicate places. [2024-02-05 10:28:49,489 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 441 transitions, 7673 flow [2024-02-05 10:28:49,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:49,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:49,489 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] [2024-02-05 10:28:49,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-02-05 10:28:49,489 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:49,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:49,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1630382081, now seen corresponding path program 4 times [2024-02-05 10:28:49,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:49,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001337366] [2024-02-05 10:28:49,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:49,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:49,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:49,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:49,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:49,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001337366] [2024-02-05 10:28:49,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001337366] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:49,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:49,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:28:49,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158063238] [2024-02-05 10:28:49,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:49,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:28:49,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:49,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:28:49,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:28:49,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-05 10:28:49,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 441 transitions, 7673 flow. Second operand has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:49,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:49,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-05 10:28:49,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:50,507 INFO L124 PetriNetUnfolderBase]: 1856/3621 cut-off events. [2024-02-05 10:28:50,507 INFO L125 PetriNetUnfolderBase]: For 86278/86504 co-relation queries the response was YES. [2024-02-05 10:28:50,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24210 conditions, 3621 events. 1856/3621 cut-off events. For 86278/86504 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 26037 event pairs, 283 based on Foata normal form. 100/3600 useless extension candidates. Maximal degree in co-relation 24100. Up to 1582 conditions per place. [2024-02-05 10:28:50,550 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 264 selfloop transitions, 173 changer transitions 0/483 dead transitions. [2024-02-05 10:28:50,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 483 transitions, 8971 flow [2024-02-05 10:28:50,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-05 10:28:50,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-05 10:28:50,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 334 transitions. [2024-02-05 10:28:50,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.571917808219178 [2024-02-05 10:28:50,551 INFO L175 Difference]: Start difference. First operand has 327 places, 441 transitions, 7673 flow. Second operand 8 states and 334 transitions. [2024-02-05 10:28:50,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 483 transitions, 8971 flow [2024-02-05 10:28:50,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 483 transitions, 8772 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-02-05 10:28:50,919 INFO L231 Difference]: Finished difference. Result has 330 places, 444 transitions, 7870 flow [2024-02-05 10:28:50,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7474, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7870, PETRI_PLACES=330, PETRI_TRANSITIONS=444} [2024-02-05 10:28:50,920 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 253 predicate places. [2024-02-05 10:28:50,920 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 444 transitions, 7870 flow [2024-02-05 10:28:50,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:50,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:50,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:50,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-02-05 10:28:50,921 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:50,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:50,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1112964419, now seen corresponding path program 5 times [2024-02-05 10:28:50,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:50,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150651340] [2024-02-05 10:28:50,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:50,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:50,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:51,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:51,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:51,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150651340] [2024-02-05 10:28:51,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150651340] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:51,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:51,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:28:51,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609501775] [2024-02-05 10:28:51,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:51,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:28:51,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:51,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:28:51,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:28:51,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-05 10:28:51,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 444 transitions, 7870 flow. Second operand has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:51,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:51,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-05 10:28:51,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:51,982 INFO L124 PetriNetUnfolderBase]: 1826/3582 cut-off events. [2024-02-05 10:28:51,982 INFO L125 PetriNetUnfolderBase]: For 85998/86220 co-relation queries the response was YES. [2024-02-05 10:28:52,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23917 conditions, 3582 events. 1826/3582 cut-off events. For 85998/86220 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 25811 event pairs, 270 based on Foata normal form. 105/3569 useless extension candidates. Maximal degree in co-relation 23807. Up to 1583 conditions per place. [2024-02-05 10:28:52,024 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 285 selfloop transitions, 157 changer transitions 0/488 dead transitions. [2024-02-05 10:28:52,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 488 transitions, 9210 flow [2024-02-05 10:28:52,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-05 10:28:52,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-05 10:28:52,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 370 transitions. [2024-02-05 10:28:52,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.563165905631659 [2024-02-05 10:28:52,026 INFO L175 Difference]: Start difference. First operand has 330 places, 444 transitions, 7870 flow. Second operand 9 states and 370 transitions. [2024-02-05 10:28:52,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 488 transitions, 9210 flow [2024-02-05 10:28:52,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 488 transitions, 8950 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-02-05 10:28:52,369 INFO L231 Difference]: Finished difference. Result has 334 places, 444 transitions, 7948 flow [2024-02-05 10:28:52,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7614, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7948, PETRI_PLACES=334, PETRI_TRANSITIONS=444} [2024-02-05 10:28:52,370 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 257 predicate places. [2024-02-05 10:28:52,370 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 444 transitions, 7948 flow [2024-02-05 10:28:52,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:52,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:52,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:28:52,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-02-05 10:28:52,371 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:52,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:52,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1827222057, now seen corresponding path program 1 times [2024-02-05 10:28:52,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:52,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45754652] [2024-02-05 10:28:52,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:52,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:52,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:52,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:52,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:52,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45754652] [2024-02-05 10:28:52,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45754652] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:52,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:52,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:28:52,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179064880] [2024-02-05 10:28:52,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:52,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:28:52,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:52,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:28:52,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:28:52,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:52,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 444 transitions, 7948 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:52,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:52,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:52,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:53,722 INFO L124 PetriNetUnfolderBase]: 2383/4343 cut-off events. [2024-02-05 10:28:53,722 INFO L125 PetriNetUnfolderBase]: For 91198/91514 co-relation queries the response was YES. [2024-02-05 10:28:53,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28065 conditions, 4343 events. 2383/4343 cut-off events. For 91198/91514 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 29548 event pairs, 640 based on Foata normal form. 41/4267 useless extension candidates. Maximal degree in co-relation 27955. Up to 3643 conditions per place. [2024-02-05 10:28:53,763 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 376 selfloop transitions, 68 changer transitions 0/472 dead transitions. [2024-02-05 10:28:53,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 472 transitions, 8980 flow [2024-02-05 10:28:53,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-05 10:28:53,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-05 10:28:53,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 271 transitions. [2024-02-05 10:28:53,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4124809741248097 [2024-02-05 10:28:53,765 INFO L175 Difference]: Start difference. First operand has 334 places, 444 transitions, 7948 flow. Second operand 9 states and 271 transitions. [2024-02-05 10:28:53,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 472 transitions, 8980 flow [2024-02-05 10:28:54,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 472 transitions, 8694 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-02-05 10:28:54,138 INFO L231 Difference]: Finished difference. Result has 337 places, 446 transitions, 7832 flow [2024-02-05 10:28:54,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7662, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7832, PETRI_PLACES=337, PETRI_TRANSITIONS=446} [2024-02-05 10:28:54,139 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 260 predicate places. [2024-02-05 10:28:54,139 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 446 transitions, 7832 flow [2024-02-05 10:28:54,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:54,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:54,140 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] [2024-02-05 10:28:54,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-02-05 10:28:54,140 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:54,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:54,140 INFO L85 PathProgramCache]: Analyzing trace with hash -687856329, now seen corresponding path program 1 times [2024-02-05 10:28:54,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:54,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58225842] [2024-02-05 10:28:54,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:54,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:54,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:54,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:54,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:54,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58225842] [2024-02-05 10:28:54,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58225842] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:54,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:54,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:28:54,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595973911] [2024-02-05 10:28:54,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:54,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:28:54,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:54,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:28:54,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:28:54,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-05 10:28:54,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 446 transitions, 7832 flow. Second operand has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:54,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:54,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-05 10:28:54,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:55,244 INFO L124 PetriNetUnfolderBase]: 1826/3591 cut-off events. [2024-02-05 10:28:55,244 INFO L125 PetriNetUnfolderBase]: For 82503/82722 co-relation queries the response was YES. [2024-02-05 10:28:55,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23353 conditions, 3591 events. 1826/3591 cut-off events. For 82503/82722 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 25934 event pairs, 257 based on Foata normal form. 97/3570 useless extension candidates. Maximal degree in co-relation 23242. Up to 1612 conditions per place. [2024-02-05 10:28:55,288 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 260 selfloop transitions, 182 changer transitions 0/488 dead transitions. [2024-02-05 10:28:55,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 488 transitions, 9095 flow [2024-02-05 10:28:55,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-05 10:28:55,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-05 10:28:55,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 400 transitions. [2024-02-05 10:28:55,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.547945205479452 [2024-02-05 10:28:55,289 INFO L175 Difference]: Start difference. First operand has 337 places, 446 transitions, 7832 flow. Second operand 10 states and 400 transitions. [2024-02-05 10:28:55,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 488 transitions, 9095 flow [2024-02-05 10:28:55,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 488 transitions, 9013 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-02-05 10:28:55,620 INFO L231 Difference]: Finished difference. Result has 343 places, 449 transitions, 8227 flow [2024-02-05 10:28:55,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7750, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8227, PETRI_PLACES=343, PETRI_TRANSITIONS=449} [2024-02-05 10:28:55,621 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 266 predicate places. [2024-02-05 10:28:55,621 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 449 transitions, 8227 flow [2024-02-05 10:28:55,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:55,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:55,621 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] [2024-02-05 10:28:55,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-02-05 10:28:55,621 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:55,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:55,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1487245647, now seen corresponding path program 2 times [2024-02-05 10:28:55,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:55,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685550577] [2024-02-05 10:28:55,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:55,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:55,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:55,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:55,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:55,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685550577] [2024-02-05 10:28:55,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685550577] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:55,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:55,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:28:55,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943477351] [2024-02-05 10:28:55,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:55,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:28:55,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:55,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:28:55,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:28:55,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:55,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 449 transitions, 8227 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:55,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:55,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:55,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:57,129 INFO L124 PetriNetUnfolderBase]: 2398/4354 cut-off events. [2024-02-05 10:28:57,130 INFO L125 PetriNetUnfolderBase]: For 92007/92335 co-relation queries the response was YES. [2024-02-05 10:28:57,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28557 conditions, 4354 events. 2398/4354 cut-off events. For 92007/92335 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 29575 event pairs, 621 based on Foata normal form. 53/4284 useless extension candidates. Maximal degree in co-relation 28443. Up to 3808 conditions per place. [2024-02-05 10:28:57,180 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 389 selfloop transitions, 56 changer transitions 0/473 dead transitions. [2024-02-05 10:28:57,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 473 transitions, 9226 flow [2024-02-05 10:28:57,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-05 10:28:57,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-05 10:28:57,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 270 transitions. [2024-02-05 10:28:57,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.410958904109589 [2024-02-05 10:28:57,182 INFO L175 Difference]: Start difference. First operand has 343 places, 449 transitions, 8227 flow. Second operand 9 states and 270 transitions. [2024-02-05 10:28:57,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 473 transitions, 9226 flow [2024-02-05 10:28:57,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 473 transitions, 8978 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-02-05 10:28:57,606 INFO L231 Difference]: Finished difference. Result has 347 places, 450 transitions, 8112 flow [2024-02-05 10:28:57,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7979, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8112, PETRI_PLACES=347, PETRI_TRANSITIONS=450} [2024-02-05 10:28:57,621 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 270 predicate places. [2024-02-05 10:28:57,621 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 450 transitions, 8112 flow [2024-02-05 10:28:57,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:57,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:57,621 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] [2024-02-05 10:28:57,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-02-05 10:28:57,622 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:57,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:57,622 INFO L85 PathProgramCache]: Analyzing trace with hash -783691291, now seen corresponding path program 3 times [2024-02-05 10:28:57,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:57,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924065529] [2024-02-05 10:28:57,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:57,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:57,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:57,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:57,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:57,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924065529] [2024-02-05 10:28:57,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924065529] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:57,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:57,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:28:57,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789060233] [2024-02-05 10:28:57,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:57,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:28:57,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:57,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:28:57,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:28:57,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:57,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 450 transitions, 8112 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:57,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:57,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:57,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:28:58,960 INFO L124 PetriNetUnfolderBase]: 2388/4362 cut-off events. [2024-02-05 10:28:58,960 INFO L125 PetriNetUnfolderBase]: For 87531/87850 co-relation queries the response was YES. [2024-02-05 10:28:58,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27990 conditions, 4362 events. 2388/4362 cut-off events. For 87531/87850 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 29844 event pairs, 550 based on Foata normal form. 53/4294 useless extension candidates. Maximal degree in co-relation 27875. Up to 3212 conditions per place. [2024-02-05 10:28:59,010 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 357 selfloop transitions, 99 changer transitions 0/484 dead transitions. [2024-02-05 10:28:59,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 484 transitions, 9200 flow [2024-02-05 10:28:59,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-05 10:28:59,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-05 10:28:59,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 279 transitions. [2024-02-05 10:28:59,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4246575342465753 [2024-02-05 10:28:59,011 INFO L175 Difference]: Start difference. First operand has 347 places, 450 transitions, 8112 flow. Second operand 9 states and 279 transitions. [2024-02-05 10:28:59,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 484 transitions, 9200 flow [2024-02-05 10:28:59,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 484 transitions, 9110 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-02-05 10:28:59,419 INFO L231 Difference]: Finished difference. Result has 350 places, 452 transitions, 8253 flow [2024-02-05 10:28:59,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8022, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8253, PETRI_PLACES=350, PETRI_TRANSITIONS=452} [2024-02-05 10:28:59,419 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 273 predicate places. [2024-02-05 10:28:59,420 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 452 transitions, 8253 flow [2024-02-05 10:28:59,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:59,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:28:59,420 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] [2024-02-05 10:28:59,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-02-05 10:28:59,420 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:28:59,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:28:59,421 INFO L85 PathProgramCache]: Analyzing trace with hash -752234971, now seen corresponding path program 4 times [2024-02-05 10:28:59,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:28:59,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950660265] [2024-02-05 10:28:59,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:28:59,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:28:59,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:28:59,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:28:59,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:28:59,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950660265] [2024-02-05 10:28:59,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950660265] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:28:59,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:28:59,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:28:59,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000270854] [2024-02-05 10:28:59,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:28:59,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:28:59,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:28:59,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:28:59,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:28:59,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:28:59,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 452 transitions, 8253 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:28:59,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:28:59,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:28:59,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:00,740 INFO L124 PetriNetUnfolderBase]: 2386/4351 cut-off events. [2024-02-05 10:29:00,740 INFO L125 PetriNetUnfolderBase]: For 88533/88858 co-relation queries the response was YES. [2024-02-05 10:29:00,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28156 conditions, 4351 events. 2386/4351 cut-off events. For 88533/88858 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 29719 event pairs, 561 based on Foata normal form. 43/4271 useless extension candidates. Maximal degree in co-relation 28040. Up to 3212 conditions per place. [2024-02-05 10:29:00,796 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 346 selfloop transitions, 107 changer transitions 0/481 dead transitions. [2024-02-05 10:29:00,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 481 transitions, 9283 flow [2024-02-05 10:29:00,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-05 10:29:00,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-05 10:29:00,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 276 transitions. [2024-02-05 10:29:00,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4200913242009132 [2024-02-05 10:29:00,798 INFO L175 Difference]: Start difference. First operand has 350 places, 452 transitions, 8253 flow. Second operand 9 states and 276 transitions. [2024-02-05 10:29:00,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 481 transitions, 9283 flow [2024-02-05 10:29:01,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 481 transitions, 9135 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-02-05 10:29:01,242 INFO L231 Difference]: Finished difference. Result has 354 places, 452 transitions, 8325 flow [2024-02-05 10:29:01,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8105, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8325, PETRI_PLACES=354, PETRI_TRANSITIONS=452} [2024-02-05 10:29:01,242 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 277 predicate places. [2024-02-05 10:29:01,242 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 452 transitions, 8325 flow [2024-02-05 10:29:01,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:01,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:01,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:01,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-02-05 10:29:01,243 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:01,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:01,253 INFO L85 PathProgramCache]: Analyzing trace with hash -2145464523, now seen corresponding path program 6 times [2024-02-05 10:29:01,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:01,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428476560] [2024-02-05 10:29:01,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:01,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:01,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:01,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:01,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:01,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428476560] [2024-02-05 10:29:01,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428476560] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:01,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:01,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:29:01,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672828932] [2024-02-05 10:29:01,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:01,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:29:01,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:01,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:29:01,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:29:01,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-05 10:29:01,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 452 transitions, 8325 flow. Second operand has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:01,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:01,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-05 10:29:01,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:02,188 INFO L124 PetriNetUnfolderBase]: 1806/3553 cut-off events. [2024-02-05 10:29:02,188 INFO L125 PetriNetUnfolderBase]: For 86476/86697 co-relation queries the response was YES. [2024-02-05 10:29:02,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23674 conditions, 3553 events. 1806/3553 cut-off events. For 86476/86697 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 25749 event pairs, 249 based on Foata normal form. 104/3531 useless extension candidates. Maximal degree in co-relation 23557. Up to 1633 conditions per place. [2024-02-05 10:29:02,230 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 289 selfloop transitions, 159 changer transitions 0/494 dead transitions. [2024-02-05 10:29:02,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 494 transitions, 9580 flow [2024-02-05 10:29:02,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-05 10:29:02,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-05 10:29:02,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 368 transitions. [2024-02-05 10:29:02,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5601217656012176 [2024-02-05 10:29:02,231 INFO L175 Difference]: Start difference. First operand has 354 places, 452 transitions, 8325 flow. Second operand 9 states and 368 transitions. [2024-02-05 10:29:02,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 494 transitions, 9580 flow [2024-02-05 10:29:02,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 494 transitions, 9437 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-02-05 10:29:02,558 INFO L231 Difference]: Finished difference. Result has 357 places, 452 transitions, 8522 flow [2024-02-05 10:29:02,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8182, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8522, PETRI_PLACES=357, PETRI_TRANSITIONS=452} [2024-02-05 10:29:02,558 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 280 predicate places. [2024-02-05 10:29:02,558 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 452 transitions, 8522 flow [2024-02-05 10:29:02,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:02,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:02,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:02,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-02-05 10:29:02,559 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:02,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:02,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1868462785, now seen corresponding path program 7 times [2024-02-05 10:29:02,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:02,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150102414] [2024-02-05 10:29:02,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:02,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:02,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:02,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:02,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:02,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150102414] [2024-02-05 10:29:02,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150102414] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:02,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:02,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:29:02,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262059935] [2024-02-05 10:29:02,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:02,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:29:02,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:02,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:29:02,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:29:02,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-05 10:29:02,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 452 transitions, 8522 flow. Second operand has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:02,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:02,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-05 10:29:02,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:03,590 INFO L124 PetriNetUnfolderBase]: 1811/3575 cut-off events. [2024-02-05 10:29:03,590 INFO L125 PetriNetUnfolderBase]: For 88310/88528 co-relation queries the response was YES. [2024-02-05 10:29:03,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23981 conditions, 3575 events. 1811/3575 cut-off events. For 88310/88528 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 26030 event pairs, 222 based on Foata normal form. 101/3553 useless extension candidates. Maximal degree in co-relation 23863. Up to 1111 conditions per place. [2024-02-05 10:29:03,631 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 271 selfloop transitions, 190 changer transitions 0/507 dead transitions. [2024-02-05 10:29:03,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 507 transitions, 9929 flow [2024-02-05 10:29:03,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-05 10:29:03,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-05 10:29:03,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 406 transitions. [2024-02-05 10:29:03,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5561643835616439 [2024-02-05 10:29:03,632 INFO L175 Difference]: Start difference. First operand has 357 places, 452 transitions, 8522 flow. Second operand 10 states and 406 transitions. [2024-02-05 10:29:03,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 507 transitions, 9929 flow [2024-02-05 10:29:03,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 507 transitions, 9639 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-02-05 10:29:03,985 INFO L231 Difference]: Finished difference. Result has 361 places, 460 transitions, 8763 flow [2024-02-05 10:29:03,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8232, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8763, PETRI_PLACES=361, PETRI_TRANSITIONS=460} [2024-02-05 10:29:03,986 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 284 predicate places. [2024-02-05 10:29:03,986 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 460 transitions, 8763 flow [2024-02-05 10:29:03,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:03,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:03,986 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] [2024-02-05 10:29:03,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-02-05 10:29:03,987 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:03,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:03,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1249175017, now seen corresponding path program 2 times [2024-02-05 10:29:03,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:03,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267253144] [2024-02-05 10:29:03,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:03,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:03,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:04,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:04,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:04,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267253144] [2024-02-05 10:29:04,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267253144] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:04,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:04,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:29:04,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875807115] [2024-02-05 10:29:04,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:04,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:29:04,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:04,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:29:04,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:29:04,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-05 10:29:04,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 460 transitions, 8763 flow. Second operand has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:04,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:04,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-05 10:29:04,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:05,070 INFO L124 PetriNetUnfolderBase]: 1843/3639 cut-off events. [2024-02-05 10:29:05,070 INFO L125 PetriNetUnfolderBase]: For 87560/87778 co-relation queries the response was YES. [2024-02-05 10:29:05,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24643 conditions, 3639 events. 