./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe029_tso.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/safe029_tso.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fced0e87 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe029_tso.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/safe029_tso.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.extract-columns-fced0e8-m [2024-01-31 16:04:10,172 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 16:04:10,226 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 16:04:10,233 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 16:04:10,233 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 16:04:10,259 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 16:04:10,260 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 16:04:10,260 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 16:04:10,260 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 16:04:10,261 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 16:04:10,261 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 16:04:10,261 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 16:04:10,262 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 16:04:10,266 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 16:04:10,267 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 16:04:10,267 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 16:04:10,268 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 16:04:10,268 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 16:04:10,268 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 16:04:10,268 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 16:04:10,269 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 16:04:10,269 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 16:04:10,269 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 16:04:10,270 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 16:04:10,270 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 16:04:10,270 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 16:04:10,270 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 16:04:10,270 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 16:04:10,270 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 16:04:10,270 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 16:04:10,270 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 16:04:10,271 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 16:04:10,271 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:04:10,271 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 16:04:10,271 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 16:04:10,271 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 16:04:10,271 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 16:04:10,271 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 16:04:10,272 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 16:04:10,272 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 16:04:10,272 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 16:04:10,272 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 16:04:10,272 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 16:04:10,272 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 16:04:10,507 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 16:04:10,540 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 16:04:10,543 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 16:04:10,544 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 16:04:10,545 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 16:04:10,547 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe029_tso.i [2024-01-31 16:04:11,737 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 16:04:12,005 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 16:04:12,006 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe029_tso.i [2024-01-31 16:04:12,035 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cedc726e/16df130d2cb0471f86408dbbc41e5f1e/FLAGcdececf36 [2024-01-31 16:04:12,047 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6cedc726e/16df130d2cb0471f86408dbbc41e5f1e [2024-01-31 16:04:12,049 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 16:04:12,050 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 16:04:12,050 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/safe029_tso.yml/witness.yml [2024-01-31 16:04:12,289 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 16:04:12,290 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 16:04:12,292 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 16:04:12,292 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 16:04:12,297 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 16:04:12,298 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:04:12" (1/2) ... [2024-01-31 16:04:12,300 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3becc65f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:04:12, skipping insertion in model container [2024-01-31 16:04:12,300 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:04:12" (1/2) ... [2024-01-31 16:04:12,301 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4e01911f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:04:12, skipping insertion in model container [2024-01-31 16:04:12,301 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:04:12" (2/2) ... [2024-01-31 16:04:12,302 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3becc65f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:04:12, skipping insertion in model container [2024-01-31 16:04:12,302 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:04:12" (2/2) ... [2024-01-31 16:04:12,302 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 16:04:12,520 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 16:04:12,522 INFO L98 nessWitnessExtractor]: Location invariant after [L18-L18] expression == 1 [2024-01-31 16:04:12,523 INFO L98 nessWitnessExtractor]: Location invariant before [L739-L739] (((((((((((0 <= __unbuffered_cnt) && (0 <= x)) && (0 <= y)) && (x <= 2)) && (x <= 127)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2) [2024-01-31 16:04:12,523 INFO L98 nessWitnessExtractor]: Location invariant before [L767-L767] (((((((0 <= __unbuffered_cnt) && (0 <= y)) && (y <= 2)) && (y <= 127)) && (x == 2)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && ((y == 0 || y == 1) || y == 2) [2024-01-31 16:04:12,523 INFO L98 nessWitnessExtractor]: Location invariant before [L761-L761] ((((((((((0 <= __unbuffered_cnt) && (0 <= x)) && (0 <= y)) && (x <= 2)) && (x <= 127)) && (y <= 2)) && (y <= 127)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2) [2024-01-31 16:04:12,523 INFO L98 nessWitnessExtractor]: Location invariant after [L18-L18] expression == 1 [2024-01-31 16:04:12,524 INFO L98 nessWitnessExtractor]: Location invariant before [L735-L735] (unsigned long )arg == 0UL [2024-01-31 16:04:12,524 INFO L98 nessWitnessExtractor]: Location invariant before [L18-L18] expression == 1 [2024-01-31 16:04:12,525 INFO L98 nessWitnessExtractor]: Location invariant before [L757-L757] ((((__unbuffered_cnt == 0) && (main$tmp_guard0 == (_Bool)0)) && (main$tmp_guard1 == (_Bool)0)) && (x == 0)) && (y == 0) [2024-01-31 16:04:12,525 INFO L98 nessWitnessExtractor]: Location invariant before [L722-L722] ((((((((0 <= __unbuffered_cnt) && (0 <= y)) && (y <= 2)) && (y <= 127)) && (x == 1)) && ((unsigned long )arg == 0UL)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && ((y == 0 || y == 1) || y == 2) [2024-01-31 16:04:12,525 INFO L98 nessWitnessExtractor]: Location invariant before [L719-L719] ((((((((0 <= __unbuffered_cnt) && (0 <= x)) && (x <= 2)) && (x <= 127)) && (y == 2)) && ((unsigned long )arg == 0UL)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && ((x == 0 || x == 1) || x == 2) [2024-01-31 16:04:12,525 INFO L98 nessWitnessExtractor]: Location invariant before [L738-L738] (unsigned long )arg == 0UL [2024-01-31 16:04:12,525 INFO L98 nessWitnessExtractor]: Location invariant before [L740-L740] (unsigned long )arg == 0UL [2024-01-31 16:04:12,526 INFO L98 nessWitnessExtractor]: Location invariant before [L727-L727] (((((((((((0 <= x) && (0 <= y)) && (1 <= __unbuffered_cnt)) && (x <= 2)) && (x <= 127)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2) [2024-01-31 16:04:12,526 INFO L98 nessWitnessExtractor]: Location invariant before [L741-L741] (((((((((((0 <= __unbuffered_cnt) && (0 <= x)) && (0 <= y)) && (x <= 2)) && (x <= 127)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2) [2024-01-31 16:04:12,526 INFO L98 nessWitnessExtractor]: Location invariant before [L718-L718] (((((((((((0 <= __unbuffered_cnt) && (0 <= x)) && (0 <= y)) && (x <= 2)) && (x <= 127)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2) [2024-01-31 16:04:12,526 INFO L98 nessWitnessExtractor]: Location invariant before [L768-L768] ((((((((((0 <= __unbuffered_cnt) && (0 <= x)) && (0 <= y)) && (x <= 2)) && (x <= 127)) && (y <= 2)) && (y <= 127)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2) [2024-01-31 16:04:12,526 INFO L98 nessWitnessExtractor]: Location invariant before [L742-L742] (((((((((((0 <= x) && (0 <= y)) && (1 <= __unbuffered_cnt)) && (x <= 2)) && (x <= 127)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2) [2024-01-31 16:04:12,526 INFO L98 nessWitnessExtractor]: Location invariant before [L717-L717] (unsigned long )arg == 0UL [2024-01-31 16:04:12,527 INFO L98 nessWitnessExtractor]: Location invariant before [L734-L734] ((((((((0 <= __unbuffered_cnt) && (0 <= y)) && (y <= 2)) && (y <= 127)) && (x == 2)) && ((unsigned long )arg == 0UL)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && ((y == 0 || y == 1) || y == 2) [2024-01-31 16:04:12,527 INFO L98 nessWitnessExtractor]: Location invariant after [L18-L18] expression == 0 [2024-01-31 16:04:12,527 INFO L98 nessWitnessExtractor]: Location invariant before [L725-L725] (unsigned long )arg == 0UL [2024-01-31 16:04:12,528 INFO L98 nessWitnessExtractor]: Location invariant before [L732-L732] (unsigned long )arg == 0UL [2024-01-31 16:04:12,528 INFO L98 nessWitnessExtractor]: Location invariant before [L733-L733] (((((((((((0 <= __unbuffered_cnt) && (0 <= x)) && (0 <= y)) && (x <= 2)) && (x <= 127)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2) [2024-01-31 16:04:12,528 INFO L98 nessWitnessExtractor]: Location invariant before [L743-L743] (unsigned long )arg == 0UL [2024-01-31 16:04:12,528 INFO L98 nessWitnessExtractor]: Location invariant before [L18-L18] ((0 <= expression) && (expression <= 1)) && (expression == 0 || expression == 1) [2024-01-31 16:04:12,528 INFO L98 nessWitnessExtractor]: Location invariant before [L726-L726] (((((((((((0 <= __unbuffered_cnt) && (0 <= x)) && (0 <= y)) && (x <= 2)) && (x <= 127)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2) [2024-01-31 16:04:12,529 INFO L98 nessWitnessExtractor]: Location invariant before [L723-L723] (unsigned long )arg == 0UL [2024-01-31 16:04:12,529 INFO L98 nessWitnessExtractor]: Location invariant before [L720-L720] (unsigned long )arg == 0UL [2024-01-31 16:04:12,529 INFO L98 nessWitnessExtractor]: Location invariant before [L724-L724] (((((((((((0 <= __unbuffered_cnt) && (0 <= x)) && (0 <= y)) && (x <= 2)) && (x <= 127)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2) [2024-01-31 16:04:12,529 INFO L98 nessWitnessExtractor]: Location invariant before [L765-L765] ((((((((((0 <= __unbuffered_cnt) && (0 <= x)) && (0 <= y)) && (x <= 2)) && (x <= 127)) && (y <= 2)) && (y <= 127)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2) [2024-01-31 16:04:12,529 INFO L98 nessWitnessExtractor]: Location invariant before [L737-L737] ((((((((0 <= __unbuffered_cnt) && (0 <= x)) && (x <= 2)) && (x <= 127)) && (y == 1)) && ((unsigned long )arg == 0UL)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && ((x == 0 || x == 1) || x == 2) [2024-01-31 16:04:12,529 INFO L98 nessWitnessExtractor]: Location invariant before [L18-L18] expression == 0 [2024-01-31 16:04:12,530 INFO L98 nessWitnessExtractor]: Location invariant before [L728-L728] (unsigned long )arg == 0UL [2024-01-31 16:04:12,530 INFO L98 nessWitnessExtractor]: Location invariant before [L721-L721] (((((((((((0 <= __unbuffered_cnt) && (0 <= x)) && (0 <= y)) && (x <= 2)) && (x <= 127)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2) [2024-01-31 16:04:12,530 INFO L98 nessWitnessExtractor]: Location invariant before [L762-L762] ((((((((((0 <= __unbuffered_cnt) && (0 <= x)) && (0 <= y)) && (x <= 2)) && (x <= 127)) && (y <= 2)) && (y <= 127)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2) [2024-01-31 16:04:12,530 INFO L98 nessWitnessExtractor]: Location invariant before [L736-L736] (((((((((((0 <= __unbuffered_cnt) && (0 <= x)) && (0 <= y)) && (x <= 2)) && (x <= 127)) && (y <= 2)) && (y <= 127)) && ((unsigned long )arg == 0UL)) && (main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1)) && (main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1)) && ((x == 0 || x == 1) || x == 2)) && ((y == 0 || y == 1) || y == 2) [2024-01-31 16:04:12,580 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 16:04:12,764 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/safe029_tso.i[945,958] [2024-01-31 16:04:12,903 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:04:12,915 INFO L204 MainTranslator]: Completed pre-run Start Parsing Local [2024-01-31 16:04:12,942 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/safe029_tso.i[945,958] Start Parsing Local Start Parsing Local [2024-01-31 16:04:12,944 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 [2024-01-31 16:04:13,054 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:04:13,095 INFO L208 MainTranslator]: Completed translation [2024-01-31 16:04:13,096 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:04:13 WrapperNode [2024-01-31 16:04:13,096 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 16:04:13,098 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 16:04:13,098 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 16:04:13,098 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 16:04:13,105 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:04:13" (1/1) ... [2024-01-31 16:04:13,130 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:04:13" (1/1) ... [2024-01-31 16:04:13,164 INFO L138 Inliner]: procedures = 175, calls = 40, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 65 [2024-01-31 16:04:13,164 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 16:04:13,165 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 16:04:13,165 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 16:04:13,166 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 16:04:13,175 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:04:13" (1/1) ... [2024-01-31 16:04:13,176 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:04:13" (1/1) ... [2024-01-31 16:04:13,187 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:04:13" (1/1) ... [2024-01-31 16:04:13,207 INFO L175 MemorySlicer]: Split 4 memory accesses to 3 slices as follows [2, 1, 1]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-01-31 16:04:13,208 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:04:13" (1/1) ... [2024-01-31 16:04:13,208 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:04:13" (1/1) ... [2024-01-31 16:04:13,226 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:04:13" (1/1) ... [2024-01-31 16:04:13,229 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:04:13" (1/1) ... [2024-01-31 16:04:13,233 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:04:13" (1/1) ... [2024-01-31 16:04:13,235 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:04:13" (1/1) ... [2024-01-31 16:04:13,238 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 16:04:13,242 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 16:04:13,242 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 16:04:13,242 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 16:04:13,243 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:04:13" (1/1) ... [2024-01-31 16:04:13,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:04:13,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:04:13,268 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-31 16:04:13,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-31 16:04:13,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 16:04:13,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 16:04:13,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 16:04:13,301 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-31 16:04:13,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 16:04:13,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 16:04:13,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 16:04:13,301 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-01-31 16:04:13,302 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-01-31 16:04:13,302 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-01-31 16:04:13,302 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-01-31 16:04:13,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 16:04:13,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 16:04:13,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 16:04:13,302 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-31 16:04:13,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 16:04:13,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 16:04:13,304 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-31 16:04:13,437 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 16:04:13,439 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 16:04:13,902 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 16:04:13,902 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 16:04:14,036 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 16:04:14,039 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-31 16:04:14,039 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:04:14 BoogieIcfgContainer [2024-01-31 16:04:14,040 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 16:04:14,041 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 16:04:14,042 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 16:04:14,044 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 16:04:14,045 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 04:04:12" (1/4) ... [2024-01-31 16:04:14,045 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@733d49af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:04:14, skipping insertion in model container [2024-01-31 16:04:14,045 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:04:12" (2/4) ... [2024-01-31 16:04:14,046 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@733d49af and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:04:14, skipping insertion in model container [2024-01-31 16:04:14,046 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:04:13" (3/4) ... [2024-01-31 16:04:14,046 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@733d49af and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:04:14, skipping insertion in model container [2024-01-31 16:04:14,046 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:04:14" (4/4) ... [2024-01-31 16:04:14,047 INFO L112 eAbstractionObserver]: Analyzing ICFG safe029_tso.i [2024-01-31 16:04:14,062 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 16:04:14,063 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 34 error locations. [2024-01-31 16:04:14,063 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 16:04:14,137 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-31 16:04:14,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 73 transitions, 154 flow [2024-01-31 16:04:14,209 INFO L124 PetriNetUnfolderBase]: 1/71 cut-off events. [2024-01-31 16:04:14,210 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:04:14,214 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 9. Compared 252 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. [2024-01-31 16:04:14,214 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 73 transitions, 154 flow [2024-01-31 16:04:14,217 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 71 transitions, 148 flow [2024-01-31 16:04:14,253 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:04:14,274 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;@2214e635, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:04:14,274 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2024-01-31 16:04:14,277 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:04:14,277 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-01-31 16:04:14,277 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:04:14,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:14,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-01-31 16:04:14,279 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:14,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:14,284 INFO L85 PathProgramCache]: Analyzing trace with hash 9786, now seen corresponding path program 1 times [2024-01-31 16:04:14,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:14,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83936160] [2024-01-31 16:04:14,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:14,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:14,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:14,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:14,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:14,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83936160] [2024-01-31 16:04:14,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83936160] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:14,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:14,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-01-31 16:04:14,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400963532] [2024-01-31 16:04:14,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:14,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:04:14,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:14,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:04:14,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:04:14,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 73 [2024-01-31 16:04:14,687 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) [2024-01-31 16:04:14,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:14,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 73 [2024-01-31 16:04:14,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:15,421 INFO L124 PetriNetUnfolderBase]: 1835/3867 cut-off events. [2024-01-31 16:04:15,421 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-01-31 16:04:15,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6818 conditions, 3867 events. 1835/3867 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 31960 event pairs, 1363 based on Foata normal form. 90/2391 useless extension candidates. Maximal degree in co-relation 6806. Up to 2897 conditions per place. [2024-01-31 16:04:15,457 INFO L140 encePairwiseOnDemand]: 58/73 looper letters, 38 selfloop transitions, 3 changer transitions 0/69 dead transitions. [2024-01-31 16:04:15,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 69 transitions, 229 flow [2024-01-31 16:04:15,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:04:15,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:04:15,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 146 transitions. [2024-01-31 16:04:15,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-01-31 16:04:15,471 INFO L175 Difference]: Start difference. First operand has 77 places, 71 transitions, 148 flow. Second operand 3 states and 146 transitions. [2024-01-31 16:04:15,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 69 transitions, 229 flow [2024-01-31 16:04:15,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 69 transitions, 226 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:04:15,483 INFO L231 Difference]: Finished difference. Result has 69 places, 63 transitions, 147 flow [2024-01-31 16:04:15,485 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} [2024-01-31 16:04:15,489 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -8 predicate places. [2024-01-31 16:04:15,489 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 63 transitions, 147 flow [2024-01-31 16:04:15,489 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) [2024-01-31 16:04:15,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:15,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-01-31 16:04:15,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 16:04:15,490 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:15,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:15,491 INFO L85 PathProgramCache]: Analyzing trace with hash 291927509, now seen corresponding path program 1 times [2024-01-31 16:04:15,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:15,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821597333] [2024-01-31 16:04:15,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:15,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:15,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:15,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:15,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:15,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821597333] [2024-01-31 16:04:15,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821597333] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:15,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:15,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:04:15,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883485122] [2024-01-31 16:04:15,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:15,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:04:15,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:15,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:04:15,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:04:15,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 73 [2024-01-31 16:04:15,692 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) [2024-01-31 16:04:15,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:15,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 73 [2024-01-31 16:04:15,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:16,205 INFO L124 PetriNetUnfolderBase]: 2004/4163 cut-off events. [2024-01-31 16:04:16,205 INFO L125 PetriNetUnfolderBase]: For 336/336 co-relation queries the response was YES. [2024-01-31 16:04:16,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7800 conditions, 4163 events. 2004/4163 cut-off events. For 336/336 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 34300 event pairs, 1378 based on Foata normal form. 432/3285 useless extension candidates. Maximal degree in co-relation 7787. Up to 3018 conditions per place. [2024-01-31 16:04:16,248 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 55 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2024-01-31 16:04:16,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 79 transitions, 302 flow [2024-01-31 16:04:16,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:04:16,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:04:16,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 160 transitions. [2024-01-31 16:04:16,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.547945205479452 [2024-01-31 16:04:16,251 INFO L175 Difference]: Start difference. First operand has 69 places, 63 transitions, 147 flow. Second operand 4 states and 160 transitions. [2024-01-31 16:04:16,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 79 transitions, 302 flow [2024-01-31 16:04:16,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 79 transitions, 298 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 16:04:16,254 INFO L231 Difference]: Finished difference. Result has 66 places, 58 transitions, 138 flow [2024-01-31 16:04:16,254 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} [2024-01-31 16:04:16,255 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -11 predicate places. [2024-01-31 16:04:16,255 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 58 transitions, 138 flow [2024-01-31 16:04:16,255 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) [2024-01-31 16:04:16,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:16,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-01-31 16:04:16,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 16:04:16,256 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:16,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:16,256 INFO L85 PathProgramCache]: Analyzing trace with hash 459818543, now seen corresponding path program 1 times [2024-01-31 16:04:16,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:16,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665104711] [2024-01-31 16:04:16,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:16,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:16,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:16,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:16,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:16,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665104711] [2024-01-31 16:04:16,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665104711] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:16,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:16,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:04:16,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965697666] [2024-01-31 16:04:16,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:16,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:04:16,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:16,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:04:16,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:04:16,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 73 [2024-01-31 16:04:16,525 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) [2024-01-31 16:04:16,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:16,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 73 [2024-01-31 16:04:16,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:17,073 INFO L124 PetriNetUnfolderBase]: 2764/5543 cut-off events. [2024-01-31 16:04:17,073 INFO L125 PetriNetUnfolderBase]: For 548/553 co-relation queries the response was YES. [2024-01-31 16:04:17,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10559 conditions, 5543 events. 2764/5543 cut-off events. For 548/553 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 45283 event pairs, 2064 based on Foata normal form. 11/3929 useless extension candidates. Maximal degree in co-relation 10545. Up to 4329 conditions per place. [2024-01-31 16:04:17,105 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 48 selfloop transitions, 5 changer transitions 0/71 dead transitions. [2024-01-31 16:04:17,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 71 transitions, 278 flow [2024-01-31 16:04:17,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:04:17,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:04:17,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2024-01-31 16:04:17,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4589041095890411 [2024-01-31 16:04:17,150 INFO L175 Difference]: Start difference. First operand has 66 places, 58 transitions, 138 flow. Second operand 4 states and 134 transitions. [2024-01-31 16:04:17,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 71 transitions, 278 flow [2024-01-31 16:04:17,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 71 transitions, 274 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:04:17,152 INFO L231 Difference]: Finished difference. Result has 69 places, 60 transitions, 161 flow [2024-01-31 16:04:17,152 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=161, PETRI_PLACES=69, PETRI_TRANSITIONS=60} [2024-01-31 16:04:17,153 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -8 predicate places. [2024-01-31 16:04:17,153 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 60 transitions, 161 flow [2024-01-31 16:04:17,153 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) [2024-01-31 16:04:17,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:17,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:17,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 16:04:17,154 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:17,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:17,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1367938201, now seen corresponding path program 1 times [2024-01-31 16:04:17,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:17,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124616918] [2024-01-31 16:04:17,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:17,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:17,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:17,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:17,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:17,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124616918] [2024-01-31 16:04:17,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124616918] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:17,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:17,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:04:17,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320924197] [2024-01-31 16:04:17,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:17,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:04:17,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:17,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:04:17,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:04:17,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 73 [2024-01-31 16:04:17,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 60 transitions, 161 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) [2024-01-31 16:04:17,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:17,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 73 [2024-01-31 16:04:17,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:17,657 INFO L124 PetriNetUnfolderBase]: 2060/3931 cut-off events. [2024-01-31 16:04:17,657 INFO L125 PetriNetUnfolderBase]: For 480/489 co-relation queries the response was YES. [2024-01-31 16:04:17,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7822 conditions, 3931 events. 2060/3931 cut-off events. For 480/489 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 30483 event pairs, 261 based on Foata normal form. 463/3330 useless extension candidates. Maximal degree in co-relation 7806. Up to 3119 conditions per place. [2024-01-31 16:04:17,679 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 61 selfloop transitions, 2 changer transitions 0/81 dead transitions. [2024-01-31 16:04:17,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 81 transitions, 343 flow [2024-01-31 16:04:17,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:04:17,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:04:17,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 165 transitions. [2024-01-31 16:04:17,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.565068493150685 [2024-01-31 16:04:17,681 INFO L175 Difference]: Start difference. First operand has 69 places, 60 transitions, 161 flow. Second operand 4 states and 165 transitions. [2024-01-31 16:04:17,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 81 transitions, 343 flow [2024-01-31 16:04:17,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 81 transitions, 331 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:04:17,683 INFO L231 Difference]: Finished difference. Result has 65 places, 55 transitions, 147 flow [2024-01-31 16:04:17,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=143, 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=147, PETRI_PLACES=65, PETRI_TRANSITIONS=55} [2024-01-31 16:04:17,684 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -12 predicate places. [2024-01-31 16:04:17,684 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 55 transitions, 147 flow [2024-01-31 16:04:17,685 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) [2024-01-31 16:04:17,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:17,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:17,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 16:04:17,685 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:17,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:17,686 INFO L85 PathProgramCache]: Analyzing trace with hash -495999214, now seen corresponding path program 1 times [2024-01-31 16:04:17,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:17,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185431934] [2024-01-31 16:04:17,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:17,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:17,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:17,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:17,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:17,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185431934] [2024-01-31 16:04:17,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185431934] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:17,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:17,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:04:17,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636617674] [2024-01-31 16:04:17,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:17,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:04:17,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:17,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:04:17,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:04:17,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:17,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 55 transitions, 147 flow. Second operand has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:17,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:17,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:17,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:18,355 INFO L124 PetriNetUnfolderBase]: 2656/5275 cut-off events. [2024-01-31 16:04:18,356 INFO L125 PetriNetUnfolderBase]: For 623/638 co-relation queries the response was YES. [2024-01-31 16:04:18,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10311 conditions, 5275 events. 2656/5275 cut-off events. For 623/638 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 41995 event pairs, 1813 based on Foata normal form. 14/3781 useless extension candidates. Maximal degree in co-relation 10296. Up to 4131 conditions per place. [2024-01-31 16:04:18,379 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 54 selfloop transitions, 7 changer transitions 0/74 dead transitions. [2024-01-31 16:04:18,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 74 transitions, 322 flow [2024-01-31 16:04:18,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:04:18,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:04:18,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 169 transitions. [2024-01-31 16:04:18,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46301369863013697 [2024-01-31 16:04:18,381 INFO L175 Difference]: Start difference. First operand has 65 places, 55 transitions, 147 flow. Second operand 5 states and 169 transitions. [2024-01-31 16:04:18,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 74 transitions, 322 flow [2024-01-31 16:04:18,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 74 transitions, 313 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:04:18,383 INFO L231 Difference]: Finished difference. Result has 68 places, 57 transitions, 177 flow [2024-01-31 16:04:18,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=177, PETRI_PLACES=68, PETRI_TRANSITIONS=57} [2024-01-31 16:04:18,384 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -9 predicate places. [2024-01-31 16:04:18,384 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 57 transitions, 177 flow [2024-01-31 16:04:18,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:18,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:18,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:18,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 16:04:18,385 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:18,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:18,385 INFO L85 PathProgramCache]: Analyzing trace with hash -543588351, now seen corresponding path program 1 times [2024-01-31 16:04:18,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:18,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961916917] [2024-01-31 16:04:18,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:18,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:18,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:18,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:18,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:18,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961916917] [2024-01-31 16:04:18,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961916917] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:18,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:18,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:04:18,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798427798] [2024-01-31 16:04:18,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:18,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:04:18,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:18,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:04:18,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:04:18,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 73 [2024-01-31 16:04:18,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 57 transitions, 177 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) [2024-01-31 16:04:18,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:18,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 73 [2024-01-31 16:04:18,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:19,129 INFO L124 PetriNetUnfolderBase]: 2694/5250 cut-off events. [2024-01-31 16:04:19,130 INFO L125 PetriNetUnfolderBase]: For 1360/1369 co-relation queries the response was YES. [2024-01-31 16:04:19,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10965 conditions, 5250 events. 2694/5250 cut-off events. For 1360/1369 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 40690 event pairs, 2063 based on Foata normal form. 12/3779 useless extension candidates. Maximal degree in co-relation 10948. Up to 4309 conditions per place. [2024-01-31 16:04:19,150 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 46 selfloop transitions, 6 changer transitions 0/66 dead transitions. [2024-01-31 16:04:19,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 66 transitions, 308 flow [2024-01-31 16:04:19,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:04:19,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:04:19,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 130 transitions. [2024-01-31 16:04:19,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4452054794520548 [2024-01-31 16:04:19,152 INFO L175 Difference]: Start difference. First operand has 68 places, 57 transitions, 177 flow. Second operand 4 states and 130 transitions. [2024-01-31 16:04:19,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 66 transitions, 308 flow [2024-01-31 16:04:19,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 66 transitions, 294 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-01-31 16:04:19,155 INFO L231 Difference]: Finished difference. Result has 70 places, 59 transitions, 196 flow [2024-01-31 16:04:19,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=196, PETRI_PLACES=70, PETRI_TRANSITIONS=59} [2024-01-31 16:04:19,155 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, -7 predicate places. [2024-01-31 16:04:19,156 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 59 transitions, 196 flow [2024-01-31 16:04:19,156 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) [2024-01-31 16:04:19,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:19,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:19,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-31 16:04:19,156 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:19,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:19,157 INFO L85 PathProgramCache]: Analyzing trace with hash 86137813, now seen corresponding path program 1 times [2024-01-31 16:04:19,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:19,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593430220] [2024-01-31 16:04:19,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:19,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:19,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:19,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:19,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:19,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593430220] [2024-01-31 16:04:19,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593430220] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:19,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:19,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:04:19,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081884089] [2024-01-31 16:04:19,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:19,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:04:19,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:19,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:04:19,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:04:19,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:19,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 59 transitions, 196 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) [2024-01-31 16:04:19,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:19,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:19,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:19,835 INFO L124 PetriNetUnfolderBase]: 1564/3034 cut-off events. [2024-01-31 16:04:19,835 INFO L125 PetriNetUnfolderBase]: For 1225/1244 co-relation queries the response was YES. [2024-01-31 16:04:19,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6558 conditions, 3034 events. 1564/3034 cut-off events. For 1225/1244 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 20238 event pairs, 378 based on Foata normal form. 160/2489 useless extension candidates. Maximal degree in co-relation 6539. Up to 1340 conditions per place. [2024-01-31 16:04:19,851 INFO L140 encePairwiseOnDemand]: 61/73 looper letters, 99 selfloop transitions, 18 changer transitions 0/131 dead transitions. [2024-01-31 16:04:19,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 131 transitions, 617 flow [2024-01-31 16:04:19,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:04:19,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:04:19,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 246 transitions. [2024-01-31 16:04:19,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5616438356164384 [2024-01-31 16:04:19,853 INFO L175 Difference]: Start difference. First operand has 70 places, 59 transitions, 196 flow. Second operand 6 states and 246 transitions. [2024-01-31 16:04:19,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 131 transitions, 617 flow [2024-01-31 16:04:19,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 131 transitions, 612 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 16:04:19,873 INFO L231 Difference]: Finished difference. Result has 78 places, 72 transitions, 321 flow [2024-01-31 16:04:19,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=321, PETRI_PLACES=78, PETRI_TRANSITIONS=72} [2024-01-31 16:04:19,874 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 1 predicate places. [2024-01-31 16:04:19,874 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 72 transitions, 321 flow [2024-01-31 16:04:19,874 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) [2024-01-31 16:04:19,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:19,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:19,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-31 16:04:19,874 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:19,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:19,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1597616232, now seen corresponding path program 1 times [2024-01-31 16:04:19,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:19,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727416040] [2024-01-31 16:04:19,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:19,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:19,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:19,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:19,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:19,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727416040] [2024-01-31 16:04:19,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727416040] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:19,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:19,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:04:19,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144325746] [2024-01-31 16:04:19,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:19,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:04:19,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:19,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:04:19,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:04:19,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:04:19,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 72 transitions, 321 flow. Second operand has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:19,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:19,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:04:19,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:20,217 INFO L124 PetriNetUnfolderBase]: 1077/2229 cut-off events. [2024-01-31 16:04:20,217 INFO L125 PetriNetUnfolderBase]: For 2357/2368 co-relation queries the response was YES. [2024-01-31 16:04:20,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5667 conditions, 2229 events. 1077/2229 cut-off events. For 2357/2368 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 15455 event pairs, 602 based on Foata normal form. 10/1966 useless extension candidates. Maximal degree in co-relation 5643. Up to 1773 conditions per place. [2024-01-31 16:04:20,231 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 54 selfloop transitions, 7 changer transitions 0/82 dead transitions. [2024-01-31 16:04:20,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 82 transitions, 477 flow [2024-01-31 16:04:20,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:04:20,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:04:20,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 170 transitions. [2024-01-31 16:04:20,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5821917808219178 [2024-01-31 16:04:20,233 INFO L175 Difference]: Start difference. First operand has 78 places, 72 transitions, 321 flow. Second operand 4 states and 170 transitions. [2024-01-31 16:04:20,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 82 transitions, 477 flow [2024-01-31 16:04:20,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 82 transitions, 471 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-01-31 16:04:20,237 INFO L231 Difference]: Finished difference. Result has 82 places, 74 transitions, 353 flow [2024-01-31 16:04:20,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=353, PETRI_PLACES=82, PETRI_TRANSITIONS=74} [2024-01-31 16:04:20,237 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 5 predicate places. [2024-01-31 16:04:20,237 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 74 transitions, 353 flow [2024-01-31 16:04:20,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.6) internal successors, (163), 5 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:20,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:20,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:20,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-01-31 16:04:20,238 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:20,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:20,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1597617956, now seen corresponding path program 1 times [2024-01-31 16:04:20,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:20,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421785288] [2024-01-31 16:04:20,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:20,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:20,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:20,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:20,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:20,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421785288] [2024-01-31 16:04:20,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421785288] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:20,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:20,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:04:20,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355130667] [2024-01-31 16:04:20,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:20,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:04:20,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:20,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:04:20,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:04:20,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:20,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 74 transitions, 353 flow. Second operand has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:20,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:20,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:20,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:20,723 INFO L124 PetriNetUnfolderBase]: 1494/2943 cut-off events. [2024-01-31 16:04:20,723 INFO L125 PetriNetUnfolderBase]: For 3642/3651 co-relation queries the response was YES. [2024-01-31 16:04:20,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7742 conditions, 2943 events. 