1843/3639 cut-off events. For 87560/87778 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 26534 event pairs, 222 based on Foata normal form. 89/3605 useless extension candidates. Maximal degree in co-relation 24523. Up to 1123 conditions per place. [2024-02-05 10:29:05,117 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 277 selfloop transitions, 195 changer transitions 0/518 dead transitions. [2024-02-05 10:29:05,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 518 transitions, 10198 flow [2024-02-05 10:29:05,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-05 10:29:05,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-05 10:29:05,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 480 transitions. [2024-02-05 10:29:05,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.547945205479452 [2024-02-05 10:29:05,118 INFO L175 Difference]: Start difference. First operand has 361 places, 460 transitions, 8763 flow. Second operand 12 states and 480 transitions. [2024-02-05 10:29:05,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 518 transitions, 10198 flow [2024-02-05 10:29:05,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 518 transitions, 9534 flow, removed 32 selfloop flow, removed 11 redundant places. [2024-02-05 10:29:05,509 INFO L231 Difference]: Finished difference. Result has 363 places, 463 transitions, 8569 flow [2024-02-05 10:29:05,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8123, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=192, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8569, PETRI_PLACES=363, PETRI_TRANSITIONS=463} [2024-02-05 10:29:05,510 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 286 predicate places. [2024-02-05 10:29:05,510 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 463 transitions, 8569 flow [2024-02-05 10:29:05,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:05,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:05,511 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] [2024-02-05 10:29:05,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-02-05 10:29:05,511 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:05,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:05,511 INFO L85 PathProgramCache]: Analyzing trace with hash -2070646359, now seen corresponding path program 3 times [2024-02-05 10:29:05,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:05,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486071189] [2024-02-05 10:29:05,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:05,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:05,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:05,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:05,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:05,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486071189] [2024-02-05 10:29:05,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486071189] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:05,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:05,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-05 10:29:05,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456741662] [2024-02-05 10:29:05,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:05,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-05 10:29:05,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:05,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-05 10:29:05,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-02-05 10:29:05,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-02-05 10:29:05,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 463 transitions, 8569 flow. Second operand has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:05,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:05,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-02-05 10:29:05,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:06,693 INFO L124 PetriNetUnfolderBase]: 1842/3633 cut-off events. [2024-02-05 10:29:06,694 INFO L125 PetriNetUnfolderBase]: For 83862/84079 co-relation queries the response was YES. [2024-02-05 10:29:06,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23178 conditions, 3633 events. 1842/3633 cut-off events. For 83862/84079 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 26420 event pairs, 208 based on Foata normal form. 68/3575 useless extension candidates. Maximal degree in co-relation 23060. Up to 1127 conditions per place. [2024-02-05 10:29:06,763 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 231 selfloop transitions, 228 changer transitions 0/505 dead transitions. [2024-02-05 10:29:06,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 505 transitions, 9744 flow [2024-02-05 10:29:06,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-05 10:29:06,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-05 10:29:06,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 434 transitions. [2024-02-05 10:29:06,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5404732254047323 [2024-02-05 10:29:06,765 INFO L175 Difference]: Start difference. First operand has 363 places, 463 transitions, 8569 flow. Second operand 11 states and 434 transitions. [2024-02-05 10:29:06,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 505 transitions, 9744 flow [2024-02-05 10:29:07,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 505 transitions, 9028 flow, removed 6 selfloop flow, removed 27 redundant places. [2024-02-05 10:29:07,208 INFO L231 Difference]: Finished difference. Result has 345 places, 463 transitions, 8265 flow [2024-02-05 10:29:07,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7801, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=227, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8265, PETRI_PLACES=345, PETRI_TRANSITIONS=463} [2024-02-05 10:29:07,209 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 268 predicate places. [2024-02-05 10:29:07,209 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 463 transitions, 8265 flow [2024-02-05 10:29:07,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 32.44444444444444) internal successors, (292), 9 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:07,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:07,209 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] [2024-02-05 10:29:07,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-02-05 10:29:07,210 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:07,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:07,210 INFO L85 PathProgramCache]: Analyzing trace with hash -2086887115, now seen corresponding path program 2 times [2024-02-05 10:29:07,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:07,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016311565] [2024-02-05 10:29:07,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:07,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:07,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:07,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:07,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:07,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016311565] [2024-02-05 10:29:07,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016311565] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:07,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:07,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:29:07,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228130091] [2024-02-05 10:29:07,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:07,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:29:07,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:07,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:29:07,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:29:07,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:29:07,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 463 transitions, 8265 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:07,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:07,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:29:07,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:08,530 INFO L124 PetriNetUnfolderBase]: 2471/4534 cut-off events. [2024-02-05 10:29:08,531 INFO L125 PetriNetUnfolderBase]: For 84386/84558 co-relation queries the response was YES. [2024-02-05 10:29:08,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27329 conditions, 4534 events. 2471/4534 cut-off events. For 84386/84558 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 31334 event pairs, 230 based on Foata normal form. 56/4472 useless extension candidates. Maximal degree in co-relation 27230. Up to 1714 conditions per place. [2024-02-05 10:29:08,572 INFO L140 encePairwiseOnDemand]: 57/73 looper letters, 318 selfloop transitions, 202 changer transitions 0/546 dead transitions. [2024-02-05 10:29:08,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 546 transitions, 9976 flow [2024-02-05 10:29:08,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-05 10:29:08,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-05 10:29:08,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 387 transitions. [2024-02-05 10:29:08,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4417808219178082 [2024-02-05 10:29:08,574 INFO L175 Difference]: Start difference. First operand has 345 places, 463 transitions, 8265 flow. Second operand 12 states and 387 transitions. [2024-02-05 10:29:08,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 546 transitions, 9976 flow [2024-02-05 10:29:08,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 546 transitions, 9454 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-02-05 10:29:08,874 INFO L231 Difference]: Finished difference. Result has 350 places, 479 transitions, 8366 flow [2024-02-05 10:29:08,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7757, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8366, PETRI_PLACES=350, PETRI_TRANSITIONS=479} [2024-02-05 10:29:08,875 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 273 predicate places. [2024-02-05 10:29:08,875 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 479 transitions, 8366 flow [2024-02-05 10:29:08,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:08,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:08,875 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] [2024-02-05 10:29:08,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-02-05 10:29:08,876 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:08,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:08,876 INFO L85 PathProgramCache]: Analyzing trace with hash -2002065793, now seen corresponding path program 3 times [2024-02-05 10:29:08,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:08,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256774689] [2024-02-05 10:29:08,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:08,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:08,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:09,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:09,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:09,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256774689] [2024-02-05 10:29:09,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256774689] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:09,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:09,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:29:09,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850068868] [2024-02-05 10:29:09,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:09,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:29:09,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:09,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:29:09,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:29:09,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:29:09,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 479 transitions, 8366 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:09,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:09,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:29:09,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:10,209 INFO L124 PetriNetUnfolderBase]: 2459/4514 cut-off events. [2024-02-05 10:29:10,209 INFO L125 PetriNetUnfolderBase]: For 85651/85853 co-relation queries the response was YES. [2024-02-05 10:29:10,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28104 conditions, 4514 events. 2459/4514 cut-off events. For 85651/85853 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 31143 event pairs, 230 based on Foata normal form. 62/4464 useless extension candidates. Maximal degree in co-relation 28003. Up to 1710 conditions per place. [2024-02-05 10:29:10,264 INFO L140 encePairwiseOnDemand]: 57/73 looper letters, 326 selfloop transitions, 202 changer transitions 0/554 dead transitions. [2024-02-05 10:29:10,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 554 transitions, 10014 flow [2024-02-05 10:29:10,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-02-05 10:29:10,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-02-05 10:29:10,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 442 transitions. [2024-02-05 10:29:10,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4324853228962818 [2024-02-05 10:29:10,266 INFO L175 Difference]: Start difference. First operand has 350 places, 479 transitions, 8366 flow. Second operand 14 states and 442 transitions. [2024-02-05 10:29:10,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 554 transitions, 10014 flow [2024-02-05 10:29:10,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 554 transitions, 9680 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-02-05 10:29:10,639 INFO L231 Difference]: Finished difference. Result has 355 places, 479 transitions, 8444 flow [2024-02-05 10:29:10,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8032, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=202, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=8444, PETRI_PLACES=355, PETRI_TRANSITIONS=479} [2024-02-05 10:29:10,640 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 278 predicate places. [2024-02-05 10:29:10,640 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 479 transitions, 8444 flow [2024-02-05 10:29:10,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:10,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:10,641 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] [2024-02-05 10:29:10,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-02-05 10:29:10,641 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:10,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:10,641 INFO L85 PathProgramCache]: Analyzing trace with hash 844460735, now seen corresponding path program 4 times [2024-02-05 10:29:10,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:10,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300507839] [2024-02-05 10:29:10,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:10,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:10,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:10,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:10,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:10,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300507839] [2024-02-05 10:29:10,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300507839] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:10,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:10,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:29:10,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912464236] [2024-02-05 10:29:10,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:10,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:29:10,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:10,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:29:10,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:29:11,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:29:11,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 479 transitions, 8444 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:11,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:11,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:29:11,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:12,418 INFO L124 PetriNetUnfolderBase]: 2615/4810 cut-off events. [2024-02-05 10:29:12,418 INFO L125 PetriNetUnfolderBase]: For 91896/92092 co-relation queries the response was YES. [2024-02-05 10:29:12,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29745 conditions, 4810 events. 2615/4810 cut-off events. For 91896/92092 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 33571 event pairs, 210 based on Foata normal form. 56/4748 useless extension candidates. Maximal degree in co-relation 29643. Up to 1766 conditions per place. [2024-02-05 10:29:12,667 INFO L140 encePairwiseOnDemand]: 57/73 looper letters, 294 selfloop transitions, 238 changer transitions 0/558 dead transitions. [2024-02-05 10:29:12,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 558 transitions, 10228 flow [2024-02-05 10:29:12,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-02-05 10:29:12,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-02-05 10:29:12,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 411 transitions. [2024-02-05 10:29:12,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43308746048472074 [2024-02-05 10:29:12,669 INFO L175 Difference]: Start difference. First operand has 355 places, 479 transitions, 8444 flow. Second operand 13 states and 411 transitions. [2024-02-05 10:29:12,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 558 transitions, 10228 flow [2024-02-05 10:29:13,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 558 transitions, 9870 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-02-05 10:29:13,014 INFO L231 Difference]: Finished difference. Result has 358 places, 493 transitions, 8855 flow [2024-02-05 10:29:13,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8104, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=224, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8855, PETRI_PLACES=358, PETRI_TRANSITIONS=493} [2024-02-05 10:29:13,015 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 281 predicate places. [2024-02-05 10:29:13,015 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 493 transitions, 8855 flow [2024-02-05 10:29:13,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:13,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:13,016 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] [2024-02-05 10:29:13,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-02-05 10:29:13,016 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:13,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:13,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1013762529, now seen corresponding path program 5 times [2024-02-05 10:29:13,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:13,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312463663] [2024-02-05 10:29:13,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:13,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:13,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:13,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:13,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:13,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312463663] [2024-02-05 10:29:13,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312463663] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:13,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:13,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:29:13,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587658708] [2024-02-05 10:29:13,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:13,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:29:13,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:13,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:29:13,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:29:13,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:29:13,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 493 transitions, 8855 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:13,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:13,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:29:13,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:14,525 INFO L124 PetriNetUnfolderBase]: 2711/4948 cut-off events. [2024-02-05 10:29:14,525 INFO L125 PetriNetUnfolderBase]: For 99169/99365 co-relation queries the response was YES. [2024-02-05 10:29:14,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31285 conditions, 4948 events. 2711/4948 cut-off events. For 99169/99365 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 34376 event pairs, 222 based on Foata normal form. 56/4886 useless extension candidates. Maximal degree in co-relation 31181. Up to 1798 conditions per place. [2024-02-05 10:29:14,591 INFO L140 encePairwiseOnDemand]: 57/73 looper letters, 288 selfloop transitions, 249 changer transitions 0/563 dead transitions. [2024-02-05 10:29:14,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 563 transitions, 10482 flow [2024-02-05 10:29:14,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-02-05 10:29:14,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-02-05 10:29:14,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 405 transitions. [2024-02-05 10:29:14,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4267650158061117 [2024-02-05 10:29:14,592 INFO L175 Difference]: Start difference. First operand has 358 places, 493 transitions, 8855 flow. Second operand 13 states and 405 transitions. [2024-02-05 10:29:14,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 563 transitions, 10482 flow [2024-02-05 10:29:15,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 563 transitions, 10150 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-02-05 10:29:15,028 INFO L231 Difference]: Finished difference. Result has 364 places, 503 transitions, 9200 flow [2024-02-05 10:29:15,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8529, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=239, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=9200, PETRI_PLACES=364, PETRI_TRANSITIONS=503} [2024-02-05 10:29:15,028 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 287 predicate places. [2024-02-05 10:29:15,029 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 503 transitions, 9200 flow [2024-02-05 10:29:15,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:15,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:15,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:15,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-02-05 10:29:15,030 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:15,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:15,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1057719329, now seen corresponding path program 2 times [2024-02-05 10:29:15,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:15,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913362018] [2024-02-05 10:29:15,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:15,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:15,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:15,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:15,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:15,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913362018] [2024-02-05 10:29:15,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913362018] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:15,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:15,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:29:15,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783900313] [2024-02-05 10:29:15,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:15,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:29:15,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:15,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:29:15,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:29:15,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:29:15,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 503 transitions, 9200 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:15,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:15,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:29:15,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:16,665 INFO L124 PetriNetUnfolderBase]: 2701/4929 cut-off events. [2024-02-05 10:29:16,665 INFO L125 PetriNetUnfolderBase]: For 108522/109121 co-relation queries the response was YES. [2024-02-05 10:29:16,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32545 conditions, 4929 events. 2701/4929 cut-off events. For 108522/109121 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 34168 event pairs, 397 based on Foata normal form. 81/4874 useless extension candidates. Maximal degree in co-relation 32439. Up to 1971 conditions per place. [2024-02-05 10:29:16,709 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 345 selfloop transitions, 189 changer transitions 0/568 dead transitions. [2024-02-05 10:29:16,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 568 transitions, 10710 flow [2024-02-05 10:29:16,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-05 10:29:16,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-05 10:29:16,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 377 transitions. [2024-02-05 10:29:16,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.430365296803653 [2024-02-05 10:29:16,711 INFO L175 Difference]: Start difference. First operand has 364 places, 503 transitions, 9200 flow. Second operand 12 states and 377 transitions. [2024-02-05 10:29:16,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 568 transitions, 10710 flow [2024-02-05 10:29:17,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 568 transitions, 10175 flow, removed 26 selfloop flow, removed 12 redundant places. [2024-02-05 10:29:17,061 INFO L231 Difference]: Finished difference. Result has 364 places, 503 transitions, 9078 flow [2024-02-05 10:29:17,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8685, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=189, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9078, PETRI_PLACES=364, PETRI_TRANSITIONS=503} [2024-02-05 10:29:17,061 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 287 predicate places. [2024-02-05 10:29:17,061 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 503 transitions, 9078 flow [2024-02-05 10:29:17,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:17,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:17,062 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] [2024-02-05 10:29:17,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-02-05 10:29:17,062 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:17,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:17,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1483693307, now seen corresponding path program 6 times [2024-02-05 10:29:17,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:17,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613078497] [2024-02-05 10:29:17,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:17,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:17,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:17,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:17,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:17,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613078497] [2024-02-05 10:29:17,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613078497] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:17,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:17,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:29:17,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435578344] [2024-02-05 10:29:17,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:17,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:29:17,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:17,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:29:17,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:29:17,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:29:17,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 503 transitions, 9078 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:17,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:17,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:29:17,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:18,559 INFO L124 PetriNetUnfolderBase]: 2627/4827 cut-off events. [2024-02-05 10:29:18,560 INFO L125 PetriNetUnfolderBase]: For 100509/100693 co-relation queries the response was YES. [2024-02-05 10:29:18,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31034 conditions, 4827 events. 2627/4827 cut-off events. For 100509/100693 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 33748 event pairs, 406 based on Foata normal form. 68/4789 useless extension candidates. Maximal degree in co-relation 30928. Up to 2428 conditions per place. [2024-02-05 10:29:18,621 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 361 selfloop transitions, 170 changer transitions 0/557 dead transitions. [2024-02-05 10:29:18,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 557 transitions, 10633 flow [2024-02-05 10:29:18,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-05 10:29:18,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-05 10:29:18,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 319 transitions. [2024-02-05 10:29:18,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.436986301369863 [2024-02-05 10:29:18,622 INFO L175 Difference]: Start difference. First operand has 364 places, 503 transitions, 9078 flow. Second operand 10 states and 319 transitions. [2024-02-05 10:29:18,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 557 transitions, 10633 flow [2024-02-05 10:29:19,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 557 transitions, 10255 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-02-05 10:29:19,040 INFO L231 Difference]: Finished difference. Result has 363 places, 503 transitions, 9068 flow [2024-02-05 10:29:19,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8700, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9068, PETRI_PLACES=363, PETRI_TRANSITIONS=503} [2024-02-05 10:29:19,041 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 286 predicate places. [2024-02-05 10:29:19,041 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 503 transitions, 9068 flow [2024-02-05 10:29:19,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:19,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:19,041 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] [2024-02-05 10:29:19,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-02-05 10:29:19,042 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:19,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:19,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1437185319, now seen corresponding path program 7 times [2024-02-05 10:29:19,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:19,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421792615] [2024-02-05 10:29:19,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:19,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:19,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:19,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:19,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:19,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421792615] [2024-02-05 10:29:19,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421792615] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:19,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:19,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:29:19,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398445781] [2024-02-05 10:29:19,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:19,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:29:19,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:19,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:29:19,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:29:19,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:29:19,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 503 transitions, 9068 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:19,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:19,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:29:19,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:20,533 INFO L124 PetriNetUnfolderBase]: 2585/4757 cut-off events. [2024-02-05 10:29:20,534 INFO L125 PetriNetUnfolderBase]: For 100492/100676 co-relation queries the response was YES. [2024-02-05 10:29:20,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30590 conditions, 4757 events. 2585/4757 cut-off events. For 100492/100676 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 33331 event pairs, 384 based on Foata normal form. 64/4715 useless extension candidates. Maximal degree in co-relation 30483. Up to 2414 conditions per place. [2024-02-05 10:29:20,581 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 363 selfloop transitions, 170 changer transitions 0/559 dead transitions. [2024-02-05 10:29:20,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 559 transitions, 10637 flow [2024-02-05 10:29:20,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-05 10:29:20,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-05 10:29:20,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 345 transitions. [2024-02-05 10:29:20,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42963885429638854 [2024-02-05 10:29:20,583 INFO L175 Difference]: Start difference. First operand has 363 places, 503 transitions, 9068 flow. Second operand 11 states and 345 transitions. [2024-02-05 10:29:20,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 559 transitions, 10637 flow [2024-02-05 10:29:20,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 559 transitions, 10306 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-02-05 10:29:20,943 INFO L231 Difference]: Finished difference. Result has 366 places, 503 transitions, 9113 flow [2024-02-05 10:29:20,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8737, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9113, PETRI_PLACES=366, PETRI_TRANSITIONS=503} [2024-02-05 10:29:20,944 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 289 predicate places. [2024-02-05 10:29:20,944 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 503 transitions, 9113 flow [2024-02-05 10:29:20,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:20,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:20,945 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] [2024-02-05 10:29:20,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-02-05 10:29:20,945 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:20,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:20,945 INFO L85 PathProgramCache]: Analyzing trace with hash 232496905, now seen corresponding path program 3 times [2024-02-05 10:29:20,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:20,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80438779] [2024-02-05 10:29:20,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:20,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:20,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:21,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:21,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:21,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80438779] [2024-02-05 10:29:21,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80438779] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:21,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:21,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:29:21,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419151859] [2024-02-05 10:29:21,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:21,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:29:21,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:21,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:29:21,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:29:21,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:29:21,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 503 transitions, 9113 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:21,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:21,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:29:21,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:22,374 INFO L124 PetriNetUnfolderBase]: 2605/4751 cut-off events. [2024-02-05 10:29:22,374 INFO L125 PetriNetUnfolderBase]: For 105083/105676 co-relation queries the response was YES. [2024-02-05 10:29:22,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31067 conditions, 4751 events. 