1494/2943 cut-off events. For 3642/3651 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 19549 event pairs, 865 based on Foata normal form. 18/2651 useless extension candidates. Maximal degree in co-relation 7715. Up to 2449 conditions per place. [2024-01-31 16:04:20,737 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 62 selfloop transitions, 8 changer transitions 0/85 dead transitions. [2024-01-31 16:04:20,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 85 transitions, 520 flow [2024-01-31 16:04:20,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:04:20,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:04:20,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 161 transitions. [2024-01-31 16:04:20,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4410958904109589 [2024-01-31 16:04:20,739 INFO L175 Difference]: Start difference. First operand has 82 places, 74 transitions, 353 flow. Second operand 5 states and 161 transitions. [2024-01-31 16:04:20,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 85 transitions, 520 flow [2024-01-31 16:04:20,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 85 transitions, 504 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-01-31 16:04:20,744 INFO L231 Difference]: Finished difference. Result has 85 places, 74 transitions, 359 flow [2024-01-31 16:04:20,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=359, PETRI_PLACES=85, PETRI_TRANSITIONS=74} [2024-01-31 16:04:20,745 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 8 predicate places. [2024-01-31 16:04:20,745 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 74 transitions, 359 flow [2024-01-31 16:04:20,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:20,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:20,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:20,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-31 16:04:20,745 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:20,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:20,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1047073738, now seen corresponding path program 1 times [2024-01-31 16:04:20,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:20,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495891241] [2024-01-31 16:04:20,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:20,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:20,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:20,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:20,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:20,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495891241] [2024-01-31 16:04:20,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495891241] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:20,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:20,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:04:20,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286241671] [2024-01-31 16:04:20,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:20,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:04:20,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:20,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:04:20,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:04:20,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:20,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 74 transitions, 359 flow. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:20,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:20,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:20,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:21,209 INFO L124 PetriNetUnfolderBase]: 1499/2960 cut-off events. [2024-01-31 16:04:21,209 INFO L125 PetriNetUnfolderBase]: For 3734/3743 co-relation queries the response was YES. [2024-01-31 16:04:21,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7834 conditions, 2960 events. 1499/2960 cut-off events. For 3734/3743 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 19686 event pairs, 907 based on Foata normal form. 12/2665 useless extension candidates. Maximal degree in co-relation 7806. Up to 2458 conditions per place. [2024-01-31 16:04:21,221 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 65 selfloop transitions, 10 changer transitions 0/90 dead transitions. [2024-01-31 16:04:21,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 90 transitions, 559 flow [2024-01-31 16:04:21,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:04:21,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:04:21,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 165 transitions. [2024-01-31 16:04:21,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520547945205479 [2024-01-31 16:04:21,223 INFO L175 Difference]: Start difference. First operand has 85 places, 74 transitions, 359 flow. Second operand 5 states and 165 transitions. [2024-01-31 16:04:21,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 90 transitions, 559 flow [2024-01-31 16:04:21,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 90 transitions, 543 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-31 16:04:21,227 INFO L231 Difference]: Finished difference. Result has 87 places, 77 transitions, 391 flow [2024-01-31 16:04:21,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=391, PETRI_PLACES=87, PETRI_TRANSITIONS=77} [2024-01-31 16:04:21,227 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 10 predicate places. [2024-01-31 16:04:21,228 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 77 transitions, 391 flow [2024-01-31 16:04:21,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:21,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:21,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:21,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-01-31 16:04:21,228 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:21,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:21,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1047091408, now seen corresponding path program 2 times [2024-01-31 16:04:21,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:21,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171913088] [2024-01-31 16:04:21,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:21,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:21,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:21,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:21,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:21,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171913088] [2024-01-31 16:04:21,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171913088] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:21,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:21,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:04:21,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613348663] [2024-01-31 16:04:21,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:21,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:04:21,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:21,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:04:21,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:04:21,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:21,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 77 transitions, 391 flow. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:21,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:21,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:21,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:21,693 INFO L124 PetriNetUnfolderBase]: 1494/2945 cut-off events. [2024-01-31 16:04:21,693 INFO L125 PetriNetUnfolderBase]: For 3911/3920 co-relation queries the response was YES. [2024-01-31 16:04:21,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7885 conditions, 2945 events. 1494/2945 cut-off events. For 3911/3920 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 19593 event pairs, 914 based on Foata normal form. 12/2649 useless extension candidates. Maximal degree in co-relation 7855. Up to 2455 conditions per place. [2024-01-31 16:04:21,711 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 61 selfloop transitions, 11 changer transitions 0/87 dead transitions. [2024-01-31 16:04:21,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 87 transitions, 567 flow [2024-01-31 16:04:21,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:04:21,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:04:21,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 161 transitions. [2024-01-31 16:04:21,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4410958904109589 [2024-01-31 16:04:21,713 INFO L175 Difference]: Start difference. First operand has 87 places, 77 transitions, 391 flow. Second operand 5 states and 161 transitions. [2024-01-31 16:04:21,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 87 transitions, 567 flow [2024-01-31 16:04:21,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 87 transitions, 545 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-01-31 16:04:21,718 INFO L231 Difference]: Finished difference. Result has 89 places, 78 transitions, 407 flow [2024-01-31 16:04:21,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=371, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=407, PETRI_PLACES=89, PETRI_TRANSITIONS=78} [2024-01-31 16:04:21,719 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 12 predicate places. [2024-01-31 16:04:21,719 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 78 transitions, 407 flow [2024-01-31 16:04:21,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:21,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:21,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:21,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-01-31 16:04:21,720 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:21,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:21,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1047092068, now seen corresponding path program 1 times [2024-01-31 16:04:21,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:21,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385456677] [2024-01-31 16:04:21,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:21,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:21,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:21,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:21,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:21,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385456677] [2024-01-31 16:04:21,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385456677] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:21,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:21,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:04:21,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763426299] [2024-01-31 16:04:21,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:21,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:04:21,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:21,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:04:21,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:04:21,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:21,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 78 transitions, 407 flow. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:21,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:21,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:21,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:22,302 INFO L124 PetriNetUnfolderBase]: 1536/2993 cut-off events. [2024-01-31 16:04:22,303 INFO L125 PetriNetUnfolderBase]: For 3646/3680 co-relation queries the response was YES. [2024-01-31 16:04:22,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7999 conditions, 2993 events. 1536/2993 cut-off events. For 3646/3680 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 20098 event pairs, 908 based on Foata normal form. 9/2606 useless extension candidates. Maximal degree in co-relation 7968. Up to 2498 conditions per place. [2024-01-31 16:04:22,319 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 68 selfloop transitions, 11 changer transitions 0/94 dead transitions. [2024-01-31 16:04:22,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 94 transitions, 623 flow [2024-01-31 16:04:22,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:04:22,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:04:22,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 164 transitions. [2024-01-31 16:04:22,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44931506849315067 [2024-01-31 16:04:22,321 INFO L175 Difference]: Start difference. First operand has 89 places, 78 transitions, 407 flow. Second operand 5 states and 164 transitions. [2024-01-31 16:04:22,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 94 transitions, 623 flow [2024-01-31 16:04:22,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 94 transitions, 608 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:04:22,327 INFO L231 Difference]: Finished difference. Result has 93 places, 82 transitions, 452 flow [2024-01-31 16:04:22,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=452, PETRI_PLACES=93, PETRI_TRANSITIONS=82} [2024-01-31 16:04:22,327 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 16 predicate places. [2024-01-31 16:04:22,328 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 82 transitions, 452 flow [2024-01-31 16:04:22,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:22,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:22,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:22,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-01-31 16:04:22,328 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:22,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:22,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1976048662, now seen corresponding path program 2 times [2024-01-31 16:04:22,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:22,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079063519] [2024-01-31 16:04:22,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:22,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:22,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:22,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:22,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:22,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079063519] [2024-01-31 16:04:22,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079063519] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:22,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:22,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:04:22,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633893257] [2024-01-31 16:04:22,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:22,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:04:22,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:22,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:04:22,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:04:22,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:22,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 82 transitions, 452 flow. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:22,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:22,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:22,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:22,883 INFO L124 PetriNetUnfolderBase]: 1531/2991 cut-off events. [2024-01-31 16:04:22,883 INFO L125 PetriNetUnfolderBase]: For 3922/3939 co-relation queries the response was YES. [2024-01-31 16:04:22,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8060 conditions, 2991 events. 1531/2991 cut-off events. For 3922/3939 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 20025 event pairs, 905 based on Foata normal form. 7/2604 useless extension candidates. Maximal degree in co-relation 8026. Up to 2495 conditions per place. [2024-01-31 16:04:22,902 INFO L140 encePairwiseOnDemand]: 67/73 looper letters, 66 selfloop transitions, 11 changer transitions 0/92 dead transitions. [2024-01-31 16:04:22,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 92 transitions, 630 flow [2024-01-31 16:04:22,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:04:22,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:04:22,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 162 transitions. [2024-01-31 16:04:22,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4438356164383562 [2024-01-31 16:04:22,903 INFO L175 Difference]: Start difference. First operand has 93 places, 82 transitions, 452 flow. Second operand 5 states and 162 transitions. [2024-01-31 16:04:22,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 92 transitions, 630 flow [2024-01-31 16:04:22,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 92 transitions, 620 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-01-31 16:04:22,910 INFO L231 Difference]: Finished difference. Result has 97 places, 82 transitions, 469 flow [2024-01-31 16:04:22,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=469, PETRI_PLACES=97, PETRI_TRANSITIONS=82} [2024-01-31 16:04:22,911 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 20 predicate places. [2024-01-31 16:04:22,911 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 82 transitions, 469 flow [2024-01-31 16:04:22,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:22,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:22,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:22,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-01-31 16:04:22,911 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:22,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:22,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1110514431, now seen corresponding path program 1 times [2024-01-31 16:04:22,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:22,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374400080] [2024-01-31 16:04:22,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:22,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:22,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:23,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:23,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:23,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374400080] [2024-01-31 16:04:23,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374400080] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:23,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:23,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:04:23,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572637657] [2024-01-31 16:04:23,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:23,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:04:23,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:23,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:04:23,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:04:23,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:04:23,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 82 transitions, 469 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) [2024-01-31 16:04:23,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:23,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:04:23,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:23,413 INFO L124 PetriNetUnfolderBase]: 1195/2483 cut-off events. [2024-01-31 16:04:23,414 INFO L125 PetriNetUnfolderBase]: For 3951/3965 co-relation queries the response was YES. [2024-01-31 16:04:23,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6676 conditions, 2483 events. 1195/2483 cut-off events. For 3951/3965 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 17746 event pairs, 459 based on Foata normal form. 47/2207 useless extension candidates. Maximal degree in co-relation 6640. Up to 1177 conditions per place. [2024-01-31 16:04:23,427 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 74 selfloop transitions, 22 changer transitions 0/119 dead transitions. [2024-01-31 16:04:23,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 119 transitions, 795 flow [2024-01-31 16:04:23,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:04:23,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:04:23,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 238 transitions. [2024-01-31 16:04:23,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6520547945205479 [2024-01-31 16:04:23,430 INFO L175 Difference]: Start difference. First operand has 97 places, 82 transitions, 469 flow. Second operand 5 states and 238 transitions. [2024-01-31 16:04:23,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 119 transitions, 795 flow [2024-01-31 16:04:23,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 119 transitions, 763 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-01-31 16:04:23,437 INFO L231 Difference]: Finished difference. Result has 97 places, 85 transitions, 510 flow [2024-01-31 16:04:23,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=510, PETRI_PLACES=97, PETRI_TRANSITIONS=85} [2024-01-31 16:04:23,438 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 20 predicate places. [2024-01-31 16:04:23,439 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 85 transitions, 510 flow [2024-01-31 16:04:23,439 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) [2024-01-31 16:04:23,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:23,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:23,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-01-31 16:04:23,440 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:23,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:23,440 INFO L85 PathProgramCache]: Analyzing trace with hash 2007544359, now seen corresponding path program 1 times [2024-01-31 16:04:23,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:23,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135824284] [2024-01-31 16:04:23,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:23,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:23,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:23,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:23,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:23,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135824284] [2024-01-31 16:04:23,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135824284] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:23,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:23,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:04:23,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796526783] [2024-01-31 16:04:23,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:23,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:04:23,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:23,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:04:23,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:04:23,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:23,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 85 transitions, 510 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) [2024-01-31 16:04:23,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:23,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:23,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:24,113 INFO L124 PetriNetUnfolderBase]: 1498/2956 cut-off events. [2024-01-31 16:04:24,113 INFO L125 PetriNetUnfolderBase]: For 4933/4945 co-relation queries the response was YES. [2024-01-31 16:04:24,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8397 conditions, 2956 events. 1498/2956 cut-off events. For 4933/4945 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 19844 event pairs, 368 based on Foata normal form. 42/2715 useless extension candidates. Maximal degree in co-relation 8361. Up to 1402 conditions per place. [2024-01-31 16:04:24,130 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 89 selfloop transitions, 26 changer transitions 0/131 dead transitions. [2024-01-31 16:04:24,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 131 transitions, 896 flow [2024-01-31 16:04:24,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:04:24,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:04:24,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 229 transitions. [2024-01-31 16:04:24,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5228310502283106 [2024-01-31 16:04:24,132 INFO L175 Difference]: Start difference. First operand has 97 places, 85 transitions, 510 flow. Second operand 6 states and 229 transitions. [2024-01-31 16:04:24,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 131 transitions, 896 flow [2024-01-31 16:04:24,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 131 transitions, 879 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-01-31 16:04:24,141 INFO L231 Difference]: Finished difference. Result has 103 places, 87 transitions, 578 flow [2024-01-31 16:04:24,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=578, PETRI_PLACES=103, PETRI_TRANSITIONS=87} [2024-01-31 16:04:24,142 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 26 predicate places. [2024-01-31 16:04:24,142 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 87 transitions, 578 flow [2024-01-31 16:04:24,142 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) [2024-01-31 16:04:24,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:24,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:24,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-01-31 16:04:24,142 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:24,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:24,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1393223429, now seen corresponding path program 1 times [2024-01-31 16:04:24,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:24,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949904045] [2024-01-31 16:04:24,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:24,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:24,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:24,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:24,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:24,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949904045] [2024-01-31 16:04:24,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949904045] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:24,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:24,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:04:24,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740691797] [2024-01-31 16:04:24,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:24,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:04:24,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:24,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:04:24,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:04:24,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:04:24,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 87 transitions, 578 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) [2024-01-31 16:04:24,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:24,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:04:24,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:24,618 INFO L124 PetriNetUnfolderBase]: 1050/2156 cut-off events. [2024-01-31 16:04:24,619 INFO L125 PetriNetUnfolderBase]: For 5113/5127 co-relation queries the response was YES. [2024-01-31 16:04:24,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6443 conditions, 2156 events. 1050/2156 cut-off events. For 5113/5127 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 14649 event pairs, 403 based on Foata normal form. 22/1959 useless extension candidates. Maximal degree in co-relation 6404. Up to 1125 conditions per place. [2024-01-31 16:04:24,633 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 74 selfloop transitions, 23 changer transitions 0/121 dead transitions. [2024-01-31 16:04:24,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 121 transitions, 922 flow [2024-01-31 16:04:24,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:04:24,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:04:24,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 235 transitions. [2024-01-31 16:04:24,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6438356164383562 [2024-01-31 16:04:24,635 INFO L175 Difference]: Start difference. First operand has 103 places, 87 transitions, 578 flow. Second operand 5 states and 235 transitions. [2024-01-31 16:04:24,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 121 transitions, 922 flow [2024-01-31 16:04:24,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 121 transitions, 870 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-01-31 16:04:24,641 INFO L231 Difference]: Finished difference. Result has 104 places, 89 transitions, 606 flow [2024-01-31 16:04:24,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=606, PETRI_PLACES=104, PETRI_TRANSITIONS=89} [2024-01-31 16:04:24,642 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 27 predicate places. [2024-01-31 16:04:24,642 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 89 transitions, 606 flow [2024-01-31 16:04:24,642 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) [2024-01-31 16:04:24,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:24,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:24,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-01-31 16:04:24,642 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:24,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:24,643 INFO L85 PathProgramCache]: Analyzing trace with hash -578826231, now seen corresponding path program 1 times [2024-01-31 16:04:24,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:24,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769025172] [2024-01-31 16:04:24,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:24,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:24,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:24,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:24,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:24,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769025172] [2024-01-31 16:04:24,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769025172] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:24,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:24,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:04:24,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401685989] [2024-01-31 16:04:24,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:24,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:04:24,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:24,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:04:24,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:04:24,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:24,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 89 transitions, 606 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) [2024-01-31 16:04:24,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:24,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:24,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:25,237 INFO L124 PetriNetUnfolderBase]: 1546/3041 cut-off events. [2024-01-31 16:04:25,237 INFO L125 PetriNetUnfolderBase]: For 6660/6672 co-relation queries the response was YES. [2024-01-31 16:04:25,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9050 conditions, 3041 events. 1546/3041 cut-off events. For 6660/6672 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 20325 event pairs, 535 based on Foata normal form. 39/2854 useless extension candidates. Maximal degree in co-relation 9010. Up to 1418 conditions per place. [2024-01-31 16:04:25,258 INFO L140 encePairwiseOnDemand]: 57/73 looper letters, 96 selfloop transitions, 34 changer transitions 0/146 dead transitions. [2024-01-31 16:04:25,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 146 transitions, 1080 flow [2024-01-31 16:04:25,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:04:25,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:04:25,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 243 transitions. [2024-01-31 16:04:25,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5547945205479452 [2024-01-31 16:04:25,259 INFO L175 Difference]: Start difference. First operand has 104 places, 89 transitions, 606 flow. Second operand 6 states and 243 transitions. [2024-01-31 16:04:25,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 146 transitions, 1080 flow [2024-01-31 16:04:25,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 146 transitions, 1052 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:04:25,269 INFO L231 Difference]: Finished difference. Result has 109 places, 97 transitions, 729 flow [2024-01-31 16:04:25,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=581, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=729, PETRI_PLACES=109, PETRI_TRANSITIONS=97} [2024-01-31 16:04:25,270 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 32 predicate places. [2024-01-31 16:04:25,270 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 97 transitions, 729 flow [2024-01-31 16:04:25,270 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) [2024-01-31 16:04:25,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:25,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:25,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-01-31 16:04:25,270 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:25,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:25,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1540942249, now seen corresponding path program 1 times [2024-01-31 16:04:25,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:25,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950614605] [2024-01-31 16:04:25,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:25,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:25,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:25,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:25,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:25,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950614605] [2024-01-31 16:04:25,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950614605] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:25,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:25,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:04:25,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442800414] [2024-01-31 16:04:25,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:25,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:04:25,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:25,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:04:25,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:04:25,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:25,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 97 transitions, 729 flow. Second operand has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:25,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:25,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:25,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:25,940 INFO L124 PetriNetUnfolderBase]: 1748/3400 cut-off events. [2024-01-31 16:04:25,940 INFO L125 PetriNetUnfolderBase]: For 9750/9896 co-relation queries the response was YES. [2024-01-31 16:04:25,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10872 conditions, 3400 events. 1748/3400 cut-off events. For 9750/9896 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 22402 event pairs, 495 based on Foata normal form. 80/3183 useless extension candidates. Maximal degree in co-relation 10830. Up to 1660 conditions per place. [2024-01-31 16:04:25,960 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 92 selfloop transitions, 30 changer transitions 0/141 dead transitions. [2024-01-31 16:04:25,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 141 transitions, 1144 flow [2024-01-31 16:04:25,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:04:25,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:04:25,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 229 transitions. [2024-01-31 16:04:25,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5228310502283106 [2024-01-31 16:04:25,962 INFO L175 Difference]: Start difference. First operand has 109 places, 97 transitions, 729 flow. Second operand 6 states and 229 transitions. [2024-01-31 16:04:25,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 141 transitions, 1144 flow [2024-01-31 16:04:25,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 141 transitions, 1077 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-01-31 16:04:25,976 INFO L231 Difference]: Finished difference. Result has 110 places, 97 transitions, 735 flow [2024-01-31 16:04:25,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=662, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=735, PETRI_PLACES=110, PETRI_TRANSITIONS=97} [2024-01-31 16:04:25,977 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 33 predicate places. [2024-01-31 16:04:25,977 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 97 transitions, 735 flow [2024-01-31 16:04:25,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:25,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:25,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:25,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-01-31 16:04:25,977 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:25,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:25,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1725325375, now seen corresponding path program 2 times [2024-01-31 16:04:25,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:25,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676760740] [2024-01-31 16:04:25,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:25,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:25,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:26,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:26,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:26,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676760740] [2024-01-31 16:04:26,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676760740] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:26,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:26,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:04:26,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036622538] [2024-01-31 16:04:26,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:26,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:04:26,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:26,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:04:26,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:04:26,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:26,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 97 transitions, 735 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) [2024-01-31 16:04:26,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:26,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:26,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:26,620 INFO L124 PetriNetUnfolderBase]: 1713/3371 cut-off events. [2024-01-31 16:04:26,621 INFO L125 PetriNetUnfolderBase]: For 10215/10227 co-relation queries the response was YES. [2024-01-31 16:04:26,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11287 conditions, 3371 events. 1713/3371 cut-off events. For 10215/10227 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 23053 event pairs, 579 based on Foata normal form. 39/3184 useless extension candidates. Maximal degree in co-relation 11245. Up to 1487 conditions per place. [2024-01-31 16:04:26,639 INFO L140 encePairwiseOnDemand]: 57/73 looper letters, 96 selfloop transitions, 46 changer transitions 0/158 dead transitions. [2024-01-31 16:04:26,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 158 transitions, 1375 flow [2024-01-31 16:04:26,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:04:26,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:04:26,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 240 transitions. [2024-01-31 16:04:26,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.547945205479452 [2024-01-31 16:04:26,641 INFO L175 Difference]: Start difference. First operand has 110 places, 97 transitions, 735 flow. Second operand 6 states and 240 transitions. [2024-01-31 16:04:26,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 158 transitions, 1375 flow [2024-01-31 16:04:26,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 158 transitions, 1297 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-01-31 16:04:26,652 INFO L231 Difference]: Finished difference. Result has 113 places, 114 transitions, 973 flow [2024-01-31 16:04:26,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=675, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=973, PETRI_PLACES=113, PETRI_TRANSITIONS=114} [2024-01-31 16:04:26,653 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 36 predicate places. [2024-01-31 16:04:26,653 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 114 transitions, 973 flow [2024-01-31 16:04:26,653 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) [2024-01-31 16:04:26,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:26,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:26,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-01-31 16:04:26,654 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:26,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:26,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1215528109, now seen corresponding path program 1 times [2024-01-31 16:04:26,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:26,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558128386] [2024-01-31 16:04:26,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:26,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:26,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:26,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:26,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:26,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558128386] [2024-01-31 16:04:26,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558128386] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:26,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:26,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:04:26,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914898571] [2024-01-31 16:04:26,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:26,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:04:26,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:26,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:04:26,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:04:26,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:26,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 114 transitions, 973 flow. Second operand has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:26,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:26,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:26,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:27,297 INFO L124 PetriNetUnfolderBase]: 1698/3347 cut-off events. [2024-01-31 16:04:27,297 INFO L125 PetriNetUnfolderBase]: For 11815/11833 co-relation queries the response was YES. [2024-01-31 16:04:27,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12158 conditions, 3347 events. 1698/3347 cut-off events. For 11815/11833 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 22924 event pairs, 598 based on Foata normal form. 18/3139 useless extension candidates. Maximal degree in co-relation 12113. Up to 1484 conditions per place. [2024-01-31 16:04:27,329 INFO L140 encePairwiseOnDemand]: 60/73 looper letters, 95 selfloop transitions, 46 changer transitions 0/157 dead transitions. [2024-01-31 16:04:27,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 157 transitions, 1495 flow [2024-01-31 16:04:27,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:04:27,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:04:27,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 234 transitions. [2024-01-31 16:04:27,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5342465753424658 [2024-01-31 16:04:27,331 INFO L175 Difference]: Start difference. First operand has 113 places, 114 transitions, 973 flow. Second operand 6 states and 234 transitions. [2024-01-31 16:04:27,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 157 transitions, 1495 flow [2024-01-31 16:04:27,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 157 transitions, 1459 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:04:27,357 INFO L231 Difference]: Finished difference. Result has 117 places, 114 transitions, 1039 flow [2024-01-31 16:04:27,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=937, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1039, PETRI_PLACES=117, PETRI_TRANSITIONS=114} [2024-01-31 16:04:27,358 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 40 predicate places. [2024-01-31 16:04:27,358 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 114 transitions, 1039 flow [2024-01-31 16:04:27,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:27,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:27,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:27,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-01-31 16:04:27,359 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:27,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:27,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1452754929, now seen corresponding path program 2 times [2024-01-31 16:04:27,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:27,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785790305] [2024-01-31 16:04:27,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:27,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:27,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:27,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:27,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:27,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785790305] [2024-01-31 16:04:27,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785790305] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:27,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:27,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:04:27,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939434544] [2024-01-31 16:04:27,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:27,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:04:27,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:27,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:04:27,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:04:27,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:04:27,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 114 transitions, 1039 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) [2024-01-31 16:04:27,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:27,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:04:27,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:27,865 INFO L124 PetriNetUnfolderBase]: 1370/2725 cut-off events. [2024-01-31 16:04:27,865 INFO L125 PetriNetUnfolderBase]: For 12905/13105 co-relation queries the response was YES. [2024-01-31 16:04:27,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9991 conditions, 2725 events. 1370/2725 cut-off events. For 12905/13105 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 18465 event pairs, 528 based on Foata normal form. 85/2527 useless extension candidates. Maximal degree in co-relation 9945. Up to 1432 conditions per place. [2024-01-31 16:04:27,886 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 76 selfloop transitions, 34 changer transitions 0/142 dead transitions. [2024-01-31 16:04:27,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 142 transitions, 1421 flow [2024-01-31 16:04:27,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:04:27,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:04:27,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 231 transitions. [2024-01-31 16:04:27,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6328767123287671 [2024-01-31 16:04:27,888 INFO L175 Difference]: Start difference. First operand has 117 places, 114 transitions, 1039 flow. Second operand 5 states and 231 transitions. [2024-01-31 16:04:27,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 142 transitions, 1421 flow [2024-01-31 16:04:27,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 142 transitions, 1326 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-01-31 16:04:27,902 INFO L231 Difference]: Finished difference. Result has 117 places, 114 transitions, 1023 flow [2024-01-31 16:04:27,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=944, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1023, PETRI_PLACES=117, PETRI_TRANSITIONS=114} [2024-01-31 16:04:27,902 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 40 predicate places. [2024-01-31 16:04:27,903 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 114 transitions, 1023 flow [2024-01-31 16:04:27,903 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) [2024-01-31 16:04:27,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:27,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:27,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-01-31 16:04:27,903 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:27,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:27,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1305580109, now seen corresponding path program 3 times [2024-01-31 16:04:27,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:27,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23490709] [2024-01-31 16:04:27,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:27,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:27,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:28,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:28,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:28,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23490709] [2024-01-31 16:04:28,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23490709] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:28,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:28,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:04:28,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323235033] [2024-01-31 16:04:28,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:28,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:04:28,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:28,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:04:28,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:04:28,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:28,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 114 transitions, 1023 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) [2024-01-31 16:04:28,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:28,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:28,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:28,510 INFO L124 PetriNetUnfolderBase]: 1620/3198 cut-off events. [2024-01-31 16:04:28,511 INFO L125 PetriNetUnfolderBase]: For 12179/12197 co-relation queries the response was YES. [2024-01-31 16:04:28,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11651 conditions, 3198 events. 