2605/4751 cut-off events. For 105083/105676 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 33018 event pairs, 519 based on Foata normal form. 77/4675 useless extension candidates. Maximal degree in co-relation 30959. Up to 3452 conditions per place. [2024-02-05 10:29:22,437 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 428 selfloop transitions, 110 changer transitions 0/572 dead transitions. [2024-02-05 10:29:22,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 572 transitions, 10709 flow [2024-02-05 10:29:22,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-02-05 10:29:22,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-02-05 10:29:22,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 398 transitions. [2024-02-05 10:29:22,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41938883034773444 [2024-02-05 10:29:22,438 INFO L175 Difference]: Start difference. First operand has 366 places, 503 transitions, 9113 flow. Second operand 13 states and 398 transitions. [2024-02-05 10:29:22,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 572 transitions, 10709 flow [2024-02-05 10:29:22,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 572 transitions, 10382 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-02-05 10:29:22,847 INFO L231 Difference]: Finished difference. Result has 369 places, 503 transitions, 9028 flow [2024-02-05 10:29:22,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8790, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=9028, PETRI_PLACES=369, PETRI_TRANSITIONS=503} [2024-02-05 10:29:22,848 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 292 predicate places. [2024-02-05 10:29:22,848 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 503 transitions, 9028 flow [2024-02-05 10:29:22,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:22,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:22,848 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] [2024-02-05 10:29:22,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-02-05 10:29:22,849 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:22,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:22,849 INFO L85 PathProgramCache]: Analyzing trace with hash -175585699, now seen corresponding path program 8 times [2024-02-05 10:29:22,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:22,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824901802] [2024-02-05 10:29:22,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:22,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:22,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:23,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:23,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:23,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824901802] [2024-02-05 10:29:23,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824901802] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:23,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:23,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:29:23,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398186235] [2024-02-05 10:29:23,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:23,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:29:23,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:23,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:29:23,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:29:23,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:29:23,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 503 transitions, 9028 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:23,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:23,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:29:23,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:24,291 INFO L124 PetriNetUnfolderBase]: 2525/4657 cut-off events. [2024-02-05 10:29:24,291 INFO L125 PetriNetUnfolderBase]: For 97001/97185 co-relation queries the response was YES. [2024-02-05 10:29:24,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29734 conditions, 4657 events. 2525/4657 cut-off events. For 97001/97185 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 32527 event pairs, 380 based on Foata normal form. 68/4619 useless extension candidates. Maximal degree in co-relation 29626. Up to 2394 conditions per place. [2024-02-05 10:29:24,343 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 339 selfloop transitions, 182 changer transitions 0/547 dead transitions. [2024-02-05 10:29:24,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 547 transitions, 10420 flow [2024-02-05 10:29:24,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-05 10:29:24,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-05 10:29:24,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 315 transitions. [2024-02-05 10:29:24,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4315068493150685 [2024-02-05 10:29:24,345 INFO L175 Difference]: Start difference. First operand has 369 places, 503 transitions, 9028 flow. Second operand 10 states and 315 transitions. [2024-02-05 10:29:24,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 547 transitions, 10420 flow [2024-02-05 10:29:24,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 547 transitions, 10107 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-02-05 10:29:24,708 INFO L231 Difference]: Finished difference. Result has 366 places, 503 transitions, 9095 flow [2024-02-05 10:29:24,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8715, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9095, PETRI_PLACES=366, PETRI_TRANSITIONS=503} [2024-02-05 10:29:24,709 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 289 predicate places. [2024-02-05 10:29:24,709 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 503 transitions, 9095 flow [2024-02-05 10:29:24,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:24,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:24,709 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] [2024-02-05 10:29:24,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-02-05 10:29:24,710 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:24,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:24,710 INFO L85 PathProgramCache]: Analyzing trace with hash 233390635, now seen corresponding path program 4 times [2024-02-05 10:29:24,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:24,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50338536] [2024-02-05 10:29:24,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:24,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:24,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:24,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:24,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:24,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50338536] [2024-02-05 10:29:25,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50338536] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:25,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:25,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:29:25,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220028195] [2024-02-05 10:29:25,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:25,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:29:25,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:25,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:29:25,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:29:25,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:29:25,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 503 transitions, 9095 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:25,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:25,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:29:25,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:26,233 INFO L124 PetriNetUnfolderBase]: 2541/4647 cut-off events. [2024-02-05 10:29:26,234 INFO L125 PetriNetUnfolderBase]: For 100069/100656 co-relation queries the response was YES. [2024-02-05 10:29:26,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30232 conditions, 4647 events. 2541/4647 cut-off events. For 100069/100656 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 32287 event pairs, 505 based on Foata normal form. 81/4574 useless extension candidates. Maximal degree in co-relation 30123. Up to 3398 conditions per place. [2024-02-05 10:29:26,291 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 414 selfloop transitions, 116 changer transitions 0/564 dead transitions. [2024-02-05 10:29:26,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 564 transitions, 10519 flow [2024-02-05 10:29:26,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-02-05 10:29:26,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-02-05 10:29:26,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 417 transitions. [2024-02-05 10:29:26,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4080234833659491 [2024-02-05 10:29:26,292 INFO L175 Difference]: Start difference. First operand has 366 places, 503 transitions, 9095 flow. Second operand 14 states and 417 transitions. [2024-02-05 10:29:26,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 564 transitions, 10519 flow [2024-02-05 10:29:26,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 564 transitions, 10118 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-02-05 10:29:26,675 INFO L231 Difference]: Finished difference. Result has 370 places, 503 transitions, 8938 flow [2024-02-05 10:29:26,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8694, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=8938, PETRI_PLACES=370, PETRI_TRANSITIONS=503} [2024-02-05 10:29:26,675 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 293 predicate places. [2024-02-05 10:29:26,675 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 503 transitions, 8938 flow [2024-02-05 10:29:26,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:26,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:26,696 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] [2024-02-05 10:29:26,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-02-05 10:29:26,696 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:26,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:26,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1872227441, now seen corresponding path program 5 times [2024-02-05 10:29:26,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:26,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009509590] [2024-02-05 10:29:26,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:26,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:26,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:26,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:26,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:26,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009509590] [2024-02-05 10:29:26,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009509590] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:26,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:26,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:29:26,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638088984] [2024-02-05 10:29:26,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:26,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:29:26,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:26,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:29:26,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:29:27,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:29:27,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 503 transitions, 8938 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:27,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:27,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:29:27,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:28,286 INFO L124 PetriNetUnfolderBase]: 2857/5189 cut-off events. [2024-02-05 10:29:28,286 INFO L125 PetriNetUnfolderBase]: For 106797/107403 co-relation queries the response was YES. [2024-02-05 10:29:28,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32889 conditions, 5189 events. 2857/5189 cut-off events. For 106797/107403 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 36477 event pairs, 567 based on Foata normal form. 97/5117 useless extension candidates. Maximal degree in co-relation 32779. Up to 3912 conditions per place. [2024-02-05 10:29:28,339 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 469 selfloop transitions, 100 changer transitions 0/603 dead transitions. [2024-02-05 10:29:28,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 603 transitions, 11115 flow [2024-02-05 10:29:28,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-05 10:29:28,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-05 10:29:28,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 373 transitions. [2024-02-05 10:29:28,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4257990867579909 [2024-02-05 10:29:28,340 INFO L175 Difference]: Start difference. First operand has 370 places, 503 transitions, 8938 flow. Second operand 12 states and 373 transitions. [2024-02-05 10:29:28,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 603 transitions, 11115 flow [2024-02-05 10:29:28,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 603 transitions, 10959 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-02-05 10:29:28,717 INFO L231 Difference]: Finished difference. Result has 377 places, 533 transitions, 9591 flow [2024-02-05 10:29:28,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8782, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9591, PETRI_PLACES=377, PETRI_TRANSITIONS=533} [2024-02-05 10:29:28,717 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 300 predicate places. [2024-02-05 10:29:28,717 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 533 transitions, 9591 flow [2024-02-05 10:29:28,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:28,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:28,718 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] [2024-02-05 10:29:28,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-02-05 10:29:28,718 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:28,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:28,718 INFO L85 PathProgramCache]: Analyzing trace with hash 351515479, now seen corresponding path program 9 times [2024-02-05 10:29:28,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:28,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646754354] [2024-02-05 10:29:28,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:28,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:28,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:28,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:28,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:28,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646754354] [2024-02-05 10:29:28,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646754354] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:28,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:28,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:29:28,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906383109] [2024-02-05 10:29:28,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:28,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:29:28,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:28,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:29:28,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:29:29,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:29:29,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 533 transitions, 9591 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:29,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:29,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:29:29,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:30,179 INFO L124 PetriNetUnfolderBase]: 2793/5139 cut-off events. [2024-02-05 10:29:30,179 INFO L125 PetriNetUnfolderBase]: For 105115/105302 co-relation queries the response was YES. [2024-02-05 10:29:30,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32509 conditions, 5139 events. 2793/5139 cut-off events. For 105115/105302 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 36390 event pairs, 398 based on Foata normal form. 44/5077 useless extension candidates. Maximal degree in co-relation 32395. Up to 1766 conditions per place. [2024-02-05 10:29:30,236 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 339 selfloop transitions, 231 changer transitions 0/596 dead transitions. [2024-02-05 10:29:30,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 596 transitions, 11279 flow [2024-02-05 10:29:30,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-05 10:29:30,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-05 10:29:30,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 375 transitions. [2024-02-05 10:29:30,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4280821917808219 [2024-02-05 10:29:30,238 INFO L175 Difference]: Start difference. First operand has 377 places, 533 transitions, 9591 flow. Second operand 12 states and 375 transitions. [2024-02-05 10:29:30,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 596 transitions, 11279 flow [2024-02-05 10:29:30,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 596 transitions, 11158 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-02-05 10:29:30,652 INFO L231 Difference]: Finished difference. Result has 383 places, 533 transitions, 9948 flow [2024-02-05 10:29:30,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9470, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=231, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9948, PETRI_PLACES=383, PETRI_TRANSITIONS=533} [2024-02-05 10:29:30,653 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 306 predicate places. [2024-02-05 10:29:30,653 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 533 transitions, 9948 flow [2024-02-05 10:29:30,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:30,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:30,653 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] [2024-02-05 10:29:30,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-02-05 10:29:30,653 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:30,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:30,654 INFO L85 PathProgramCache]: Analyzing trace with hash 825060203, now seen corresponding path program 6 times [2024-02-05 10:29:30,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:30,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181531318] [2024-02-05 10:29:30,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:30,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:30,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:30,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:30,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:30,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181531318] [2024-02-05 10:29:30,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181531318] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:30,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:30,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:29:30,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197454557] [2024-02-05 10:29:30,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:30,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:29:30,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:30,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:29:30,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:29:31,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:29:31,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 533 transitions, 9948 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:31,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:31,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:29:31,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:32,290 INFO L124 PetriNetUnfolderBase]: 2829/5135 cut-off events. [2024-02-05 10:29:32,291 INFO L125 PetriNetUnfolderBase]: For 120930/121538 co-relation queries the response was YES. [2024-02-05 10:29:32,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33932 conditions, 5135 events. 2829/5135 cut-off events. For 120930/121538 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 36060 event pairs, 563 based on Foata normal form. 101/5067 useless extension candidates. Maximal degree in co-relation 33817. Up to 3886 conditions per place. [2024-02-05 10:29:32,341 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 458 selfloop transitions, 104 changer transitions 0/596 dead transitions. [2024-02-05 10:29:32,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 596 transitions, 11522 flow [2024-02-05 10:29:32,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-05 10:29:32,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-05 10:29:32,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 371 transitions. [2024-02-05 10:29:32,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4235159817351598 [2024-02-05 10:29:32,343 INFO L175 Difference]: Start difference. First operand has 383 places, 533 transitions, 9948 flow. Second operand 12 states and 371 transitions. [2024-02-05 10:29:32,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 596 transitions, 11522 flow [2024-02-05 10:29:32,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 596 transitions, 11063 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-02-05 10:29:32,777 INFO L231 Difference]: Finished difference. Result has 386 places, 535 transitions, 9776 flow [2024-02-05 10:29:32,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9489, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9776, PETRI_PLACES=386, PETRI_TRANSITIONS=535} [2024-02-05 10:29:32,778 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 309 predicate places. [2024-02-05 10:29:32,778 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 535 transitions, 9776 flow [2024-02-05 10:29:32,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:32,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:32,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:32,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-02-05 10:29:32,779 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:32,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:32,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1811906311, now seen corresponding path program 7 times [2024-02-05 10:29:32,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:32,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022053624] [2024-02-05 10:29:32,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:32,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:32,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:33,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:33,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:33,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022053624] [2024-02-05 10:29:33,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022053624] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:33,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:33,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:29:33,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767427359] [2024-02-05 10:29:33,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:33,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:29:33,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:33,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:29:33,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:29:33,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:29:33,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 535 transitions, 9776 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:33,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:33,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:29:33,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:34,293 INFO L124 PetriNetUnfolderBase]: 2899/5301 cut-off events. [2024-02-05 10:29:34,294 INFO L125 PetriNetUnfolderBase]: For 116010/116618 co-relation queries the response was YES. [2024-02-05 10:29:34,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33856 conditions, 5301 events. 2899/5301 cut-off events. For 116010/116618 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 37657 event pairs, 452 based on Foata normal form. 97/5250 useless extension candidates. Maximal degree in co-relation 33738. Up to 2650 conditions per place. [2024-02-05 10:29:34,357 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 394 selfloop transitions, 188 changer transitions 0/616 dead transitions. [2024-02-05 10:29:34,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 616 transitions, 11603 flow [2024-02-05 10:29:34,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-05 10:29:34,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-05 10:29:34,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 377 transitions. [2024-02-05 10:29:34,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.430365296803653 [2024-02-05 10:29:34,359 INFO L175 Difference]: Start difference. First operand has 386 places, 535 transitions, 9776 flow. Second operand 12 states and 377 transitions. [2024-02-05 10:29:34,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 616 transitions, 11603 flow [2024-02-05 10:29:34,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 616 transitions, 11452 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-02-05 10:29:34,834 INFO L231 Difference]: Finished difference. Result has 391 places, 544 transitions, 10131 flow [2024-02-05 10:29:34,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9625, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=535, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10131, PETRI_PLACES=391, PETRI_TRANSITIONS=544} [2024-02-05 10:29:34,834 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 314 predicate places. [2024-02-05 10:29:34,835 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 544 transitions, 10131 flow [2024-02-05 10:29:34,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:34,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:34,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:29:34,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-02-05 10:29:34,835 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:34,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:34,836 INFO L85 PathProgramCache]: Analyzing trace with hash -277517199, now seen corresponding path program 8 times [2024-02-05 10:29:34,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:34,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384632265] [2024-02-05 10:29:34,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:34,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:34,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:35,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:35,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:35,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384632265] [2024-02-05 10:29:35,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384632265] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:35,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:35,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:29:35,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536835832] [2024-02-05 10:29:35,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:35,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:29:35,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:35,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:29:35,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:29:35,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:29:35,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 544 transitions, 10131 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:35,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:35,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:29:35,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:36,438 INFO L124 PetriNetUnfolderBase]: 2949/5348 cut-off events. [2024-02-05 10:29:36,438 INFO L125 PetriNetUnfolderBase]: For 125473/126102 co-relation queries the response was YES. [2024-02-05 10:29:36,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35101 conditions, 5348 events. 2949/5348 cut-off events. For 125473/126102 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 37738 event pairs, 618 based on Foata normal form. 97/5277 useless extension candidates. Maximal degree in co-relation 34981. Up to 4110 conditions per place. [2024-02-05 10:29:36,501 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 477 selfloop transitions, 100 changer transitions 0/611 dead transitions. [2024-02-05 10:29:36,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 611 transitions, 11726 flow [2024-02-05 10:29:36,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-02-05 10:29:36,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-02-05 10:29:36,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 395 transitions. [2024-02-05 10:29:36,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41622760800842995 [2024-02-05 10:29:36,502 INFO L175 Difference]: Start difference. First operand has 391 places, 544 transitions, 10131 flow. Second operand 13 states and 395 transitions. [2024-02-05 10:29:36,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 611 transitions, 11726 flow [2024-02-05 10:29:37,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 611 transitions, 11478 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-02-05 10:29:37,039 INFO L231 Difference]: Finished difference. Result has 397 places, 544 transitions, 10097 flow [2024-02-05 10:29:37,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9883, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=10097, PETRI_PLACES=397, PETRI_TRANSITIONS=544} [2024-02-05 10:29:37,040 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 320 predicate places. [2024-02-05 10:29:37,040 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 544 transitions, 10097 flow [2024-02-05 10:29:37,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:37,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:37,041 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] [2024-02-05 10:29:37,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-02-05 10:29:37,041 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:37,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:37,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1645969073, now seen corresponding path program 9 times [2024-02-05 10:29:37,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:37,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678958666] [2024-02-05 10:29:37,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:37,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:37,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:37,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:37,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:37,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678958666] [2024-02-05 10:29:37,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678958666] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:37,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:37,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:29:37,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829276750] [2024-02-05 10:29:37,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:37,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:29:37,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:37,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:29:37,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:29:37,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:29:37,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 544 transitions, 10097 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:37,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:37,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:29:37,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:38,644 INFO L124 PetriNetUnfolderBase]: 2875/5264 cut-off events. [2024-02-05 10:29:38,644 INFO L125 PetriNetUnfolderBase]: For 123610/124218 co-relation queries the response was YES. [2024-02-05 10:29:38,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34119 conditions, 5264 events. 2875/5264 cut-off events. For 123610/124218 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 37451 event pairs, 448 based on Foata normal form. 97/5213 useless extension candidates. Maximal degree in co-relation 33998. Up to 2642 conditions per place. [2024-02-05 10:29:38,708 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 400 selfloop transitions, 188 changer transitions 0/622 dead transitions. [2024-02-05 10:29:38,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 622 transitions, 11829 flow [2024-02-05 10:29:38,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-02-05 10:29:38,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-02-05 10:29:38,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 430 transitions. [2024-02-05 10:29:38,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4207436399217221 [2024-02-05 10:29:38,710 INFO L175 Difference]: Start difference. First operand has 397 places, 544 transitions, 10097 flow. Second operand 14 states and 430 transitions. [2024-02-05 10:29:38,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 622 transitions, 11829 flow [2024-02-05 10:29:39,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 622 transitions, 11556 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-02-05 10:29:39,225 INFO L231 Difference]: Finished difference. Result has 399 places, 544 transitions, 10208 flow [2024-02-05 10:29:39,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9824, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=10208, PETRI_PLACES=399, PETRI_TRANSITIONS=544} [2024-02-05 10:29:39,225 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 322 predicate places. [2024-02-05 10:29:39,226 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 544 transitions, 10208 flow [2024-02-05 10:29:39,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:39,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:39,226 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] [2024-02-05 10:29:39,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-02-05 10:29:39,226 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:39,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:39,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1621208723, now seen corresponding path program 10 times [2024-02-05 10:29:39,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:39,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884824343] [2024-02-05 10:29:39,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:39,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:39,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:39,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:39,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:39,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884824343] [2024-02-05 10:29:39,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884824343] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:39,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:39,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:29:39,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821916395] [2024-02-05 10:29:39,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:39,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:29:39,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:39,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:29:39,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:29:39,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:29:39,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 544 transitions, 10208 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:39,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:39,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:29:39,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:40,774 INFO L124 PetriNetUnfolderBase]: 2863/5244 cut-off events. [2024-02-05 10:29:40,774 INFO L125 PetriNetUnfolderBase]: For 124136/124745 co-relation queries the response was YES. [2024-02-05 10:29:40,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34286 conditions, 5244 events. 2863/5244 cut-off events. For 124136/124745 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 37270 event pairs, 427 based on Foata normal form. 87/5183 useless extension candidates. Maximal degree in co-relation 34164. Up to 2638 conditions per place. [2024-02-05 10:29:40,838 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 365 selfloop transitions, 211 changer transitions 0/610 dead transitions. [2024-02-05 10:29:40,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 610 transitions, 11774 flow [2024-02-05 10:29:40,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-02-05 10:29:40,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-02-05 10:29:40,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 395 transitions. [2024-02-05 10:29:40,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41622760800842995 [2024-02-05 10:29:40,840 INFO L175 Difference]: Start difference. First operand has 399 places, 544 transitions, 10208 flow. Second operand 13 states and 395 transitions. [2024-02-05 10:29:40,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 610 transitions, 11774 flow [2024-02-05 10:29:41,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 610 transitions, 11467 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-02-05 10:29:41,345 INFO L231 Difference]: Finished difference. Result has 404 places, 544 transitions, 10330 flow [2024-02-05 10:29:41,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9901, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=211, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=10330, PETRI_PLACES=404, PETRI_TRANSITIONS=544} [2024-02-05 10:29:41,346 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 327 predicate places. [2024-02-05 10:29:41,346 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 544 transitions, 10330 flow [2024-02-05 10:29:41,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:41,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:41,346 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] [2024-02-05 10:29:41,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-02-05 10:29:41,347 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:41,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:41,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1551286201, now seen corresponding path program 5 times [2024-02-05 10:29:41,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:41,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631258922] [2024-02-05 10:29:41,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:41,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:41,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:41,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:41,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:41,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631258922] [2024-02-05 10:29:41,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631258922] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:41,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:41,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:29:41,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125437415] [2024-02-05 10:29:41,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:41,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:29:41,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:41,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:29:41,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:29:41,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:29:41,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 544 transitions, 10330 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:41,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:41,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:29:41,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:42,752 INFO L124 PetriNetUnfolderBase]: 2873/5281 cut-off events. [2024-02-05 10:29:42,752 INFO L125 PetriNetUnfolderBase]: For 125932/126551 co-relation queries the response was YES. [2024-02-05 10:29:42,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34753 conditions, 5281 events. 