1620/3198 cut-off events. For 12179/12197 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 21616 event pairs, 511 based on Foata normal form. 33/3002 useless extension candidates. Maximal degree in co-relation 11604. Up to 1460 conditions per place. [2024-01-31 16:04:28,531 INFO L140 encePairwiseOnDemand]: 61/73 looper letters, 101 selfloop transitions, 41 changer transitions 0/158 dead transitions. [2024-01-31 16:04:28,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 158 transitions, 1598 flow [2024-01-31 16:04:28,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:04:28,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:04:28,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 225 transitions. [2024-01-31 16:04:28,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5136986301369864 [2024-01-31 16:04:28,533 INFO L175 Difference]: Start difference. First operand has 117 places, 114 transitions, 1023 flow. Second operand 6 states and 225 transitions. [2024-01-31 16:04:28,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 158 transitions, 1598 flow [2024-01-31 16:04:28,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 158 transitions, 1479 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-01-31 16:04:28,554 INFO L231 Difference]: Finished difference. Result has 119 places, 122 transitions, 1140 flow [2024-01-31 16:04:28,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=920, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1140, PETRI_PLACES=119, PETRI_TRANSITIONS=122} [2024-01-31 16:04:28,555 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 42 predicate places. [2024-01-31 16:04:28,555 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 122 transitions, 1140 flow [2024-01-31 16:04:28,556 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) [2024-01-31 16:04:28,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:28,556 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:28,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-01-31 16:04:28,556 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:28,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:28,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1233142535, now seen corresponding path program 2 times [2024-01-31 16:04:28,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:28,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627342990] [2024-01-31 16:04:28,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:28,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:28,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:28,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:28,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:28,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627342990] [2024-01-31 16:04:28,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627342990] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:28,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:28,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:04:28,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332159100] [2024-01-31 16:04:28,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:28,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:04:28,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:28,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:04:28,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:04:28,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:28,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 122 transitions, 1140 flow. Second operand has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:28,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:28,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:28,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:29,287 INFO L124 PetriNetUnfolderBase]: 2127/4093 cut-off events. [2024-01-31 16:04:29,287 INFO L125 PetriNetUnfolderBase]: For 18690/18951 co-relation queries the response was YES. [2024-01-31 16:04:29,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15799 conditions, 4093 events. 2127/4093 cut-off events. For 18690/18951 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 27436 event pairs, 555 based on Foata normal form. 102/3879 useless extension candidates. Maximal degree in co-relation 15750. Up to 1745 conditions per place. [2024-01-31 16:04:29,312 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 106 selfloop transitions, 43 changer transitions 0/173 dead transitions. [2024-01-31 16:04:29,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 173 transitions, 1775 flow [2024-01-31 16:04:29,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:04:29,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:04:29,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 224 transitions. [2024-01-31 16:04:29,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5114155251141552 [2024-01-31 16:04:29,313 INFO L175 Difference]: Start difference. First operand has 119 places, 122 transitions, 1140 flow. Second operand 6 states and 224 transitions. [2024-01-31 16:04:29,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 173 transitions, 1775 flow [2024-01-31 16:04:29,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 173 transitions, 1745 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:04:29,344 INFO L231 Difference]: Finished difference. Result has 124 places, 131 transitions, 1358 flow [2024-01-31 16:04:29,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1113, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1358, PETRI_PLACES=124, PETRI_TRANSITIONS=131} [2024-01-31 16:04:29,344 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 47 predicate places. [2024-01-31 16:04:29,344 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 131 transitions, 1358 flow [2024-01-31 16:04:29,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:29,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:29,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:29,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-01-31 16:04:29,345 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:29,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:29,346 INFO L85 PathProgramCache]: Analyzing trace with hash -629527125, now seen corresponding path program 2 times [2024-01-31 16:04:29,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:29,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807893353] [2024-01-31 16:04:29,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:29,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:29,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:29,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:29,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:29,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807893353] [2024-01-31 16:04:29,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807893353] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:29,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:29,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:04:29,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444522322] [2024-01-31 16:04:29,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:29,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:04:29,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:29,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:04:29,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:04:29,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:29,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 131 transitions, 1358 flow. Second operand has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:29,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:29,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:29,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:29,988 INFO L124 PetriNetUnfolderBase]: 1666/3250 cut-off events. [2024-01-31 16:04:29,988 INFO L125 PetriNetUnfolderBase]: For 15031/15049 co-relation queries the response was YES. [2024-01-31 16:04:29,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12692 conditions, 3250 events. 1666/3250 cut-off events. For 15031/15049 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 21479 event pairs, 463 based on Foata normal form. 63/3084 useless extension candidates. Maximal degree in co-relation 12641. Up to 1460 conditions per place. [2024-01-31 16:04:30,008 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 97 selfloop transitions, 51 changer transitions 0/164 dead transitions. [2024-01-31 16:04:30,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 164 transitions, 1823 flow [2024-01-31 16:04:30,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:04:30,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:04:30,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 221 transitions. [2024-01-31 16:04:30,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045662100456622 [2024-01-31 16:04:30,009 INFO L175 Difference]: Start difference. First operand has 124 places, 131 transitions, 1358 flow. Second operand 6 states and 221 transitions. [2024-01-31 16:04:30,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 164 transitions, 1823 flow [2024-01-31 16:04:30,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 164 transitions, 1789 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-01-31 16:04:30,035 INFO L231 Difference]: Finished difference. Result has 128 places, 131 transitions, 1448 flow [2024-01-31 16:04:30,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1324, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1448, PETRI_PLACES=128, PETRI_TRANSITIONS=131} [2024-01-31 16:04:30,041 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 51 predicate places. [2024-01-31 16:04:30,043 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 131 transitions, 1448 flow [2024-01-31 16:04:30,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:30,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:30,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:30,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-01-31 16:04:30,043 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:30,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:30,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1306257313, now seen corresponding path program 1 times [2024-01-31 16:04:30,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:30,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969532100] [2024-01-31 16:04:30,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:30,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:30,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:30,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:30,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:30,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969532100] [2024-01-31 16:04:30,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969532100] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:30,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:30,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:04:30,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507897501] [2024-01-31 16:04:30,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:30,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:04:30,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:30,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:04:30,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:04:30,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:30,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 131 transitions, 1448 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) [2024-01-31 16:04:30,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:30,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:30,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:30,713 INFO L124 PetriNetUnfolderBase]: 1889/3637 cut-off events. [2024-01-31 16:04:30,713 INFO L125 PetriNetUnfolderBase]: For 23443/23661 co-relation queries the response was YES. [2024-01-31 16:04:30,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14810 conditions, 3637 events. 1889/3637 cut-off events. For 23443/23661 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 23699 event pairs, 565 based on Foata normal form. 84/3422 useless extension candidates. Maximal degree in co-relation 14758. Up to 1715 conditions per place. [2024-01-31 16:04:30,730 INFO L140 encePairwiseOnDemand]: 61/73 looper letters, 99 selfloop transitions, 45 changer transitions 0/168 dead transitions. [2024-01-31 16:04:30,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 168 transitions, 1892 flow [2024-01-31 16:04:30,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:04:30,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:04:30,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 223 transitions. [2024-01-31 16:04:30,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5091324200913242 [2024-01-31 16:04:30,731 INFO L175 Difference]: Start difference. First operand has 128 places, 131 transitions, 1448 flow. Second operand 6 states and 223 transitions. [2024-01-31 16:04:30,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 168 transitions, 1892 flow [2024-01-31 16:04:30,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 168 transitions, 1788 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-01-31 16:04:30,759 INFO L231 Difference]: Finished difference. Result has 129 places, 131 transitions, 1451 flow [2024-01-31 16:04:30,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1344, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1451, PETRI_PLACES=129, PETRI_TRANSITIONS=131} [2024-01-31 16:04:30,760 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 52 predicate places. [2024-01-31 16:04:30,760 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 131 transitions, 1451 flow [2024-01-31 16:04:30,760 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) [2024-01-31 16:04:30,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:30,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:30,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-01-31 16:04:30,761 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:30,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:30,761 INFO L85 PathProgramCache]: Analyzing trace with hash -607206899, now seen corresponding path program 3 times [2024-01-31 16:04:30,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:30,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417846208] [2024-01-31 16:04:30,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:30,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:30,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:30,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:30,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:30,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417846208] [2024-01-31 16:04:30,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417846208] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:30,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:30,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:04:30,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547205589] [2024-01-31 16:04:30,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:30,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:04:30,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:30,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:04:30,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:04:30,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:30,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 131 transitions, 1451 flow. Second operand has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:30,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:30,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:30,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:31,383 INFO L124 PetriNetUnfolderBase]: 1971/3745 cut-off events. [2024-01-31 16:04:31,383 INFO L125 PetriNetUnfolderBase]: For 26408/26674 co-relation queries the response was YES. [2024-01-31 16:04:31,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15756 conditions, 3745 events. 1971/3745 cut-off events. For 26408/26674 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 24341 event pairs, 727 based on Foata normal form. 105/3556 useless extension candidates. Maximal degree in co-relation 15703. Up to 1755 conditions per place. [2024-01-31 16:04:31,409 INFO L140 encePairwiseOnDemand]: 60/73 looper letters, 90 selfloop transitions, 61 changer transitions 0/175 dead transitions. [2024-01-31 16:04:31,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 175 transitions, 2063 flow [2024-01-31 16:04:31,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:04:31,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:04:31,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 221 transitions. [2024-01-31 16:04:31,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5045662100456622 [2024-01-31 16:04:31,425 INFO L175 Difference]: Start difference. First operand has 129 places, 131 transitions, 1451 flow. Second operand 6 states and 221 transitions. [2024-01-31 16:04:31,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 175 transitions, 2063 flow [2024-01-31 16:04:31,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 175 transitions, 1941 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-01-31 16:04:31,462 INFO L231 Difference]: Finished difference. Result has 131 places, 142 transitions, 1629 flow [2024-01-31 16:04:31,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1349, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1629, PETRI_PLACES=131, PETRI_TRANSITIONS=142} [2024-01-31 16:04:31,463 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 54 predicate places. [2024-01-31 16:04:31,463 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 142 transitions, 1629 flow [2024-01-31 16:04:31,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 7 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:31,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:31,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:31,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-01-31 16:04:31,464 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:31,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:31,464 INFO L85 PathProgramCache]: Analyzing trace with hash -606404655, now seen corresponding path program 2 times [2024-01-31 16:04:31,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:31,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041988238] [2024-01-31 16:04:31,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:31,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:31,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:31,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:31,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:31,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041988238] [2024-01-31 16:04:31,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041988238] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:31,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:31,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:04:31,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201357028] [2024-01-31 16:04:31,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:31,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:04:31,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:31,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:04:31,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:04:31,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:31,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 142 transitions, 1629 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) [2024-01-31 16:04:31,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:31,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:31,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:32,115 INFO L124 PetriNetUnfolderBase]: 2017/3839 cut-off events. [2024-01-31 16:04:32,115 INFO L125 PetriNetUnfolderBase]: For 27285/27572 co-relation queries the response was YES. [2024-01-31 16:04:32,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16944 conditions, 3839 events. 2017/3839 cut-off events. For 27285/27572 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 25186 event pairs, 721 based on Foata normal form. 111/3656 useless extension candidates. Maximal degree in co-relation 16889. Up to 1773 conditions per place. [2024-01-31 16:04:32,139 INFO L140 encePairwiseOnDemand]: 59/73 looper letters, 90 selfloop transitions, 67 changer transitions 0/181 dead transitions. [2024-01-31 16:04:32,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 181 transitions, 2211 flow [2024-01-31 16:04:32,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:04:32,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:04:32,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 224 transitions. [2024-01-31 16:04:32,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5114155251141552 [2024-01-31 16:04:32,140 INFO L175 Difference]: Start difference. First operand has 131 places, 142 transitions, 1629 flow. Second operand 6 states and 224 transitions. [2024-01-31 16:04:32,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 181 transitions, 2211 flow [2024-01-31 16:04:32,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 181 transitions, 2124 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-01-31 16:04:32,180 INFO L231 Difference]: Finished difference. Result has 135 places, 149 transitions, 1841 flow [2024-01-31 16:04:32,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1547, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1841, PETRI_PLACES=135, PETRI_TRANSITIONS=149} [2024-01-31 16:04:32,180 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 58 predicate places. [2024-01-31 16:04:32,181 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 149 transitions, 1841 flow [2024-01-31 16:04:32,181 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) [2024-01-31 16:04:32,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:32,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:32,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-01-31 16:04:32,181 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:32,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:32,182 INFO L85 PathProgramCache]: Analyzing trace with hash -606376755, now seen corresponding path program 3 times [2024-01-31 16:04:32,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:32,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407727789] [2024-01-31 16:04:32,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:32,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:32,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:32,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:32,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:32,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407727789] [2024-01-31 16:04:32,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407727789] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:32,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:32,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:04:32,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669499462] [2024-01-31 16:04:32,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:32,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:04:32,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:32,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:04:32,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:04:32,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:32,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 149 transitions, 1841 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) [2024-01-31 16:04:32,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:32,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:32,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:32,816 INFO L124 PetriNetUnfolderBase]: 2053/3893 cut-off events. [2024-01-31 16:04:32,817 INFO L125 PetriNetUnfolderBase]: For 30074/30385 co-relation queries the response was YES. [2024-01-31 16:04:32,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17778 conditions, 3893 events. 2053/3893 cut-off events. For 30074/30385 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 25517 event pairs, 721 based on Foata normal form. 99/3695 useless extension candidates. Maximal degree in co-relation 17721. Up to 1791 conditions per place. [2024-01-31 16:04:32,844 INFO L140 encePairwiseOnDemand]: 60/73 looper letters, 90 selfloop transitions, 78 changer transitions 0/192 dead transitions. [2024-01-31 16:04:32,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 192 transitions, 2440 flow [2024-01-31 16:04:32,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:04:32,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:04:32,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 223 transitions. [2024-01-31 16:04:32,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5091324200913242 [2024-01-31 16:04:32,845 INFO L175 Difference]: Start difference. First operand has 135 places, 149 transitions, 1841 flow. Second operand 6 states and 223 transitions. [2024-01-31 16:04:32,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 192 transitions, 2440 flow [2024-01-31 16:04:32,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 192 transitions, 2342 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-31 16:04:32,894 INFO L231 Difference]: Finished difference. Result has 139 places, 161 transitions, 2079 flow [2024-01-31 16:04:32,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1752, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2079, PETRI_PLACES=139, PETRI_TRANSITIONS=161} [2024-01-31 16:04:32,894 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 62 predicate places. [2024-01-31 16:04:32,895 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 161 transitions, 2079 flow [2024-01-31 16:04:32,895 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) [2024-01-31 16:04:32,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:32,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:32,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-01-31 16:04:32,895 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:32,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:32,896 INFO L85 PathProgramCache]: Analyzing trace with hash -417014024, now seen corresponding path program 1 times [2024-01-31 16:04:32,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:32,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872024082] [2024-01-31 16:04:32,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:32,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:32,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:33,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:33,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:33,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872024082] [2024-01-31 16:04:33,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872024082] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:33,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:33,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:04:33,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552358161] [2024-01-31 16:04:33,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:33,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:04:33,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:33,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:04:33,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:04:33,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:04:33,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 161 transitions, 2079 flow. Second operand has 6 states, 6 states have (on average 32.833333333333336) internal successors, (197), 6 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:33,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:33,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:04:33,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:33,675 INFO L124 PetriNetUnfolderBase]: 1712/3465 cut-off events. [2024-01-31 16:04:33,675 INFO L125 PetriNetUnfolderBase]: For 32850/33144 co-relation queries the response was YES. [2024-01-31 16:04:33,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16215 conditions, 3465 events. 1712/3465 cut-off events. For 32850/33144 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 24595 event pairs, 352 based on Foata normal form. 109/3206 useless extension candidates. Maximal degree in co-relation 16156. Up to 1501 conditions per place. [2024-01-31 16:04:33,704 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 207 selfloop transitions, 58 changer transitions 0/305 dead transitions. [2024-01-31 16:04:33,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 305 transitions, 4527 flow [2024-01-31 16:04:33,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:04:33,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:04:33,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 284 transitions. [2024-01-31 16:04:33,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6484018264840182 [2024-01-31 16:04:33,706 INFO L175 Difference]: Start difference. First operand has 139 places, 161 transitions, 2079 flow. Second operand 6 states and 284 transitions. [2024-01-31 16:04:33,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 305 transitions, 4527 flow [2024-01-31 16:04:33,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 305 transitions, 4242 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-01-31 16:04:33,757 INFO L231 Difference]: Finished difference. Result has 143 places, 217 transitions, 3171 flow [2024-01-31 16:04:33,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1933, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3171, PETRI_PLACES=143, PETRI_TRANSITIONS=217} [2024-01-31 16:04:33,758 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 66 predicate places. [2024-01-31 16:04:33,759 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 217 transitions, 3171 flow [2024-01-31 16:04:33,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 32.833333333333336) internal successors, (197), 6 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:33,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:33,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:33,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-01-31 16:04:33,759 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:33,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:33,760 INFO L85 PathProgramCache]: Analyzing trace with hash 853310352, now seen corresponding path program 1 times [2024-01-31 16:04:33,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:33,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178729114] [2024-01-31 16:04:33,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:33,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:33,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:33,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:33,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:33,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178729114] [2024-01-31 16:04:33,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178729114] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:33,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:33,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:04:33,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39836497] [2024-01-31 16:04:33,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:33,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:04:33,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:33,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:04:33,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:04:33,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:04:33,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 217 transitions, 3171 flow. Second operand has 6 states, 6 states have (on average 32.833333333333336) internal successors, (197), 6 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:33,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:33,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:04:33,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:34,557 INFO L124 PetriNetUnfolderBase]: 1763/3592 cut-off events. [2024-01-31 16:04:34,557 INFO L125 PetriNetUnfolderBase]: For 35283/35523 co-relation queries the response was YES. [2024-01-31 16:04:34,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17347 conditions, 3592 events. 1763/3592 cut-off events. For 35283/35523 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 25851 event pairs, 503 based on Foata normal form. 91/3330 useless extension candidates. Maximal degree in co-relation 17285. Up to 1500 conditions per place. [2024-01-31 16:04:34,590 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 202 selfloop transitions, 62 changer transitions 0/304 dead transitions. [2024-01-31 16:04:34,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 304 transitions, 4597 flow [2024-01-31 16:04:34,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:04:34,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:04:34,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 278 transitions. [2024-01-31 16:04:34,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.634703196347032 [2024-01-31 16:04:34,591 INFO L175 Difference]: Start difference. First operand has 143 places, 217 transitions, 3171 flow. Second operand 6 states and 278 transitions. [2024-01-31 16:04:34,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 304 transitions, 4597 flow [2024-01-31 16:04:34,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 304 transitions, 4589 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-01-31 16:04:34,650 INFO L231 Difference]: Finished difference. Result has 152 places, 248 transitions, 3852 flow [2024-01-31 16:04:34,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3163, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3852, PETRI_PLACES=152, PETRI_TRANSITIONS=248} [2024-01-31 16:04:34,650 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 75 predicate places. [2024-01-31 16:04:34,651 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 248 transitions, 3852 flow [2024-01-31 16:04:34,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 32.833333333333336) internal successors, (197), 6 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:34,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:34,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:34,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-01-31 16:04:34,651 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:34,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:34,652 INFO L85 PathProgramCache]: Analyzing trace with hash -677153347, now seen corresponding path program 1 times [2024-01-31 16:04:34,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:34,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886197349] [2024-01-31 16:04:34,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:34,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:34,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:34,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:34,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:34,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886197349] [2024-01-31 16:04:34,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886197349] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:34,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:34,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:04:34,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951987839] [2024-01-31 16:04:34,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:34,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:04:34,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:34,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:04:34,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:04:34,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:04:34,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 248 transitions, 3852 flow. Second operand has 6 states, 6 states have (on average 32.833333333333336) internal successors, (197), 6 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:34,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:34,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:04:34,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:35,355 INFO L124 PetriNetUnfolderBase]: 1788/3623 cut-off events. [2024-01-31 16:04:35,356 INFO L125 PetriNetUnfolderBase]: For 42696/42990 co-relation queries the response was YES. [2024-01-31 16:04:35,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18909 conditions, 3623 events. 1788/3623 cut-off events. For 42696/42990 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 26098 event pairs, 561 based on Foata normal form. 77/3377 useless extension candidates. Maximal degree in co-relation 18841. Up to 1831 conditions per place. [2024-01-31 16:04:35,391 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 125 selfloop transitions, 113 changer transitions 0/278 dead transitions. [2024-01-31 16:04:35,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 278 transitions, 4546 flow [2024-01-31 16:04:35,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:04:35,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:04:35,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 226 transitions. [2024-01-31 16:04:35,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6191780821917808 [2024-01-31 16:04:35,392 INFO L175 Difference]: Start difference. First operand has 152 places, 248 transitions, 3852 flow. Second operand 5 states and 226 transitions. [2024-01-31 16:04:35,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 278 transitions, 4546 flow [2024-01-31 16:04:35,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 278 transitions, 4521 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-01-31 16:04:35,475 INFO L231 Difference]: Finished difference. Result has 156 places, 250 transitions, 4091 flow [2024-01-31 16:04:35,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3833, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4091, PETRI_PLACES=156, PETRI_TRANSITIONS=250} [2024-01-31 16:04:35,475 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 79 predicate places. [2024-01-31 16:04:35,476 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 250 transitions, 4091 flow [2024-01-31 16:04:35,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 32.833333333333336) internal successors, (197), 6 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:35,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:35,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:35,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-01-31 16:04:35,476 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:35,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:35,476 INFO L85 PathProgramCache]: Analyzing trace with hash -676498627, now seen corresponding path program 2 times [2024-01-31 16:04:35,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:35,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180462354] [2024-01-31 16:04:35,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:35,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:35,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:35,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:35,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:35,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180462354] [2024-01-31 16:04:35,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180462354] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:35,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:35,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:04:35,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736309432] [2024-01-31 16:04:35,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:35,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:04:35,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:35,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:04:35,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:04:35,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:04:35,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 250 transitions, 4091 flow. Second operand has 6 states, 6 states have (on average 32.833333333333336) internal successors, (197), 6 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:35,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:35,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:04:35,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:36,198 INFO L124 PetriNetUnfolderBase]: 1739/3523 cut-off events. [2024-01-31 16:04:36,198 INFO L125 PetriNetUnfolderBase]: For 46559/46831 co-relation queries the response was YES. [2024-01-31 16:04:36,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18760 conditions, 3523 events. 1739/3523 cut-off events. For 46559/46831 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 25345 event pairs, 555 based on Foata normal form. 76/3255 useless extension candidates. Maximal degree in co-relation 18690. Up to 1797 conditions per place. [2024-01-31 16:04:36,219 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 122 selfloop transitions, 113 changer transitions 0/275 dead transitions. [2024-01-31 16:04:36,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 275 transitions, 4731 flow [2024-01-31 16:04:36,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:04:36,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:04:36,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 223 transitions. [2024-01-31 16:04:36,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6109589041095891 [2024-01-31 16:04:36,221 INFO L175 Difference]: Start difference. First operand has 156 places, 250 transitions, 4091 flow. Second operand 5 states and 223 transitions. [2024-01-31 16:04:36,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 275 transitions, 4731 flow [2024-01-31 16:04:36,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 275 transitions, 4597 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:04:36,288 INFO L231 Difference]: Finished difference. Result has 159 places, 250 transitions, 4199 flow [2024-01-31 16:04:36,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3957, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4199, PETRI_PLACES=159, PETRI_TRANSITIONS=250} [2024-01-31 16:04:36,289 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 82 predicate places. [2024-01-31 16:04:36,289 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 250 transitions, 4199 flow [2024-01-31 16:04:36,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 32.833333333333336) internal successors, (197), 6 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:36,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:36,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:36,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-01-31 16:04:36,290 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:36,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:36,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1358382364, now seen corresponding path program 1 times [2024-01-31 16:04:36,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:36,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438948360] [2024-01-31 16:04:36,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:36,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:36,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:36,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:36,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:36,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438948360] [2024-01-31 16:04:36,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438948360] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:36,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:36,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:04:36,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118265024] [2024-01-31 16:04:36,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:36,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:04:36,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:36,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:04:36,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:04:36,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:36,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 250 transitions, 4199 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) [2024-01-31 16:04:36,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:36,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:36,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:37,259 INFO L124 PetriNetUnfolderBase]: 2369/4541 cut-off events. [2024-01-31 16:04:37,259 INFO L125 PetriNetUnfolderBase]: For 51333/51548 co-relation queries the response was YES. [2024-01-31 16:04:37,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23645 conditions, 4541 events. 2369/4541 cut-off events. For 51333/51548 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 31429 event pairs, 562 based on Foata normal form. 101/4335 useless extension candidates. Maximal degree in co-relation 23574. Up to 1867 conditions per place. [2024-01-31 16:04:37,305 INFO L140 encePairwiseOnDemand]: 55/73 looper letters, 254 selfloop transitions, 81 changer transitions 0/359 dead transitions. [2024-01-31 16:04:37,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 359 transitions, 5824 flow [2024-01-31 16:04:37,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:04:37,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:04:37,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 285 transitions. [2024-01-31 16:04:37,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5577299412915852 [2024-01-31 16:04:37,307 INFO L175 Difference]: Start difference. First operand has 159 places, 250 transitions, 4199 flow. Second operand 7 states and 285 transitions. [2024-01-31 16:04:37,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 359 transitions, 5824 flow [2024-01-31 16:04:37,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 359 transitions, 5357 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-31 16:04:37,462 INFO L231 Difference]: Finished difference. Result has 162 places, 274 transitions, 4248 flow [2024-01-31 16:04:37,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=3767, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4248, PETRI_PLACES=162, PETRI_TRANSITIONS=274} [2024-01-31 16:04:37,463 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 85 predicate places. [2024-01-31 16:04:37,463 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 274 transitions, 4248 flow [2024-01-31 16:04:37,463 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) [2024-01-31 16:04:37,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:37,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:37,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-01-31 16:04:37,464 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:37,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:37,464 INFO L85 PathProgramCache]: Analyzing trace with hash 751279086, now seen corresponding path program 2 times [2024-01-31 16:04:37,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:37,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625855305] [2024-01-31 16:04:37,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:37,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:37,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:37,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:37,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:37,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625855305] [2024-01-31 16:04:37,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625855305] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:37,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:37,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:04:37,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565865102] [2024-01-31 16:04:37,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:37,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:04:37,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:37,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:04:37,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:04:37,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:37,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 274 transitions, 4248 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) [2024-01-31 16:04:37,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:37,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:37,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:38,542 INFO L124 PetriNetUnfolderBase]: 2359/4527 cut-off events. [2024-01-31 16:04:38,543 INFO L125 PetriNetUnfolderBase]: For 48733/48948 co-relation queries the response was YES. [2024-01-31 16:04:38,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24536 conditions, 4527 events. 2359/4527 cut-off events. For 48733/48948 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 31397 event pairs, 574 based on Foata normal form. 101/4321 useless extension candidates. Maximal degree in co-relation 24462. Up to 1865 conditions per place. [2024-01-31 16:04:38,578 INFO L140 encePairwiseOnDemand]: 55/73 looper letters, 253 selfloop transitions, 81 changer transitions 0/358 dead transitions. [2024-01-31 16:04:38,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 358 transitions, 5642 flow [2024-01-31 16:04:38,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:04:38,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:04:38,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 282 transitions. [2024-01-31 16:04:38,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5518590998043053 [2024-01-31 16:04:38,580 INFO L175 Difference]: Start difference. First operand has 162 places, 274 transitions, 4248 flow. Second operand 7 states and 282 transitions. [2024-01-31 16:04:38,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 358 transitions, 5642 flow [2024-01-31 16:04:38,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 358 transitions, 5555 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-01-31 16:04:38,694 INFO L231 Difference]: Finished difference. Result has 167 places, 279 transitions, 4425 flow [2024-01-31 16:04:38,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4162, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4425, PETRI_PLACES=167, PETRI_TRANSITIONS=279} [2024-01-31 16:04:38,695 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 90 predicate places. [2024-01-31 16:04:38,695 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 279 transitions, 4425 flow [2024-01-31 16:04:38,695 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) [2024-01-31 16:04:38,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:38,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:38,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-01-31 16:04:38,695 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:38,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:38,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1897061986, now seen corresponding path program 3 times [2024-01-31 16:04:38,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:38,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242259836] [2024-01-31 16:04:38,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:38,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:38,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:38,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:38,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:38,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242259836] [2024-01-31 16:04:38,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242259836] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:38,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:38,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:04:38,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757913180] [2024-01-31 16:04:38,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:38,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:04:38,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:38,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:04:38,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:04:38,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:38,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 279 transitions, 4425 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) [2024-01-31 16:04:38,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:38,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:38,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:39,913 INFO L124 PetriNetUnfolderBase]: 2507/4809 cut-off events. [2024-01-31 16:04:39,914 INFO L125 PetriNetUnfolderBase]: For 55359/55585 co-relation queries the response was YES. [2024-01-31 16:04:39,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26956 conditions, 4809 events. 2507/4809 cut-off events. For 55359/55585 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 33756 event pairs, 704 based on Foata normal form. 103/4615 useless extension candidates. Maximal degree in co-relation 26880. Up to 1873 conditions per place. [2024-01-31 16:04:39,986 INFO L140 encePairwiseOnDemand]: 55/73 looper letters, 267 selfloop transitions, 93 changer transitions 0/384 dead transitions. [2024-01-31 16:04:39,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 384 transitions, 6219 flow [2024-01-31 16:04:39,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:04:39,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:04:39,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 282 transitions. [2024-01-31 16:04:39,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5518590998043053 [2024-01-31 16:04:39,988 INFO L175 Difference]: Start difference. First operand has 167 places, 279 transitions, 4425 flow. Second operand 7 states and 282 transitions. [2024-01-31 16:04:39,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 384 transitions, 6219 flow [2024-01-31 16:04:40,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 384 transitions, 6050 flow, removed 36 selfloop flow, removed 3 redundant places. [2024-01-31 16:04:40,209 INFO L231 Difference]: Finished difference. Result has 174 places, 308 transitions, 4975 flow [2024-01-31 16:04:40,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4309, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4975, PETRI_PLACES=174, PETRI_TRANSITIONS=308} [2024-01-31 16:04:40,210 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 97 predicate places. [2024-01-31 16:04:40,211 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 308 transitions, 4975 flow [2024-01-31 16:04:40,211 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) [2024-01-31 16:04:40,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:40,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:40,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-01-31 16:04:40,211 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:40,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:40,212 INFO L85 PathProgramCache]: Analyzing trace with hash 744042163, now seen corresponding path program 1 times [2024-01-31 16:04:40,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:40,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419482536] [2024-01-31 16:04:40,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:40,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:40,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:40,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:40,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:40,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419482536] [2024-01-31 16:04:40,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419482536] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:40,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:40,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:04:40,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325763137] [2024-01-31 16:04:40,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:40,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:04:40,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:40,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:04:40,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:04:40,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:40,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 308 transitions, 4975 flow. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:40,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:40,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:40,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:41,335 INFO L124 PetriNetUnfolderBase]: 2662/4978 cut-off events. [2024-01-31 16:04:41,335 INFO L125 PetriNetUnfolderBase]: For 68113/68675 co-relation queries the response was YES. [2024-01-31 16:04:41,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29648 conditions, 4978 events. 2662/4978 cut-off events. For 68113/68675 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 34150 event pairs, 644 based on Foata normal form. 100/4726 useless extension candidates. Maximal degree in co-relation 29567. Up to 2714 conditions per place. [2024-01-31 16:04:41,396 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 192 selfloop transitions, 118 changer transitions 0/351 dead transitions. [2024-01-31 16:04:41,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 351 transitions, 5942 flow [2024-01-31 16:04:41,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:04:41,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:04:41,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 217 transitions. [2024-01-31 16:04:41,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4954337899543379 [2024-01-31 16:04:41,398 INFO L175 Difference]: Start difference. First operand has 174 places, 308 transitions, 4975 flow. Second operand 6 states and 217 transitions. [2024-01-31 16:04:41,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 351 transitions, 5942 flow [2024-01-31 16:04:41,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 351 transitions, 5867 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:04:41,585 INFO L231 Difference]: Finished difference. Result has 178 places, 308 transitions, 5174 flow [2024-01-31 16:04:41,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4920, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5174, PETRI_PLACES=178, PETRI_TRANSITIONS=308} [2024-01-31 16:04:41,586 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 101 predicate places. [2024-01-31 16:04:41,586 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 308 transitions, 5174 flow [2024-01-31 16:04:41,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:41,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:41,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:41,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-01-31 16:04:41,586 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:41,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:41,587 INFO L85 PathProgramCache]: Analyzing trace with hash -977106113, now seen corresponding path program 2 times [2024-01-31 16:04:41,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:41,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027430393] [2024-01-31 16:04:41,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:41,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:41,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:41,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:41,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:41,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027430393] [2024-01-31 16:04:41,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027430393] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:41,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:41,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:04:41,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056650505] [2024-01-31 16:04:41,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:41,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:04:41,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:41,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:04:41,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:04:41,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:41,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 308 transitions, 5174 flow. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:41,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:41,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:41,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:42,650 INFO L124 PetriNetUnfolderBase]: 2586/4878 cut-off events. [2024-01-31 16:04:42,650 INFO L125 PetriNetUnfolderBase]: For 70952/71472 co-relation queries the response was YES. [2024-01-31 16:04:42,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28991 conditions, 4878 events. 2586/4878 cut-off events. For 70952/71472 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 33545 event pairs, 632 based on Foata normal form. 94/4635 useless extension candidates. Maximal degree in co-relation 28909. Up to 2686 conditions per place. [2024-01-31 16:04:42,698 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 194 selfloop transitions, 114 changer transitions 0/349 dead transitions. [2024-01-31 16:04:42,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 349 transitions, 6107 flow [2024-01-31 16:04:42,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:04:42,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:04:42,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 214 transitions. [2024-01-31 16:04:42,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4885844748858447 [2024-01-31 16:04:42,699 INFO L175 Difference]: Start difference. First operand has 178 places, 308 transitions, 5174 flow. Second operand 6 states and 214 transitions. [2024-01-31 16:04:42,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 349 transitions, 6107 flow [2024-01-31 16:04:42,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 349 transitions, 5871 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-01-31 16:04:42,932 INFO L231 Difference]: Finished difference. Result has 179 places, 308 transitions, 5184 flow [2024-01-31 16:04:42,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=4938, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5184, PETRI_PLACES=179, PETRI_TRANSITIONS=308} [2024-01-31 16:04:42,933 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 102 predicate places. [2024-01-31 16:04:42,934 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 308 transitions, 5184 flow [2024-01-31 16:04:42,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:42,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:42,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:42,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-01-31 16:04:42,934 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:42,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:42,935 INFO L85 PathProgramCache]: Analyzing trace with hash -977739669, now seen corresponding path program 1 times [2024-01-31 16:04:42,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:42,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387241700] [2024-01-31 16:04:42,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:42,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:42,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:43,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:43,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:43,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387241700] [2024-01-31 16:04:43,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387241700] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:43,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:43,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:04:43,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123282640] [2024-01-31 16:04:43,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:43,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:04:43,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:43,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:04:43,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:04:43,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:43,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 308 transitions, 5184 flow. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:43,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:43,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:43,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:44,019 INFO L124 PetriNetUnfolderBase]: 2329/4477 cut-off events. [2024-01-31 16:04:44,020 INFO L125 PetriNetUnfolderBase]: For 63346/63586 co-relation queries the response was YES. [2024-01-31 16:04:44,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26652 conditions, 4477 events. 2329/4477 cut-off events. For 63346/63586 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 31110 event pairs, 638 based on Foata normal form. 91/4280 useless extension candidates. Maximal degree in co-relation 26569. Up to 2479 conditions per place. [2024-01-31 16:04:44,071 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 205 selfloop transitions, 116 changer transitions 0/345 dead transitions. [2024-01-31 16:04:44,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 345 transitions, 6131 flow [2024-01-31 16:04:44,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:04:44,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:04:44,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 210 transitions. [2024-01-31 16:04:44,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4794520547945205 [2024-01-31 16:04:44,072 INFO L175 Difference]: Start difference. First operand has 179 places, 308 transitions, 5184 flow. Second operand 6 states and 210 transitions. [2024-01-31 16:04:44,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 345 transitions, 6131 flow [2024-01-31 16:04:44,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 345 transitions, 5978 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-31 16:04:44,245 INFO L231 Difference]: Finished difference. Result has 181 places, 308 transitions, 5281 flow [2024-01-31 16:04:44,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=5031, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5281, PETRI_PLACES=181, PETRI_TRANSITIONS=308} [2024-01-31 16:04:44,246 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 104 predicate places. [2024-01-31 16:04:44,246 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 308 transitions, 5281 flow [2024-01-31 16:04:44,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:44,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:44,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:44,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-01-31 16:04:44,246 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:44,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:44,246 INFO L85 PathProgramCache]: Analyzing trace with hash -676441873, now seen corresponding path program 2 times [2024-01-31 16:04:44,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:44,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139924173] [2024-01-31 16:04:44,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:44,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:44,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:44,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:44,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:44,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139924173] [2024-01-31 16:04:44,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139924173] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:44,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:44,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:04:44,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329674594] [2024-01-31 16:04:44,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:44,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:04:44,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:44,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:04:44,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:04:44,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:44,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 308 transitions, 5281 flow. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:44,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:44,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:44,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:45,274 INFO L124 PetriNetUnfolderBase]: 2309/4445 cut-off events. [2024-01-31 16:04:45,274 INFO L125 PetriNetUnfolderBase]: For 66533/66767 co-relation queries the response was YES. [2024-01-31 16:04:45,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26562 conditions, 4445 events. 2309/4445 cut-off events. For 66533/66767 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 30839 event pairs, 640 based on Foata normal form. 91/4248 useless extension candidates. Maximal degree in co-relation 26478. Up to 2473 conditions per place. [2024-01-31 16:04:45,336 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 197 selfloop transitions, 120 changer transitions 0/341 dead transitions. [2024-01-31 16:04:45,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 341 transitions, 6165 flow [2024-01-31 16:04:45,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:04:45,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:04:45,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 207 transitions. [2024-01-31 16:04:45,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4726027397260274 [2024-01-31 16:04:45,345 INFO L175 Difference]: Start difference. First operand has 181 places, 308 transitions, 5281 flow. Second operand 6 states and 207 transitions. [2024-01-31 16:04:45,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 341 transitions, 6165 flow [2024-01-31 16:04:45,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 341 transitions, 6010 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-31 16:04:45,605 INFO L231 Difference]: Finished difference. Result has 183 places, 308 transitions, 5384 flow [2024-01-31 16:04:45,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=5126, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5384, PETRI_PLACES=183, PETRI_TRANSITIONS=308} [2024-01-31 16:04:45,606 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 106 predicate places. [2024-01-31 16:04:45,606 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 308 transitions, 5384 flow [2024-01-31 16:04:45,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:45,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:45,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:45,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-01-31 16:04:45,606 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:45,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:45,607 INFO L85 PathProgramCache]: Analyzing trace with hash 182210152, now seen corresponding path program 4 times [2024-01-31 16:04:45,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:45,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783923362] [2024-01-31 16:04:45,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:45,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:45,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:45,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:45,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:45,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783923362] [2024-01-31 16:04:45,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783923362] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:45,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:45,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:04:45,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600738002] [2024-01-31 16:04:45,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:45,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:04:45,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:45,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:04:45,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:04:45,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:45,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 308 transitions, 5384 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) [2024-01-31 16:04:45,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:45,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:45,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:46,793 INFO L124 PetriNetUnfolderBase]: 2332/4473 cut-off events. [2024-01-31 16:04:46,793 INFO L125 PetriNetUnfolderBase]: For 72768/73010 co-relation queries the response was YES. [2024-01-31 16:04:46,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26874 conditions, 4473 events. 2332/4473 cut-off events. For 72768/73010 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 31087 event pairs, 599 based on Foata normal form. 117/4307 useless extension candidates. Maximal degree in co-relation 26789. Up to 1731 conditions per place. [2024-01-31 16:04:46,844 INFO L140 encePairwiseOnDemand]: 60/73 looper letters, 280 selfloop transitions, 85 changer transitions 0/389 dead transitions. [2024-01-31 16:04:46,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 389 transitions, 7003 flow [2024-01-31 16:04:46,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:04:46,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:04:46,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 265 transitions. [2024-01-31 16:04:46,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5185909980430529 [2024-01-31 16:04:46,846 INFO L175 Difference]: Start difference. First operand has 183 places, 308 transitions, 5384 flow. Second operand 7 states and 265 transitions. [2024-01-31 16:04:46,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 389 transitions, 7003 flow [2024-01-31 16:04:46,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 389 transitions, 6741 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-01-31 16:04:47,002 INFO L231 Difference]: Finished difference. Result has 187 places, 326 transitions, 5608 flow [2024-01-31 16:04:47,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=5144, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5608, PETRI_PLACES=187, PETRI_TRANSITIONS=326} [2024-01-31 16:04:47,003 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 110 predicate places. [2024-01-31 16:04:47,003 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 326 transitions, 5608 flow [2024-01-31 16:04:47,004 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) [2024-01-31 16:04:47,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:47,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:47,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-01-31 16:04:47,004 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:47,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:47,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1429587652, now seen corresponding path program 1 times [2024-01-31 16:04:47,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:47,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383188044] [2024-01-31 16:04:47,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:47,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:47,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:47,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:47,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:47,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383188044] [2024-01-31 16:04:47,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383188044] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:47,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:47,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:04:47,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728101148] [2024-01-31 16:04:47,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:47,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:04:47,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:47,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:04:47,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:04:47,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:47,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 326 transitions, 5608 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) [2024-01-31 16:04:47,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:47,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:47,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:48,265 INFO L124 PetriNetUnfolderBase]: 2586/4850 cut-off events. [2024-01-31 16:04:48,265 INFO L125 PetriNetUnfolderBase]: For 84187/84688 co-relation queries the response was YES. [2024-01-31 16:04:48,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30201 conditions, 4850 events. 2586/4850 cut-off events. For 84187/84688 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 33033 event pairs, 611 based on Foata normal form. 76/4593 useless extension candidates. Maximal degree in co-relation 30113. Up to 1980 conditions per place. [2024-01-31 16:04:48,327 INFO L140 encePairwiseOnDemand]: 60/73 looper letters, 286 selfloop transitions, 91 changer transitions 0/419 dead transitions. [2024-01-31 16:04:48,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 419 transitions, 7354 flow [2024-01-31 16:04:48,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:04:48,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:04:48,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 266 transitions. [2024-01-31 16:04:48,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5205479452054794 [2024-01-31 16:04:48,329 INFO L175 Difference]: Start difference. First operand has 187 places, 326 transitions, 5608 flow. Second operand 7 states and 266 transitions. [2024-01-31 16:04:48,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 419 transitions, 7354 flow [2024-01-31 16:04:48,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 419 transitions, 7310 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 16:04:48,634 INFO L231 Difference]: Finished difference. Result has 195 places, 344 transitions, 6054 flow [2024-01-31 16:04:48,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=5574, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6054, PETRI_PLACES=195, PETRI_TRANSITIONS=344} [2024-01-31 16:04:48,635 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 118 predicate places. [2024-01-31 16:04:48,635 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 344 transitions, 6054 flow [2024-01-31 16:04:48,635 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) [2024-01-31 16:04:48,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:48,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:48,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-01-31 16:04:48,637 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:48,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:48,642 INFO L85 PathProgramCache]: Analyzing trace with hash 363478466, now seen corresponding path program 2 times [2024-01-31 16:04:48,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:48,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497842566] [2024-01-31 16:04:48,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:48,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:48,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:48,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:48,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:48,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497842566] [2024-01-31 16:04:48,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497842566] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:48,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:48,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:04:48,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221886508] [2024-01-31 16:04:48,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:48,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:04:48,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:48,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:04:48,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:04:48,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:48,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 344 transitions, 6054 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) [2024-01-31 16:04:48,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:48,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:48,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:49,988 INFO L124 PetriNetUnfolderBase]: 2777/5183 cut-off events. [2024-01-31 16:04:49,988 INFO L125 PetriNetUnfolderBase]: For 98828/99381 co-relation queries the response was YES. [2024-01-31 16:04:50,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33015 conditions, 5183 events. 2777/5183 cut-off events. For 98828/99381 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 35784 event pairs, 830 based on Foata normal form. 73/4930 useless extension candidates. Maximal degree in co-relation 32923. Up to 2029 conditions per place. [2024-01-31 16:04:50,073 INFO L140 encePairwiseOnDemand]: 57/73 looper letters, 273 selfloop transitions, 126 changer transitions 0/441 dead transitions. [2024-01-31 16:04:50,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 441 transitions, 7970 flow [2024-01-31 16:04:50,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:04:50,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:04:50,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 273 transitions. [2024-01-31 16:04:50,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5342465753424658 [2024-01-31 16:04:50,074 INFO L175 Difference]: Start difference. First operand has 195 places, 344 transitions, 6054 flow. Second operand 7 states and 273 transitions. [2024-01-31 16:04:50,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 441 transitions, 7970 flow [2024-01-31 16:04:50,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 441 transitions, 7910 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-01-31 16:04:50,378 INFO L231 Difference]: Finished difference. Result has 204 places, 374 transitions, 6770 flow [2024-01-31 16:04:50,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=6006, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6770, PETRI_PLACES=204, PETRI_TRANSITIONS=374} [2024-01-31 16:04:50,379 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 127 predicate places. [2024-01-31 16:04:50,379 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 374 transitions, 6770 flow [2024-01-31 16:04:50,379 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) [2024-01-31 16:04:50,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:50,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:50,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-01-31 16:04:50,379 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:50,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:50,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1399646548, now seen corresponding path program 3 times [2024-01-31 16:04:50,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:50,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740514455] [2024-01-31 16:04:50,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:50,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:50,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:50,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:50,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:50,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740514455] [2024-01-31 16:04:50,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740514455] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:50,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:50,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:04:50,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617468512] [2024-01-31 16:04:50,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:50,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:04:50,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:50,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:04:50,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:04:50,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:50,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 374 transitions, 6770 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) [2024-01-31 16:04:50,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:50,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:50,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:51,791 INFO L124 PetriNetUnfolderBase]: 2883/5370 cut-off events. [2024-01-31 16:04:51,791 INFO L125 PetriNetUnfolderBase]: For 111510/112084 co-relation queries the response was YES. [2024-01-31 16:04:51,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35984 conditions, 5370 events. 2883/5370 cut-off events. For 111510/112084 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 37251 event pairs, 806 based on Foata normal form. 73/5118 useless extension candidates. Maximal degree in co-relation 35887. Up to 2070 conditions per place. [2024-01-31 16:04:51,835 INFO L140 encePairwiseOnDemand]: 58/73 looper letters, 266 selfloop transitions, 151 changer transitions 0/459 dead transitions. [2024-01-31 16:04:51,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 459 transitions, 8587 flow [2024-01-31 16:04:51,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:04:51,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:04:51,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 269 transitions. [2024-01-31 16:04:51,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5264187866927593 [2024-01-31 16:04:51,836 INFO L175 Difference]: Start difference. First operand has 204 places, 374 transitions, 6770 flow. Second operand 7 states and 269 transitions. [2024-01-31 16:04:51,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 459 transitions, 8587 flow [2024-01-31 16:04:52,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 459 transitions, 8525 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-01-31 16:04:52,163 INFO L231 Difference]: Finished difference. Result has 212 places, 400 transitions, 7443 flow [2024-01-31 16:04:52,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=6716, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7443, PETRI_PLACES=212, PETRI_TRANSITIONS=400} [2024-01-31 16:04:52,164 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 135 predicate places. [2024-01-31 16:04:52,164 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 400 transitions, 7443 flow [2024-01-31 16:04:52,164 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) [2024-01-31 16:04:52,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:52,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:52,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-01-31 16:04:52,164 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:52,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:52,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1398572398, now seen corresponding path program 4 times [2024-01-31 16:04:52,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:52,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564527324] [2024-01-31 16:04:52,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:52,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:52,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:52,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:52,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:52,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564527324] [2024-01-31 16:04:52,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564527324] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:52,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:52,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:04:52,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670273329] [2024-01-31 16:04:52,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:52,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:04:52,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:52,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:04:52,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:04:52,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:52,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 400 transitions, 7443 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) [2024-01-31 16:04:52,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:52,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:52,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:53,571 INFO L124 PetriNetUnfolderBase]: 2900/5406 cut-off events. [2024-01-31 16:04:53,571 INFO L125 PetriNetUnfolderBase]: For 123574/124151 co-relation queries the response was YES. [2024-01-31 16:04:53,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37885 conditions, 5406 events. 2900/5406 cut-off events. For 123574/124151 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 37554 event pairs, 843 based on Foata normal form. 67/5148 useless extension candidates. Maximal degree in co-relation 37784. Up to 2079 conditions per place. [2024-01-31 16:04:53,661 INFO L140 encePairwiseOnDemand]: 58/73 looper letters, 266 selfloop transitions, 153 changer transitions 0/461 dead transitions. [2024-01-31 16:04:53,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 461 transitions, 8989 flow [2024-01-31 16:04:53,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:04:53,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:04:53,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 267 transitions. [2024-01-31 16:04:53,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5225048923679061 [2024-01-31 16:04:53,664 INFO L175 Difference]: Start difference. First operand has 212 places, 400 transitions, 7443 flow. Second operand 7 states and 267 transitions. [2024-01-31 16:04:53,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 461 transitions, 8989 flow [2024-01-31 16:04:54,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 461 transitions, 8800 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-01-31 16:04:54,064 INFO L231 Difference]: Finished difference. Result has 217 places, 407 transitions, 7727 flow [2024-01-31 16:04:54,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7256, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7727, PETRI_PLACES=217, PETRI_TRANSITIONS=407} [2024-01-31 16:04:54,065 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 140 predicate places. [2024-01-31 16:04:54,066 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 407 transitions, 7727 flow [2024-01-31 16:04:54,067 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) [2024-01-31 16:04:54,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:54,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:54,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-01-31 16:04:54,067 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:54,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:54,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1319574271, now seen corresponding path program 1 times [2024-01-31 16:04:54,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:54,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820303542] [2024-01-31 16:04:54,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:54,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:54,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:54,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:54,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:54,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820303542] [2024-01-31 16:04:54,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820303542] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:54,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:54,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:04:54,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482728483] [2024-01-31 16:04:54,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:54,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:04:54,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:54,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:04:54,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:04:54,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:04:54,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 407 transitions, 7727 flow. Second operand has 8 states, 8 states have (on average 32.625) internal successors, (261), 8 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:54,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:54,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:04:54,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:55,382 INFO L124 PetriNetUnfolderBase]: 2471/4975 cut-off events. [2024-01-31 16:04:55,382 INFO L125 PetriNetUnfolderBase]: For 121859/122546 co-relation queries the response was YES. [2024-01-31 16:04:55,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35268 conditions, 4975 events. 2471/4975 cut-off events. For 121859/122546 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 38121 event pairs, 596 based on Foata normal form. 83/4674 useless extension candidates. Maximal degree in co-relation 35165. Up to 1819 conditions per place. [2024-01-31 16:04:55,438 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 281 selfloop transitions, 134 changer transitions 1/492 dead transitions. [2024-01-31 16:04:55,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 492 transitions, 9405 flow [2024-01-31 16:04:55,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:04:55,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:04:55,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 351 transitions. [2024-01-31 16:04:55,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6868884540117417 [2024-01-31 16:04:55,439 INFO L175 Difference]: Start difference. First operand has 217 places, 407 transitions, 7727 flow. Second operand 7 states and 351 transitions. [2024-01-31 16:04:55,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 492 transitions, 9405 flow [2024-01-31 16:04:55,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 492 transitions, 9083 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-01-31 16:04:55,746 INFO L231 Difference]: Finished difference. Result has 223 places, 415 transitions, 8039 flow [2024-01-31 16:04:55,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7405, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8039, PETRI_PLACES=223, PETRI_TRANSITIONS=415} [2024-01-31 16:04:55,747 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 146 predicate places. [2024-01-31 16:04:55,747 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 415 transitions, 8039 flow [2024-01-31 16:04:55,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.625) internal successors, (261), 8 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:55,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:55,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:55,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-01-31 16:04:55,747 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:55,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:55,748 INFO L85 PathProgramCache]: Analyzing trace with hash 241868545, now seen corresponding path program 1 times [2024-01-31 16:04:55,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:55,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978225829] [2024-01-31 16:04:55,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:55,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:55,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:55,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:55,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:55,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978225829] [2024-01-31 16:04:55,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978225829] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:55,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:55,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:04:55,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350344732] [2024-01-31 16:04:55,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:55,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:04:55,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:55,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:04:55,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:04:55,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:04:55,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 415 transitions, 8039 flow. Second operand has 8 states, 8 states have (on average 32.625) internal successors, (261), 8 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:55,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:55,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:04:55,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:57,129 INFO L124 PetriNetUnfolderBase]: 2594/5172 cut-off events. [2024-01-31 16:04:57,129 INFO L125 PetriNetUnfolderBase]: For 134219/135097 co-relation queries the response was YES. [2024-01-31 16:04:57,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37277 conditions, 5172 events. 2594/5172 cut-off events. For 134219/135097 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 39847 event pairs, 753 based on Foata normal form. 155/5031 useless extension candidates. Maximal degree in co-relation 37169. Up to 2014 conditions per place. [2024-01-31 16:04:57,182 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 272 selfloop transitions, 139 changer transitions 0/487 dead transitions. [2024-01-31 16:04:57,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 487 transitions, 9762 flow [2024-01-31 16:04:57,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:04:57,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:04:57,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 339 transitions. [2024-01-31 16:04:57,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6634050880626223 [2024-01-31 16:04:57,184 INFO L175 Difference]: Start difference. First operand has 223 places, 415 transitions, 8039 flow. Second operand 7 states and 339 transitions. [2024-01-31 16:04:57,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 487 transitions, 9762 flow [2024-01-31 16:04:57,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 487 transitions, 9707 flow, removed 25 selfloop flow, removed 1 redundant places. [2024-01-31 16:04:57,544 INFO L231 Difference]: Finished difference. Result has 232 places, 425 transitions, 8607 flow [2024-01-31 16:04:57,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=7999, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8607, PETRI_PLACES=232, PETRI_TRANSITIONS=425} [2024-01-31 16:04:57,545 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 155 predicate places. [2024-01-31 16:04:57,545 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 425 transitions, 8607 flow [2024-01-31 16:04:57,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 32.625) internal successors, (261), 8 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:57,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:04:57,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:04:57,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-01-31 16:04:57,545 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:04:57,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:04:57,546 INFO L85 PathProgramCache]: Analyzing trace with hash -303570539, now seen corresponding path program 1 times [2024-01-31 16:04:57,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:04:57,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976607704] [2024-01-31 16:04:57,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:04:57,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:04:57,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:04:57,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:04:57,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:04:57,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976607704] [2024-01-31 16:04:57,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976607704] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:04:57,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:04:57,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:04:57,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321303763] [2024-01-31 16:04:57,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:04:57,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:04:57,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:04:57,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:04:57,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:04:57,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:04:57,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 425 transitions, 8607 flow. Second operand has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:04:57,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:04:57,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:04:57,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:04:59,520 INFO L124 PetriNetUnfolderBase]: 3646/6958 cut-off events. [2024-01-31 16:04:59,520 INFO L125 PetriNetUnfolderBase]: For 173343/174050 co-relation queries the response was YES. [2024-01-31 16:04:59,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49866 conditions, 6958 events. 3646/6958 cut-off events. For 173343/174050 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 52284 event pairs, 983 based on Foata normal form. 115/6829 useless extension candidates. Maximal degree in co-relation 49753. Up to 2721 conditions per place. [2024-01-31 16:04:59,598 INFO L140 encePairwiseOnDemand]: 52/73 looper letters, 321 selfloop transitions, 216 changer transitions 1/580 dead transitions. [2024-01-31 16:04:59,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 580 transitions, 11691 flow [2024-01-31 16:04:59,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:04:59,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:04:59,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 347 transitions. [2024-01-31 16:04:59,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5941780821917808 [2024-01-31 16:04:59,600 INFO L175 Difference]: Start difference. First operand has 232 places, 425 transitions, 8607 flow. Second operand 8 states and 347 transitions. [2024-01-31 16:04:59,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 580 transitions, 11691 flow [2024-01-31 16:05:00,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 580 transitions, 11643 flow, removed 24 selfloop flow, removed 0 redundant places. [2024-01-31 16:05:00,224 INFO L231 Difference]: Finished difference. Result has 243 places, 479 transitions, 10218 flow [2024-01-31 16:05:00,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=8569, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10218, PETRI_PLACES=243, PETRI_TRANSITIONS=479} [2024-01-31 16:05:00,225 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 166 predicate places. [2024-01-31 16:05:00,225 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 479 transitions, 10218 flow [2024-01-31 16:05:00,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:00,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:00,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:00,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-01-31 16:05:00,226 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:00,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:00,226 INFO L85 PathProgramCache]: Analyzing trace with hash 509453981, now seen corresponding path program 1 times [2024-01-31 16:05:00,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:00,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849216470] [2024-01-31 16:05:00,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:00,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:00,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:00,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:00,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:00,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849216470] [2024-01-31 16:05:00,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849216470] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:00,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:00,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:05:00,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94333489] [2024-01-31 16:05:00,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:00,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:05:00,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:00,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:05:00,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:05:00,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:05:00,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 479 transitions, 10218 flow. Second operand has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:00,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:00,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:05:00,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:02,088 INFO L124 PetriNetUnfolderBase]: 2919/5786 cut-off events. [2024-01-31 16:05:02,088 INFO L125 PetriNetUnfolderBase]: For 178481/179744 co-relation queries the response was YES. [2024-01-31 16:05:02,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45702 conditions, 5786 events. 