2873/5281 cut-off events. For 125932/126551 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 37756 event pairs, 546 based on Foata normal form. 75/5181 useless extension candidates. Maximal degree in co-relation 34630. Up to 4014 conditions per place. [2024-02-05 10:29:42,926 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 449 selfloop transitions, 87 changer transitions 0/570 dead transitions. [2024-02-05 10:29:42,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 570 transitions, 11591 flow [2024-02-05 10:29:42,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:29:42,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:29:42,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 221 transitions. [2024-02-05 10:29:42,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4324853228962818 [2024-02-05 10:29:42,927 INFO L175 Difference]: Start difference. First operand has 404 places, 544 transitions, 10330 flow. Second operand 7 states and 221 transitions. [2024-02-05 10:29:42,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 570 transitions, 11591 flow [2024-02-05 10:29:43,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 570 transitions, 11303 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-02-05 10:29:43,382 INFO L231 Difference]: Finished difference. Result has 404 places, 546 transitions, 10260 flow [2024-02-05 10:29:43,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10046, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10260, PETRI_PLACES=404, PETRI_TRANSITIONS=546} [2024-02-05 10:29:43,383 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 327 predicate places. [2024-02-05 10:29:43,383 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 546 transitions, 10260 flow [2024-02-05 10:29:43,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:43,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:43,383 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] [2024-02-05 10:29:43,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-02-05 10:29:43,384 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:43,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:43,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1072186541, now seen corresponding path program 6 times [2024-02-05 10:29:43,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:43,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901445117] [2024-02-05 10:29:43,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:43,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:43,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:43,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:43,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:43,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901445117] [2024-02-05 10:29:43,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901445117] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:43,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:43,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:29:43,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740044990] [2024-02-05 10:29:43,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:43,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:29:43,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:43,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:29:43,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:29:43,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:29:43,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 546 transitions, 10260 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:43,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:43,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:29:43,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:44,882 INFO L124 PetriNetUnfolderBase]: 2887/5295 cut-off events. [2024-02-05 10:29:44,882 INFO L125 PetriNetUnfolderBase]: For 125992/126609 co-relation queries the response was YES. [2024-02-05 10:29:44,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34541 conditions, 5295 events. 2887/5295 cut-off events. For 125992/126609 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 37828 event pairs, 675 based on Foata normal form. 53/5165 useless extension candidates. Maximal degree in co-relation 34417. Up to 4492 conditions per place. [2024-02-05 10:29:44,947 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 453 selfloop transitions, 75 changer transitions 0/562 dead transitions. [2024-02-05 10:29:44,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 562 transitions, 11377 flow [2024-02-05 10:29:44,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:29:44,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:29:44,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 215 transitions. [2024-02-05 10:29:44,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4207436399217221 [2024-02-05 10:29:44,948 INFO L175 Difference]: Start difference. First operand has 404 places, 546 transitions, 10260 flow. Second operand 7 states and 215 transitions. [2024-02-05 10:29:44,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 562 transitions, 11377 flow [2024-02-05 10:29:45,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 562 transitions, 11248 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-02-05 10:29:45,489 INFO L231 Difference]: Finished difference. Result has 407 places, 546 transitions, 10307 flow [2024-02-05 10:29:45,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10131, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10307, PETRI_PLACES=407, PETRI_TRANSITIONS=546} [2024-02-05 10:29:45,489 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 330 predicate places. [2024-02-05 10:29:45,489 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 546 transitions, 10307 flow [2024-02-05 10:29:45,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:45,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:45,490 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] [2024-02-05 10:29:45,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-02-05 10:29:45,490 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:45,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:45,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1524415789, now seen corresponding path program 7 times [2024-02-05 10:29:45,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:45,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145407497] [2024-02-05 10:29:45,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:45,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:45,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:45,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:45,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:45,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145407497] [2024-02-05 10:29:45,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145407497] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:45,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:45,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:29:45,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709497211] [2024-02-05 10:29:45,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:45,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:29:45,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:45,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:29:45,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:29:45,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:29:45,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 546 transitions, 10307 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:45,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:45,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:29:45,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:46,903 INFO L124 PetriNetUnfolderBase]: 2869/5269 cut-off events. [2024-02-05 10:29:46,903 INFO L125 PetriNetUnfolderBase]: For 125682/126299 co-relation queries the response was YES. [2024-02-05 10:29:46,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34306 conditions, 5269 events. 2869/5269 cut-off events. For 125682/126299 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 37624 event pairs, 556 based on Foata normal form. 55/5149 useless extension candidates. Maximal degree in co-relation 34182. Up to 4014 conditions per place. [2024-02-05 10:29:46,955 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 433 selfloop transitions, 99 changer transitions 0/566 dead transitions. [2024-02-05 10:29:46,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 566 transitions, 11470 flow [2024-02-05 10:29:46,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:29:46,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:29:46,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 217 transitions. [2024-02-05 10:29:46,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4246575342465753 [2024-02-05 10:29:46,957 INFO L175 Difference]: Start difference. First operand has 407 places, 546 transitions, 10307 flow. Second operand 7 states and 217 transitions. [2024-02-05 10:29:46,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 566 transitions, 11470 flow [2024-02-05 10:29:47,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 566 transitions, 11304 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-02-05 10:29:47,421 INFO L231 Difference]: Finished difference. Result has 407 places, 546 transitions, 10349 flow [2024-02-05 10:29:47,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10141, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=447, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10349, PETRI_PLACES=407, PETRI_TRANSITIONS=546} [2024-02-05 10:29:47,421 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 330 predicate places. [2024-02-05 10:29:47,421 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 546 transitions, 10349 flow [2024-02-05 10:29:47,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:47,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:47,422 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] [2024-02-05 10:29:47,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-02-05 10:29:47,422 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:47,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:47,422 INFO L85 PathProgramCache]: Analyzing trace with hash -354529603, now seen corresponding path program 8 times [2024-02-05 10:29:47,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:47,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108049921] [2024-02-05 10:29:47,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:47,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:47,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:47,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:47,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:47,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108049921] [2024-02-05 10:29:47,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108049921] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:47,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:47,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:29:47,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445404409] [2024-02-05 10:29:47,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:47,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:29:47,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:47,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:29:47,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:29:47,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:29:47,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 546 transitions, 10349 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:47,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:47,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:29:47,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:48,873 INFO L124 PetriNetUnfolderBase]: 2945/5368 cut-off events. [2024-02-05 10:29:48,873 INFO L125 PetriNetUnfolderBase]: For 131299/131875 co-relation queries the response was YES. [2024-02-05 10:29:48,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35309 conditions, 5368 events. 2945/5368 cut-off events. For 131299/131875 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 38188 event pairs, 523 based on Foata normal form. 92/5267 useless extension candidates. Maximal degree in co-relation 35186. Up to 4096 conditions per place. [2024-02-05 10:29:48,940 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 430 selfloop transitions, 104 changer transitions 0/568 dead transitions. [2024-02-05 10:29:48,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 568 transitions, 11559 flow [2024-02-05 10:29:48,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:29:48,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:29:48,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 216 transitions. [2024-02-05 10:29:48,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4227005870841487 [2024-02-05 10:29:48,942 INFO L175 Difference]: Start difference. First operand has 407 places, 546 transitions, 10349 flow. Second operand 7 states and 216 transitions. [2024-02-05 10:29:48,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 568 transitions, 11559 flow [2024-02-05 10:29:49,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 568 transitions, 11320 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-02-05 10:29:49,452 INFO L231 Difference]: Finished difference. Result has 407 places, 551 transitions, 10439 flow [2024-02-05 10:29:49,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10121, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10439, PETRI_PLACES=407, PETRI_TRANSITIONS=551} [2024-02-05 10:29:49,453 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 330 predicate places. [2024-02-05 10:29:49,453 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 551 transitions, 10439 flow [2024-02-05 10:29:49,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:49,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:49,454 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] [2024-02-05 10:29:49,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-02-05 10:29:49,454 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:49,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:49,454 INFO L85 PathProgramCache]: Analyzing trace with hash 375794639, now seen corresponding path program 9 times [2024-02-05 10:29:49,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:49,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169989069] [2024-02-05 10:29:49,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:49,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:49,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:49,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:49,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:49,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169989069] [2024-02-05 10:29:49,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169989069] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:49,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:49,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:29:49,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853854486] [2024-02-05 10:29:49,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:49,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:29:49,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:49,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:29:49,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:29:49,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:29:49,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 551 transitions, 10439 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:49,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:49,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:29:49,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:50,916 INFO L124 PetriNetUnfolderBase]: 2955/5398 cut-off events. [2024-02-05 10:29:50,917 INFO L125 PetriNetUnfolderBase]: For 131134/131714 co-relation queries the response was YES. [2024-02-05 10:29:50,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35704 conditions, 5398 events. 2955/5398 cut-off events. For 131134/131714 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 38611 event pairs, 525 based on Foata normal form. 92/5297 useless extension candidates. Maximal degree in co-relation 35581. Up to 4112 conditions per place. [2024-02-05 10:29:50,988 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 427 selfloop transitions, 111 changer transitions 0/572 dead transitions. [2024-02-05 10:29:50,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 572 transitions, 11650 flow [2024-02-05 10:29:50,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:29:50,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:29:50,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 216 transitions. [2024-02-05 10:29:50,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4227005870841487 [2024-02-05 10:29:50,989 INFO L175 Difference]: Start difference. First operand has 407 places, 551 transitions, 10439 flow. Second operand 7 states and 216 transitions. [2024-02-05 10:29:50,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 572 transitions, 11650 flow [2024-02-05 10:29:51,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 572 transitions, 11457 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-02-05 10:29:51,518 INFO L231 Difference]: Finished difference. Result has 409 places, 555 transitions, 10530 flow [2024-02-05 10:29:51,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10265, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10530, PETRI_PLACES=409, PETRI_TRANSITIONS=555} [2024-02-05 10:29:51,518 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 332 predicate places. [2024-02-05 10:29:51,518 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 555 transitions, 10530 flow [2024-02-05 10:29:51,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:51,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:51,519 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] [2024-02-05 10:29:51,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-02-05 10:29:51,519 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:51,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:51,519 INFO L85 PathProgramCache]: Analyzing trace with hash 410650109, now seen corresponding path program 10 times [2024-02-05 10:29:51,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:51,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690079854] [2024-02-05 10:29:51,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:51,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:51,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:51,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:51,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:51,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690079854] [2024-02-05 10:29:51,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690079854] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:51,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:51,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:29:51,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356094902] [2024-02-05 10:29:51,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:51,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:29:51,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:51,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:29:51,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:29:51,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:29:51,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 555 transitions, 10530 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:51,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:51,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:29:51,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:52,986 INFO L124 PetriNetUnfolderBase]: 2959/5410 cut-off events. [2024-02-05 10:29:52,987 INFO L125 PetriNetUnfolderBase]: For 133061/133637 co-relation queries the response was YES. [2024-02-05 10:29:53,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35516 conditions, 5410 events. 2959/5410 cut-off events. For 133061/133637 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 38683 event pairs, 546 based on Foata normal form. 66/5283 useless extension candidates. Maximal degree in co-relation 35395. Up to 4124 conditions per place. [2024-02-05 10:29:53,056 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 416 selfloop transitions, 123 changer transitions 0/573 dead transitions. [2024-02-05 10:29:53,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 573 transitions, 11690 flow [2024-02-05 10:29:53,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-05 10:29:53,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-05 10:29:53,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 213 transitions. [2024-02-05 10:29:53,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41682974559686886 [2024-02-05 10:29:53,057 INFO L175 Difference]: Start difference. First operand has 409 places, 555 transitions, 10530 flow. Second operand 7 states and 213 transitions. [2024-02-05 10:29:53,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 573 transitions, 11690 flow [2024-02-05 10:29:53,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 573 transitions, 11407 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-02-05 10:29:53,599 INFO L231 Difference]: Finished difference. Result has 404 places, 558 transitions, 10575 flow [2024-02-05 10:29:53,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10235, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=554, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10575, PETRI_PLACES=404, PETRI_TRANSITIONS=558} [2024-02-05 10:29:53,600 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 327 predicate places. [2024-02-05 10:29:53,600 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 558 transitions, 10575 flow [2024-02-05 10:29:53,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:53,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:53,600 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] [2024-02-05 10:29:53,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-02-05 10:29:53,600 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:53,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:53,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1135065599, now seen corresponding path program 11 times [2024-02-05 10:29:53,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:53,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837042011] [2024-02-05 10:29:53,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:53,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:53,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:53,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:53,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:53,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837042011] [2024-02-05 10:29:53,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837042011] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:53,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:53,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:29:53,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588823347] [2024-02-05 10:29:53,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:53,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:29:53,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:53,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:29:53,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:29:53,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:29:53,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 558 transitions, 10575 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:53,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:53,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:29:53,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:55,113 INFO L124 PetriNetUnfolderBase]: 2899/5357 cut-off events. [2024-02-05 10:29:55,114 INFO L125 PetriNetUnfolderBase]: For 131212/131827 co-relation queries the response was YES. [2024-02-05 10:29:55,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34691 conditions, 5357 events. 2899/5357 cut-off events. For 131212/131827 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 38551 event pairs, 451 based on Foata normal form. 81/5290 useless extension candidates. Maximal degree in co-relation 34577. Up to 2778 conditions per place. [2024-02-05 10:29:55,175 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 381 selfloop transitions, 197 changer transitions 0/612 dead transitions. [2024-02-05 10:29:55,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 612 transitions, 12179 flow [2024-02-05 10:29:55,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-05 10:29:55,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-05 10:29:55,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 318 transitions. [2024-02-05 10:29:55,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43561643835616437 [2024-02-05 10:29:55,177 INFO L175 Difference]: Start difference. First operand has 404 places, 558 transitions, 10575 flow. Second operand 10 states and 318 transitions. [2024-02-05 10:29:55,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 612 transitions, 12179 flow [2024-02-05 10:29:55,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 612 transitions, 11943 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-02-05 10:29:55,674 INFO L231 Difference]: Finished difference. Result has 409 places, 558 transitions, 10783 flow [2024-02-05 10:29:55,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10343, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=197, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10783, PETRI_PLACES=409, PETRI_TRANSITIONS=558} [2024-02-05 10:29:55,675 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 332 predicate places. [2024-02-05 10:29:55,675 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 558 transitions, 10783 flow [2024-02-05 10:29:55,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:55,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:55,676 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] [2024-02-05 10:29:55,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-02-05 10:29:55,676 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:55,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:55,676 INFO L85 PathProgramCache]: Analyzing trace with hash 773793389, now seen corresponding path program 12 times [2024-02-05 10:29:55,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:55,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365346890] [2024-02-05 10:29:55,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:55,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:55,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:55,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:55,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:55,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365346890] [2024-02-05 10:29:55,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365346890] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:55,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:55,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:29:55,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429693276] [2024-02-05 10:29:55,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:55,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:29:55,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:55,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:29:55,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:29:55,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:29:55,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 558 transitions, 10783 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:55,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:55,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:29:55,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:57,225 INFO L124 PetriNetUnfolderBase]: 2887/5338 cut-off events. [2024-02-05 10:29:57,226 INFO L125 PetriNetUnfolderBase]: For 137307/137923 co-relation queries the response was YES. [2024-02-05 10:29:57,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35060 conditions, 5338 events. 2887/5338 cut-off events. For 137307/137923 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 38321 event pairs, 484 based on Foata normal form. 81/5270 useless extension candidates. Maximal degree in co-relation 34946. Up to 2774 conditions per place. [2024-02-05 10:29:57,389 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 382 selfloop transitions, 197 changer transitions 0/613 dead transitions. [2024-02-05 10:29:57,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 613 transitions, 12331 flow [2024-02-05 10:29:57,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-05 10:29:57,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-05 10:29:57,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 342 transitions. [2024-02-05 10:29:57,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4259028642590286 [2024-02-05 10:29:57,391 INFO L175 Difference]: Start difference. First operand has 409 places, 558 transitions, 10783 flow. Second operand 11 states and 342 transitions. [2024-02-05 10:29:57,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 613 transitions, 12331 flow [2024-02-05 10:29:57,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 613 transitions, 11901 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-02-05 10:29:57,850 INFO L231 Difference]: Finished difference. Result has 410 places, 558 transitions, 10793 flow [2024-02-05 10:29:57,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10365, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=197, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10793, PETRI_PLACES=410, PETRI_TRANSITIONS=558} [2024-02-05 10:29:57,850 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 333 predicate places. [2024-02-05 10:29:57,850 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 558 transitions, 10793 flow [2024-02-05 10:29:57,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:57,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:57,851 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] [2024-02-05 10:29:57,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-02-05 10:29:57,851 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:57,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:57,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1135986299, now seen corresponding path program 13 times [2024-02-05 10:29:57,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:57,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022214174] [2024-02-05 10:29:57,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:57,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:57,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:29:58,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:29:58,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:29:58,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022214174] [2024-02-05 10:29:58,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022214174] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:29:58,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:29:58,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:29:58,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343613873] [2024-02-05 10:29:58,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:29:58,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:29:58,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:29:58,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:29:58,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:29:58,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:29:58,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 558 transitions, 10793 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:58,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:29:58,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:29:58,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:29:59,387 INFO L124 PetriNetUnfolderBase]: 2871/5306 cut-off events. [2024-02-05 10:29:59,387 INFO L125 PetriNetUnfolderBase]: For 136233/136855 co-relation queries the response was YES. [2024-02-05 10:29:59,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34686 conditions, 5306 events. 2871/5306 cut-off events. For 136233/136855 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 38125 event pairs, 446 based on Foata normal form. 85/5243 useless extension candidates. Maximal degree in co-relation 34572. Up to 2768 conditions per place. [2024-02-05 10:29:59,445 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 360 selfloop transitions, 209 changer transitions 0/603 dead transitions. [2024-02-05 10:29:59,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 603 transitions, 12165 flow [2024-02-05 10:29:59,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-05 10:29:59,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-05 10:29:59,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 314 transitions. [2024-02-05 10:29:59,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4301369863013699 [2024-02-05 10:29:59,447 INFO L175 Difference]: Start difference. First operand has 410 places, 558 transitions, 10793 flow. Second operand 10 states and 314 transitions. [2024-02-05 10:29:59,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 603 transitions, 12165 flow [2024-02-05 10:29:59,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 603 transitions, 11739 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-02-05 10:29:59,935 INFO L231 Difference]: Finished difference. Result has 408 places, 558 transitions, 10813 flow [2024-02-05 10:29:59,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10367, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10813, PETRI_PLACES=408, PETRI_TRANSITIONS=558} [2024-02-05 10:29:59,936 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 331 predicate places. [2024-02-05 10:29:59,936 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 558 transitions, 10813 flow [2024-02-05 10:29:59,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:29:59,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:29:59,936 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] [2024-02-05 10:29:59,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-02-05 10:29:59,937 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:29:59,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:29:59,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1745149563, now seen corresponding path program 14 times [2024-02-05 10:29:59,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:29:59,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462069205] [2024-02-05 10:29:59,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:29:59,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:29:59,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:00,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:00,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:00,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462069205] [2024-02-05 10:30:00,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462069205] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:00,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:00,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:30:00,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852682126] [2024-02-05 10:30:00,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:00,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:30:00,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:00,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:30:00,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:30:00,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:30:00,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 558 transitions, 10813 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:00,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:00,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:30:00,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:01,535 INFO L124 PetriNetUnfolderBase]: 2987/5516 cut-off events. [2024-02-05 10:30:01,536 INFO L125 PetriNetUnfolderBase]: For 135645/136273 co-relation queries the response was YES. [2024-02-05 10:30:01,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35699 conditions, 5516 events. 