2919/5786 cut-off events. For 178481/179744 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 45423 event pairs, 939 based on Foata normal form. 51/5519 useless extension candidates. Maximal degree in co-relation 45583. Up to 2846 conditions per place. [2024-01-31 16:05:02,175 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 313 selfloop transitions, 132 changer transitions 0/524 dead transitions. [2024-01-31 16:05:02,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 524 transitions, 11780 flow [2024-01-31 16:05:02,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:05:02,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:05:02,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 265 transitions. [2024-01-31 16:05:02,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6050228310502284 [2024-01-31 16:05:02,177 INFO L175 Difference]: Start difference. First operand has 243 places, 479 transitions, 10218 flow. Second operand 6 states and 265 transitions. [2024-01-31 16:05:02,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 524 transitions, 11780 flow [2024-01-31 16:05:02,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 524 transitions, 11511 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-01-31 16:05:02,806 INFO L231 Difference]: Finished difference. Result has 245 places, 486 transitions, 10438 flow [2024-01-31 16:05:02,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=9969, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=10438, PETRI_PLACES=245, PETRI_TRANSITIONS=486} [2024-01-31 16:05:02,807 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 168 predicate places. [2024-01-31 16:05:02,807 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 486 transitions, 10438 flow [2024-01-31 16:05:02,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:02,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:02,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:02,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-01-31 16:05:02,808 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:02,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:02,808 INFO L85 PathProgramCache]: Analyzing trace with hash -469505587, now seen corresponding path program 2 times [2024-01-31 16:05:02,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:02,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566199876] [2024-01-31 16:05:02,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:02,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:02,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:02,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:02,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:02,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566199876] [2024-01-31 16:05:02,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566199876] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:02,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:02,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:05:02,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192775559] [2024-01-31 16:05:02,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:02,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:05:02,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:02,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:05:02,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:05:02,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:05:02,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 486 transitions, 10438 flow. Second operand has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:02,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:02,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:05:02,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:04,348 INFO L124 PetriNetUnfolderBase]: 2928/5807 cut-off events. [2024-01-31 16:05:04,348 INFO L125 PetriNetUnfolderBase]: For 178380/179665 co-relation queries the response was YES. [2024-01-31 16:05:04,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45862 conditions, 5807 events. 2928/5807 cut-off events. For 178380/179665 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 45778 event pairs, 929 based on Foata normal form. 56/5544 useless extension candidates. Maximal degree in co-relation 45743. Up to 2856 conditions per place. [2024-01-31 16:05:04,421 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 306 selfloop transitions, 157 changer transitions 0/542 dead transitions. [2024-01-31 16:05:04,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 542 transitions, 12191 flow [2024-01-31 16:05:04,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:05:04,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:05:04,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 273 transitions. [2024-01-31 16:05:04,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6232876712328768 [2024-01-31 16:05:04,422 INFO L175 Difference]: Start difference. First operand has 245 places, 486 transitions, 10438 flow. Second operand 6 states and 273 transitions. [2024-01-31 16:05:04,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 542 transitions, 12191 flow [2024-01-31 16:05:05,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 542 transitions, 12010 flow, removed 14 selfloop flow, removed 2 redundant places. [2024-01-31 16:05:05,105 INFO L231 Difference]: Finished difference. Result has 250 places, 498 transitions, 10894 flow [2024-01-31 16:05:05,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10266, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=10894, PETRI_PLACES=250, PETRI_TRANSITIONS=498} [2024-01-31 16:05:05,106 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 173 predicate places. [2024-01-31 16:05:05,106 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 498 transitions, 10894 flow [2024-01-31 16:05:05,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:05,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:05,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:05,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-01-31 16:05:05,107 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:05,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:05,107 INFO L85 PathProgramCache]: Analyzing trace with hash 470658611, now seen corresponding path program 2 times [2024-01-31 16:05:05,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:05,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744047614] [2024-01-31 16:05:05,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:05,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:05,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:05,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:05,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:05,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744047614] [2024-01-31 16:05:05,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744047614] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:05,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:05,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:05,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999574989] [2024-01-31 16:05:05,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:05,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:05:05,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:05,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:05:05,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:05:05,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:05,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 498 transitions, 10894 flow. Second operand has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:05,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:05,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:05,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:07,334 INFO L124 PetriNetUnfolderBase]: 3588/6886 cut-off events. [2024-01-31 16:05:07,335 INFO L125 PetriNetUnfolderBase]: For 200631/201318 co-relation queries the response was YES. [2024-01-31 16:05:07,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53467 conditions, 6886 events. 3588/6886 cut-off events. For 200631/201318 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 51942 event pairs, 1048 based on Foata normal form. 147/6789 useless extension candidates. Maximal degree in co-relation 53346. Up to 2717 conditions per place. [2024-01-31 16:05:07,427 INFO L140 encePairwiseOnDemand]: 55/73 looper letters, 334 selfloop transitions, 203 changer transitions 2/581 dead transitions. [2024-01-31 16:05:07,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 581 transitions, 12801 flow [2024-01-31 16:05:07,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:05:07,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:05:07,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 300 transitions. [2024-01-31 16:05:07,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5870841487279843 [2024-01-31 16:05:07,428 INFO L175 Difference]: Start difference. First operand has 250 places, 498 transitions, 10894 flow. Second operand 7 states and 300 transitions. [2024-01-31 16:05:07,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 581 transitions, 12801 flow [2024-01-31 16:05:08,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 581 transitions, 12640 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-01-31 16:05:08,189 INFO L231 Difference]: Finished difference. Result has 256 places, 502 transitions, 11334 flow [2024-01-31 16:05:08,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10733, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11334, PETRI_PLACES=256, PETRI_TRANSITIONS=502} [2024-01-31 16:05:08,190 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 179 predicate places. [2024-01-31 16:05:08,190 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 502 transitions, 11334 flow [2024-01-31 16:05:08,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:08,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:08,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:08,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-01-31 16:05:08,190 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:08,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:08,191 INFO L85 PathProgramCache]: Analyzing trace with hash 387526347, now seen corresponding path program 3 times [2024-01-31 16:05:08,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:08,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29039160] [2024-01-31 16:05:08,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:08,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:08,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:08,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:08,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:08,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29039160] [2024-01-31 16:05:08,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29039160] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:08,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:08,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:08,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242410665] [2024-01-31 16:05:08,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:08,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:05:08,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:08,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:05:08,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:05:08,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:08,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 502 transitions, 11334 flow. Second operand has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:08,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:08,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:08,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:10,479 INFO L124 PetriNetUnfolderBase]: 3994/7838 cut-off events. [2024-01-31 16:05:10,479 INFO L125 PetriNetUnfolderBase]: For 226305/227180 co-relation queries the response was YES. [2024-01-31 16:05:10,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59993 conditions, 7838 events. 3994/7838 cut-off events. For 226305/227180 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 62187 event pairs, 1364 based on Foata normal form. 115/7670 useless extension candidates. Maximal degree in co-relation 59870. Up to 2749 conditions per place. [2024-01-31 16:05:10,590 INFO L140 encePairwiseOnDemand]: 55/73 looper letters, 383 selfloop transitions, 191 changer transitions 1/617 dead transitions. [2024-01-31 16:05:10,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 617 transitions, 13920 flow [2024-01-31 16:05:10,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:05:10,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:05:10,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 302 transitions. [2024-01-31 16:05:10,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5909980430528375 [2024-01-31 16:05:10,591 INFO L175 Difference]: Start difference. First operand has 256 places, 502 transitions, 11334 flow. Second operand 7 states and 302 transitions. [2024-01-31 16:05:10,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 617 transitions, 13920 flow [2024-01-31 16:05:11,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 617 transitions, 13494 flow, removed 42 selfloop flow, removed 6 redundant places. [2024-01-31 16:05:11,343 INFO L231 Difference]: Finished difference. Result has 260 places, 524 transitions, 11993 flow [2024-01-31 16:05:11,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=10965, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=11993, PETRI_PLACES=260, PETRI_TRANSITIONS=524} [2024-01-31 16:05:11,343 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 183 predicate places. [2024-01-31 16:05:11,343 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 524 transitions, 11993 flow [2024-01-31 16:05:11,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:11,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:11,344 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:11,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-01-31 16:05:11,344 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:11,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:11,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1181006579, now seen corresponding path program 1 times [2024-01-31 16:05:11,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:11,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195848321] [2024-01-31 16:05:11,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:11,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:11,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:11,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:11,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:11,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195848321] [2024-01-31 16:05:11,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195848321] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:11,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:11,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:05:11,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986888254] [2024-01-31 16:05:11,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:11,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:05:11,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:11,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:05:11,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:05:11,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:11,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 524 transitions, 11993 flow. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:11,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:11,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:11,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:13,607 INFO L124 PetriNetUnfolderBase]: 3980/7705 cut-off events. [2024-01-31 16:05:13,607 INFO L125 PetriNetUnfolderBase]: For 229185/230089 co-relation queries the response was YES. [2024-01-31 16:05:13,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60707 conditions, 7705 events. 3980/7705 cut-off events. For 229185/230089 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 60425 event pairs, 1584 based on Foata normal form. 87/7542 useless extension candidates. Maximal degree in co-relation 60582. Up to 4211 conditions per place. [2024-01-31 16:05:13,723 INFO L140 encePairwiseOnDemand]: 58/73 looper letters, 368 selfloop transitions, 163 changer transitions 0/573 dead transitions. [2024-01-31 16:05:13,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 573 transitions, 13653 flow [2024-01-31 16:05:13,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:05:13,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:05:13,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 258 transitions. [2024-01-31 16:05:13,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5048923679060665 [2024-01-31 16:05:13,724 INFO L175 Difference]: Start difference. First operand has 260 places, 524 transitions, 11993 flow. Second operand 7 states and 258 transitions. [2024-01-31 16:05:13,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 573 transitions, 13653 flow [2024-01-31 16:05:14,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 573 transitions, 13514 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-01-31 16:05:14,479 INFO L231 Difference]: Finished difference. Result has 264 places, 524 transitions, 12196 flow [2024-01-31 16:05:14,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=11860, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=12196, PETRI_PLACES=264, PETRI_TRANSITIONS=524} [2024-01-31 16:05:14,480 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 187 predicate places. [2024-01-31 16:05:14,480 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 524 transitions, 12196 flow [2024-01-31 16:05:14,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:14,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:14,481 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:14,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-01-31 16:05:14,481 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:14,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:14,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1180766639, now seen corresponding path program 2 times [2024-01-31 16:05:14,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:14,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122242753] [2024-01-31 16:05:14,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:14,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:14,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:14,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:14,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:14,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122242753] [2024-01-31 16:05:14,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122242753] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:14,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:14,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:05:14,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298235085] [2024-01-31 16:05:14,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:14,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:05:14,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:14,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:05:14,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:05:14,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:14,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 524 transitions, 12196 flow. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:14,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:14,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:14,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:17,118 INFO L124 PetriNetUnfolderBase]: 3996/7737 cut-off events. [2024-01-31 16:05:17,118 INFO L125 PetriNetUnfolderBase]: For 235595/236492 co-relation queries the response was YES. [2024-01-31 16:05:17,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61428 conditions, 7737 events. 3996/7737 cut-off events. For 235595/236492 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 60769 event pairs, 1583 based on Foata normal form. 85/7572 useless extension candidates. Maximal degree in co-relation 61303. Up to 4217 conditions per place. [2024-01-31 16:05:17,258 INFO L140 encePairwiseOnDemand]: 59/73 looper letters, 367 selfloop transitions, 180 changer transitions 0/589 dead transitions. [2024-01-31 16:05:17,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 589 transitions, 14237 flow [2024-01-31 16:05:17,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:05:17,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:05:17,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 266 transitions. [2024-01-31 16:05:17,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5205479452054794 [2024-01-31 16:05:17,259 INFO L175 Difference]: Start difference. First operand has 264 places, 524 transitions, 12196 flow. Second operand 7 states and 266 transitions. [2024-01-31 16:05:17,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 589 transitions, 14237 flow [2024-01-31 16:05:18,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 589 transitions, 13899 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-31 16:05:18,065 INFO L231 Difference]: Finished difference. Result has 266 places, 530 transitions, 12464 flow [2024-01-31 16:05:18,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=11866, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=12464, PETRI_PLACES=266, PETRI_TRANSITIONS=530} [2024-01-31 16:05:18,066 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 189 predicate places. [2024-01-31 16:05:18,066 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 530 transitions, 12464 flow [2024-01-31 16:05:18,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:18,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:18,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:18,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-01-31 16:05:18,066 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:18,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:18,067 INFO L85 PathProgramCache]: Analyzing trace with hash 954652949, now seen corresponding path program 3 times [2024-01-31 16:05:18,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:18,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136415529] [2024-01-31 16:05:18,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:18,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:18,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:18,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:18,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:18,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136415529] [2024-01-31 16:05:18,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136415529] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:18,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:18,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:05:18,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33232787] [2024-01-31 16:05:18,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:18,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:05:18,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:18,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:05:18,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:05:18,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:18,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 530 transitions, 12464 flow. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:18,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:18,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:18,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:20,389 INFO L124 PetriNetUnfolderBase]: 3993/7715 cut-off events. [2024-01-31 16:05:20,389 INFO L125 PetriNetUnfolderBase]: For 236366/237293 co-relation queries the response was YES. [2024-01-31 16:05:20,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61799 conditions, 7715 events. 3993/7715 cut-off events. For 236366/237293 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 60542 event pairs, 1397 based on Foata normal form. 91/7555 useless extension candidates. Maximal degree in co-relation 61672. Up to 4217 conditions per place. [2024-01-31 16:05:20,512 INFO L140 encePairwiseOnDemand]: 59/73 looper letters, 367 selfloop transitions, 182 changer transitions 0/591 dead transitions. [2024-01-31 16:05:20,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 591 transitions, 14419 flow [2024-01-31 16:05:20,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:05:20,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:05:20,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 262 transitions. [2024-01-31 16:05:20,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.512720156555773 [2024-01-31 16:05:20,513 INFO L175 Difference]: Start difference. First operand has 266 places, 530 transitions, 12464 flow. Second operand 7 states and 262 transitions. [2024-01-31 16:05:20,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 591 transitions, 14419 flow [2024-01-31 16:05:21,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 591 transitions, 14130 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-01-31 16:05:21,499 INFO L231 Difference]: Finished difference. Result has 270 places, 537 transitions, 12788 flow [2024-01-31 16:05:21,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12187, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=12788, PETRI_PLACES=270, PETRI_TRANSITIONS=537} [2024-01-31 16:05:21,499 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 193 predicate places. [2024-01-31 16:05:21,500 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 537 transitions, 12788 flow [2024-01-31 16:05:21,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:21,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:21,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:21,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-01-31 16:05:21,500 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:21,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:21,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1734751623, now seen corresponding path program 1 times [2024-01-31 16:05:21,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:21,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429467166] [2024-01-31 16:05:21,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:21,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:21,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:21,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:21,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:21,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429467166] [2024-01-31 16:05:21,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429467166] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:21,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:21,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 16:05:21,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674898736] [2024-01-31 16:05:21,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:21,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:05:21,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:21,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:05:21,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:05:21,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:05:21,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 537 transitions, 12788 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) [2024-01-31 16:05:21,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:21,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:05:21,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:23,782 INFO L124 PetriNetUnfolderBase]: 3298/6835 cut-off events. [2024-01-31 16:05:23,782 INFO L125 PetriNetUnfolderBase]: For 235893/237630 co-relation queries the response was YES. [2024-01-31 16:05:23,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56274 conditions, 6835 events. 3298/6835 cut-off events. For 235893/237630 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 58391 event pairs, 817 based on Foata normal form. 240/6695 useless extension candidates. Maximal degree in co-relation 56145. Up to 2996 conditions per place. [2024-01-31 16:05:23,886 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 367 selfloop transitions, 141 changer transitions 17/608 dead transitions. [2024-01-31 16:05:23,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 608 transitions, 15031 flow [2024-01-31 16:05:23,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 16:05:23,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 16:05:23,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 188 transitions. [2024-01-31 16:05:23,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6438356164383562 [2024-01-31 16:05:23,887 INFO L175 Difference]: Start difference. First operand has 270 places, 537 transitions, 12788 flow. Second operand 4 states and 188 transitions. [2024-01-31 16:05:23,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 608 transitions, 15031 flow [2024-01-31 16:05:24,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 608 transitions, 14813 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-01-31 16:05:24,615 INFO L231 Difference]: Finished difference. Result has 270 places, 550 transitions, 13274 flow [2024-01-31 16:05:24,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12593, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=537, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=13274, PETRI_PLACES=270, PETRI_TRANSITIONS=550} [2024-01-31 16:05:24,616 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 193 predicate places. [2024-01-31 16:05:24,616 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 550 transitions, 13274 flow [2024-01-31 16:05:24,616 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) [2024-01-31 16:05:24,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:24,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:24,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-01-31 16:05:24,616 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:24,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:24,617 INFO L85 PathProgramCache]: Analyzing trace with hash 744976323, now seen corresponding path program 2 times [2024-01-31 16:05:24,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:24,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425129358] [2024-01-31 16:05:24,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:24,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:24,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:24,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:24,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:24,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425129358] [2024-01-31 16:05:24,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425129358] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:24,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:24,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 16:05:24,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401549888] [2024-01-31 16:05:24,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:24,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 16:05:24,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:24,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 16:05:24,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-31 16:05:24,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:05:24,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 550 transitions, 13274 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) [2024-01-31 16:05:24,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:24,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:05:24,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:26,041 INFO L124 PetriNetUnfolderBase]: 2094/4339 cut-off events. [2024-01-31 16:05:26,042 INFO L125 PetriNetUnfolderBase]: For 207775/208689 co-relation queries the response was YES. [2024-01-31 16:05:26,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42373 conditions, 4339 events. 2094/4339 cut-off events. For 207775/208689 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 33786 event pairs, 495 based on Foata normal form. 248/4352 useless extension candidates. Maximal degree in co-relation 42243. Up to 2050 conditions per place. [2024-01-31 16:05:26,086 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 332 selfloop transitions, 123 changer transitions 24/558 dead transitions. [2024-01-31 16:05:26,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 558 transitions, 14384 flow [2024-01-31 16:05:26,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:05:26,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:05:26,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 209 transitions. [2024-01-31 16:05:26,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5726027397260274 [2024-01-31 16:05:26,087 INFO L175 Difference]: Start difference. First operand has 270 places, 550 transitions, 13274 flow. Second operand 5 states and 209 transitions. [2024-01-31 16:05:26,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 558 transitions, 14384 flow [2024-01-31 16:05:26,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 558 transitions, 13951 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-01-31 16:05:26,557 INFO L231 Difference]: Finished difference. Result has 270 places, 521 transitions, 12893 flow [2024-01-31 16:05:26,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12532, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=12893, PETRI_PLACES=270, PETRI_TRANSITIONS=521} [2024-01-31 16:05:26,558 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 193 predicate places. [2024-01-31 16:05:26,558 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 521 transitions, 12893 flow [2024-01-31 16:05:26,558 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) [2024-01-31 16:05:26,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:26,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:26,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-01-31 16:05:26,559 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:26,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:26,559 INFO L85 PathProgramCache]: Analyzing trace with hash 824020495, now seen corresponding path program 4 times [2024-01-31 16:05:26,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:26,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226614579] [2024-01-31 16:05:26,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:26,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:26,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:26,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:26,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:26,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226614579] [2024-01-31 16:05:26,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226614579] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:26,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:26,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:26,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687054092] [2024-01-31 16:05:26,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:26,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:05:26,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:26,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:05:26,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:05:26,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:26,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 521 transitions, 12893 flow. Second operand has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:26,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:26,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:26,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:28,701 INFO L124 PetriNetUnfolderBase]: 2570/5061 cut-off events. [2024-01-31 16:05:28,701 INFO L125 PetriNetUnfolderBase]: For 216116/216594 co-relation queries the response was YES. [2024-01-31 16:05:28,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47895 conditions, 5061 events. 2570/5061 cut-off events. For 216116/216594 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 37572 event pairs, 733 based on Foata normal form. 92/5043 useless extension candidates. Maximal degree in co-relation 47767. Up to 2578 conditions per place. [2024-01-31 16:05:28,786 INFO L140 encePairwiseOnDemand]: 58/73 looper letters, 388 selfloop transitions, 147 changer transitions 1/578 dead transitions. [2024-01-31 16:05:28,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 578 transitions, 14713 flow [2024-01-31 16:05:28,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:05:28,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:05:28,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 275 transitions. [2024-01-31 16:05:28,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4708904109589041 [2024-01-31 16:05:28,787 INFO L175 Difference]: Start difference. First operand has 270 places, 521 transitions, 12893 flow. Second operand 8 states and 275 transitions. [2024-01-31 16:05:28,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 578 transitions, 14713 flow [2024-01-31 16:05:29,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 578 transitions, 14180 flow, removed 20 selfloop flow, removed 10 redundant places. [2024-01-31 16:05:29,672 INFO L231 Difference]: Finished difference. Result has 268 places, 532 transitions, 13009 flow [2024-01-31 16:05:29,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12352, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13009, PETRI_PLACES=268, PETRI_TRANSITIONS=532} [2024-01-31 16:05:29,673 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 191 predicate places. [2024-01-31 16:05:29,674 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 532 transitions, 13009 flow [2024-01-31 16:05:29,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:29,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:29,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:29,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-01-31 16:05:29,674 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:29,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:29,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1020847325, now seen corresponding path program 1 times [2024-01-31 16:05:29,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:29,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982588375] [2024-01-31 16:05:29,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:29,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:29,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:29,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:29,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:29,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982588375] [2024-01-31 16:05:29,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982588375] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:29,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:29,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:29,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548401615] [2024-01-31 16:05:29,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:29,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:05:29,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:29,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:05:29,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:05:29,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:29,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 532 transitions, 13009 flow. Second operand has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:29,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:29,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:29,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:31,559 INFO L124 PetriNetUnfolderBase]: 2635/5217 cut-off events. [2024-01-31 16:05:31,560 INFO L125 PetriNetUnfolderBase]: For 219000/219846 co-relation queries the response was YES. [2024-01-31 16:05:31,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49442 conditions, 5217 events. 2635/5217 cut-off events. For 219000/219846 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 38832 event pairs, 753 based on Foata normal form. 28/5095 useless extension candidates. Maximal degree in co-relation 49316. Up to 3114 conditions per place. [2024-01-31 16:05:31,636 INFO L140 encePairwiseOnDemand]: 60/73 looper letters, 417 selfloop transitions, 117 changer transitions 1/580 dead transitions. [2024-01-31 16:05:31,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 580 transitions, 14708 flow [2024-01-31 16:05:31,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:05:31,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:05:31,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 247 transitions. [2024-01-31 16:05:31,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48336594911937375 [2024-01-31 16:05:31,637 INFO L175 Difference]: Start difference. First operand has 268 places, 532 transitions, 13009 flow. Second operand 7 states and 247 transitions. [2024-01-31 16:05:31,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 580 transitions, 14708 flow [2024-01-31 16:05:32,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 580 transitions, 14627 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-01-31 16:05:32,534 INFO L231 Difference]: Finished difference. Result has 273 places, 536 transitions, 13348 flow [2024-01-31 16:05:32,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12930, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=532, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=415, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=13348, PETRI_PLACES=273, PETRI_TRANSITIONS=536} [2024-01-31 16:05:32,535 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 196 predicate places. [2024-01-31 16:05:32,535 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 536 transitions, 13348 flow [2024-01-31 16:05:32,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:32,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:32,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:32,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-01-31 16:05:32,535 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:32,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:32,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1209901621, now seen corresponding path program 1 times [2024-01-31 16:05:32,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:32,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576952824] [2024-01-31 16:05:32,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:32,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:32,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:32,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:32,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:32,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576952824] [2024-01-31 16:05:32,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576952824] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:32,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:32,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:05:32,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963424225] [2024-01-31 16:05:32,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:32,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:05:32,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:32,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:05:32,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:05:32,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:05:32,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 536 transitions, 13348 flow. Second operand has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:32,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:32,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:05:32,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:34,083 INFO L124 PetriNetUnfolderBase]: 2016/4217 cut-off events. [2024-01-31 16:05:34,083 INFO L125 PetriNetUnfolderBase]: For 208233/209102 co-relation queries the response was YES. [2024-01-31 16:05:34,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41892 conditions, 4217 events. 2016/4217 cut-off events. For 208233/209102 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 33110 event pairs, 511 based on Foata normal form. 57/4067 useless extension candidates. Maximal degree in co-relation 41764. Up to 1558 conditions per place. [2024-01-31 16:05:34,136 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 319 selfloop transitions, 172 changer transitions 2/572 dead transitions. [2024-01-31 16:05:34,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 572 transitions, 14943 flow [2024-01-31 16:05:34,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:05:34,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:05:34,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 260 transitions. [2024-01-31 16:05:34,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.593607305936073 [2024-01-31 16:05:34,142 INFO L175 Difference]: Start difference. First operand has 273 places, 536 transitions, 13348 flow. Second operand 6 states and 260 transitions. [2024-01-31 16:05:34,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 572 transitions, 14943 flow [2024-01-31 16:05:34,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 572 transitions, 14875 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-31 16:05:34,768 INFO L231 Difference]: Finished difference. Result has 276 places, 538 transitions, 13720 flow [2024-01-31 16:05:34,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=13280, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=13720, PETRI_PLACES=276, PETRI_TRANSITIONS=538} [2024-01-31 16:05:34,768 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 199 predicate places. [2024-01-31 16:05:34,768 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 538 transitions, 13720 flow [2024-01-31 16:05:34,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:34,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:34,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:34,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-01-31 16:05:34,769 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:34,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:34,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1393481567, now seen corresponding path program 2 times [2024-01-31 16:05:34,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:34,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462851861] [2024-01-31 16:05:34,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:34,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:34,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:34,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:34,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:34,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462851861] [2024-01-31 16:05:34,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462851861] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:34,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:34,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:05:34,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426584732] [2024-01-31 16:05:34,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:34,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:05:34,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:34,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:05:34,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:05:34,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:05:34,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 538 transitions, 13720 flow. Second operand has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:34,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:34,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:05:34,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:36,153 INFO L124 PetriNetUnfolderBase]: 2011/4208 cut-off events. [2024-01-31 16:05:36,154 INFO L125 PetriNetUnfolderBase]: For 216566/217460 co-relation queries the response was YES. [2024-01-31 16:05:36,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42454 conditions, 4208 events. 