2987/5516 cut-off events. For 135645/136273 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 39830 event pairs, 329 based on Foata normal form. 97/5464 useless extension candidates. Maximal degree in co-relation 35586. Up to 1704 conditions per place. [2024-02-05 10:30:01,597 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 334 selfloop transitions, 266 changer transitions 0/634 dead transitions. [2024-02-05 10:30:01,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 634 transitions, 12667 flow [2024-02-05 10:30:01,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-05 10:30:01,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-05 10:30:01,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 353 transitions. [2024-02-05 10:30:01,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4396014943960149 [2024-02-05 10:30:01,598 INFO L175 Difference]: Start difference. First operand has 408 places, 558 transitions, 10813 flow. Second operand 11 states and 353 transitions. [2024-02-05 10:30:01,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 634 transitions, 12667 flow [2024-02-05 10:30:02,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 634 transitions, 12209 flow, removed 12 selfloop flow, removed 11 redundant places. [2024-02-05 10:30:02,118 INFO L231 Difference]: Finished difference. Result has 409 places, 567 transitions, 11056 flow [2024-02-05 10:30:02,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10371, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=257, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11056, PETRI_PLACES=409, PETRI_TRANSITIONS=567} [2024-02-05 10:30:02,119 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 332 predicate places. [2024-02-05 10:30:02,119 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 567 transitions, 11056 flow [2024-02-05 10:30:02,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:02,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:02,119 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] [2024-02-05 10:30:02,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-02-05 10:30:02,119 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:30:02,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:02,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1000551013, now seen corresponding path program 15 times [2024-02-05 10:30:02,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:02,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574713007] [2024-02-05 10:30:02,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:02,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:02,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:02,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:02,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:02,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574713007] [2024-02-05 10:30:02,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574713007] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:02,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:02,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:30:02,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701211528] [2024-02-05 10:30:02,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:02,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:30:02,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:02,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:30:02,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:30:02,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:30:02,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 567 transitions, 11056 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:02,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:02,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:30:02,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:03,688 INFO L124 PetriNetUnfolderBase]: 3128/5719 cut-off events. [2024-02-05 10:30:03,689 INFO L125 PetriNetUnfolderBase]: For 143408/144032 co-relation queries the response was YES. [2024-02-05 10:30:03,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37524 conditions, 5719 events. 3128/5719 cut-off events. For 143408/144032 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 41151 event pairs, 279 based on Foata normal form. 114/5665 useless extension candidates. Maximal degree in co-relation 37411. Up to 1775 conditions per place. [2024-02-05 10:30:03,765 INFO L140 encePairwiseOnDemand]: 57/73 looper letters, 318 selfloop transitions, 301 changer transitions 0/653 dead transitions. [2024-02-05 10:30:03,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 653 transitions, 13195 flow [2024-02-05 10:30:03,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-05 10:30:03,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-05 10:30:03,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 376 transitions. [2024-02-05 10:30:03,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4292237442922374 [2024-02-05 10:30:03,766 INFO L175 Difference]: Start difference. First operand has 409 places, 567 transitions, 11056 flow. Second operand 12 states and 376 transitions. [2024-02-05 10:30:03,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 653 transitions, 13195 flow [2024-02-05 10:30:04,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 653 transitions, 12738 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-02-05 10:30:04,319 INFO L231 Difference]: Finished difference. Result has 415 places, 590 transitions, 11646 flow [2024-02-05 10:30:04,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10629, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=567, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=278, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11646, PETRI_PLACES=415, PETRI_TRANSITIONS=590} [2024-02-05 10:30:04,320 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 338 predicate places. [2024-02-05 10:30:04,320 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 590 transitions, 11646 flow [2024-02-05 10:30:04,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:04,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:04,321 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] [2024-02-05 10:30:04,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-02-05 10:30:04,321 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:30:04,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:04,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1771844283, now seen corresponding path program 16 times [2024-02-05 10:30:04,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:04,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004576235] [2024-02-05 10:30:04,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:04,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:04,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:04,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:04,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:04,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004576235] [2024-02-05 10:30:04,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004576235] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:04,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:04,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:30:04,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398151862] [2024-02-05 10:30:04,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:04,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:30:04,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:04,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:30:04,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:30:04,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:30:04,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 590 transitions, 11646 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:04,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:04,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:30:04,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:05,910 INFO L124 PetriNetUnfolderBase]: 3047/5626 cut-off events. [2024-02-05 10:30:05,910 INFO L125 PetriNetUnfolderBase]: For 144191/144893 co-relation queries the response was YES. [2024-02-05 10:30:05,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38110 conditions, 5626 events. 3047/5626 cut-off events. For 144191/144893 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 40870 event pairs, 346 based on Foata normal form. 97/5574 useless extension candidates. Maximal degree in co-relation 37995. Up to 1732 conditions per place. [2024-02-05 10:30:05,985 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 347 selfloop transitions, 281 changer transitions 0/662 dead transitions. [2024-02-05 10:30:05,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 662 transitions, 13508 flow [2024-02-05 10:30:05,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-02-05 10:30:05,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-02-05 10:30:05,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 408 transitions. [2024-02-05 10:30:05,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42992623814541625 [2024-02-05 10:30:05,987 INFO L175 Difference]: Start difference. First operand has 415 places, 590 transitions, 11646 flow. Second operand 13 states and 408 transitions. [2024-02-05 10:30:05,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 662 transitions, 13508 flow [2024-02-05 10:30:06,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 662 transitions, 13015 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-02-05 10:30:06,503 INFO L231 Difference]: Finished difference. Result has 419 places, 590 transitions, 11743 flow [2024-02-05 10:30:06,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=11169, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=590, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=281, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=11743, PETRI_PLACES=419, PETRI_TRANSITIONS=590} [2024-02-05 10:30:06,524 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 342 predicate places. [2024-02-05 10:30:06,524 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 590 transitions, 11743 flow [2024-02-05 10:30:06,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:06,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:06,525 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] [2024-02-05 10:30:06,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-02-05 10:30:06,525 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:30:06,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:06,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1886120263, now seen corresponding path program 17 times [2024-02-05 10:30:06,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:06,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822618330] [2024-02-05 10:30:06,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:06,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:06,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:06,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:06,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:06,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822618330] [2024-02-05 10:30:06,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822618330] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:06,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:06,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:30:06,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001031062] [2024-02-05 10:30:06,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:06,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:30:06,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:06,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:30:06,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:30:06,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:30:06,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 590 transitions, 11743 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:06,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:06,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:30:06,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:08,232 INFO L124 PetriNetUnfolderBase]: 3104/5679 cut-off events. [2024-02-05 10:30:08,232 INFO L125 PetriNetUnfolderBase]: For 152840/153500 co-relation queries the response was YES. [2024-02-05 10:30:08,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38807 conditions, 5679 events. 3104/5679 cut-off events. For 152840/153500 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 40850 event pairs, 279 based on Foata normal form. 114/5625 useless extension candidates. Maximal degree in co-relation 38692. Up to 1767 conditions per place. [2024-02-05 10:30:08,299 INFO L140 encePairwiseOnDemand]: 57/73 looper letters, 326 selfloop transitions, 301 changer transitions 0/661 dead transitions. [2024-02-05 10:30:08,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 661 transitions, 13613 flow [2024-02-05 10:30:08,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-02-05 10:30:08,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-02-05 10:30:08,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 431 transitions. [2024-02-05 10:30:08,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4217221135029354 [2024-02-05 10:30:08,301 INFO L175 Difference]: Start difference. First operand has 419 places, 590 transitions, 11743 flow. Second operand 14 states and 431 transitions. [2024-02-05 10:30:08,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 661 transitions, 13613 flow [2024-02-05 10:30:08,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 661 transitions, 13080 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-02-05 10:30:08,893 INFO L231 Difference]: Finished difference. Result has 423 places, 590 transitions, 11832 flow [2024-02-05 10:30:08,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=11214, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=590, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=301, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=11832, PETRI_PLACES=423, PETRI_TRANSITIONS=590} [2024-02-05 10:30:08,893 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 346 predicate places. [2024-02-05 10:30:08,893 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 590 transitions, 11832 flow [2024-02-05 10:30:08,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:08,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:08,894 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] [2024-02-05 10:30:08,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-02-05 10:30:08,894 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:30:08,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:08,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1936596731, now seen corresponding path program 18 times [2024-02-05 10:30:08,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:08,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995834767] [2024-02-05 10:30:08,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:08,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:08,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:09,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:09,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:09,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995834767] [2024-02-05 10:30:09,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995834767] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:09,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:09,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:30:09,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107128720] [2024-02-05 10:30:09,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:09,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:30:09,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:09,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:30:09,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:30:09,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:30:09,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 590 transitions, 11832 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:09,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:09,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:30:09,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:10,531 INFO L124 PetriNetUnfolderBase]: 3023/5589 cut-off events. [2024-02-05 10:30:10,531 INFO L125 PetriNetUnfolderBase]: For 147229/147930 co-relation queries the response was YES. [2024-02-05 10:30:10,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38052 conditions, 5589 events. 3023/5589 cut-off events. For 147229/147930 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 40561 event pairs, 308 based on Foata normal form. 77/5517 useless extension candidates. Maximal degree in co-relation 37937. Up to 1724 conditions per place. [2024-02-05 10:30:10,604 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 301 selfloop transitions, 315 changer transitions 0/650 dead transitions. [2024-02-05 10:30:10,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 650 transitions, 13519 flow [2024-02-05 10:30:10,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-05 10:30:10,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-05 10:30:10,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 373 transitions. [2024-02-05 10:30:10,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4257990867579909 [2024-02-05 10:30:10,605 INFO L175 Difference]: Start difference. First operand has 423 places, 590 transitions, 11832 flow. Second operand 12 states and 373 transitions. [2024-02-05 10:30:10,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 650 transitions, 13519 flow [2024-02-05 10:30:11,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 650 transitions, 12940 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-02-05 10:30:11,140 INFO L231 Difference]: Finished difference. Result has 423 places, 590 transitions, 11899 flow [2024-02-05 10:30:11,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=11259, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=590, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=315, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=11899, PETRI_PLACES=423, PETRI_TRANSITIONS=590} [2024-02-05 10:30:11,141 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 346 predicate places. [2024-02-05 10:30:11,141 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 590 transitions, 11899 flow [2024-02-05 10:30:11,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:11,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:11,141 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] [2024-02-05 10:30:11,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-02-05 10:30:11,141 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:30:11,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:11,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1191998181, now seen corresponding path program 19 times [2024-02-05 10:30:11,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:11,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175277910] [2024-02-05 10:30:11,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:11,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:11,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:11,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:11,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:11,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175277910] [2024-02-05 10:30:11,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175277910] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:11,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:11,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:30:11,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797264161] [2024-02-05 10:30:11,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:11,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:30:11,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:11,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:30:11,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:30:11,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:30:11,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 590 transitions, 11899 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:11,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:11,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:30:11,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:12,833 INFO L124 PetriNetUnfolderBase]: 3280/6024 cut-off events. [2024-02-05 10:30:12,834 INFO L125 PetriNetUnfolderBase]: For 162736/163393 co-relation queries the response was YES. [2024-02-05 10:30:12,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40891 conditions, 6024 events. 3280/6024 cut-off events. For 162736/163393 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 43826 event pairs, 262 based on Foata normal form. 114/5976 useless extension candidates. Maximal degree in co-relation 40776. Up to 1835 conditions per place. [2024-02-05 10:30:12,901 INFO L140 encePairwiseOnDemand]: 57/73 looper letters, 293 selfloop transitions, 348 changer transitions 0/675 dead transitions. [2024-02-05 10:30:12,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 675 transitions, 14181 flow [2024-02-05 10:30:12,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-02-05 10:30:12,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-02-05 10:30:12,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 400 transitions. [2024-02-05 10:30:12,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4214963119072708 [2024-02-05 10:30:12,903 INFO L175 Difference]: Start difference. First operand has 423 places, 590 transitions, 11899 flow. Second operand 13 states and 400 transitions. [2024-02-05 10:30:12,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 675 transitions, 14181 flow [2024-02-05 10:30:13,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 675 transitions, 13758 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-02-05 10:30:13,401 INFO L231 Difference]: Finished difference. Result has 430 places, 618 transitions, 12902 flow [2024-02-05 10:30:13,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=11496, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=590, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=320, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=12902, PETRI_PLACES=430, PETRI_TRANSITIONS=618} [2024-02-05 10:30:13,402 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 353 predicate places. [2024-02-05 10:30:13,402 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 618 transitions, 12902 flow [2024-02-05 10:30:13,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:13,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:13,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:30:13,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-02-05 10:30:13,403 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:30:13,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:13,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1054634955, now seen corresponding path program 20 times [2024-02-05 10:30:13,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:13,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679562381] [2024-02-05 10:30:13,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:13,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:13,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:13,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:13,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:13,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679562381] [2024-02-05 10:30:13,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679562381] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:13,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:13,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-02-05 10:30:13,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357508765] [2024-02-05 10:30:13,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:13,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-02-05 10:30:13,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:13,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-02-05 10:30:13,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-02-05 10:30:13,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:30:13,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 618 transitions, 12902 flow. Second operand has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:13,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:13,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:30:13,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:15,315 INFO L124 PetriNetUnfolderBase]: 3412/6214 cut-off events. [2024-02-05 10:30:15,315 INFO L125 PetriNetUnfolderBase]: For 177734/178391 co-relation queries the response was YES. [2024-02-05 10:30:15,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43068 conditions, 6214 events. 3412/6214 cut-off events. For 177734/178391 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 45137 event pairs, 280 based on Foata normal form. 88/6134 useless extension candidates. Maximal degree in co-relation 42952. Up to 1879 conditions per place. [2024-02-05 10:30:15,395 INFO L140 encePairwiseOnDemand]: 57/73 looper letters, 288 selfloop transitions, 361 changer transitions 0/683 dead transitions. [2024-02-05 10:30:15,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 683 transitions, 14738 flow [2024-02-05 10:30:15,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-02-05 10:30:15,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-02-05 10:30:15,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 394 transitions. [2024-02-05 10:30:15,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41517386722866173 [2024-02-05 10:30:15,396 INFO L175 Difference]: Start difference. First operand has 430 places, 618 transitions, 12902 flow. Second operand 13 states and 394 transitions. [2024-02-05 10:30:15,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 683 transitions, 14738 flow [2024-02-05 10:30:16,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 683 transitions, 14281 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-02-05 10:30:16,130 INFO L231 Difference]: Finished difference. Result has 437 places, 632 transitions, 13475 flow [2024-02-05 10:30:16,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12455, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=618, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=347, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=13475, PETRI_PLACES=437, PETRI_TRANSITIONS=632} [2024-02-05 10:30:16,130 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 360 predicate places. [2024-02-05 10:30:16,130 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 632 transitions, 13475 flow [2024-02-05 10:30:16,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 22.6) internal successors, (226), 10 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:16,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:16,131 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] [2024-02-05 10:30:16,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-02-05 10:30:16,131 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:30:16,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:16,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1439256504, now seen corresponding path program 1 times [2024-02-05 10:30:16,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:16,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392815981] [2024-02-05 10:30:16,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:16,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:16,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:16,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:16,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:16,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392815981] [2024-02-05 10:30:16,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392815981] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:16,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:16,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-05 10:30:16,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799777150] [2024-02-05 10:30:16,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:16,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-05 10:30:16,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:16,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-05 10:30:16,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-02-05 10:30:16,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:30:16,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 632 transitions, 13475 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:16,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:16,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:30:16,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:18,449 INFO L124 PetriNetUnfolderBase]: 3367/6375 cut-off events. [2024-02-05 10:30:18,449 INFO L125 PetriNetUnfolderBase]: For 199591/200037 co-relation queries the response was YES. [2024-02-05 10:30:18,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45655 conditions, 6375 events. 3367/6375 cut-off events. For 199591/200037 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 48639 event pairs, 589 based on Foata normal form. 74/6282 useless extension candidates. Maximal degree in co-relation 45537. Up to 1927 conditions per place. [2024-02-05 10:30:18,550 INFO L140 encePairwiseOnDemand]: 61/73 looper letters, 503 selfloop transitions, 143 changer transitions 17/697 dead transitions. [2024-02-05 10:30:18,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 697 transitions, 15549 flow [2024-02-05 10:30:18,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-05 10:30:18,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-05 10:30:18,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 325 transitions. [2024-02-05 10:30:18,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4452054794520548 [2024-02-05 10:30:18,552 INFO L175 Difference]: Start difference. First operand has 437 places, 632 transitions, 13475 flow. Second operand 10 states and 325 transitions. [2024-02-05 10:30:18,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 697 transitions, 15549 flow [2024-02-05 10:30:19,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 697 transitions, 14810 flow, removed 46 selfloop flow, removed 15 redundant places. [2024-02-05 10:30:19,422 INFO L231 Difference]: Finished difference. Result has 434 places, 617 transitions, 12922 flow [2024-02-05 10:30:19,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12792, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=632, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=489, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12922, PETRI_PLACES=434, PETRI_TRANSITIONS=617} [2024-02-05 10:30:19,423 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 357 predicate places. [2024-02-05 10:30:19,423 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 617 transitions, 12922 flow [2024-02-05 10:30:19,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:19,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:19,424 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] [2024-02-05 10:30:19,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-02-05 10:30:19,424 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:30:19,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:19,424 INFO L85 PathProgramCache]: Analyzing trace with hash -2082046030, now seen corresponding path program 1 times [2024-02-05 10:30:19,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:19,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458459776] [2024-02-05 10:30:19,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:19,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:19,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:19,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:19,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:19,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458459776] [2024-02-05 10:30:19,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458459776] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:19,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:19,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-05 10:30:19,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89826991] [2024-02-05 10:30:19,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:19,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-05 10:30:19,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:19,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-05 10:30:19,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-02-05 10:30:19,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:30:19,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 617 transitions, 12922 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:19,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:19,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:30:19,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:21,413 INFO L124 PetriNetUnfolderBase]: 3449/6608 cut-off events. [2024-02-05 10:30:21,414 INFO L125 PetriNetUnfolderBase]: For 193253/193981 co-relation queries the response was YES. [2024-02-05 10:30:21,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45439 conditions, 6608 events. 3449/6608 cut-off events. For 193253/193981 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 51416 event pairs, 756 based on Foata normal form. 107/6578 useless extension candidates. Maximal degree in co-relation 45320. Up to 2628 conditions per place. [2024-02-05 10:30:21,486 INFO L140 encePairwiseOnDemand]: 60/73 looper letters, 566 selfloop transitions, 118 changer transitions 4/722 dead transitions. [2024-02-05 10:30:21,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 722 transitions, 15399 flow [2024-02-05 10:30:21,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-05 10:30:21,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-05 10:30:21,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 358 transitions. [2024-02-05 10:30:21,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44582814445828145 [2024-02-05 10:30:21,488 INFO L175 Difference]: Start difference. First operand has 434 places, 617 transitions, 12922 flow. Second operand 11 states and 358 transitions. [2024-02-05 10:30:21,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 722 transitions, 15399 flow [2024-02-05 10:30:22,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 722 transitions, 15116 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-02-05 10:30:22,191 INFO L231 Difference]: Finished difference. Result has 439 places, 620 transitions, 12964 flow [2024-02-05 10:30:22,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12651, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=617, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=499, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12964, PETRI_PLACES=439, PETRI_TRANSITIONS=620} [2024-02-05 10:30:22,191 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 362 predicate places. [2024-02-05 10:30:22,191 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 620 transitions, 12964 flow [2024-02-05 10:30:22,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:22,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:22,192 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] [2024-02-05 10:30:22,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-02-05 10:30:22,192 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:30:22,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:22,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1000130548, now seen corresponding path program 2 times [2024-02-05 10:30:22,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:22,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209737572] [2024-02-05 10:30:22,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:22,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:22,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:22,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:22,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:22,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209737572] [2024-02-05 10:30:22,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209737572] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:22,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:22,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-05 10:30:22,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195611610] [2024-02-05 10:30:22,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:22,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-05 10:30:22,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:22,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-05 10:30:22,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-02-05 10:30:22,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:30:22,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 620 transitions, 12964 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:22,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:22,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:30:22,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:24,308 INFO L124 PetriNetUnfolderBase]: 3484/6844 cut-off events. [2024-02-05 10:30:24,309 INFO L125 PetriNetUnfolderBase]: For 210992/211480 co-relation queries the response was YES. [2024-02-05 10:30:24,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48022 conditions, 6844 events. 3484/6844 cut-off events. For 210992/211480 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 54574 event pairs, 558 based on Foata normal form. 94/6760 useless extension candidates. Maximal degree in co-relation 47901. Up to 2849 conditions per place. [2024-02-05 10:30:24,385 INFO L140 encePairwiseOnDemand]: 56/73 looper letters, 494 selfloop transitions, 162 changer transitions 4/694 dead transitions. [2024-02-05 10:30:24,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 694 transitions, 15109 flow [2024-02-05 10:30:24,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-05 10:30:24,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-05 10:30:24,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 364 transitions. [2024-02-05 10:30:24,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4533001245330012 [2024-02-05 10:30:24,387 INFO L175 Difference]: Start difference. First operand has 439 places, 620 transitions, 12964 flow. Second operand 11 states and 364 transitions. [2024-02-05 10:30:24,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 694 transitions, 15109 flow [2024-02-05 10:30:25,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 694 transitions, 14945 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-02-05 10:30:25,147 INFO L231 Difference]: Finished difference. Result has 445 places, 619 transitions, 13188 flow [2024-02-05 10:30:25,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12800, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=620, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=458, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13188, PETRI_PLACES=445, PETRI_TRANSITIONS=619} [2024-02-05 10:30:25,155 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 368 predicate places. [2024-02-05 10:30:25,155 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 619 transitions, 13188 flow [2024-02-05 10:30:25,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:25,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:25,155 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] [2024-02-05 10:30:25,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-02-05 10:30:25,156 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:30:25,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:25,156 INFO L85 PathProgramCache]: Analyzing trace with hash 871139500, now seen corresponding path program 3 times [2024-02-05 10:30:25,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:25,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516682452] [2024-02-05 10:30:25,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:25,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:25,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:25,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:25,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:25,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516682452] [2024-02-05 10:30:25,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516682452] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:25,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:25,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-05 10:30:25,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479998842] [2024-02-05 10:30:25,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:25,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-05 10:30:25,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:25,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-05 10:30:25,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-02-05 10:30:25,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:30:25,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 619 transitions, 13188 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:25,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:25,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:30:25,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:27,225 INFO L124 PetriNetUnfolderBase]: 3479/6861 cut-off events. [2024-02-05 10:30:27,225 INFO L125 PetriNetUnfolderBase]: For 218238/218767 co-relation queries the response was YES. [2024-02-05 10:30:27,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49452 conditions, 6861 events. 