2011/4208 cut-off events. For 216566/217460 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 33092 event pairs, 510 based on Foata normal form. 60/4062 useless extension candidates. Maximal degree in co-relation 42325. Up to 1560 conditions per place. [2024-01-31 16:05:36,207 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 312 selfloop transitions, 183 changer transitions 2/576 dead transitions. [2024-01-31 16:05:36,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 576 transitions, 15341 flow [2024-01-31 16:05:36,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:05:36,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:05:36,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 265 transitions. [2024-01-31 16:05:36,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6050228310502284 [2024-01-31 16:05:36,208 INFO L175 Difference]: Start difference. First operand has 276 places, 538 transitions, 13720 flow. Second operand 6 states and 265 transitions. [2024-01-31 16:05:36,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 576 transitions, 15341 flow [2024-01-31 16:05:36,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 576 transitions, 15092 flow, removed 20 selfloop flow, removed 2 redundant places. [2024-01-31 16:05:36,767 INFO L231 Difference]: Finished difference. Result has 281 places, 540 transitions, 13974 flow [2024-01-31 16:05:36,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=13472, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=538, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=13974, PETRI_PLACES=281, PETRI_TRANSITIONS=540} [2024-01-31 16:05:36,769 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 204 predicate places. [2024-01-31 16:05:36,769 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 540 transitions, 13974 flow [2024-01-31 16:05:36,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.0) internal successors, (198), 6 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:36,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:36,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:36,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-01-31 16:05:36,770 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:36,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:36,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1083601625, now seen corresponding path program 1 times [2024-01-31 16:05:36,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:36,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754329521] [2024-01-31 16:05:36,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:36,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:36,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:37,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:37,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:37,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754329521] [2024-01-31 16:05:37,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754329521] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:37,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:37,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:05:37,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050719999] [2024-01-31 16:05:37,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:37,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:05:37,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:37,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:05:37,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:05:37,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:37,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 540 transitions, 13974 flow. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:37,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:37,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:37,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:38,765 INFO L124 PetriNetUnfolderBase]: 2594/5153 cut-off events. [2024-01-31 16:05:38,766 INFO L125 PetriNetUnfolderBase]: For 240910/241743 co-relation queries the response was YES. [2024-01-31 16:05:38,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50924 conditions, 5153 events. 2594/5153 cut-off events. For 240910/241743 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 38244 event pairs, 434 based on Foata normal form. 16/5032 useless extension candidates. Maximal degree in co-relation 50793. Up to 1988 conditions per place. [2024-01-31 16:05:38,834 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 386 selfloop transitions, 156 changer transitions 2/589 dead transitions. [2024-01-31 16:05:38,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 589 transitions, 15717 flow [2024-01-31 16:05:38,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:05:38,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:05:38,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 244 transitions. [2024-01-31 16:05:38,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4774951076320939 [2024-01-31 16:05:38,835 INFO L175 Difference]: Start difference. First operand has 281 places, 540 transitions, 13974 flow. Second operand 7 states and 244 transitions. [2024-01-31 16:05:38,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 589 transitions, 15717 flow [2024-01-31 16:05:39,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 589 transitions, 15500 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-01-31 16:05:39,584 INFO L231 Difference]: Finished difference. Result has 286 places, 540 transitions, 14075 flow [2024-01-31 16:05:39,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=13757, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=14075, PETRI_PLACES=286, PETRI_TRANSITIONS=540} [2024-01-31 16:05:39,585 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 209 predicate places. [2024-01-31 16:05:39,585 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 540 transitions, 14075 flow [2024-01-31 16:05:39,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:39,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:39,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:39,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-01-31 16:05:39,586 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:39,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:39,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1091556137, now seen corresponding path program 2 times [2024-01-31 16:05:39,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:39,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402747472] [2024-01-31 16:05:39,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:39,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:39,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:39,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:39,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:39,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402747472] [2024-01-31 16:05:39,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402747472] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:39,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:39,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:05:39,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102714771] [2024-01-31 16:05:39,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:39,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:05:39,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:39,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:05:39,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:05:39,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:39,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 540 transitions, 14075 flow. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:39,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:39,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:39,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:41,506 INFO L124 PetriNetUnfolderBase]: 2585/5144 cut-off events. [2024-01-31 16:05:41,506 INFO L125 PetriNetUnfolderBase]: For 245370/246201 co-relation queries the response was YES. [2024-01-31 16:05:41,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50907 conditions, 5144 events. 2585/5144 cut-off events. For 245370/246201 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 38164 event pairs, 424 based on Foata normal form. 18/5027 useless extension candidates. Maximal degree in co-relation 50775. Up to 1984 conditions per place. [2024-01-31 16:05:41,577 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 379 selfloop transitions, 167 changer transitions 2/593 dead transitions. [2024-01-31 16:05:41,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 593 transitions, 15920 flow [2024-01-31 16:05:41,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:05:41,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:05:41,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 251 transitions. [2024-01-31 16:05:41,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4911937377690802 [2024-01-31 16:05:41,578 INFO L175 Difference]: Start difference. First operand has 286 places, 540 transitions, 14075 flow. Second operand 7 states and 251 transitions. [2024-01-31 16:05:41,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 593 transitions, 15920 flow [2024-01-31 16:05:42,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 593 transitions, 15691 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-01-31 16:05:42,497 INFO L231 Difference]: Finished difference. Result has 290 places, 540 transitions, 14187 flow [2024-01-31 16:05:42,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=13846, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=14187, PETRI_PLACES=290, PETRI_TRANSITIONS=540} [2024-01-31 16:05:42,498 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 213 predicate places. [2024-01-31 16:05:42,498 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 540 transitions, 14187 flow [2024-01-31 16:05:42,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:42,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:42,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:42,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-01-31 16:05:42,499 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:42,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:42,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1573632087, now seen corresponding path program 2 times [2024-01-31 16:05:42,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:42,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836786781] [2024-01-31 16:05:42,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:42,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:42,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:42,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:42,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:42,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836786781] [2024-01-31 16:05:42,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836786781] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:42,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:42,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:42,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898153006] [2024-01-31 16:05:42,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:42,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:05:42,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:42,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:05:42,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:05:42,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:42,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 540 transitions, 14187 flow. Second operand has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:42,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:42,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:42,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:44,381 INFO L124 PetriNetUnfolderBase]: 2652/5340 cut-off events. [2024-01-31 16:05:44,381 INFO L125 PetriNetUnfolderBase]: For 258324/259224 co-relation queries the response was YES. [2024-01-31 16:05:44,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52516 conditions, 5340 events. 2652/5340 cut-off events. For 258324/259224 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 40794 event pairs, 979 based on Foata normal form. 33/5236 useless extension candidates. Maximal degree in co-relation 52383. Up to 2722 conditions per place. [2024-01-31 16:05:44,444 INFO L140 encePairwiseOnDemand]: 57/73 looper letters, 381 selfloop transitions, 170 changer transitions 5/601 dead transitions. [2024-01-31 16:05:44,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 601 transitions, 16163 flow [2024-01-31 16:05:44,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:05:44,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:05:44,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 260 transitions. [2024-01-31 16:05:44,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5088062622309197 [2024-01-31 16:05:44,446 INFO L175 Difference]: Start difference. First operand has 290 places, 540 transitions, 14187 flow. Second operand 7 states and 260 transitions. [2024-01-31 16:05:44,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 601 transitions, 16163 flow [2024-01-31 16:05:45,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 601 transitions, 15868 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-01-31 16:05:45,210 INFO L231 Difference]: Finished difference. Result has 296 places, 549 transitions, 14569 flow [2024-01-31 16:05:45,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=13900, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=14569, PETRI_PLACES=296, PETRI_TRANSITIONS=549} [2024-01-31 16:05:45,211 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 219 predicate places. [2024-01-31 16:05:45,211 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 549 transitions, 14569 flow [2024-01-31 16:05:45,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:45,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:45,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:45,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-01-31 16:05:45,212 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:45,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:45,212 INFO L85 PathProgramCache]: Analyzing trace with hash -660232983, now seen corresponding path program 3 times [2024-01-31 16:05:45,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:45,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963200298] [2024-01-31 16:05:45,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:45,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:45,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:45,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:45,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:45,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963200298] [2024-01-31 16:05:45,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963200298] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:45,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:45,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:45,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192593872] [2024-01-31 16:05:45,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:45,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:05:45,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:45,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:05:45,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:05:45,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:45,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 549 transitions, 14569 flow. Second operand has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:45,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:45,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:45,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:47,080 INFO L124 PetriNetUnfolderBase]: 2680/5443 cut-off events. [2024-01-31 16:05:47,081 INFO L125 PetriNetUnfolderBase]: For 269035/269981 co-relation queries the response was YES. [2024-01-31 16:05:47,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54678 conditions, 5443 events. 2680/5443 cut-off events. For 269035/269981 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 42129 event pairs, 938 based on Foata normal form. 29/5330 useless extension candidates. Maximal degree in co-relation 54541. Up to 2743 conditions per place. [2024-01-31 16:05:47,135 INFO L140 encePairwiseOnDemand]: 58/73 looper letters, 359 selfloop transitions, 196 changer transitions 5/605 dead transitions. [2024-01-31 16:05:47,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 605 transitions, 16453 flow [2024-01-31 16:05:47,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:05:47,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:05:47,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 255 transitions. [2024-01-31 16:05:47,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49902152641878667 [2024-01-31 16:05:47,136 INFO L175 Difference]: Start difference. First operand has 296 places, 549 transitions, 14569 flow. Second operand 7 states and 255 transitions. [2024-01-31 16:05:47,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 605 transitions, 16453 flow [2024-01-31 16:05:47,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 605 transitions, 16311 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-01-31 16:05:47,779 INFO L231 Difference]: Finished difference. Result has 302 places, 561 transitions, 15173 flow [2024-01-31 16:05:47,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=14435, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=549, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15173, PETRI_PLACES=302, PETRI_TRANSITIONS=561} [2024-01-31 16:05:47,780 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 225 predicate places. [2024-01-31 16:05:47,780 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 561 transitions, 15173 flow [2024-01-31 16:05:47,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:47,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:47,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:47,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-01-31 16:05:47,781 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:47,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:47,781 INFO L85 PathProgramCache]: Analyzing trace with hash 845237835, now seen corresponding path program 4 times [2024-01-31 16:05:47,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:47,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173134949] [2024-01-31 16:05:47,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:47,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:47,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:47,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:47,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:47,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173134949] [2024-01-31 16:05:47,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173134949] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:47,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:47,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:47,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182472595] [2024-01-31 16:05:47,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:47,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:05:47,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:47,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:05:47,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:05:47,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:47,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 561 transitions, 15173 flow. Second operand has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:47,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:47,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:47,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:49,730 INFO L124 PetriNetUnfolderBase]: 2675/5453 cut-off events. [2024-01-31 16:05:49,731 INFO L125 PetriNetUnfolderBase]: For 283731/284684 co-relation queries the response was YES. [2024-01-31 16:05:49,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56459 conditions, 5453 events. 2675/5453 cut-off events. For 283731/284684 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 42367 event pairs, 1020 based on Foata normal form. 23/5334 useless extension candidates. Maximal degree in co-relation 56319. Up to 2745 conditions per place. [2024-01-31 16:05:49,824 INFO L140 encePairwiseOnDemand]: 58/73 looper letters, 360 selfloop transitions, 193 changer transitions 3/601 dead transitions. [2024-01-31 16:05:49,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 601 transitions, 16818 flow [2024-01-31 16:05:49,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:05:49,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:05:49,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 250 transitions. [2024-01-31 16:05:49,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4892367906066536 [2024-01-31 16:05:49,825 INFO L175 Difference]: Start difference. First operand has 302 places, 561 transitions, 15173 flow. Second operand 7 states and 250 transitions. [2024-01-31 16:05:49,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 601 transitions, 16818 flow [2024-01-31 16:05:50,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 601 transitions, 16466 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-01-31 16:05:50,743 INFO L231 Difference]: Finished difference. Result has 298 places, 564 transitions, 15304 flow [2024-01-31 16:05:50,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=14797, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=560, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=189, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15304, PETRI_PLACES=298, PETRI_TRANSITIONS=564} [2024-01-31 16:05:50,744 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 221 predicate places. [2024-01-31 16:05:50,744 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 564 transitions, 15304 flow [2024-01-31 16:05:50,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.75) internal successors, (182), 8 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:50,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:50,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:50,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-01-31 16:05:50,744 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:50,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:50,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1955130707, now seen corresponding path program 3 times [2024-01-31 16:05:50,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:50,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729909826] [2024-01-31 16:05:50,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:50,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:50,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:50,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:50,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:50,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729909826] [2024-01-31 16:05:50,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729909826] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:50,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:50,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:05:50,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196712738] [2024-01-31 16:05:50,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:50,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:05:50,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:50,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:05:50,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:05:50,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:50,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 564 transitions, 15304 flow. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:50,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:50,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:50,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:52,580 INFO L124 PetriNetUnfolderBase]: 2640/5413 cut-off events. [2024-01-31 16:05:52,580 INFO L125 PetriNetUnfolderBase]: For 287339/288257 co-relation queries the response was YES. [2024-01-31 16:05:52,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56727 conditions, 5413 events. 2640/5413 cut-off events. For 287339/288257 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 42055 event pairs, 698 based on Foata normal form. 29/5315 useless extension candidates. Maximal degree in co-relation 56593. Up to 2254 conditions per place. [2024-01-31 16:05:52,648 INFO L140 encePairwiseOnDemand]: 58/73 looper letters, 368 selfloop transitions, 195 changer transitions 2/610 dead transitions. [2024-01-31 16:05:52,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 610 transitions, 17161 flow [2024-01-31 16:05:52,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:05:52,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:05:52,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 251 transitions. [2024-01-31 16:05:52,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4911937377690802 [2024-01-31 16:05:52,649 INFO L175 Difference]: Start difference. First operand has 298 places, 564 transitions, 15304 flow. Second operand 7 states and 251 transitions. [2024-01-31 16:05:52,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 610 transitions, 17161 flow [2024-01-31 16:05:53,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 610 transitions, 16868 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-01-31 16:05:53,467 INFO L231 Difference]: Finished difference. Result has 301 places, 564 transitions, 15411 flow [2024-01-31 16:05:53,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=15011, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=195, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15411, PETRI_PLACES=301, PETRI_TRANSITIONS=564} [2024-01-31 16:05:53,467 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 224 predicate places. [2024-01-31 16:05:53,467 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 564 transitions, 15411 flow [2024-01-31 16:05:53,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:53,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:53,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:53,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-01-31 16:05:53,468 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:53,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:53,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1410467301, now seen corresponding path program 4 times [2024-01-31 16:05:53,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:53,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130771204] [2024-01-31 16:05:53,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:53,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:53,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:53,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:53,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:53,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130771204] [2024-01-31 16:05:53,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130771204] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:53,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:53,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:05:53,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585511429] [2024-01-31 16:05:53,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:53,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:05:53,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:53,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:05:53,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:05:53,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:53,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 564 transitions, 15411 flow. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:53,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:53,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:53,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:55,385 INFO L124 PetriNetUnfolderBase]: 2658/5442 cut-off events. [2024-01-31 16:05:55,385 INFO L125 PetriNetUnfolderBase]: For 290932/291858 co-relation queries the response was YES. [2024-01-31 16:05:55,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57496 conditions, 5442 events. 2658/5442 cut-off events. For 290932/291858 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 42312 event pairs, 692 based on Foata normal form. 31/5344 useless extension candidates. Maximal degree in co-relation 57361. Up to 2262 conditions per place. [2024-01-31 16:05:55,443 INFO L140 encePairwiseOnDemand]: 59/73 looper letters, 369 selfloop transitions, 205 changer transitions 2/621 dead transitions. [2024-01-31 16:05:55,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 621 transitions, 17572 flow [2024-01-31 16:05:55,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:05:55,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:05:55,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 258 transitions. [2024-01-31 16:05:55,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5048923679060665 [2024-01-31 16:05:55,444 INFO L175 Difference]: Start difference. First operand has 301 places, 564 transitions, 15411 flow. Second operand 7 states and 258 transitions. [2024-01-31 16:05:55,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 621 transitions, 17572 flow [2024-01-31 16:05:56,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 621 transitions, 17193 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-01-31 16:05:56,165 INFO L231 Difference]: Finished difference. Result has 303 places, 569 transitions, 15683 flow [2024-01-31 16:05:56,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=15038, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=200, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=15683, PETRI_PLACES=303, PETRI_TRANSITIONS=569} [2024-01-31 16:05:56,166 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 226 predicate places. [2024-01-31 16:05:56,166 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 569 transitions, 15683 flow [2024-01-31 16:05:56,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:56,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:56,166 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:56,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-01-31 16:05:56,166 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:56,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:56,167 INFO L85 PathProgramCache]: Analyzing trace with hash 296701621, now seen corresponding path program 5 times [2024-01-31 16:05:56,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:56,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621668446] [2024-01-31 16:05:56,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:56,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:56,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:56,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:56,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:56,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621668446] [2024-01-31 16:05:56,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621668446] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:56,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:56,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:05:56,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443774675] [2024-01-31 16:05:56,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:56,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:05:56,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:56,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:05:56,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:05:56,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:56,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 569 transitions, 15683 flow. Second operand has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:56,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:56,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:56,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:05:57,933 INFO L124 PetriNetUnfolderBase]: 2662/5447 cut-off events. [2024-01-31 16:05:57,933 INFO L125 PetriNetUnfolderBase]: For 294217/295138 co-relation queries the response was YES. [2024-01-31 16:05:57,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57993 conditions, 5447 events. 2662/5447 cut-off events. For 294217/295138 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 42359 event pairs, 689 based on Foata normal form. 25/5343 useless extension candidates. Maximal degree in co-relation 57857. Up to 2264 conditions per place. [2024-01-31 16:05:58,004 INFO L140 encePairwiseOnDemand]: 59/73 looper letters, 367 selfloop transitions, 207 changer transitions 2/621 dead transitions. [2024-01-31 16:05:58,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 621 transitions, 17736 flow [2024-01-31 16:05:58,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:05:58,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:05:58,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 253 transitions. [2024-01-31 16:05:58,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49510763209393344 [2024-01-31 16:05:58,005 INFO L175 Difference]: Start difference. First operand has 303 places, 569 transitions, 15683 flow. Second operand 7 states and 253 transitions. [2024-01-31 16:05:58,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 621 transitions, 17736 flow [2024-01-31 16:05:58,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 621 transitions, 17452 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-01-31 16:05:58,851 INFO L231 Difference]: Finished difference. Result has 308 places, 575 transitions, 16070 flow [2024-01-31 16:05:58,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=15404, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=569, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=201, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=16070, PETRI_PLACES=308, PETRI_TRANSITIONS=575} [2024-01-31 16:05:58,851 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 231 predicate places. [2024-01-31 16:05:58,851 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 575 transitions, 16070 flow [2024-01-31 16:05:58,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.0) internal successors, (161), 7 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:58,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:05:58,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:05:58,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-01-31 16:05:58,852 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:05:58,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:05:58,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1744113858, now seen corresponding path program 1 times [2024-01-31 16:05:58,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:05:58,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364599115] [2024-01-31 16:05:58,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:05:58,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:05:58,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:05:58,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:05:58,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:05:58,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364599115] [2024-01-31 16:05:58,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364599115] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:05:58,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:05:58,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:05:58,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395567112] [2024-01-31 16:05:58,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:05:58,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:05:58,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:05:58,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:05:58,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:05:59,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:05:59,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 575 transitions, 16070 flow. Second operand has 8 states, 8 states have (on average 23.0) internal successors, (184), 8 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:05:59,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:05:59,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:05:59,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:00,746 INFO L124 PetriNetUnfolderBase]: 2643/5413 cut-off events. [2024-01-31 16:06:00,746 INFO L125 PetriNetUnfolderBase]: For 308079/308864 co-relation queries the response was YES. [2024-01-31 16:06:00,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58462 conditions, 5413 events. 2643/5413 cut-off events. For 308079/308864 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 42256 event pairs, 970 based on Foata normal form. 79/5368 useless extension candidates. Maximal degree in co-relation 58324. Up to 2530 conditions per place. [2024-01-31 16:06:00,813 INFO L140 encePairwiseOnDemand]: 58/73 looper letters, 384 selfloop transitions, 182 changer transitions 0/611 dead transitions. [2024-01-31 16:06:00,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 611 transitions, 17666 flow [2024-01-31 16:06:00,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:06:00,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:06:00,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 242 transitions. [2024-01-31 16:06:00,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4735812133072407 [2024-01-31 16:06:00,815 INFO L175 Difference]: Start difference. First operand has 308 places, 575 transitions, 16070 flow. Second operand 7 states and 242 transitions. [2024-01-31 16:06:00,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 611 transitions, 17666 flow [2024-01-31 16:06:01,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 611 transitions, 17409 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-01-31 16:06:01,625 INFO L231 Difference]: Finished difference. Result has 310 places, 577 transitions, 16238 flow [2024-01-31 16:06:01,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=15817, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=575, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=16238, PETRI_PLACES=310, PETRI_TRANSITIONS=577} [2024-01-31 16:06:01,625 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 233 predicate places. [2024-01-31 16:06:01,626 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 577 transitions, 16238 flow [2024-01-31 16:06:01,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.0) internal successors, (184), 8 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:01,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:01,626 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:01,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-01-31 16:06:01,626 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:01,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:01,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1471518230, now seen corresponding path program 1 times [2024-01-31 16:06:01,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:01,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89370947] [2024-01-31 16:06:01,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:01,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:01,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:01,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:01,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:01,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89370947] [2024-01-31 16:06:01,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89370947] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:01,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:01,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:06:01,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598681429] [2024-01-31 16:06:01,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:01,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:06:01,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:01,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:06:01,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:06:01,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:06:01,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 577 transitions, 16238 flow. Second operand has 6 states, 6 states have (on average 33.166666666666664) internal successors, (199), 6 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:01,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:01,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:06:01,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:03,176 INFO L124 PetriNetUnfolderBase]: 2051/4458 cut-off events. [2024-01-31 16:06:03,176 INFO L125 PetriNetUnfolderBase]: For 280909/282132 co-relation queries the response was YES. [2024-01-31 16:06:03,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49229 conditions, 4458 events. 2051/4458 cut-off events. For 280909/282132 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 36596 event pairs, 499 based on Foata normal form. 55/4291 useless extension candidates. Maximal degree in co-relation 49092. Up to 1826 conditions per place. [2024-01-31 16:06:03,242 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 338 selfloop transitions, 192 changer transitions 2/614 dead transitions. [2024-01-31 16:06:03,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 614 transitions, 17941 flow [2024-01-31 16:06:03,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:06:03,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:06:03,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 265 transitions. [2024-01-31 16:06:03,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6050228310502284 [2024-01-31 16:06:03,244 INFO L175 Difference]: Start difference. First operand has 310 places, 577 transitions, 16238 flow. Second operand 6 states and 265 transitions. [2024-01-31 16:06:03,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 614 transitions, 17941 flow [2024-01-31 16:06:03,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 614 transitions, 17520 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-01-31 16:06:03,924 INFO L231 Difference]: Finished difference. Result has 310 places, 577 transitions, 16212 flow [2024-01-31 16:06:03,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=15817, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=577, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=192, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=16212, PETRI_PLACES=310, PETRI_TRANSITIONS=577} [2024-01-31 16:06:03,924 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 233 predicate places. [2024-01-31 16:06:03,925 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 577 transitions, 16212 flow [2024-01-31 16:06:03,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.166666666666664) internal successors, (199), 6 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:03,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:03,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:03,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-01-31 16:06:03,925 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:03,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:03,926 INFO L85 PathProgramCache]: Analyzing trace with hash 326501304, now seen corresponding path program 2 times [2024-01-31 16:06:03,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:03,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905474580] [2024-01-31 16:06:03,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:03,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:03,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:04,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:04,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:04,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905474580] [2024-01-31 16:06:04,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905474580] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:04,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:04,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:06:04,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526802254] [2024-01-31 16:06:04,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:04,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:06:04,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:04,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:06:04,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:06:04,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:06:04,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 577 transitions, 16212 flow. Second operand has 8 states, 8 states have (on average 23.0) internal successors, (184), 8 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:04,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:04,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:06:04,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:05,928 INFO L124 PetriNetUnfolderBase]: 2643/5432 cut-off events. [2024-01-31 16:06:05,928 INFO L125 PetriNetUnfolderBase]: For 318970/319753 co-relation queries the response was YES. [2024-01-31 16:06:05,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59013 conditions, 5432 events. 2643/5432 cut-off events. For 318970/319753 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 42695 event pairs, 940 based on Foata normal form. 81/5389 useless extension candidates. Maximal degree in co-relation 58876. Up to 2492 conditions per place. [2024-01-31 16:06:06,031 INFO L140 encePairwiseOnDemand]: 55/73 looper letters, 364 selfloop transitions, 243 changer transitions 0/652 dead transitions. [2024-01-31 16:06:06,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 652 transitions, 18817 flow [2024-01-31 16:06:06,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:06:06,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:06:06,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 291 transitions. [2024-01-31 16:06:06,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4982876712328767 [2024-01-31 16:06:06,032 INFO L175 Difference]: Start difference. First operand has 310 places, 577 transitions, 16212 flow. Second operand 8 states and 291 transitions. [2024-01-31 16:06:06,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 652 transitions, 18817 flow [2024-01-31 16:06:07,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 652 transitions, 18396 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-01-31 16:06:07,130 INFO L231 Difference]: Finished difference. Result has 314 places, 596 transitions, 17013 flow [2024-01-31 16:06:07,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=15804, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=577, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=224, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17013, PETRI_PLACES=314, PETRI_TRANSITIONS=596} [2024-01-31 16:06:07,131 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 237 predicate places. [2024-01-31 16:06:07,131 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 596 transitions, 17013 flow [2024-01-31 16:06:07,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.0) internal successors, (184), 8 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:07,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:07,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:07,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-01-31 16:06:07,132 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:07,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:07,133 INFO L85 PathProgramCache]: Analyzing trace with hash 845385366, now seen corresponding path program 2 times [2024-01-31 16:06:07,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:07,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627996273] [2024-01-31 16:06:07,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:07,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:07,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:07,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:07,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:07,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627996273] [2024-01-31 16:06:07,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627996273] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:07,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:07,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:06:07,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198159026] [2024-01-31 16:06:07,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:07,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:06:07,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:07,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:06:07,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:06:07,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:06:07,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 596 transitions, 17013 flow. Second operand has 6 states, 6 states have (on average 33.166666666666664) internal successors, (199), 6 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:07,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:07,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:06:07,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:08,696 INFO L124 PetriNetUnfolderBase]: 2050/4509 cut-off events. [2024-01-31 16:06:08,696 INFO L125 PetriNetUnfolderBase]: For 287165/288336 co-relation queries the response was YES. [2024-01-31 16:06:08,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50450 conditions, 4509 events. 2050/4509 cut-off events. For 287165/288336 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 37258 event pairs, 359 based on Foata normal form. 41/4306 useless extension candidates. Maximal degree in co-relation 50311. Up to 1863 conditions per place. [2024-01-31 16:06:08,755 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 369 selfloop transitions, 176 changer transitions 2/629 dead transitions. [2024-01-31 16:06:08,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 629 transitions, 18618 flow [2024-01-31 16:06:08,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:06:08,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:06:08,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 255 transitions. [2024-01-31 16:06:08,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5821917808219178 [2024-01-31 16:06:08,756 INFO L175 Difference]: Start difference. First operand has 314 places, 596 transitions, 17013 flow. Second operand 6 states and 255 transitions. [2024-01-31 16:06:08,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 629 transitions, 18618 flow [2024-01-31 16:06:09,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 629 transitions, 18305 flow, removed 17 selfloop flow, removed 4 redundant places. [2024-01-31 16:06:09,449 INFO L231 Difference]: Finished difference. Result has 317 places, 600 transitions, 17225 flow [2024-01-31 16:06:09,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=16712, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=596, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=17225, PETRI_PLACES=317, PETRI_TRANSITIONS=600} [2024-01-31 16:06:09,449 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 240 predicate places. [2024-01-31 16:06:09,449 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 600 transitions, 17225 flow [2024-01-31 16:06:09,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.166666666666664) internal successors, (199), 6 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:09,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:09,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:09,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-01-31 16:06:09,450 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:09,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:09,450 INFO L85 PathProgramCache]: Analyzing trace with hash -572957364, now seen corresponding path program 3 times [2024-01-31 16:06:09,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:09,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303495486] [2024-01-31 16:06:09,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:09,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:09,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:09,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:09,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:09,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303495486] [2024-01-31 16:06:09,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303495486] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:09,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:09,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:06:09,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407443339] [2024-01-31 16:06:09,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:09,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:06:09,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:09,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:06:09,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:06:09,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:06:09,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 600 transitions, 17225 flow. Second operand has 8 states, 8 states have (on average 23.0) internal successors, (184), 8 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:09,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:09,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:06:09,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:11,213 INFO L124 PetriNetUnfolderBase]: 2618/5371 cut-off events. [2024-01-31 16:06:11,213 INFO L125 PetriNetUnfolderBase]: For 318437/319220 co-relation queries the response was YES. [2024-01-31 16:06:11,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59089 conditions, 5371 events. 2618/5371 cut-off events. For 318437/319220 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 42047 event pairs, 865 based on Foata normal form. 87/5334 useless extension candidates. Maximal degree in co-relation 58948. Up to 2439 conditions per place. [2024-01-31 16:06:11,282 INFO L140 encePairwiseOnDemand]: 59/73 looper letters, 398 selfloop transitions, 199 changer transitions 1/643 dead transitions. [2024-01-31 16:06:11,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 643 transitions, 18958 flow [2024-01-31 16:06:11,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:06:11,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:06:11,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 246 transitions. [2024-01-31 16:06:11,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48140900195694714 [2024-01-31 16:06:11,283 INFO L175 Difference]: Start difference. First operand has 317 places, 600 transitions, 17225 flow. Second operand 7 states and 246 transitions. [2024-01-31 16:06:11,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 643 transitions, 18958 flow [2024-01-31 16:06:12,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 643 transitions, 18527 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-01-31 16:06:12,149 INFO L231 Difference]: Finished difference. Result has 315 places, 602 transitions, 17293 flow [2024-01-31 16:06:12,150 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=16766, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=196, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=17293, PETRI_PLACES=315, PETRI_TRANSITIONS=602} [2024-01-31 16:06:12,150 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 238 predicate places. [2024-01-31 16:06:12,150 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 602 transitions, 17293 flow [2024-01-31 16:06:12,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.0) internal successors, (184), 8 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:12,151 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:12,151 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:12,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-01-31 16:06:12,151 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:12,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:12,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1821223408, now seen corresponding path program 3 times [2024-01-31 16:06:12,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:12,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093266101] [2024-01-31 16:06:12,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:12,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:12,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:12,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:12,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:12,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093266101] [2024-01-31 16:06:12,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093266101] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:12,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:12,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:06:12,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86524749] [2024-01-31 16:06:12,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:12,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:06:12,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:12,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:06:12,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:06:12,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:06:12,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 602 transitions, 17293 flow. Second operand has 6 states, 6 states have (on average 33.166666666666664) internal successors, (199), 6 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:12,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:12,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:06:12,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:13,879 INFO L124 PetriNetUnfolderBase]: 2147/4677 cut-off events. [2024-01-31 16:06:13,879 INFO L125 PetriNetUnfolderBase]: For 305866/307181 co-relation queries the response was YES. [2024-01-31 16:06:13,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52057 conditions, 4677 events. 2147/4677 cut-off events. For 305866/307181 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 38799 event pairs, 509 based on Foata normal form. 48/4519 useless extension candidates. Maximal degree in co-relation 51919. Up to 1900 conditions per place. [2024-01-31 16:06:13,945 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 373 selfloop transitions, 193 changer transitions 2/651 dead transitions. [2024-01-31 16:06:13,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 651 transitions, 19274 flow [2024-01-31 16:06:13,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:06:13,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:06:13,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 266 transitions. [2024-01-31 16:06:13,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6073059360730594 [2024-01-31 16:06:13,946 INFO L175 Difference]: Start difference. First operand has 315 places, 602 transitions, 17293 flow. Second operand 6 states and 266 transitions. [2024-01-31 16:06:13,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 651 transitions, 19274 flow [2024-01-31 16:06:14,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 651 transitions, 18880 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-01-31 16:06:14,773 INFO L231 Difference]: Finished difference. Result has 317 places, 607 transitions, 17403 flow [2024-01-31 16:06:14,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=16899, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=602, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=17403, PETRI_PLACES=317, PETRI_TRANSITIONS=607} [2024-01-31 16:06:14,773 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 240 predicate places. [2024-01-31 16:06:14,774 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 607 transitions, 17403 flow [2024-01-31 16:06:14,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.166666666666664) internal successors, (199), 6 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:14,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:14,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:14,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-01-31 16:06:14,774 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:14,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:14,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1415993276, now seen corresponding path program 4 times [2024-01-31 16:06:14,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:14,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426138522] [2024-01-31 16:06:14,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:14,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:14,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:14,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:14,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:14,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426138522] [2024-01-31 16:06:14,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426138522] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:14,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:14,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:06:14,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810844150] [2024-01-31 16:06:14,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:14,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:06:14,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:14,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:06:14,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:06:14,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:06:14,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 607 transitions, 17403 flow. Second operand has 6 states, 6 states have (on average 33.166666666666664) internal successors, (199), 6 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:14,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:14,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:06:14,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:16,499 INFO L124 PetriNetUnfolderBase]: 2181/4756 cut-off events. [2024-01-31 16:06:16,499 INFO L125 PetriNetUnfolderBase]: For 300888/302181 co-relation queries the response was YES. [2024-01-31 16:06:16,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52977 conditions, 4756 events. 2181/4756 cut-off events. For 300888/302181 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 39540 event pairs, 504 based on Foata normal form. 38/4593 useless extension candidates. Maximal degree in co-relation 52837. Up to 1916 conditions per place. [2024-01-31 16:06:16,593 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 354 selfloop transitions, 213 changer transitions 2/652 dead transitions. [2024-01-31 16:06:16,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 652 transitions, 19264 flow [2024-01-31 16:06:16,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:06:16,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:06:16,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 266 transitions. [2024-01-31 16:06:16,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6073059360730594 [2024-01-31 16:06:16,594 INFO L175 Difference]: Start difference. First operand has 317 places, 607 transitions, 17403 flow. Second operand 6 states and 266 transitions. [2024-01-31 16:06:16,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 652 transitions, 19264 flow [2024-01-31 16:06:17,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 652 transitions, 19126 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-01-31 16:06:17,669 INFO L231 Difference]: Finished difference. Result has 323 places, 610 transitions, 17861 flow [2024-01-31 16:06:17,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=17267, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=210, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=17861, PETRI_PLACES=323, PETRI_TRANSITIONS=610} [2024-01-31 16:06:17,670 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 246 predicate places. [2024-01-31 16:06:17,670 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 610 transitions, 17861 flow [2024-01-31 16:06:17,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.166666666666664) internal successors, (199), 6 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:17,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:17,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:17,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-01-31 16:06:17,670 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:17,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:17,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1820829480, now seen corresponding path program 5 times [2024-01-31 16:06:17,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:17,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694453888] [2024-01-31 16:06:17,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:17,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:17,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:17,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:17,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:17,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694453888] [2024-01-31 16:06:17,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694453888] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:17,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:17,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:06:17,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54346638] [2024-01-31 16:06:17,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:17,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:06:17,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:17,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:06:17,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:06:17,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:06:17,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 610 transitions, 17861 flow. Second operand has 6 states, 6 states have (on average 33.166666666666664) internal successors, (199), 6 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:17,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:17,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:06:17,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:19,542 INFO L124 PetriNetUnfolderBase]: 2157/4684 cut-off events. [2024-01-31 16:06:19,543 INFO L125 PetriNetUnfolderBase]: For 321897/323183 co-relation queries the response was YES. [2024-01-31 16:06:19,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52775 conditions, 4684 events. 2157/4684 cut-off events. For 321897/323183 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 38835 event pairs, 499 based on Foata normal form. 59/4498 useless extension candidates. Maximal degree in co-relation 52632. Up to 1920 conditions per place. [2024-01-31 16:06:19,733 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 375 selfloop transitions, 192 changer transitions 2/652 dead transitions. [2024-01-31 16:06:19,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 652 transitions, 19728 flow [2024-01-31 16:06:19,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:06:19,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:06:19,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 264 transitions. [2024-01-31 16:06:19,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6027397260273972 [2024-01-31 16:06:19,734 INFO L175 Difference]: Start difference. First operand has 323 places, 610 transitions, 17861 flow. Second operand 6 states and 264 transitions. [2024-01-31 16:06:19,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 652 transitions, 19728 flow [2024-01-31 16:06:20,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 652 transitions, 19471 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-01-31 16:06:20,504 INFO L231 Difference]: Finished difference. Result has 327 places, 610 transitions, 17995 flow [2024-01-31 16:06:20,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=17604, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=610, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=192, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=17995, PETRI_PLACES=327, PETRI_TRANSITIONS=610} [2024-01-31 16:06:20,505 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 250 predicate places. [2024-01-31 16:06:20,505 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 610 transitions, 17995 flow [2024-01-31 16:06:20,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.166666666666664) internal successors, (199), 6 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:20,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:20,505 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:20,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-01-31 16:06:20,506 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:20,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:20,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1676301652, now seen corresponding path program 1 times [2024-01-31 16:06:20,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:20,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084152064] [2024-01-31 16:06:20,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:20,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:20,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:20,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:20,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:20,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084152064] [2024-01-31 16:06:20,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084152064] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:20,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:20,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:06:20,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594978379] [2024-01-31 16:06:20,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:20,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:06:20,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:20,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:06:20,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:06:20,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:06:20,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 610 transitions, 17995 flow. Second operand has 6 states, 6 states have (on average 33.166666666666664) internal successors, (199), 6 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:20,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:20,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:06:20,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:22,354 INFO L124 PetriNetUnfolderBase]: 2152/4664 cut-off events. [2024-01-31 16:06:22,354 INFO L125 PetriNetUnfolderBase]: For 323353/324619 co-relation queries the response was YES. [2024-01-31 16:06:22,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52733 conditions, 4664 events. 2152/4664 cut-off events. For 323353/324619 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 38607 event pairs, 485 based on Foata normal form. 46/4462 useless extension candidates. Maximal degree in co-relation 52589. Up to 1922 conditions per place. [2024-01-31 16:06:22,426 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 356 selfloop transitions, 206 changer transitions 2/647 dead transitions. [2024-01-31 16:06:22,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 647 transitions, 19733 flow [2024-01-31 16:06:22,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:06:22,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:06:22,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 261 transitions. [2024-01-31 16:06:22,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5958904109589042 [2024-01-31 16:06:22,427 INFO L175 Difference]: Start difference. First operand has 327 places, 610 transitions, 17995 flow. Second operand 6 states and 261 transitions. [2024-01-31 16:06:22,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 647 transitions, 19733 flow [2024-01-31 16:06:23,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 647 transitions, 19387 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-01-31 16:06:23,282 INFO L231 Difference]: Finished difference. Result has 330 places, 611 transitions, 18095 flow [2024-01-31 16:06:23,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=17651, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=610, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=205, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=18095, PETRI_PLACES=330, PETRI_TRANSITIONS=611} [2024-01-31 16:06:23,283 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 253 predicate places. [2024-01-31 16:06:23,283 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 611 transitions, 18095 flow [2024-01-31 16:06:23,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.166666666666664) internal successors, (199), 6 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:23,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:23,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:23,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-01-31 16:06:23,284 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:23,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:23,284 INFO L85 PathProgramCache]: Analyzing trace with hash -639856116, now seen corresponding path program 1 times [2024-01-31 16:06:23,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:23,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759863321] [2024-01-31 16:06:23,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:23,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:23,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:23,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:23,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:23,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759863321] [2024-01-31 16:06:23,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759863321] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:23,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:23,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:06:23,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501532439] [2024-01-31 16:06:23,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:23,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:06:23,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:23,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:06:23,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:06:23,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:06:23,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 611 transitions, 18095 flow. Second operand has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:23,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:23,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:06:23,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:25,489 INFO L124 PetriNetUnfolderBase]: 2682/5507 cut-off events. [2024-01-31 16:06:25,489 INFO L125 PetriNetUnfolderBase]: For 342673/343418 co-relation queries the response was YES. [2024-01-31 16:06:25,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60522 conditions, 5507 events. 2682/5507 cut-off events. For 342673/343418 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 43369 event pairs, 393 based on Foata normal form. 66/5454 useless extension candidates. Maximal degree in co-relation 60376. Up to 2329 conditions per place. [2024-01-31 16:06:25,554 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 382 selfloop transitions, 225 changer transitions 2/654 dead transitions. [2024-01-31 16:06:25,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 654 transitions, 19961 flow [2024-01-31 16:06:25,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:06:25,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:06:25,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 248 transitions. [2024-01-31 16:06:25,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48532289628180036 [2024-01-31 16:06:25,555 INFO L175 Difference]: Start difference. First operand has 330 places, 611 transitions, 18095 flow. Second operand 7 states and 248 transitions. [2024-01-31 16:06:25,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 654 transitions, 19961 flow [2024-01-31 16:06:26,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 654 transitions, 19503 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-31 16:06:26,445 INFO L231 Difference]: Finished difference. Result has 333 places, 611 transitions, 18144 flow [2024-01-31 16:06:26,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=17637, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=611, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=225, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=18144, PETRI_PLACES=333, PETRI_TRANSITIONS=611} [2024-01-31 16:06:26,446 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 256 predicate places. [2024-01-31 16:06:26,446 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 611 transitions, 18144 flow [2024-01-31 16:06:26,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:26,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:26,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:26,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-01-31 16:06:26,447 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:26,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:26,447 INFO L85 PathProgramCache]: Analyzing trace with hash -640230906, now seen corresponding path program 2 times [2024-01-31 16:06:26,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:26,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409904550] [2024-01-31 16:06:26,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:26,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:26,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:26,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:26,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:26,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409904550] [2024-01-31 16:06:26,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409904550] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:26,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:26,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:06:26,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50886293] [2024-01-31 16:06:26,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:26,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:06:26,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:26,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:06:26,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:06:26,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:06:26,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 611 transitions, 18144 flow. Second operand has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:26,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:26,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:06:26,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:28,330 INFO L124 PetriNetUnfolderBase]: 2668/5481 cut-off events. [2024-01-31 16:06:28,330 INFO L125 PetriNetUnfolderBase]: For 343674/344431 co-relation queries the response was YES. [2024-01-31 16:06:28,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60700 conditions, 5481 events. 2668/5481 cut-off events. For 343674/344431 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 43102 event pairs, 400 based on Foata normal form. 58/5414 useless extension candidates. Maximal degree in co-relation 60554. Up to 2323 conditions per place. [2024-01-31 16:06:28,406 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 398 selfloop transitions, 209 changer transitions 2/654 dead transitions. [2024-01-31 16:06:28,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 654 transitions, 20016 flow [2024-01-31 16:06:28,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:06:28,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:06:28,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 246 transitions. [2024-01-31 16:06:28,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48140900195694714 [2024-01-31 16:06:28,407 INFO L175 Difference]: Start difference. First operand has 333 places, 611 transitions, 18144 flow. Second operand 7 states and 246 transitions. [2024-01-31 16:06:28,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 654 transitions, 20016 flow [2024-01-31 16:06:29,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 654 transitions, 19564 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-31 16:06:29,386 INFO L231 Difference]: Finished difference. Result has 334 places, 611 transitions, 18123 flow [2024-01-31 16:06:29,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=17692, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=611, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=18123, PETRI_PLACES=334, PETRI_TRANSITIONS=611} [2024-01-31 16:06:29,387 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 257 predicate places. [2024-01-31 16:06:29,387 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 611 transitions, 18123 flow [2024-01-31 16:06:29,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:29,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:29,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:29,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-01-31 16:06:29,387 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:29,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:29,388 INFO L85 PathProgramCache]: Analyzing trace with hash -870813246, now seen corresponding path program 3 times [2024-01-31 16:06:29,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:29,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441715830] [2024-01-31 16:06:29,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:29,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:29,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:29,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:29,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:29,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441715830] [2024-01-31 16:06:29,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441715830] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:29,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:29,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:06:29,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574483079] [2024-01-31 16:06:29,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:29,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:06:29,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:29,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:06:29,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:06:29,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:06:29,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 611 transitions, 18123 flow. Second operand has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:29,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:29,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:06:29,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:31,231 INFO L124 PetriNetUnfolderBase]: 2722/5595 cut-off events. [2024-01-31 16:06:31,231 INFO L125 PetriNetUnfolderBase]: For 347211/347935 co-relation queries the response was YES. [2024-01-31 16:06:31,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61774 conditions, 5595 events. 2722/5595 cut-off events. For 347211/347935 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 44120 event pairs, 343 based on Foata normal form. 62/5532 useless extension candidates. Maximal degree in co-relation 61628. Up to 2349 conditions per place. [2024-01-31 16:06:31,305 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 424 selfloop transitions, 193 changer transitions 2/664 dead transitions. [2024-01-31 16:06:31,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 664 transitions, 20361 flow [2024-01-31 16:06:31,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:06:31,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:06:31,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 238 transitions. [2024-01-31 16:06:31,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4657534246575342 [2024-01-31 16:06:31,306 INFO L175 Difference]: Start difference. First operand has 334 places, 611 transitions, 18123 flow. Second operand 7 states and 238 transitions. [2024-01-31 16:06:31,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 664 transitions, 20361 flow [2024-01-31 16:06:32,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 664 transitions, 20028 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-01-31 16:06:32,250 INFO L231 Difference]: Finished difference. Result has 337 places, 621 transitions, 18621 flow [2024-01-31 16:06:32,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=17810, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=611, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=18621, PETRI_PLACES=337, PETRI_TRANSITIONS=621} [2024-01-31 16:06:32,250 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 260 predicate places. [2024-01-31 16:06:32,251 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 621 transitions, 18621 flow [2024-01-31 16:06:32,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:32,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:32,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:32,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-01-31 16:06:32,251 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:32,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:32,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1624269250, now seen corresponding path program 4 times [2024-01-31 16:06:32,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:32,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138503240] [2024-01-31 16:06:32,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:32,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:32,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:32,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:32,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:32,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138503240] [2024-01-31 16:06:32,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138503240] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:32,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:32,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:06:32,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699199780] [2024-01-31 16:06:32,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:32,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:06:32,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:32,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:06:32,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:06:32,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:06:32,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 621 transitions, 18621 flow. Second operand has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:32,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:32,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:06:32,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:34,158 INFO L124 PetriNetUnfolderBase]: 2804/5687 cut-off events. [2024-01-31 16:06:34,159 INFO L125 PetriNetUnfolderBase]: For 355253/356053 co-relation queries the response was YES. [2024-01-31 16:06:34,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63211 conditions, 5687 events. 2804/5687 cut-off events. For 355253/356053 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 44489 event pairs, 472 based on Foata normal form. 62/5619 useless extension candidates. Maximal degree in co-relation 63063. Up to 2375 conditions per place. [2024-01-31 16:06:34,237 INFO L140 encePairwiseOnDemand]: 60/73 looper letters, 403 selfloop transitions, 220 changer transitions 2/670 dead transitions. [2024-01-31 16:06:34,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 670 transitions, 20626 flow [2024-01-31 16:06:34,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:06:34,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:06:34,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 243 transitions. [2024-01-31 16:06:34,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4755381604696673 [2024-01-31 16:06:34,238 INFO L175 Difference]: Start difference. First operand has 337 places, 621 transitions, 18621 flow. Second operand 7 states and 243 transitions. [2024-01-31 16:06:34,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 670 transitions, 20626 flow [2024-01-31 16:06:35,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 670 transitions, 20476 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:06:35,291 INFO L231 Difference]: Finished difference. Result has 343 places, 629 transitions, 19174 flow [2024-01-31 16:06:35,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=18475, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=621, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=212, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=19174, PETRI_PLACES=343, PETRI_TRANSITIONS=629} [2024-01-31 16:06:35,292 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 266 predicate places. [2024-01-31 16:06:35,292 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 629 transitions, 19174 flow [2024-01-31 16:06:35,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:35,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:35,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:35,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-01-31 16:06:35,292 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:35,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:35,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1186839058, now seen corresponding path program 5 times [2024-01-31 16:06:35,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:35,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169882471] [2024-01-31 16:06:35,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:35,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:35,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:35,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:35,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:35,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169882471] [2024-01-31 16:06:35,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169882471] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:35,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:35,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:06:35,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974586782] [2024-01-31 16:06:35,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:35,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:06:35,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:35,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:06:35,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:06:35,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:06:35,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 629 transitions, 19174 flow. Second operand has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:35,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:35,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:06:35,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:37,289 INFO L124 PetriNetUnfolderBase]: 2774/5671 cut-off events. [2024-01-31 16:06:37,290 INFO L125 PetriNetUnfolderBase]: For 372239/373004 co-relation queries the response was YES. [2024-01-31 16:06:37,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64243 conditions, 5671 events. 2774/5671 cut-off events. For 372239/373004 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 44740 event pairs, 357 based on Foata normal form. 62/5608 useless extension candidates. Maximal degree in co-relation 64093. Up to 2365 conditions per place. [2024-01-31 16:06:37,366 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 433 selfloop transitions, 206 changer transitions 2/686 dead transitions. [2024-01-31 16:06:37,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 686 transitions, 21430 flow [2024-01-31 16:06:37,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:06:37,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:06:37,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 245 transitions. [2024-01-31 16:06:37,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4794520547945205 [2024-01-31 16:06:37,367 INFO L175 Difference]: Start difference. First operand has 343 places, 629 transitions, 19174 flow. Second operand 7 states and 245 transitions. [2024-01-31 16:06:37,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 686 transitions, 21430 flow [2024-01-31 16:06:38,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 686 transitions, 20907 flow, removed 52 selfloop flow, removed 6 redundant places. [2024-01-31 16:06:38,457 INFO L231 Difference]: Finished difference. Result has 344 places, 629 transitions, 19134 flow [2024-01-31 16:06:38,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=18711, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=629, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=206, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=19134, PETRI_PLACES=344, PETRI_TRANSITIONS=629} [2024-01-31 16:06:38,457 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 267 predicate places. [2024-01-31 16:06:38,458 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 629 transitions, 19134 flow [2024-01-31 16:06:38,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:38,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:38,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:38,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-01-31 16:06:38,458 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:38,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:38,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1209377578, now seen corresponding path program 6 times [2024-01-31 16:06:38,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:38,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647559992] [2024-01-31 16:06:38,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:38,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:38,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:38,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:38,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:38,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647559992] [2024-01-31 16:06:38,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647559992] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:38,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:38,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:06:38,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793354574] [2024-01-31 16:06:38,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:38,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:06:38,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:38,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:06:38,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:06:38,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:06:38,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 629 transitions, 19134 flow. Second operand has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:38,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:38,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:06:38,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:40,377 INFO L124 PetriNetUnfolderBase]: 2748/5633 cut-off events. [2024-01-31 16:06:40,377 INFO L125 PetriNetUnfolderBase]: For 373697/374439 co-relation queries the response was YES. [2024-01-31 16:06:40,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63388 conditions, 5633 events. 2748/5633 cut-off events. For 373697/374439 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 44395 event pairs, 360 based on Foata normal form. 66/5580 useless extension candidates. Maximal degree in co-relation 63237. Up to 2357 conditions per place. [2024-01-31 16:06:40,445 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 428 selfloop transitions, 208 changer transitions 2/683 dead transitions. [2024-01-31 16:06:40,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 683 transitions, 21264 flow [2024-01-31 16:06:40,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:06:40,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:06:40,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 246 transitions. [2024-01-31 16:06:40,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48140900195694714 [2024-01-31 16:06:40,448 INFO L175 Difference]: Start difference. First operand has 344 places, 629 transitions, 19134 flow. Second operand 7 states and 246 transitions. [2024-01-31 16:06:40,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 683 transitions, 21264 flow [2024-01-31 16:06:41,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 683 transitions, 20983 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-01-31 16:06:41,444 INFO L231 Difference]: Finished difference. Result has 346 places, 629 transitions, 19280 flow [2024-01-31 16:06:41,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=18853, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=629, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=208, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=19280, PETRI_PLACES=346, PETRI_TRANSITIONS=629} [2024-01-31 16:06:41,445 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 269 predicate places. [2024-01-31 16:06:41,445 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 629 transitions, 19280 flow [2024-01-31 16:06:41,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:41,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:41,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:41,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-01-31 16:06:41,445 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:41,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:41,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1383289478, now seen corresponding path program 7 times [2024-01-31 16:06:41,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:41,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670474350] [2024-01-31 16:06:41,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:41,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:41,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:41,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:41,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:41,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670474350] [2024-01-31 16:06:41,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670474350] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:41,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:41,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:06:41,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875756757] [2024-01-31 16:06:41,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:41,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:06:41,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:41,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:06:41,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:06:41,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:06:41,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 629 transitions, 19280 flow. Second operand has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:41,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:41,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:06:41,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:43,367 INFO L124 PetriNetUnfolderBase]: 2738/5611 cut-off events. [2024-01-31 16:06:43,368 INFO L125 PetriNetUnfolderBase]: For 381969/382734 co-relation queries the response was YES. [2024-01-31 16:06:43,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63287 conditions, 5611 events. 2738/5611 cut-off events. For 381969/382734 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 44219 event pairs, 345 based on Foata normal form. 54/5540 useless extension candidates. Maximal degree in co-relation 63135. Up to 2353 conditions per place. [2024-01-31 16:06:43,445 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 408 selfloop transitions, 221 changer transitions 2/676 dead transitions. [2024-01-31 16:06:43,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 676 transitions, 21213 flow [2024-01-31 16:06:43,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:06:43,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:06:43,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 242 transitions. [2024-01-31 16:06:43,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4735812133072407 [2024-01-31 16:06:43,446 INFO L175 Difference]: Start difference. First operand has 346 places, 629 transitions, 19280 flow. Second operand 7 states and 242 transitions. [2024-01-31 16:06:43,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 676 transitions, 21213 flow [2024-01-31 16:06:44,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 676 transitions, 20795 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-31 16:06:44,623 INFO L231 Difference]: Finished difference. Result has 347 places, 629 transitions, 19319 flow [2024-01-31 16:06:44,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=18862, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=629, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=221, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=19319, PETRI_PLACES=347, PETRI_TRANSITIONS=629} [2024-01-31 16:06:44,623 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 270 predicate places. [2024-01-31 16:06:44,624 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 629 transitions, 19319 flow [2024-01-31 16:06:44,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:44,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:44,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:44,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-01-31 16:06:44,624 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:44,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:44,625 INFO L85 PathProgramCache]: Analyzing trace with hash -229445704, now seen corresponding path program 1 times [2024-01-31 16:06:44,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:44,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614437176] [2024-01-31 16:06:44,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:44,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:44,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:44,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:44,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:44,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614437176] [2024-01-31 16:06:44,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614437176] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:44,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:44,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:06:44,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436028318] [2024-01-31 16:06:44,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:44,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:06:44,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:44,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:06:44,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:06:44,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:06:44,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 629 transitions, 19319 flow. Second operand has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:44,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:44,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:06:44,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:46,576 INFO L124 PetriNetUnfolderBase]: 2777/5721 cut-off events. [2024-01-31 16:06:46,576 INFO L125 PetriNetUnfolderBase]: For 382054/382909 co-relation queries the response was YES. [2024-01-31 16:06:46,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64998 conditions, 5721 events. 