3479/6861 cut-off events. For 218238/218767 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 54799 event pairs, 565 based on Foata normal form. 92/6784 useless extension candidates. Maximal degree in co-relation 49328. Up to 2849 conditions per place. [2024-02-05 10:30:27,308 INFO L140 encePairwiseOnDemand]: 58/73 looper letters, 500 selfloop transitions, 160 changer transitions 7/701 dead transitions. [2024-02-05 10:30:27,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 701 transitions, 15413 flow [2024-02-05 10:30:27,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-02-05 10:30:27,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-02-05 10:30:27,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 420 transitions. [2024-02-05 10:30:27,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44257112750263433 [2024-02-05 10:30:27,309 INFO L175 Difference]: Start difference. First operand has 445 places, 619 transitions, 13188 flow. Second operand 13 states and 420 transitions. [2024-02-05 10:30:27,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 701 transitions, 15413 flow [2024-02-05 10:30:28,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 701 transitions, 15176 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-02-05 10:30:28,123 INFO L231 Difference]: Finished difference. Result has 450 places, 612 transitions, 13220 flow [2024-02-05 10:30:28,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12959, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=619, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=13220, PETRI_PLACES=450, PETRI_TRANSITIONS=612} [2024-02-05 10:30:28,123 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 373 predicate places. [2024-02-05 10:30:28,124 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 612 transitions, 13220 flow [2024-02-05 10:30:28,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:28,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:28,124 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] [2024-02-05 10:30:28,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-02-05 10:30:28,124 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:30:28,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:28,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1129778306, now seen corresponding path program 4 times [2024-02-05 10:30:28,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:28,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854749706] [2024-02-05 10:30:28,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:28,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:28,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:28,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:28,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:28,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854749706] [2024-02-05 10:30:28,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854749706] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:28,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:28,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-05 10:30:28,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309632661] [2024-02-05 10:30:28,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:28,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-05 10:30:28,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:28,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-05 10:30:28,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-02-05 10:30:28,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:30:28,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 612 transitions, 13220 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:28,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:28,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:30:28,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:30,268 INFO L124 PetriNetUnfolderBase]: 3575/7156 cut-off events. [2024-02-05 10:30:30,268 INFO L125 PetriNetUnfolderBase]: For 232391/232950 co-relation queries the response was YES. [2024-02-05 10:30:30,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52567 conditions, 7156 events. 3575/7156 cut-off events. For 232391/232950 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 58289 event pairs, 583 based on Foata normal form. 80/7052 useless extension candidates. Maximal degree in co-relation 52443. Up to 2163 conditions per place. [2024-02-05 10:30:30,362 INFO L140 encePairwiseOnDemand]: 55/73 looper letters, 423 selfloop transitions, 255 changer transitions 8/720 dead transitions. [2024-02-05 10:30:30,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 720 transitions, 16204 flow [2024-02-05 10:30:30,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-02-05 10:30:30,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-02-05 10:30:30,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 450 transitions. [2024-02-05 10:30:30,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44031311154598823 [2024-02-05 10:30:30,364 INFO L175 Difference]: Start difference. First operand has 450 places, 612 transitions, 13220 flow. Second operand 14 states and 450 transitions. [2024-02-05 10:30:30,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 720 transitions, 16204 flow [2024-02-05 10:30:31,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 720 transitions, 15914 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-02-05 10:30:31,226 INFO L231 Difference]: Finished difference. Result has 454 places, 633 transitions, 14241 flow [2024-02-05 10:30:31,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12938, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=612, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=227, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=14241, PETRI_PLACES=454, PETRI_TRANSITIONS=633} [2024-02-05 10:30:31,227 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 377 predicate places. [2024-02-05 10:30:31,227 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 633 transitions, 14241 flow [2024-02-05 10:30:31,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:31,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:31,227 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] [2024-02-05 10:30:31,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-02-05 10:30:31,228 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:30:31,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:31,228 INFO L85 PathProgramCache]: Analyzing trace with hash -933333460, now seen corresponding path program 5 times [2024-02-05 10:30:31,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:31,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37651664] [2024-02-05 10:30:31,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:31,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:31,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:31,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:31,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:31,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37651664] [2024-02-05 10:30:31,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37651664] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:31,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:31,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-05 10:30:31,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070894673] [2024-02-05 10:30:31,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:31,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-05 10:30:31,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:31,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-05 10:30:31,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-02-05 10:30:31,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:30:31,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 633 transitions, 14241 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:31,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:31,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:30:31,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:33,452 INFO L124 PetriNetUnfolderBase]: 3577/7191 cut-off events. [2024-02-05 10:30:33,452 INFO L125 PetriNetUnfolderBase]: For 242010/242569 co-relation queries the response was YES. [2024-02-05 10:30:33,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54787 conditions, 7191 events. 3577/7191 cut-off events. For 242010/242569 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 58832 event pairs, 522 based on Foata normal form. 80/7087 useless extension candidates. Maximal degree in co-relation 54662. Up to 2316 conditions per place. [2024-02-05 10:30:33,557 INFO L140 encePairwiseOnDemand]: 58/73 looper letters, 429 selfloop transitions, 227 changer transitions 13/703 dead transitions. [2024-02-05 10:30:33,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 703 transitions, 16326 flow [2024-02-05 10:30:33,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-05 10:30:33,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-05 10:30:33,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 382 transitions. [2024-02-05 10:30:33,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4360730593607306 [2024-02-05 10:30:33,558 INFO L175 Difference]: Start difference. First operand has 454 places, 633 transitions, 14241 flow. Second operand 12 states and 382 transitions. [2024-02-05 10:30:33,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 703 transitions, 16326 flow [2024-02-05 10:30:34,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 703 transitions, 16045 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-02-05 10:30:34,581 INFO L231 Difference]: Finished difference. Result has 457 places, 625 transitions, 14371 flow [2024-02-05 10:30:34,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=13969, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=223, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=14371, PETRI_PLACES=457, PETRI_TRANSITIONS=625} [2024-02-05 10:30:34,597 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 380 predicate places. [2024-02-05 10:30:34,597 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 625 transitions, 14371 flow [2024-02-05 10:30:34,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:34,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:34,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:30:34,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-02-05 10:30:34,597 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:30:34,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:34,598 INFO L85 PathProgramCache]: Analyzing trace with hash -839382714, now seen corresponding path program 2 times [2024-02-05 10:30:34,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:34,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756026456] [2024-02-05 10:30:34,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:34,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:34,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:34,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:34,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:34,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756026456] [2024-02-05 10:30:34,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756026456] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:34,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:34,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-05 10:30:34,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377436084] [2024-02-05 10:30:34,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:34,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-05 10:30:34,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:34,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-05 10:30:34,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-02-05 10:30:34,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:30:34,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 625 transitions, 14371 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:34,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:34,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:30:34,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:36,854 INFO L124 PetriNetUnfolderBase]: 3636/7168 cut-off events. [2024-02-05 10:30:36,854 INFO L125 PetriNetUnfolderBase]: For 242800/243990 co-relation queries the response was YES. [2024-02-05 10:30:36,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56092 conditions, 7168 events. 3636/7168 cut-off events. For 242800/243990 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 57471 event pairs, 902 based on Foata normal form. 89/7085 useless extension candidates. Maximal degree in co-relation 55965. Up to 3728 conditions per place. [2024-02-05 10:30:36,982 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 524 selfloop transitions, 118 changer transitions 15/690 dead transitions. [2024-02-05 10:30:36,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 690 transitions, 16330 flow [2024-02-05 10:30:36,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-05 10:30:36,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-05 10:30:36,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 350 transitions. [2024-02-05 10:30:36,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43586550435865506 [2024-02-05 10:30:36,984 INFO L175 Difference]: Start difference. First operand has 457 places, 625 transitions, 14371 flow. Second operand 11 states and 350 transitions. [2024-02-05 10:30:36,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 690 transitions, 16330 flow [2024-02-05 10:30:38,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 690 transitions, 15927 flow, removed 12 selfloop flow, removed 16 redundant places. [2024-02-05 10:30:38,057 INFO L231 Difference]: Finished difference. Result has 452 places, 610 transitions, 13982 flow [2024-02-05 10:30:38,057 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=13976, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=507, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13982, PETRI_PLACES=452, PETRI_TRANSITIONS=610} [2024-02-05 10:30:38,057 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 375 predicate places. [2024-02-05 10:30:38,057 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 610 transitions, 13982 flow [2024-02-05 10:30:38,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:38,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:38,058 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] [2024-02-05 10:30:38,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-02-05 10:30:38,058 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:30:38,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:38,058 INFO L85 PathProgramCache]: Analyzing trace with hash 945981058, now seen corresponding path program 6 times [2024-02-05 10:30:38,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:38,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151902153] [2024-02-05 10:30:38,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:38,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:38,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:38,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:38,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:38,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151902153] [2024-02-05 10:30:38,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151902153] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:38,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:38,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-05 10:30:38,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214589473] [2024-02-05 10:30:38,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:38,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-05 10:30:38,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:38,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-05 10:30:38,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-02-05 10:30:38,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:30:38,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 610 transitions, 13982 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:38,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:38,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:30:38,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:40,299 INFO L124 PetriNetUnfolderBase]: 3444/7018 cut-off events. [2024-02-05 10:30:40,300 INFO L125 PetriNetUnfolderBase]: For 236638/237121 co-relation queries the response was YES. [2024-02-05 10:30:40,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54245 conditions, 7018 events. 3444/7018 cut-off events. For 236638/237121 co-relation queries the response was YES. Maximal size of possible extension queue 469. Compared 57759 event pairs, 800 based on Foata normal form. 106/6963 useless extension candidates. Maximal degree in co-relation 54120. Up to 2113 conditions per place. [2024-02-05 10:30:40,375 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 421 selfloop transitions, 167 changer transitions 40/662 dead transitions. [2024-02-05 10:30:40,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 662 transitions, 15857 flow [2024-02-05 10:30:40,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-05 10:30:40,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-05 10:30:40,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 295 transitions. [2024-02-05 10:30:40,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4490106544901065 [2024-02-05 10:30:40,377 INFO L175 Difference]: Start difference. First operand has 452 places, 610 transitions, 13982 flow. Second operand 9 states and 295 transitions. [2024-02-05 10:30:40,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 662 transitions, 15857 flow [2024-02-05 10:30:41,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 662 transitions, 15482 flow, removed 18 selfloop flow, removed 20 redundant places. [2024-02-05 10:30:41,224 INFO L231 Difference]: Finished difference. Result has 441 places, 571 transitions, 13231 flow [2024-02-05 10:30:41,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=13631, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=610, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13231, PETRI_PLACES=441, PETRI_TRANSITIONS=571} [2024-02-05 10:30:41,224 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 364 predicate places. [2024-02-05 10:30:41,224 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 571 transitions, 13231 flow [2024-02-05 10:30:41,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:41,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:41,225 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] [2024-02-05 10:30:41,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-02-05 10:30:41,225 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:30:41,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:41,225 INFO L85 PathProgramCache]: Analyzing trace with hash 766969784, now seen corresponding path program 3 times [2024-02-05 10:30:41,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:41,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751712950] [2024-02-05 10:30:41,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:41,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:41,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:41,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:41,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:41,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751712950] [2024-02-05 10:30:41,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751712950] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:41,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:41,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-05 10:30:41,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652536362] [2024-02-05 10:30:41,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:41,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-05 10:30:41,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:41,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-05 10:30:41,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-02-05 10:30:41,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:30:41,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 571 transitions, 13231 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:41,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:41,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:30:41,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:43,564 INFO L124 PetriNetUnfolderBase]: 3580/7204 cut-off events. [2024-02-05 10:30:43,564 INFO L125 PetriNetUnfolderBase]: For 226162/227308 co-relation queries the response was YES. [2024-02-05 10:30:43,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55519 conditions, 7204 events. 3580/7204 cut-off events. For 226162/227308 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 59171 event pairs, 1154 based on Foata normal form. 67/7079 useless extension candidates. Maximal degree in co-relation 55398. Up to 4984 conditions per place. [2024-02-05 10:30:43,848 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 543 selfloop transitions, 88 changer transitions 11/674 dead transitions. [2024-02-05 10:30:43,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 674 transitions, 15636 flow [2024-02-05 10:30:43,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-05 10:30:43,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-05 10:30:43,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 378 transitions. [2024-02-05 10:30:43,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4315068493150685 [2024-02-05 10:30:43,850 INFO L175 Difference]: Start difference. First operand has 441 places, 571 transitions, 13231 flow. Second operand 12 states and 378 transitions. [2024-02-05 10:30:43,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 674 transitions, 15636 flow [2024-02-05 10:30:44,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 674 transitions, 15049 flow, removed 13 selfloop flow, removed 18 redundant places. [2024-02-05 10:30:44,679 INFO L231 Difference]: Finished difference. Result has 435 places, 562 transitions, 12627 flow [2024-02-05 10:30:44,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12648, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=571, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12627, PETRI_PLACES=435, PETRI_TRANSITIONS=562} [2024-02-05 10:30:44,680 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 358 predicate places. [2024-02-05 10:30:44,680 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 562 transitions, 12627 flow [2024-02-05 10:30:44,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:44,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:44,680 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] [2024-02-05 10:30:44,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-02-05 10:30:44,681 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:30:44,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:44,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1313171704, now seen corresponding path program 4 times [2024-02-05 10:30:44,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:44,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293276766] [2024-02-05 10:30:44,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:44,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:44,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:44,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:44,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:44,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293276766] [2024-02-05 10:30:44,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293276766] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:44,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:44,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-05 10:30:44,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404153376] [2024-02-05 10:30:44,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:44,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-05 10:30:44,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:44,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-05 10:30:44,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-02-05 10:30:45,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:30:45,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 562 transitions, 12627 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:45,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:45,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:30:45,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:46,811 INFO L124 PetriNetUnfolderBase]: 3503/7074 cut-off events. [2024-02-05 10:30:46,811 INFO L125 PetriNetUnfolderBase]: For 212276/213385 co-relation queries the response was YES. [2024-02-05 10:30:46,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53524 conditions, 7074 events. 3503/7074 cut-off events. For 212276/213385 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 57957 event pairs, 1133 based on Foata normal form. 61/6949 useless extension candidates. Maximal degree in co-relation 53406. Up to 4984 conditions per place. [2024-02-05 10:30:46,901 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 512 selfloop transitions, 92 changer transitions 20/656 dead transitions. [2024-02-05 10:30:46,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 656 transitions, 14832 flow [2024-02-05 10:30:46,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-02-05 10:30:46,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-02-05 10:30:46,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 399 transitions. [2024-02-05 10:30:46,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4204425711275026 [2024-02-05 10:30:46,903 INFO L175 Difference]: Start difference. First operand has 435 places, 562 transitions, 12627 flow. Second operand 13 states and 399 transitions. [2024-02-05 10:30:46,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 656 transitions, 14832 flow [2024-02-05 10:30:47,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 656 transitions, 14653 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-02-05 10:30:47,770 INFO L231 Difference]: Finished difference. Result has 438 places, 545 transitions, 12347 flow [2024-02-05 10:30:47,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12448, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=562, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=12347, PETRI_PLACES=438, PETRI_TRANSITIONS=545} [2024-02-05 10:30:47,770 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 361 predicate places. [2024-02-05 10:30:47,770 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 545 transitions, 12347 flow [2024-02-05 10:30:47,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:47,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:47,771 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] [2024-02-05 10:30:47,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-02-05 10:30:47,771 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:30:47,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:47,771 INFO L85 PathProgramCache]: Analyzing trace with hash 831130252, now seen corresponding path program 5 times [2024-02-05 10:30:47,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:47,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835496509] [2024-02-05 10:30:47,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:47,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:47,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:48,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:48,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:48,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835496509] [2024-02-05 10:30:48,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835496509] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:48,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:48,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-05 10:30:48,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135805978] [2024-02-05 10:30:48,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:48,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-05 10:30:48,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:48,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-05 10:30:48,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-02-05 10:30:48,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:30:48,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 545 transitions, 12347 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:48,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:48,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:30:48,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:49,786 INFO L124 PetriNetUnfolderBase]: 3435/6938 cut-off events. [2024-02-05 10:30:49,787 INFO L125 PetriNetUnfolderBase]: For 206527/207635 co-relation queries the response was YES. [2024-02-05 10:30:49,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52580 conditions, 6938 events. 3435/6938 cut-off events. For 206527/207635 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 56673 event pairs, 1114 based on Foata normal form. 50/6800 useless extension candidates. Maximal degree in co-relation 52461. Up to 4984 conditions per place. [2024-02-05 10:30:49,873 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 513 selfloop transitions, 82 changer transitions 6/633 dead transitions. [2024-02-05 10:30:49,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 633 transitions, 14446 flow [2024-02-05 10:30:49,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-05 10:30:49,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-05 10:30:49,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 345 transitions. [2024-02-05 10:30:49,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42963885429638854 [2024-02-05 10:30:49,875 INFO L175 Difference]: Start difference. First operand has 438 places, 545 transitions, 12347 flow. Second operand 11 states and 345 transitions. [2024-02-05 10:30:49,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 633 transitions, 14446 flow [2024-02-05 10:30:50,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 633 transitions, 14297 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-02-05 10:30:50,702 INFO L231 Difference]: Finished difference. Result has 438 places, 540 transitions, 12271 flow [2024-02-05 10:30:50,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12198, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=463, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12271, PETRI_PLACES=438, PETRI_TRANSITIONS=540} [2024-02-05 10:30:50,703 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 361 predicate places. [2024-02-05 10:30:50,703 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 540 transitions, 12271 flow [2024-02-05 10:30:50,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:50,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:50,704 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] [2024-02-05 10:30:50,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-02-05 10:30:50,704 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:30:50,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:50,704 INFO L85 PathProgramCache]: Analyzing trace with hash -787155772, now seen corresponding path program 7 times [2024-02-05 10:30:50,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:50,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494773269] [2024-02-05 10:30:50,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:50,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:50,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:50,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:50,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:50,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494773269] [2024-02-05 10:30:50,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494773269] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:50,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:50,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-05 10:30:50,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366589674] [2024-02-05 10:30:50,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:50,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-05 10:30:50,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:50,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-05 10:30:50,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-02-05 10:30:51,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:30:51,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 540 transitions, 12271 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:51,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:51,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:30:51,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:52,846 INFO L124 PetriNetUnfolderBase]: 3225/6730 cut-off events. [2024-02-05 10:30:52,846 INFO L125 PetriNetUnfolderBase]: For 212865/213342 co-relation queries the response was YES. [2024-02-05 10:30:52,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50861 conditions, 6730 events. 3225/6730 cut-off events. For 212865/213342 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 56006 event pairs, 839 based on Foata normal form. 132/6715 useless extension candidates. Maximal degree in co-relation 50741. Up to 1908 conditions per place. [2024-02-05 10:30:52,942 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 406 selfloop transitions, 123 changer transitions 31/594 dead transitions. [2024-02-05 10:30:52,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 594 transitions, 14018 flow [2024-02-05 10:30:52,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-05 10:30:52,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-05 10:30:52,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 292 transitions. [2024-02-05 10:30:52,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-02-05 10:30:52,944 INFO L175 Difference]: Start difference. First operand has 438 places, 540 transitions, 12271 flow. Second operand 9 states and 292 transitions. [2024-02-05 10:30:52,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 594 transitions, 14018 flow [2024-02-05 10:30:53,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 594 transitions, 13840 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-02-05 10:30:53,756 INFO L231 Difference]: Finished difference. Result has 437 places, 509 transitions, 11809 flow [2024-02-05 10:30:53,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12093, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11809, PETRI_PLACES=437, PETRI_TRANSITIONS=509} [2024-02-05 10:30:53,756 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 360 predicate places. [2024-02-05 10:30:53,756 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 509 transitions, 11809 flow [2024-02-05 10:30:53,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:53,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:53,757 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] [2024-02-05 10:30:53,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-02-05 10:30:53,757 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:30:53,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:53,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1523903606, now seen corresponding path program 8 times [2024-02-05 10:30:53,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:53,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055637332] [2024-02-05 10:30:53,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:53,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:53,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:54,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:54,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:54,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055637332] [2024-02-05 10:30:54,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055637332] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:54,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:54,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-05 10:30:54,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429452532] [2024-02-05 10:30:54,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:54,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-05 10:30:54,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:54,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-05 10:30:54,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-02-05 10:30:54,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:30:54,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 509 transitions, 11809 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:54,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:54,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:30:54,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:55,840 INFO L124 PetriNetUnfolderBase]: 3065/6445 cut-off events. [2024-02-05 10:30:55,841 INFO L125 PetriNetUnfolderBase]: For 207380/207844 co-relation queries the response was YES. [2024-02-05 10:30:55,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48980 conditions, 6445 events. 3065/6445 cut-off events. For 207380/207844 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 53397 event pairs, 744 based on Foata normal form. 92/6408 useless extension candidates. Maximal degree in co-relation 48859. Up to 3299 conditions per place. [2024-02-05 10:30:55,914 INFO L140 encePairwiseOnDemand]: 60/73 looper letters, 388 selfloop transitions, 137 changer transitions 7/566 dead transitions. [2024-02-05 10:30:55,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 566 transitions, 13480 flow [2024-02-05 10:30:55,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-05 10:30:55,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-05 10:30:55,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 343 transitions. [2024-02-05 10:30:55,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42714819427148193 [2024-02-05 10:30:55,916 INFO L175 Difference]: Start difference. First operand has 437 places, 509 transitions, 11809 flow. Second operand 11 states and 343 transitions. [2024-02-05 10:30:55,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 566 transitions, 13480 flow [2024-02-05 10:30:56,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 566 transitions, 12932 flow, removed 10 selfloop flow, removed 25 redundant places. [2024-02-05 10:30:56,756 INFO L231 Difference]: Finished difference. Result has 421 places, 500 transitions, 11433 flow [2024-02-05 10:30:56,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=11191, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11433, PETRI_PLACES=421, PETRI_TRANSITIONS=500} [2024-02-05 10:30:56,772 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 344 predicate places. [2024-02-05 10:30:56,773 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 500 transitions, 11433 flow [2024-02-05 10:30:56,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:56,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:56,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:30:56,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-02-05 10:30:56,774 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:30:56,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:56,774 INFO L85 PathProgramCache]: Analyzing trace with hash -705251146, now seen corresponding path program 6 times [2024-02-05 10:30:56,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:56,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393423244] [2024-02-05 10:30:56,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:56,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:56,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:57,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:57,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:57,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393423244] [2024-02-05 10:30:57,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393423244] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:57,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:57,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-05 10:30:57,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611318263] [2024-02-05 10:30:57,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:57,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-05 10:30:57,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:57,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-05 10:30:57,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-02-05 10:30:57,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:30:57,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 500 transitions, 11433 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:57,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:57,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:30:57,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:30:58,759 INFO L124 PetriNetUnfolderBase]: 3197/6465 cut-off events. [2024-02-05 10:30:58,759 INFO L125 PetriNetUnfolderBase]: For 191426/192427 co-relation queries the response was YES. [2024-02-05 10:30:58,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48883 conditions, 6465 events. 3197/6465 cut-off events. For 191426/192427 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 51986 event pairs, 993 based on Foata normal form. 65/6379 useless extension candidates. Maximal degree in co-relation 48773. Up to 4483 conditions per place. [2024-02-05 10:30:58,840 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 493 selfloop transitions, 65 changer transitions 11/598 dead transitions. [2024-02-05 10:30:58,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 598 transitions, 13639 flow [2024-02-05 10:30:58,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-05 10:30:58,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-05 10:30:58,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 346 transitions. [2024-02-05 10:30:58,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43088418430884184 [2024-02-05 10:30:58,841 INFO L175 Difference]: Start difference. First operand has 421 places, 500 transitions, 11433 flow. Second operand 11 states and 346 transitions. [2024-02-05 10:30:58,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 598 transitions, 13639 flow [2024-02-05 10:30:59,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 598 transitions, 13335 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-02-05 10:30:59,559 INFO L231 Difference]: Finished difference. Result has 420 places, 491 transitions, 11060 flow [2024-02-05 10:30:59,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=11133, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=435, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11060, PETRI_PLACES=420, PETRI_TRANSITIONS=491} [2024-02-05 10:30:59,560 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 343 predicate places. [2024-02-05 10:30:59,560 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 491 transitions, 11060 flow [2024-02-05 10:30:59,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:59,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:30:59,561 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] [2024-02-05 10:30:59,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-02-05 10:30:59,561 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:30:59,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:30:59,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1496067430, now seen corresponding path program 7 times [2024-02-05 10:30:59,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:30:59,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961125721] [2024-02-05 10:30:59,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:30:59,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:30:59,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:30:59,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:30:59,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:30:59,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961125721] [2024-02-05 10:30:59,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961125721] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:30:59,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:30:59,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-05 10:30:59,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949642169] [2024-02-05 10:30:59,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:30:59,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-05 10:30:59,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:30:59,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-05 10:30:59,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-02-05 10:30:59,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:30:59,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 491 transitions, 11060 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:30:59,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:30:59,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:30:59,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:31:01,566 INFO L124 PetriNetUnfolderBase]: 3136/6370 cut-off events. [2024-02-05 10:31:01,567 INFO L125 PetriNetUnfolderBase]: For 179402/180406 co-relation queries the response was YES. [2024-02-05 10:31:01,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48063 conditions, 6370 events. 3136/6370 cut-off events. For 179402/180406 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 51332 event pairs, 828 based on Foata normal form. 80/6314 useless extension candidates. Maximal degree in co-relation 47956. Up to 2639 conditions per place. [2024-02-05 10:31:01,641 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 466 selfloop transitions, 95 changer transitions 10/600 dead transitions. [2024-02-05 10:31:01,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 600 transitions, 13372 flow [2024-02-05 10:31:01,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-02-05 10:31:01,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-02-05 10:31:01,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 406 transitions. [2024-02-05 10:31:01,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42781875658587987 [2024-02-05 10:31:01,643 INFO L175 Difference]: Start difference. First operand has 420 places, 491 transitions, 11060 flow. Second operand 13 states and 406 transitions. [2024-02-05 10:31:01,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 600 transitions, 13372 flow [2024-02-05 10:31:02,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 600 transitions, 13178 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-02-05 10:31:02,289 INFO L231 Difference]: Finished difference. Result has 423 places, 483 transitions, 10941 flow [2024-02-05 10:31:02,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10866, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=10941, PETRI_PLACES=423, PETRI_TRANSITIONS=483} [2024-02-05 10:31:02,289 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 346 predicate places. [2024-02-05 10:31:02,289 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 483 transitions, 10941 flow [2024-02-05 10:31:02,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:02,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:31:02,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:31:02,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-02-05 10:31:02,290 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:31:02,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:31:02,290 INFO L85 PathProgramCache]: Analyzing trace with hash -774949568, now seen corresponding path program 8 times [2024-02-05 10:31:02,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:31:02,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633331112] [2024-02-05 10:31:02,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:31:02,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:31:02,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:31:02,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:31:02,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:31:02,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633331112] [2024-02-05 10:31:02,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633331112] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:31:02,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:31:02,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-05 10:31:02,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069975727] [2024-02-05 10:31:02,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:31:02,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-05 10:31:02,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:31:02,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-05 10:31:02,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-02-05 10:31:02,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:31:02,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 483 transitions, 10941 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:02,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:31:02,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:31:02,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:31:04,088 INFO L124 PetriNetUnfolderBase]: 3093/6274 cut-off events. [2024-02-05 10:31:04,088 INFO L125 PetriNetUnfolderBase]: For 173749/174734 co-relation queries the response was YES. [2024-02-05 10:31:04,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47319 conditions, 6274 events. 3093/6274 cut-off events. For 173749/174734 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 50393 event pairs, 994 based on Foata normal form. 65/6196 useless extension candidates. Maximal degree in co-relation 47211. Up to 4438 conditions per place. [2024-02-05 10:31:04,297 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 457 selfloop transitions, 65 changer transitions 20/571 dead transitions. [2024-02-05 10:31:04,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 571 transitions, 12921 flow [2024-02-05 10:31:04,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-05 10:31:04,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-05 10:31:04,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 344 transitions. [2024-02-05 10:31:04,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42839352428393523 [2024-02-05 10:31:04,299 INFO L175 Difference]: Start difference. First operand has 423 places, 483 transitions, 10941 flow. Second operand 11 states and 344 transitions. [2024-02-05 10:31:04,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 571 transitions, 12921 flow [2024-02-05 10:31:04,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 571 transitions, 12734 flow, removed 0 selfloop flow, removed 13 redundant places. [2024-02-05 10:31:04,817 INFO L231 Difference]: Finished difference. Result has 421 places, 466 transitions, 10553 flow [2024-02-05 10:31:04,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10754, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10553, PETRI_PLACES=421, PETRI_TRANSITIONS=466} [2024-02-05 10:31:04,818 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 344 predicate places. [2024-02-05 10:31:04,818 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 466 transitions, 10553 flow [2024-02-05 10:31:04,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:04,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:31:04,818 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] [2024-02-05 10:31:04,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-02-05 10:31:04,818 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:31:04,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:31:04,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1988617872, now seen corresponding path program 9 times [2024-02-05 10:31:04,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:31:04,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392068907] [2024-02-05 10:31:04,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:31:04,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:31:04,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:31:05,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:31:05,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:31:05,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392068907] [2024-02-05 10:31:05,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392068907] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:31:05,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:31:05,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-05 10:31:05,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063822575] [2024-02-05 10:31:05,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:31:05,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-05 10:31:05,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:31:05,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-05 10:31:05,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-02-05 10:31:05,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:31:05,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 466 transitions, 10553 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:05,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:31:05,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:31:05,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:31:06,635 INFO L124 PetriNetUnfolderBase]: 3042/6169 cut-off events. [2024-02-05 10:31:06,635 INFO L125 PetriNetUnfolderBase]: For 166266/167235 co-relation queries the response was YES. [2024-02-05 10:31:06,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46534 conditions, 6169 events. 3042/6169 cut-off events. For 166266/167235 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 49201 event pairs, 809 based on Foata normal form. 70/6103 useless extension candidates. Maximal degree in co-relation 46425. Up to 2643 conditions per place. [2024-02-05 10:31:06,720 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 396 selfloop transitions, 122 changer transitions 8/555 dead transitions. [2024-02-05 10:31:06,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 555 transitions, 12510 flow [2024-02-05 10:31:06,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-05 10:31:06,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-05 10:31:06,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 369 transitions. [2024-02-05 10:31:06,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4212328767123288 [2024-02-05 10:31:06,722 INFO L175 Difference]: Start difference. First operand has 421 places, 466 transitions, 10553 flow. Second operand 12 states and 369 transitions. [2024-02-05 10:31:06,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 555 transitions, 12510 flow [2024-02-05 10:31:07,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 555 transitions, 12378 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-02-05 10:31:07,333 INFO L231 Difference]: Finished difference. Result has 423 places, 459 transitions, 10552 flow [2024-02-05 10:31:07,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10421, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10552, PETRI_PLACES=423, PETRI_TRANSITIONS=459} [2024-02-05 10:31:07,333 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 346 predicate places. [2024-02-05 10:31:07,333 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 459 transitions, 10552 flow [2024-02-05 10:31:07,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:07,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:31:07,334 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] [2024-02-05 10:31:07,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-02-05 10:31:07,334 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:31:07,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:31:07,334 INFO L85 PathProgramCache]: Analyzing trace with hash -966709928, now seen corresponding path program 10 times [2024-02-05 10:31:07,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:31:07,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997296221] [2024-02-05 10:31:07,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:31:07,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:31:07,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:31:07,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:31:07,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:31:07,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997296221] [2024-02-05 10:31:07,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997296221] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:31:07,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:31:07,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-05 10:31:07,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162685357] [2024-02-05 10:31:07,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:31:07,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-05 10:31:07,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:31:07,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-05 10:31:07,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-02-05 10:31:07,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:31:07,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 459 transitions, 10552 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:07,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:31:07,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:31:07,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:31:09,248 INFO L124 PetriNetUnfolderBase]: 3016/6109 cut-off events. [2024-02-05 10:31:09,249 INFO L125 PetriNetUnfolderBase]: For 169398/170364 co-relation queries the response was YES. [2024-02-05 10:31:09,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46312 conditions, 6109 events. 3016/6109 cut-off events. For 169398/170364 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 48656 event pairs, 970 based on Foata normal form. 56/6022 useless extension candidates. Maximal degree in co-relation 46202. Up to 4393 conditions per place. [2024-02-05 10:31:09,318 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 447 selfloop transitions, 49 changer transitions 26/551 dead transitions. [2024-02-05 10:31:09,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 551 transitions, 12482 flow [2024-02-05 10:31:09,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-05 10:31:09,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-05 10:31:09,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 367 transitions. [2024-02-05 10:31:09,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4189497716894977 [2024-02-05 10:31:09,320 INFO L175 Difference]: Start difference. First operand has 423 places, 459 transitions, 10552 flow. Second operand 12 states and 367 transitions. [2024-02-05 10:31:09,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 551 transitions, 12482 flow [2024-02-05 10:31:09,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 551 transitions, 12275 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-02-05 10:31:09,862 INFO L231 Difference]: Finished difference. Result has 423 places, 437 transitions, 10022 flow [2024-02-05 10:31:09,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10345, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10022, PETRI_PLACES=423, PETRI_TRANSITIONS=437} [2024-02-05 10:31:09,863 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 346 predicate places. [2024-02-05 10:31:09,863 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 437 transitions, 10022 flow [2024-02-05 10:31:09,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:09,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:31:09,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:31:09,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-02-05 10:31:09,863 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:31:09,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:31:09,864 INFO L85 PathProgramCache]: Analyzing trace with hash -2059524480, now seen corresponding path program 11 times [2024-02-05 10:31:09,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:31:09,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376741374] [2024-02-05 10:31:09,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:31:09,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:31:09,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:31:10,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:31:10,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:31:10,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376741374] [2024-02-05 10:31:10,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376741374] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:31:10,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:31:10,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-05 10:31:10,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300109324] [2024-02-05 10:31:10,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:31:10,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-05 10:31:10,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:31:10,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-05 10:31:10,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-02-05 10:31:10,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:31:10,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 437 transitions, 10022 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:10,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:31:10,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:31:10,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:31:11,592 INFO L124 PetriNetUnfolderBase]: 2924/5954 cut-off events. [2024-02-05 10:31:11,592 INFO L125 PetriNetUnfolderBase]: For 158686/159650 co-relation queries the response was YES. [2024-02-05 10:31:11,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45083 conditions, 5954 events. 2924/5954 cut-off events. For 158686/159650 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 47118 event pairs, 841 based on Foata normal form. 89/5925 useless extension candidates. Maximal degree in co-relation 44972. Up to 1958 conditions per place. [2024-02-05 10:31:11,669 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 349 selfloop transitions, 108 changer transitions 13/497 dead transitions. [2024-02-05 10:31:11,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 497 transitions, 11620 flow [2024-02-05 10:31:11,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-05 10:31:11,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-05 10:31:11,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 292 transitions. [2024-02-05 10:31:11,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-02-05 10:31:11,670 INFO L175 Difference]: Start difference. First operand has 423 places, 437 transitions, 10022 flow. Second operand 9 states and 292 transitions. [2024-02-05 10:31:11,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 497 transitions, 11620 flow [2024-02-05 10:31:12,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 497 transitions, 11519 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-02-05 10:31:12,303 INFO L231 Difference]: Finished difference. Result has 421 places, 425 transitions, 9932 flow [2024-02-05 10:31:12,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9921, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9932, PETRI_PLACES=421, PETRI_TRANSITIONS=425} [2024-02-05 10:31:12,304 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 344 predicate places. [2024-02-05 10:31:12,304 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 425 transitions, 9932 flow [2024-02-05 10:31:12,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:12,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:31:12,304 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] [2024-02-05 10:31:12,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-02-05 10:31:12,305 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:31:12,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:31:12,305 INFO L85 PathProgramCache]: Analyzing trace with hash -255855452, now seen corresponding path program 12 times [2024-02-05 10:31:12,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:31:12,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245952985] [2024-02-05 10:31:12,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:31:12,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:31:12,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:31:12,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:31:12,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:31:12,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245952985] [2024-02-05 10:31:12,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245952985] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:31:12,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:31:12,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-05 10:31:12,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136549873] [2024-02-05 10:31:12,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:31:12,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-05 10:31:12,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:31:12,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-05 10:31:12,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-02-05 10:31:12,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:31:12,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 425 transitions, 9932 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:12,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:31:12,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:31:12,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:31:14,019 INFO L124 PetriNetUnfolderBase]: 2847/5823 cut-off events. [2024-02-05 10:31:14,019 INFO L125 PetriNetUnfolderBase]: For 160921/161860 co-relation queries the response was YES. [2024-02-05 10:31:14,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44280 conditions, 5823 events. 2847/5823 cut-off events. For 160921/161860 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 46014 event pairs, 830 based on Foata normal form. 74/5788 useless extension candidates. Maximal degree in co-relation 44168. Up to 1958 conditions per place. [2024-02-05 10:31:14,080 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 347 selfloop transitions, 92 changer transitions 20/485 dead transitions. [2024-02-05 10:31:14,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 485 transitions, 11440 flow [2024-02-05 10:31:14,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-05 10:31:14,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-05 10:31:14,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 316 transitions. [2024-02-05 10:31:14,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4328767123287671 [2024-02-05 10:31:14,082 INFO L175 Difference]: Start difference. First operand has 421 places, 425 transitions, 9932 flow. Second operand 10 states and 316 transitions. [2024-02-05 10:31:14,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 485 transitions, 11440 flow [2024-02-05 10:31:14,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 485 transitions, 11031 flow, removed 16 selfloop flow, removed 13 redundant places. [2024-02-05 10:31:14,667 INFO L231 Difference]: Finished difference. Result has 418 places, 406 transitions, 9423 flow [2024-02-05 10:31:14,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9539, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9423, PETRI_PLACES=418, PETRI_TRANSITIONS=406} [2024-02-05 10:31:14,667 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 341 predicate places. [2024-02-05 10:31:14,667 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 406 transitions, 9423 flow [2024-02-05 10:31:14,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:14,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:31:14,668 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] [2024-02-05 10:31:14,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-02-05 10:31:14,668 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:31:14,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:31:14,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1783134488, now seen corresponding path program 13 times [2024-02-05 10:31:14,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:31:14,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688534304] [2024-02-05 10:31:14,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:31:14,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:31:14,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:31:14,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:31:14,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:31:14,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688534304] [2024-02-05 10:31:14,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688534304] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:31:14,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:31:14,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-05 10:31:14,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582389583] [2024-02-05 10:31:14,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:31:14,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-05 10:31:14,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:31:14,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-05 10:31:14,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-02-05 10:31:15,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:31:15,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 406 transitions, 9423 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:15,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:31:15,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:31:15,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:31:16,305 INFO L124 PetriNetUnfolderBase]: 2755/5652 cut-off events. [2024-02-05 10:31:16,305 INFO L125 PetriNetUnfolderBase]: For 141926/142832 co-relation queries the response was YES. [2024-02-05 10:31:16,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42320 conditions, 5652 events. 2755/5652 cut-off events. For 141926/142832 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 44429 event pairs, 810 based on Foata normal form. 57/5593 useless extension candidates. Maximal degree in co-relation 42212. Up to 1958 conditions per place. [2024-02-05 10:31:16,370 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 301 selfloop transitions, 104 changer transitions 23/454 dead transitions. [2024-02-05 10:31:16,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 454 transitions, 10652 flow [2024-02-05 10:31:16,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-05 10:31:16,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-05 10:31:16,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 287 transitions. [2024-02-05 10:31:16,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4368340943683409 [2024-02-05 10:31:16,372 INFO L175 Difference]: Start difference. First operand has 418 places, 406 transitions, 9423 flow. Second operand 9 states and 287 transitions. [2024-02-05 10:31:16,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 454 transitions, 10652 flow [2024-02-05 10:31:16,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 454 transitions, 10093 flow, removed 13 selfloop flow, removed 20 redundant places. [2024-02-05 10:31:16,865 INFO L231 Difference]: Finished difference. Result has 407 places, 383 transitions, 8723 flow [2024-02-05 10:31:16,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8872, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8723, PETRI_PLACES=407, PETRI_TRANSITIONS=383} [2024-02-05 10:31:16,865 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 330 predicate places. [2024-02-05 10:31:16,865 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 383 transitions, 8723 flow [2024-02-05 10:31:16,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:16,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:31:16,866 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] [2024-02-05 10:31:16,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-02-05 10:31:16,866 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:31:16,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:31:16,866 INFO L85 PathProgramCache]: Analyzing trace with hash -459069398, now seen corresponding path program 14 times [2024-02-05 10:31:16,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:31:16,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777537228] [2024-02-05 10:31:16,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:31:16,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:31:16,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:31:17,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:31:17,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:31:17,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777537228] [2024-02-05 10:31:17,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777537228] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:31:17,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:31:17,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-05 10:31:17,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329232436] [2024-02-05 10:31:17,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:31:17,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-05 10:31:17,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:31:17,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-05 10:31:17,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-02-05 10:31:17,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:31:17,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 383 transitions, 8723 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:17,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:31:17,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:31:17,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:31:18,458 INFO L124 PetriNetUnfolderBase]: 2726/5629 cut-off events. [2024-02-05 10:31:18,459 INFO L125 PetriNetUnfolderBase]: For 121077/121974 co-relation queries the response was YES. [2024-02-05 10:31:18,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41402 conditions, 5629 events. 