2777/5721 cut-off events. For 382054/382909 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 44883 event pairs, 349 based on Foata normal form. 24/5582 useless extension candidates. Maximal degree in co-relation 64846. Up to 2391 conditions per place. [2024-01-31 16:06:46,648 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 427 selfloop transitions, 204 changer transitions 2/681 dead transitions. [2024-01-31 16:06:46,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 681 transitions, 21343 flow [2024-01-31 16:06:46,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:06:46,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:06:46,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 245 transitions. [2024-01-31 16:06:46,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4794520547945205 [2024-01-31 16:06:46,649 INFO L175 Difference]: Start difference. First operand has 347 places, 629 transitions, 19319 flow. Second operand 7 states and 245 transitions. [2024-01-31 16:06:46,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 681 transitions, 21343 flow [2024-01-31 16:06:47,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 681 transitions, 20894 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-01-31 16:06:47,769 INFO L231 Difference]: Finished difference. Result has 349 places, 629 transitions, 19289 flow [2024-01-31 16:06:47,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=18870, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=629, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=19289, PETRI_PLACES=349, PETRI_TRANSITIONS=629} [2024-01-31 16:06:47,770 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 272 predicate places. [2024-01-31 16:06:47,770 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 629 transitions, 19289 flow [2024-01-31 16:06:47,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:47,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:47,771 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] [2024-01-31 16:06:47,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-01-31 16:06:47,771 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:47,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:47,771 INFO L85 PathProgramCache]: Analyzing trace with hash 964668706, now seen corresponding path program 2 times [2024-01-31 16:06:47,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:47,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248873010] [2024-01-31 16:06:47,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:47,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:47,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:47,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:47,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:47,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248873010] [2024-01-31 16:06:47,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248873010] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:47,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:47,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:06:47,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689409914] [2024-01-31 16:06:47,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:47,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:06:47,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:47,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:06:47,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:06:47,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:06:47,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 629 transitions, 19289 flow. Second operand has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:47,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:47,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:06:47,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:49,761 INFO L124 PetriNetUnfolderBase]: 2775/5713 cut-off events. [2024-01-31 16:06:49,761 INFO L125 PetriNetUnfolderBase]: For 380445/381263 co-relation queries the response was YES. [2024-01-31 16:06:49,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65052 conditions, 5713 events. 2775/5713 cut-off events. For 380445/381263 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 44825 event pairs, 379 based on Foata normal form. 18/5551 useless extension candidates. Maximal degree in co-relation 64898. Up to 2392 conditions per place. [2024-01-31 16:06:49,832 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 419 selfloop transitions, 211 changer transitions 2/680 dead transitions. [2024-01-31 16:06:49,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 680 transitions, 21279 flow [2024-01-31 16:06:49,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:06:49,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:06:49,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 242 transitions. [2024-01-31 16:06:49,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4735812133072407 [2024-01-31 16:06:49,840 INFO L175 Difference]: Start difference. First operand has 349 places, 629 transitions, 19289 flow. Second operand 7 states and 242 transitions. [2024-01-31 16:06:49,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 680 transitions, 21279 flow [2024-01-31 16:06:50,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 680 transitions, 20999 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-01-31 16:06:50,902 INFO L231 Difference]: Finished difference. Result has 351 places, 629 transitions, 19442 flow [2024-01-31 16:06:50,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=19009, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=629, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=211, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=19442, PETRI_PLACES=351, PETRI_TRANSITIONS=629} [2024-01-31 16:06:50,903 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 274 predicate places. [2024-01-31 16:06:50,904 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 629 transitions, 19442 flow [2024-01-31 16:06:50,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:50,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:50,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:50,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-01-31 16:06:50,904 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:50,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:50,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1179633250, now seen corresponding path program 3 times [2024-01-31 16:06:50,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:50,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969304537] [2024-01-31 16:06:50,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:50,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:50,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:51,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:51,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:51,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969304537] [2024-01-31 16:06:51,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969304537] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:51,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:51,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:06:51,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411683697] [2024-01-31 16:06:51,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:51,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:06:51,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:51,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:06:51,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:06:51,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:06:51,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 629 transitions, 19442 flow. Second operand has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:51,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:51,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:06:51,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:52,874 INFO L124 PetriNetUnfolderBase]: 2753/5681 cut-off events. [2024-01-31 16:06:52,874 INFO L125 PetriNetUnfolderBase]: For 390965/391824 co-relation queries the response was YES. [2024-01-31 16:06:52,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64982 conditions, 5681 events. 2753/5681 cut-off events. For 390965/391824 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 44576 event pairs, 353 based on Foata normal form. 24/5542 useless extension candidates. Maximal degree in co-relation 64827. Up to 2383 conditions per place. [2024-01-31 16:06:52,952 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 404 selfloop transitions, 218 changer transitions 2/672 dead transitions. [2024-01-31 16:06:52,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 672 transitions, 21290 flow [2024-01-31 16:06:52,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:06:52,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:06:52,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 242 transitions. [2024-01-31 16:06:52,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4735812133072407 [2024-01-31 16:06:52,953 INFO L175 Difference]: Start difference. First operand has 351 places, 629 transitions, 19442 flow. Second operand 7 states and 242 transitions. [2024-01-31 16:06:52,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 672 transitions, 21290 flow [2024-01-31 16:06:54,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 672 transitions, 20856 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-01-31 16:06:54,237 INFO L231 Difference]: Finished difference. Result has 351 places, 629 transitions, 19459 flow [2024-01-31 16:06:54,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=19008, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=629, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=218, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=19459, PETRI_PLACES=351, PETRI_TRANSITIONS=629} [2024-01-31 16:06:54,238 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 274 predicate places. [2024-01-31 16:06:54,238 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 629 transitions, 19459 flow [2024-01-31 16:06:54,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:54,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:54,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:54,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-01-31 16:06:54,238 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:54,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:54,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1109998424, now seen corresponding path program 1 times [2024-01-31 16:06:54,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:54,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191664910] [2024-01-31 16:06:54,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:54,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:54,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:54,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:54,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:54,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191664910] [2024-01-31 16:06:54,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191664910] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:54,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:54,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:06:54,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661706294] [2024-01-31 16:06:54,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:54,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:06:54,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:54,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:06:54,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:06:54,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:06:54,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 629 transitions, 19459 flow. Second operand has 8 states, 8 states have (on average 23.0) internal successors, (184), 8 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:54,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:54,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:06:54,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:56,241 INFO L124 PetriNetUnfolderBase]: 2761/5690 cut-off events. [2024-01-31 16:06:56,242 INFO L125 PetriNetUnfolderBase]: For 392634/393472 co-relation queries the response was YES. [2024-01-31 16:06:56,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65237 conditions, 5690 events. 2761/5690 cut-off events. For 392634/393472 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 44778 event pairs, 799 based on Foata normal form. 12/5510 useless extension candidates. Maximal degree in co-relation 65083. Up to 3310 conditions per place. [2024-01-31 16:06:56,316 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 517 selfloop transitions, 102 changer transitions 0/667 dead transitions. [2024-01-31 16:06:56,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 667 transitions, 21263 flow [2024-01-31 16:06:56,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:06:56,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:06:56,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 226 transitions. [2024-01-31 16:06:56,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44227005870841485 [2024-01-31 16:06:56,317 INFO L175 Difference]: Start difference. First operand has 351 places, 629 transitions, 19459 flow. Second operand 7 states and 226 transitions. [2024-01-31 16:06:56,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 667 transitions, 21263 flow [2024-01-31 16:06:57,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 667 transitions, 20814 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-31 16:06:57,466 INFO L231 Difference]: Finished difference. Result has 352 places, 630 transitions, 19249 flow [2024-01-31 16:06:57,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=19010, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=629, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=528, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=19249, PETRI_PLACES=352, PETRI_TRANSITIONS=630} [2024-01-31 16:06:57,467 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 275 predicate places. [2024-01-31 16:06:57,467 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 630 transitions, 19249 flow [2024-01-31 16:06:57,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.0) internal successors, (184), 8 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:57,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:06:57,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:06:57,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-01-31 16:06:57,467 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:06:57,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:06:57,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1892185758, now seen corresponding path program 2 times [2024-01-31 16:06:57,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:06:57,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004212757] [2024-01-31 16:06:57,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:06:57,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:06:57,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:06:57,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:06:57,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:06:57,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004212757] [2024-01-31 16:06:57,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004212757] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:06:57,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:06:57,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:06:57,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662797395] [2024-01-31 16:06:57,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:06:57,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:06:57,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:06:57,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:06:57,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:06:57,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:06:57,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 630 transitions, 19249 flow. Second operand has 8 states, 8 states have (on average 23.0) internal successors, (184), 8 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:06:57,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:06:57,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:06:57,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:06:59,495 INFO L124 PetriNetUnfolderBase]: 2757/5691 cut-off events. [2024-01-31 16:06:59,495 INFO L125 PetriNetUnfolderBase]: For 382300/383145 co-relation queries the response was YES. [2024-01-31 16:06:59,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64530 conditions, 5691 events. 2757/5691 cut-off events. For 382300/383145 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 44873 event pairs, 787 based on Foata normal form. 15/5515 useless extension candidates. Maximal degree in co-relation 64375. Up to 3310 conditions per place. [2024-01-31 16:06:59,570 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 499 selfloop transitions, 123 changer transitions 0/670 dead transitions. [2024-01-31 16:06:59,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 670 transitions, 21131 flow [2024-01-31 16:06:59,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:06:59,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:06:59,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 232 transitions. [2024-01-31 16:06:59,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45401174168297453 [2024-01-31 16:06:59,570 INFO L175 Difference]: Start difference. First operand has 352 places, 630 transitions, 19249 flow. Second operand 7 states and 232 transitions. [2024-01-31 16:06:59,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 670 transitions, 21131 flow [2024-01-31 16:07:00,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 670 transitions, 20866 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-01-31 16:07:00,642 INFO L231 Difference]: Finished difference. Result has 354 places, 630 transitions, 19239 flow [2024-01-31 16:07:00,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=18984, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=630, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=507, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=19239, PETRI_PLACES=354, PETRI_TRANSITIONS=630} [2024-01-31 16:07:00,642 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 277 predicate places. [2024-01-31 16:07:00,643 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 630 transitions, 19239 flow [2024-01-31 16:07:00,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.0) internal successors, (184), 8 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:00,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:00,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:07:00,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-01-31 16:07:00,643 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:07:00,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:00,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1110054134, now seen corresponding path program 2 times [2024-01-31 16:07:00,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:00,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207697080] [2024-01-31 16:07:00,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:00,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:00,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:00,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:00,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:00,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207697080] [2024-01-31 16:07:00,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207697080] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:00,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:00,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:07:00,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200407040] [2024-01-31 16:07:00,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:00,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:07:00,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:00,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:07:00,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:07:00,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:07:00,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 630 transitions, 19239 flow. Second operand has 6 states, 6 states have (on average 33.166666666666664) internal successors, (199), 6 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:00,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:00,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:07:00,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:02,256 INFO L124 PetriNetUnfolderBase]: 2150/4707 cut-off events. [2024-01-31 16:07:02,256 INFO L125 PetriNetUnfolderBase]: For 363770/364907 co-relation queries the response was YES. [2024-01-31 16:07:02,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55261 conditions, 4707 events. 2150/4707 cut-off events. For 363770/364907 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 38955 event pairs, 466 based on Foata normal form. 66/4528 useless extension candidates. Maximal degree in co-relation 55105. Up to 1932 conditions per place. [2024-01-31 16:07:02,323 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 355 selfloop transitions, 223 changer transitions 2/665 dead transitions. [2024-01-31 16:07:02,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 665 transitions, 20931 flow [2024-01-31 16:07:02,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:07:02,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:07:02,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 263 transitions. [2024-01-31 16:07:02,324 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6004566210045662 [2024-01-31 16:07:02,324 INFO L175 Difference]: Start difference. First operand has 354 places, 630 transitions, 19239 flow. Second operand 6 states and 263 transitions. [2024-01-31 16:07:02,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 665 transitions, 20931 flow [2024-01-31 16:07:03,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 665 transitions, 20658 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-01-31 16:07:03,272 INFO L231 Difference]: Finished difference. Result has 354 places, 630 transitions, 19424 flow [2024-01-31 16:07:03,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=18966, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=630, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=223, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=19424, PETRI_PLACES=354, PETRI_TRANSITIONS=630} [2024-01-31 16:07:03,273 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 277 predicate places. [2024-01-31 16:07:03,273 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 630 transitions, 19424 flow [2024-01-31 16:07:03,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.166666666666664) internal successors, (199), 6 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:03,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:03,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:07:03,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-01-31 16:07:03,274 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:07:03,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:03,274 INFO L85 PathProgramCache]: Analyzing trace with hash -989428892, now seen corresponding path program 3 times [2024-01-31 16:07:03,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:03,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589692907] [2024-01-31 16:07:03,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:03,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:03,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:03,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:03,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:03,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589692907] [2024-01-31 16:07:03,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589692907] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:03,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:03,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-31 16:07:03,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495271376] [2024-01-31 16:07:03,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:03,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 16:07:03,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:03,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 16:07:03,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-01-31 16:07:03,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2024-01-31 16:07:03,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 630 transitions, 19424 flow. Second operand has 6 states, 6 states have (on average 33.166666666666664) internal successors, (199), 6 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:03,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:03,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2024-01-31 16:07:03,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:04,792 INFO L124 PetriNetUnfolderBase]: 2133/4639 cut-off events. [2024-01-31 16:07:04,793 INFO L125 PetriNetUnfolderBase]: For 360093/361115 co-relation queries the response was YES. [2024-01-31 16:07:04,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54613 conditions, 4639 events. 2133/4639 cut-off events. For 360093/361115 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 37971 event pairs, 321 based on Foata normal form. 46/4390 useless extension candidates. Maximal degree in co-relation 54456. Up to 1919 conditions per place. [2024-01-31 16:07:04,859 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 375 selfloop transitions, 194 changer transitions 2/656 dead transitions. [2024-01-31 16:07:04,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 656 transitions, 20931 flow [2024-01-31 16:07:04,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 16:07:04,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 16:07:04,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 251 transitions. [2024-01-31 16:07:04,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5730593607305936 [2024-01-31 16:07:04,860 INFO L175 Difference]: Start difference. First operand has 354 places, 630 transitions, 19424 flow. Second operand 6 states and 251 transitions. [2024-01-31 16:07:04,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 656 transitions, 20931 flow [2024-01-31 16:07:05,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 656 transitions, 20177 flow, removed 0 selfloop flow, removed 21 redundant places. [2024-01-31 16:07:05,738 INFO L231 Difference]: Finished difference. Result has 337 places, 629 transitions, 19012 flow [2024-01-31 16:07:05,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=18624, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=629, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=435, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=19012, PETRI_PLACES=337, PETRI_TRANSITIONS=629} [2024-01-31 16:07:05,739 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 260 predicate places. [2024-01-31 16:07:05,739 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 629 transitions, 19012 flow [2024-01-31 16:07:05,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.166666666666664) internal successors, (199), 6 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:05,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:05,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:07:05,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-01-31 16:07:05,739 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:07:05,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:05,740 INFO L85 PathProgramCache]: Analyzing trace with hash 532253316, now seen corresponding path program 4 times [2024-01-31 16:07:05,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:05,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829533553] [2024-01-31 16:07:05,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:05,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:05,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:05,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:05,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:05,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829533553] [2024-01-31 16:07:05,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829533553] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:05,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:05,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:07:05,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201078481] [2024-01-31 16:07:05,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:05,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:07:05,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:05,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:07:05,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:07:06,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:07:06,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 629 transitions, 19012 flow. Second operand has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:06,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:06,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:07:06,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:07,738 INFO L124 PetriNetUnfolderBase]: 2686/5519 cut-off events. [2024-01-31 16:07:07,738 INFO L125 PetriNetUnfolderBase]: For 363448/364307 co-relation queries the response was YES. [2024-01-31 16:07:07,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62040 conditions, 5519 events. 2686/5519 cut-off events. For 363448/364307 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 42933 event pairs, 308 based on Foata normal form. 32/5376 useless extension candidates. Maximal degree in co-relation 61900. Up to 2370 conditions per place. [2024-01-31 16:07:07,812 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 379 selfloop transitions, 247 changer transitions 2/676 dead transitions. [2024-01-31 16:07:07,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 676 transitions, 20861 flow [2024-01-31 16:07:07,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:07:07,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:07:07,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 251 transitions. [2024-01-31 16:07:07,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4911937377690802 [2024-01-31 16:07:07,813 INFO L175 Difference]: Start difference. First operand has 337 places, 629 transitions, 19012 flow. Second operand 7 states and 251 transitions. [2024-01-31 16:07:07,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 676 transitions, 20861 flow [2024-01-31 16:07:08,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 676 transitions, 20610 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-01-31 16:07:09,005 INFO L231 Difference]: Finished difference. Result has 341 places, 629 transitions, 19320 flow [2024-01-31 16:07:09,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=18761, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=629, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=247, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=19320, PETRI_PLACES=341, PETRI_TRANSITIONS=629} [2024-01-31 16:07:09,006 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 264 predicate places. [2024-01-31 16:07:09,006 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 629 transitions, 19320 flow [2024-01-31 16:07:09,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:09,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:09,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:07:09,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-01-31 16:07:09,007 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:07:09,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:09,007 INFO L85 PathProgramCache]: Analyzing trace with hash -2041204322, now seen corresponding path program 5 times [2024-01-31 16:07:09,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:09,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670613573] [2024-01-31 16:07:09,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:09,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:09,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:09,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:09,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:09,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670613573] [2024-01-31 16:07:09,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670613573] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:09,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:09,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:07:09,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171490252] [2024-01-31 16:07:09,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:09,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:07:09,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:09,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:07:09,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:07:09,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:07:09,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 629 transitions, 19320 flow. Second operand has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:09,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:09,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:07:09,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:10,869 INFO L124 PetriNetUnfolderBase]: 2670/5489 cut-off events. [2024-01-31 16:07:10,870 INFO L125 PetriNetUnfolderBase]: For 375004/375867 co-relation queries the response was YES. [2024-01-31 16:07:10,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62504 conditions, 5489 events. 2670/5489 cut-off events. For 375004/375867 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 42656 event pairs, 324 based on Foata normal form. 30/5344 useless extension candidates. Maximal degree in co-relation 62363. Up to 2363 conditions per place. [2024-01-31 16:07:10,948 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 398 selfloop transitions, 227 changer transitions 2/675 dead transitions. [2024-01-31 16:07:10,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 675 transitions, 21183 flow [2024-01-31 16:07:10,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:07:10,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:07:10,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 247 transitions. [2024-01-31 16:07:10,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48336594911937375 [2024-01-31 16:07:10,949 INFO L175 Difference]: Start difference. First operand has 341 places, 629 transitions, 19320 flow. Second operand 7 states and 247 transitions. [2024-01-31 16:07:10,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 675 transitions, 21183 flow [2024-01-31 16:07:11,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 675 transitions, 20543 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-01-31 16:07:11,995 INFO L231 Difference]: Finished difference. Result has 341 places, 629 transitions, 19148 flow [2024-01-31 16:07:11,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=18680, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=629, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=227, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=19148, PETRI_PLACES=341, PETRI_TRANSITIONS=629} [2024-01-31 16:07:11,996 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 264 predicate places. [2024-01-31 16:07:11,996 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 629 transitions, 19148 flow [2024-01-31 16:07:11,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:11,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:11,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:07:11,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-01-31 16:07:11,997 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:07:11,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:11,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1013414822, now seen corresponding path program 6 times [2024-01-31 16:07:11,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:11,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775514349] [2024-01-31 16:07:11,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:11,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:12,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:12,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:12,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:12,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775514349] [2024-01-31 16:07:12,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775514349] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:12,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:12,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:07:12,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888637345] [2024-01-31 16:07:12,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:12,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:07:12,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:12,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:07:12,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:07:12,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:07:12,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 629 transitions, 19148 flow. Second operand has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:12,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:12,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:07:12,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:13,907 INFO L124 PetriNetUnfolderBase]: 2731/5614 cut-off events. [2024-01-31 16:07:13,907 INFO L125 PetriNetUnfolderBase]: For 375481/376290 co-relation queries the response was YES. [2024-01-31 16:07:13,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63438 conditions, 5614 events. 2731/5614 cut-off events. For 375481/376290 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 43724 event pairs, 312 based on Foata normal form. 26/5455 useless extension candidates. Maximal degree in co-relation 63299. Up to 2389 conditions per place. [2024-01-31 16:07:13,975 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 428 selfloop transitions, 206 changer transitions 2/684 dead transitions. [2024-01-31 16:07:13,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 684 transitions, 21461 flow [2024-01-31 16:07:13,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:07:13,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:07:13,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 237 transitions. [2024-01-31 16:07:13,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4637964774951076 [2024-01-31 16:07:13,976 INFO L175 Difference]: Start difference. First operand has 341 places, 629 transitions, 19148 flow. Second operand 7 states and 237 transitions. [2024-01-31 16:07:13,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 684 transitions, 21461 flow [2024-01-31 16:07:14,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 684 transitions, 20983 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-31 16:07:14,943 INFO L231 Difference]: Finished difference. Result has 343 places, 641 transitions, 19629 flow [2024-01-31 16:07:14,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=18694, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=629, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=19629, PETRI_PLACES=343, PETRI_TRANSITIONS=641} [2024-01-31 16:07:14,944 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 266 predicate places. [2024-01-31 16:07:14,944 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 641 transitions, 19629 flow [2024-01-31 16:07:14,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:14,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:14,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:07:14,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-01-31 16:07:14,944 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:07:14,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:14,944 INFO L85 PathProgramCache]: Analyzing trace with hash -809888402, now seen corresponding path program 3 times [2024-01-31 16:07:14,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:14,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841630265] [2024-01-31 16:07:14,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:14,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:14,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:15,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:15,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:15,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841630265] [2024-01-31 16:07:15,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841630265] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:15,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:15,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:07:15,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064600409] [2024-01-31 16:07:15,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:15,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:07:15,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:15,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:07:15,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:07:15,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:07:15,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 641 transitions, 19629 flow. Second operand has 8 states, 8 states have (on average 23.0) internal successors, (184), 8 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:15,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:15,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:07:15,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:16,815 INFO L124 PetriNetUnfolderBase]: 2722/5595 cut-off events. [2024-01-31 16:07:16,815 INFO L125 PetriNetUnfolderBase]: For 378164/378974 co-relation queries the response was YES. [2024-01-31 16:07:16,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63709 conditions, 5595 events. 2722/5595 cut-off events. For 378164/378974 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 43817 event pairs, 964 based on Foata normal form. 29/5440 useless extension candidates. Maximal degree in co-relation 63568. Up to 2846 conditions per place. [2024-01-31 16:07:16,887 INFO L140 encePairwiseOnDemand]: 58/73 looper letters, 437 selfloop transitions, 186 changer transitions 0/671 dead transitions. [2024-01-31 16:07:16,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 671 transitions, 21355 flow [2024-01-31 16:07:16,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:07:16,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:07:16,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 235 transitions. [2024-01-31 16:07:16,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4598825831702544 [2024-01-31 16:07:16,888 INFO L175 Difference]: Start difference. First operand has 343 places, 641 transitions, 19629 flow. Second operand 7 states and 235 transitions. [2024-01-31 16:07:16,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 671 transitions, 21355 flow [2024-01-31 16:07:17,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 671 transitions, 21196 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-31 16:07:17,943 INFO L231 Difference]: Finished difference. Result has 348 places, 642 transitions, 19885 flow [2024-01-31 16:07:17,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=19470, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=641, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=185, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=456, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=19885, PETRI_PLACES=348, PETRI_TRANSITIONS=642} [2024-01-31 16:07:17,944 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 271 predicate places. [2024-01-31 16:07:17,944 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 642 transitions, 19885 flow [2024-01-31 16:07:17,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.0) internal successors, (184), 8 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:17,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:17,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:07:17,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-01-31 16:07:17,944 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:07:17,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:17,944 INFO L85 PathProgramCache]: Analyzing trace with hash -335674170, now seen corresponding path program 4 times [2024-01-31 16:07:17,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:17,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350661196] [2024-01-31 16:07:17,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:17,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:17,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:18,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:18,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:18,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350661196] [2024-01-31 16:07:18,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350661196] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:18,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:18,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:07:18,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804681138] [2024-01-31 16:07:18,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:18,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:07:18,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:18,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:07:18,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:07:18,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:07:18,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 642 transitions, 19885 flow. Second operand has 8 states, 8 states have (on average 23.0) internal successors, (184), 8 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:18,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:18,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:07:18,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:19,921 INFO L124 PetriNetUnfolderBase]: 2793/5761 cut-off events. [2024-01-31 16:07:19,921 INFO L125 PetriNetUnfolderBase]: For 406885/407771 co-relation queries the response was YES. [2024-01-31 16:07:19,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66139 conditions, 5761 events. 2793/5761 cut-off events. For 406885/407771 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 45468 event pairs, 966 based on Foata normal form. 32/5600 useless extension candidates. Maximal degree in co-relation 65996. Up to 2863 conditions per place. [2024-01-31 16:07:19,997 INFO L140 encePairwiseOnDemand]: 55/73 looper letters, 427 selfloop transitions, 252 changer transitions 1/728 dead transitions. [2024-01-31 16:07:19,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 728 transitions, 23379 flow [2024-01-31 16:07:19,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:07:19,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:07:19,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 280 transitions. [2024-01-31 16:07:19,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4794520547945205 [2024-01-31 16:07:19,998 INFO L175 Difference]: Start difference. First operand has 348 places, 642 transitions, 19885 flow. Second operand 8 states and 280 transitions. [2024-01-31 16:07:19,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 728 transitions, 23379 flow [2024-01-31 16:07:21,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 728 transitions, 22897 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-01-31 16:07:21,110 INFO L231 Difference]: Finished difference. Result has 350 places, 685 transitions, 21430 flow [2024-01-31 16:07:21,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=19438, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=642, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=21430, PETRI_PLACES=350, PETRI_TRANSITIONS=685} [2024-01-31 16:07:21,111 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 273 predicate places. [2024-01-31 16:07:21,111 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 685 transitions, 21430 flow [2024-01-31 16:07:21,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.0) internal successors, (184), 8 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:21,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:21,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:07:21,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-01-31 16:07:21,111 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:07:21,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:21,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1296940532, now seen corresponding path program 5 times [2024-01-31 16:07:21,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:21,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96262470] [2024-01-31 16:07:21,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:21,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:21,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:21,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:21,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:21,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96262470] [2024-01-31 16:07:21,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96262470] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:21,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:21,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:07:21,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419375214] [2024-01-31 16:07:21,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:21,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:07:21,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:21,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:07:21,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:07:21,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:07:21,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 685 transitions, 21430 flow. Second operand has 8 states, 8 states have (on average 23.0) internal successors, (184), 8 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:21,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:21,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:07:21,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:23,251 INFO L124 PetriNetUnfolderBase]: 2799/5774 cut-off events. [2024-01-31 16:07:23,251 INFO L125 PetriNetUnfolderBase]: For 407576/408466 co-relation queries the response was YES. [2024-01-31 16:07:23,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66912 conditions, 5774 events. 2799/5774 cut-off events. For 407576/408466 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 45664 event pairs, 941 based on Foata normal form. 28/5606 useless extension candidates. Maximal degree in co-relation 66769. Up to 2871 conditions per place. [2024-01-31 16:07:23,322 INFO L140 encePairwiseOnDemand]: 59/73 looper letters, 461 selfloop transitions, 209 changer transitions 1/719 dead transitions. [2024-01-31 16:07:23,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 719 transitions, 23320 flow [2024-01-31 16:07:23,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:07:23,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:07:23,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 237 transitions. [2024-01-31 16:07:23,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4637964774951076 [2024-01-31 16:07:23,323 INFO L175 Difference]: Start difference. First operand has 350 places, 685 transitions, 21430 flow. Second operand 7 states and 237 transitions. [2024-01-31 16:07:23,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 719 transitions, 23320 flow [2024-01-31 16:07:24,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 719 transitions, 22910 flow, removed 41 selfloop flow, removed 9 redundant places. [2024-01-31 16:07:24,394 INFO L231 Difference]: Finished difference. Result has 347 places, 688 transitions, 21588 flow [2024-01-31 16:07:24,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=21018, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=684, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=205, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=478, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=21588, PETRI_PLACES=347, PETRI_TRANSITIONS=688} [2024-01-31 16:07:24,395 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 270 predicate places. [2024-01-31 16:07:24,395 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 688 transitions, 21588 flow [2024-01-31 16:07:24,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.0) internal successors, (184), 8 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:24,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:24,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:07:24,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-01-31 16:07:24,395 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:07:24,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:24,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1662428856, now seen corresponding path program 7 times [2024-01-31 16:07:24,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:24,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922931067] [2024-01-31 16:07:24,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:24,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:24,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:24,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:24,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:24,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922931067] [2024-01-31 16:07:24,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922931067] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:24,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:24,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-01-31 16:07:24,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831373572] [2024-