2726/5629 cut-off events. For 121077/121974 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 44579 event pairs, 642 based on Foata normal form. 64/5575 useless extension candidates. Maximal degree in co-relation 41299. Up to 2756 conditions per place. [2024-02-05 10:31:18,523 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 323 selfloop transitions, 100 changer transitions 6/455 dead transitions. [2024-02-05 10:31:18,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 455 transitions, 10298 flow [2024-02-05 10:31:18,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-05 10:31:18,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-05 10:31:18,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 324 transitions. [2024-02-05 10:31:18,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4438356164383562 [2024-02-05 10:31:18,524 INFO L175 Difference]: Start difference. First operand has 407 places, 383 transitions, 8723 flow. Second operand 10 states and 324 transitions. [2024-02-05 10:31:18,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 455 transitions, 10298 flow [2024-02-05 10:31:18,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 455 transitions, 9802 flow, removed 16 selfloop flow, removed 21 redundant places. [2024-02-05 10:31:18,967 INFO L231 Difference]: Finished difference. Result has 396 places, 379 transitions, 8388 flow [2024-02-05 10:31:18,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8245, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8388, PETRI_PLACES=396, PETRI_TRANSITIONS=379} [2024-02-05 10:31:18,980 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 319 predicate places. [2024-02-05 10:31:18,981 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 379 transitions, 8388 flow [2024-02-05 10:31:18,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:18,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:31:18,981 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] [2024-02-05 10:31:18,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-02-05 10:31:18,981 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:31:18,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:31:18,982 INFO L85 PathProgramCache]: Analyzing trace with hash 517959024, now seen corresponding path program 15 times [2024-02-05 10:31:18,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:31:18,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854990524] [2024-02-05 10:31:18,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:31:18,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:31:18,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:31:19,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:31:19,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:31:19,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854990524] [2024-02-05 10:31:19,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854990524] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:31:19,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:31:19,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-05 10:31:19,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171329330] [2024-02-05 10:31:19,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:31:19,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-05 10:31:19,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:31:19,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-05 10:31:19,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-02-05 10:31:19,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:31:19,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 379 transitions, 8388 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:19,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:31:19,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:31:19,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:31:20,614 INFO L124 PetriNetUnfolderBase]: 2684/5570 cut-off events. [2024-02-05 10:31:20,614 INFO L125 PetriNetUnfolderBase]: For 108607/109428 co-relation queries the response was YES. [2024-02-05 10:31:20,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40284 conditions, 5570 events. 2684/5570 cut-off events. For 108607/109428 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 44032 event pairs, 549 based on Foata normal form. 64/5519 useless extension candidates. Maximal degree in co-relation 40185. Up to 2402 conditions per place. [2024-02-05 10:31:20,693 INFO L140 encePairwiseOnDemand]: 57/73 looper letters, 282 selfloop transitions, 126 changer transitions 6/440 dead transitions. [2024-02-05 10:31:20,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 440 transitions, 9733 flow [2024-02-05 10:31:20,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-05 10:31:20,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-05 10:31:20,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 346 transitions. [2024-02-05 10:31:20,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43088418430884184 [2024-02-05 10:31:20,695 INFO L175 Difference]: Start difference. First operand has 396 places, 379 transitions, 8388 flow. Second operand 11 states and 346 transitions. [2024-02-05 10:31:20,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 440 transitions, 9733 flow [2024-02-05 10:31:21,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 440 transitions, 9515 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-02-05 10:31:21,167 INFO L231 Difference]: Finished difference. Result has 399 places, 375 transitions, 8411 flow [2024-02-05 10:31:21,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8170, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8411, PETRI_PLACES=399, PETRI_TRANSITIONS=375} [2024-02-05 10:31:21,167 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 322 predicate places. [2024-02-05 10:31:21,168 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 375 transitions, 8411 flow [2024-02-05 10:31:21,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:21,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:31:21,168 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] [2024-02-05 10:31:21,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-02-05 10:31:21,168 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:31:21,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:31:21,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1725096586, now seen corresponding path program 16 times [2024-02-05 10:31:21,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:31:21,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591188743] [2024-02-05 10:31:21,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:31:21,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:31:21,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:31:21,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:31:21,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:31:21,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591188743] [2024-02-05 10:31:21,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591188743] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:31:21,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:31:21,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-05 10:31:21,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48377121] [2024-02-05 10:31:21,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:31:21,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-05 10:31:21,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:31:21,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-05 10:31:21,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-02-05 10:31:21,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:31:21,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 375 transitions, 8411 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:21,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:31:21,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:31:21,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:31:23,150 INFO L124 PetriNetUnfolderBase]: 2656/5535 cut-off events. [2024-02-05 10:31:23,151 INFO L125 PetriNetUnfolderBase]: For 107327/108155 co-relation queries the response was YES. [2024-02-05 10:31:23,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41017 conditions, 5535 events. 2656/5535 cut-off events. For 107327/108155 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 43851 event pairs, 621 based on Foata normal form. 62/5477 useless extension candidates. Maximal degree in co-relation 40917. Up to 2786 conditions per place. [2024-02-05 10:31:23,212 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 324 selfloop transitions, 97 changer transitions 9/456 dead transitions. [2024-02-05 10:31:23,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 456 transitions, 10053 flow [2024-02-05 10:31:23,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-05 10:31:23,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-05 10:31:23,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 382 transitions. [2024-02-05 10:31:23,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4360730593607306 [2024-02-05 10:31:23,213 INFO L175 Difference]: Start difference. First operand has 399 places, 375 transitions, 8411 flow. Second operand 12 states and 382 transitions. [2024-02-05 10:31:23,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 456 transitions, 10053 flow [2024-02-05 10:31:23,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 456 transitions, 9637 flow, removed 13 selfloop flow, removed 13 redundant places. [2024-02-05 10:31:23,610 INFO L231 Difference]: Finished difference. Result has 398 places, 368 transitions, 8118 flow [2024-02-05 10:31:23,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8014, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8118, PETRI_PLACES=398, PETRI_TRANSITIONS=368} [2024-02-05 10:31:23,611 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 321 predicate places. [2024-02-05 10:31:23,611 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 368 transitions, 8118 flow [2024-02-05 10:31:23,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:23,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:31:23,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:31:23,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-02-05 10:31:23,612 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:31:23,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:31:23,612 INFO L85 PathProgramCache]: Analyzing trace with hash -529612934, now seen corresponding path program 17 times [2024-02-05 10:31:23,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:31:23,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465028167] [2024-02-05 10:31:23,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:31:23,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:31:23,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:31:23,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:31:23,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:31:23,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465028167] [2024-02-05 10:31:23,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465028167] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:31:23,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:31:23,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-05 10:31:23,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399763307] [2024-02-05 10:31:23,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:31:23,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-05 10:31:23,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:31:23,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-05 10:31:23,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-02-05 10:31:23,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:31:23,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 368 transitions, 8118 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:23,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:31:23,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:31:23,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:31:25,380 INFO L124 PetriNetUnfolderBase]: 2640/5518 cut-off events. [2024-02-05 10:31:25,380 INFO L125 PetriNetUnfolderBase]: For 97248/98024 co-relation queries the response was YES. [2024-02-05 10:31:25,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40483 conditions, 5518 events. 2640/5518 cut-off events. For 97248/98024 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 43679 event pairs, 544 based on Foata normal form. 58/5459 useless extension candidates. Maximal degree in co-relation 40385. Up to 2402 conditions per place. [2024-02-05 10:31:25,446 INFO L140 encePairwiseOnDemand]: 57/73 looper letters, 281 selfloop transitions, 121 changer transitions 10/438 dead transitions. [2024-02-05 10:31:25,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 438 transitions, 9527 flow [2024-02-05 10:31:25,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-02-05 10:31:25,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-02-05 10:31:25,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 404 transitions. [2024-02-05 10:31:25,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42571127502634354 [2024-02-05 10:31:25,448 INFO L175 Difference]: Start difference. First operand has 398 places, 368 transitions, 8118 flow. Second operand 13 states and 404 transitions. [2024-02-05 10:31:25,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 438 transitions, 9527 flow [2024-02-05 10:31:25,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 438 transitions, 9307 flow, removed 2 selfloop flow, removed 13 redundant places. [2024-02-05 10:31:25,846 INFO L231 Difference]: Finished difference. Result has 398 places, 359 transitions, 8037 flow [2024-02-05 10:31:25,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7900, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8037, PETRI_PLACES=398, PETRI_TRANSITIONS=359} [2024-02-05 10:31:25,847 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 321 predicate places. [2024-02-05 10:31:25,847 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 359 transitions, 8037 flow [2024-02-05 10:31:25,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:25,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:31:25,847 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] [2024-02-05 10:31:25,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-02-05 10:31:25,848 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:31:25,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:31:25,848 INFO L85 PathProgramCache]: Analyzing trace with hash 379738064, now seen corresponding path program 18 times [2024-02-05 10:31:25,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:31:25,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106170221] [2024-02-05 10:31:25,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:31:25,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:31:25,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:31:26,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:31:26,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:31:26,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106170221] [2024-02-05 10:31:26,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106170221] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:31:26,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:31:26,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-05 10:31:26,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210594909] [2024-02-05 10:31:26,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:31:26,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-05 10:31:26,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:31:26,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-05 10:31:26,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-02-05 10:31:26,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:31:26,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 359 transitions, 8037 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:26,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:31:26,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:31:26,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:31:27,537 INFO L124 PetriNetUnfolderBase]: 2614/5461 cut-off events. [2024-02-05 10:31:27,538 INFO L125 PetriNetUnfolderBase]: For 92630/93434 co-relation queries the response was YES. [2024-02-05 10:31:27,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40475 conditions, 5461 events. 2614/5461 cut-off events. For 92630/93434 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 43109 event pairs, 633 based on Foata normal form. 48/5389 useless extension candidates. Maximal degree in co-relation 40377. Up to 2548 conditions per place. [2024-02-05 10:31:27,590 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 248 selfloop transitions, 138 changer transitions 11/423 dead transitions. [2024-02-05 10:31:27,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 423 transitions, 9374 flow [2024-02-05 10:31:27,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-05 10:31:27,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-05 10:31:27,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 344 transitions. [2024-02-05 10:31:27,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42839352428393523 [2024-02-05 10:31:27,591 INFO L175 Difference]: Start difference. First operand has 398 places, 359 transitions, 8037 flow. Second operand 11 states and 344 transitions. [2024-02-05 10:31:27,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 423 transitions, 9374 flow [2024-02-05 10:31:27,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 423 transitions, 8941 flow, removed 8 selfloop flow, removed 22 redundant places. [2024-02-05 10:31:27,935 INFO L231 Difference]: Finished difference. Result has 387 places, 349 transitions, 7738 flow [2024-02-05 10:31:27,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7614, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7738, PETRI_PLACES=387, PETRI_TRANSITIONS=349} [2024-02-05 10:31:27,935 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 310 predicate places. [2024-02-05 10:31:27,935 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 349 transitions, 7738 flow [2024-02-05 10:31:27,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:27,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:31:27,936 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] [2024-02-05 10:31:27,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-02-05 10:31:27,936 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:31:27,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:31:27,936 INFO L85 PathProgramCache]: Analyzing trace with hash -364860486, now seen corresponding path program 19 times [2024-02-05 10:31:27,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:31:27,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828024316] [2024-02-05 10:31:27,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:31:27,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:31:27,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:31:28,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:31:28,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:31:28,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828024316] [2024-02-05 10:31:28,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828024316] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:31:28,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:31:28,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-05 10:31:28,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641106519] [2024-02-05 10:31:28,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:31:28,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-05 10:31:28,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:31:28,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-05 10:31:28,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-02-05 10:31:28,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:31:28,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 349 transitions, 7738 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:28,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:31:28,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:31:28,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:31:29,400 INFO L124 PetriNetUnfolderBase]: 2608/5506 cut-off events. [2024-02-05 10:31:29,400 INFO L125 PetriNetUnfolderBase]: For 90760/91510 co-relation queries the response was YES. [2024-02-05 10:31:29,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40495 conditions, 5506 events. 2608/5506 cut-off events. For 90760/91510 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 43695 event pairs, 549 based on Foata normal form. 54/5449 useless extension candidates. Maximal degree in co-relation 40401. Up to 2352 conditions per place. [2024-02-05 10:31:29,461 INFO L140 encePairwiseOnDemand]: 57/73 looper letters, 220 selfloop transitions, 155 changer transitions 10/411 dead transitions. [2024-02-05 10:31:29,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 411 transitions, 9000 flow [2024-02-05 10:31:29,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-05 10:31:29,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-05 10:31:29,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 374 transitions. [2024-02-05 10:31:29,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4269406392694064 [2024-02-05 10:31:29,462 INFO L175 Difference]: Start difference. First operand has 387 places, 349 transitions, 7738 flow. Second operand 12 states and 374 transitions. [2024-02-05 10:31:29,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 411 transitions, 9000 flow [2024-02-05 10:31:29,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 411 transitions, 8706 flow, removed 2 selfloop flow, removed 16 redundant places. [2024-02-05 10:31:29,801 INFO L231 Difference]: Finished difference. Result has 383 places, 340 transitions, 7616 flow [2024-02-05 10:31:29,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7446, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7616, PETRI_PLACES=383, PETRI_TRANSITIONS=340} [2024-02-05 10:31:29,802 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 306 predicate places. [2024-02-05 10:31:29,802 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 340 transitions, 7616 flow [2024-02-05 10:31:29,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:29,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:31:29,802 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] [2024-02-05 10:31:29,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-02-05 10:31:29,802 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:31:29,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:31:29,803 INFO L85 PathProgramCache]: Analyzing trace with hash -502223712, now seen corresponding path program 20 times [2024-02-05 10:31:29,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:31:29,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045236489] [2024-02-05 10:31:29,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:31:29,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:31:29,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-05 10:31:30,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-05 10:31:30,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-05 10:31:30,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045236489] [2024-02-05 10:31:30,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045236489] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-05 10:31:30,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-05 10:31:30,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-02-05 10:31:30,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710277399] [2024-02-05 10:31:30,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-05 10:31:30,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-05 10:31:30,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-05 10:31:30,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-05 10:31:30,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2024-02-05 10:31:30,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-02-05 10:31:30,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 340 transitions, 7616 flow. Second operand has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:30,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-05 10:31:30,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-02-05 10:31:30,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-05 10:31:31,260 INFO L124 PetriNetUnfolderBase]: 2587/5426 cut-off events. [2024-02-05 10:31:31,261 INFO L125 PetriNetUnfolderBase]: For 85885/86641 co-relation queries the response was YES. [2024-02-05 10:31:31,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40400 conditions, 5426 events. 2587/5426 cut-off events. For 85885/86641 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 42703 event pairs, 470 based on Foata normal form. 40/5349 useless extension candidates. Maximal degree in co-relation 40306. Up to 2264 conditions per place. [2024-02-05 10:31:31,322 INFO L140 encePairwiseOnDemand]: 57/73 looper letters, 198 selfloop transitions, 153 changer transitions 17/393 dead transitions. [2024-02-05 10:31:31,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 393 transitions, 8693 flow [2024-02-05 10:31:31,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-05 10:31:31,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-05 10:31:31,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 364 transitions. [2024-02-05 10:31:31,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4155251141552511 [2024-02-05 10:31:31,323 INFO L175 Difference]: Start difference. First operand has 383 places, 340 transitions, 7616 flow. Second operand 12 states and 364 transitions. [2024-02-05 10:31:31,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 393 transitions, 8693 flow [2024-02-05 10:31:31,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 393 transitions, 8208 flow, removed 9 selfloop flow, removed 28 redundant places. [2024-02-05 10:31:31,619 INFO L231 Difference]: Finished difference. Result has 364 places, 322 transitions, 7191 flow [2024-02-05 10:31:31,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7069, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7191, PETRI_PLACES=364, PETRI_TRANSITIONS=322} [2024-02-05 10:31:31,619 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 287 predicate places. [2024-02-05 10:31:31,619 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 322 transitions, 7191 flow [2024-02-05 10:31:31,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.636363636363637) internal successors, (249), 11 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-05 10:31:31,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-05 10:31:31,620 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, 1, 1, 1, 1, 1, 1, 1] [2024-02-05 10:31:31,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-02-05 10:31:31,620 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-02-05 10:31:31,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-05 10:31:31,620 INFO L85 PathProgramCache]: Analyzing trace with hash -773978686, now seen corresponding path program 1 times [2024-02-05 10:31:31,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-05 10:31:31,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243747838] [2024-02-05 10:31:31,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-05 10:31:31,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-05 10:31:31,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-05 10:31:31,630 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-05 10:31:31,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-05 10:31:31,702 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-05 10:31:31,706 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-05 10:31:31,707 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (59 of 60 remaining) [2024-02-05 10:31:31,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT (58 of 60 remaining) [2024-02-05 10:31:31,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT (57 of 60 remaining) [2024-02-05 10:31:31,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (56 of 60 remaining) [2024-02-05 10:31:31,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err3ASSERT_VIOLATIONWITNESS_INVARIANT (55 of 60 remaining) [2024-02-05 10:31:31,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT (54 of 60 remaining) [2024-02-05 10:31:31,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err5ASSERT_VIOLATIONWITNESS_INVARIANT (53 of 60 remaining) [2024-02-05 10:31:31,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err6ASSERT_VIOLATIONWITNESS_INVARIANT (52 of 60 remaining) [2024-02-05 10:31:31,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT (51 of 60 remaining) [2024-02-05 10:31:31,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err8ASSERT_VIOLATIONWITNESS_INVARIANT (50 of 60 remaining) [2024-02-05 10:31:31,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT (49 of 60 remaining) [2024-02-05 10:31:31,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err10ASSERT_VIOLATIONWITNESS_INVARIANT (48 of 60 remaining) [2024-02-05 10:31:31,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err11ASSERT_VIOLATIONWITNESS_INVARIANT (47 of 60 remaining) [2024-02-05 10:31:31,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (46 of 60 remaining) [2024-02-05 10:31:31,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (45 of 60 remaining) [2024-02-05 10:31:31,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (44 of 60 remaining) [2024-02-05 10:31:31,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (43 of 60 remaining) [2024-02-05 10:31:31,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (42 of 60 remaining) [2024-02-05 10:31:31,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (41 of 60 remaining) [2024-02-05 10:31:31,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (40 of 60 remaining) [2024-02-05 10:31:31,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (39 of 60 remaining) [2024-02-05 10:31:31,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 60 remaining) [2024-02-05 10:31:31,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 60 remaining) [2024-02-05 10:31:31,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 60 remaining) [2024-02-05 10:31:31,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 60 remaining) [2024-02-05 10:31:31,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 60 remaining) [2024-02-05 10:31:31,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 60 remaining) [2024-02-05 10:31:31,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 60 remaining) [2024-02-05 10:31:31,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 60 remaining) [2024-02-05 10:31:31,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 60 remaining) [2024-02-05 10:31:31,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 60 remaining) [2024-02-05 10:31:31,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 60 remaining) [2024-02-05 10:31:31,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 60 remaining) [2024-02-05 10:31:31,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (26 of 60 remaining) [2024-02-05 10:31:31,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 60 remaining) [2024-02-05 10:31:31,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 60 remaining) [2024-02-05 10:31:31,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 60 remaining) [2024-02-05 10:31:31,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 60 remaining) [2024-02-05 10:31:31,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 60 remaining) [2024-02-05 10:31:31,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err3ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 60 remaining) [2024-02-05 10:31:31,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 60 remaining) [2024-02-05 10:31:31,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err5ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 60 remaining) [2024-02-05 10:31:31,713 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err6ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 60 remaining) [2024-02-05 10:31:31,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 60 remaining) [2024-02-05 10:31:31,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err8ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 60 remaining) [2024-02-05 10:31:31,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 60 remaining) [2024-02-05 10:31:31,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err10ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 60 remaining) [2024-02-05 10:31:31,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err11ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 60 remaining) [2024-02-05 10:31:31,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 60 remaining) [2024-02-05 10:31:31,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 60 remaining) [2024-02-05 10:31:31,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 60 remaining) [2024-02-05 10:31:31,714 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 60 remaining) [2024-02-05 10:31:31,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 60 remaining) [2024-02-05 10:31:31,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 60 remaining) [2024-02-05 10:31:31,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 60 remaining) [2024-02-05 10:31:31,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 60 remaining) [2024-02-05 10:31:31,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 60 remaining) [2024-02-05 10:31:31,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 60 remaining) [2024-02-05 10:31:31,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 60 remaining) [2024-02-05 10:31:31,715 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 60 remaining) [2024-02-05 10:31:31,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-02-05 10:31:31,716 INFO L445 BasicCegarLoop]: Path program histogram: [20, 20, 10, 10, 10, 9, 8, 7, 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] [2024-02-05 10:31:31,721 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-02-05 10:31:31,732 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-02-05 10:31:31,776 INFO L503 ceAbstractionStarter]: Automizer considered 33 witness invariants [2024-02-05 10:31:31,779 INFO L504 ceAbstractionStarter]: WitnessConsidered=33 [2024-02-05 10:31:31,780 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.02 10:31:31 BasicIcfg [2024-02-05 10:31:31,780 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-02-05 10:31:31,780 INFO L158 Benchmark]: Toolchain (without parser) took 257085.40ms. Allocated memory was 190.8MB in the beginning and 3.4GB in the end (delta: 3.2GB). Free memory was 142.8MB in the beginning and 3.3GB in the end (delta: -3.2GB). Peak memory consumption was 2.0GB. Max. memory is 16.1GB. [2024-02-05 10:31:31,781 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 190.8MB. Free memory is still 160.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-05 10:31:31,781 INFO L158 Benchmark]: Witness Parser took 0.12ms. Allocated memory is still 190.8MB. Free memory is still 156.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-05 10:31:31,781 INFO L158 Benchmark]: CACSL2BoogieTranslator took 791.59ms. Allocated memory is still 190.8MB. Free memory was 142.3MB in the beginning and 74.6MB in the end (delta: 67.7MB). Peak memory consumption was 67.1MB. Max. memory is 16.1GB. [2024-02-05 10:31:31,781 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.07ms. Allocated memory is still 190.8MB. Free memory was 74.6MB in the beginning and 71.9MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-05 10:31:31,781 INFO L158 Benchmark]: Boogie Preprocessor took 79.34ms. Allocated memory is still 190.8MB. Free memory was 71.9MB in the beginning and 68.9MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-02-05 10:31:31,782 INFO L158 Benchmark]: RCFGBuilder took 684.03ms. Allocated memory is still 190.8MB. Free memory was 68.9MB in the beginning and 87.9MB in the end (delta: -19.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-02-05 10:31:31,782 INFO L158 Benchmark]: TraceAbstraction took 255457.10ms. Allocated memory was 190.8MB in the beginning and 3.4GB in the end (delta: 3.2GB). Free memory was 86.8MB in the beginning and 3.3GB in the end (delta: -3.2GB). Peak memory consumption was 1.9GB. Max. memory is 16.1GB. [2024-02-05 10:31:31,782 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 190.8MB. Free memory is still 160.4MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.12ms. Allocated memory is still 190.8MB. Free memory is still 156.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 791.59ms. Allocated memory is still 190.8MB. Free memory was 142.3MB in the beginning and 74.6MB in the end (delta: 67.7MB). Peak memory consumption was 67.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.07ms. Allocated memory is still 190.8MB. Free memory was 74.6MB in the beginning and 71.9MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 79.34ms. Allocated memory is still 190.8MB. Free memory was 71.9MB in the beginning and 68.9MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 684.03ms. Allocated memory is still 190.8MB. Free memory was 68.9MB in the beginning and 87.9MB in the end (delta: -19.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 255457.10ms. Allocated memory was 190.8MB in the beginning and 3.4GB in the end (delta: 3.2GB). Free memory was 86.8MB in the beginning and 3.3GB in the end (delta: -3.2GB). Peak memory consumption was 1.9GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 771]: invariant of correctness witness can be violated invariant of correctness witness can be violated We found a FailurePath: [L708] 0 int __unbuffered_cnt = 0; [L710] 0 int __unbuffered_p0_EAX = 0; [L712] 0 int __unbuffered_p1_EAX = 0; [L713] 0 _Bool main$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$tmp_guard1=0, t1925={5:0}, x=0, y=0] [L762] 0 pthread_t t1926; [L763] FCALL, FORK 0 pthread_create(&t1926, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t1925={5:0}, t1926={3:0}, x=0, y=0] [L721] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0] [L722] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p0_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p0_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] [L722] 1 __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$tmp_guard1=0, x=1, y=0] [L736] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=0] [L729] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$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 invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 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, 121 locations, 60 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: 255.3s, OverallIterations: 170, TraceHistogramMax: 1, PathProgramHistogramMax: 20, EmptinessCheckTime: 0.0s, AutomataDifference: 215.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14785 SdHoareTripleChecker+Valid, 32.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13422 mSDsluCounter, 3541 SdHoareTripleChecker+Invalid, 27.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3045 mSDsCounter, 2384 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 49772 IncrementalHoareTripleChecker+Invalid, 52156 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2384 mSolverCounterUnsat, 496 mSDtfsCounter, 49772 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1547 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1540 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1680 ImplicationChecksByTransitivity, 17.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14371occurred in iteration=147, InterpolantAutomatonStates: 1492, 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, 37.8s InterpolantComputationTime, 3207 NumberOfCodeBlocks, 3207 NumberOfCodeBlocksAsserted, 170 NumberOfCheckSat, 3010 ConstructedInterpolants, 0 QuantifiedInterpolants, 77654 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 169 InterpolantComputations, 169 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! [2024-02-05 10:31:31,825 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE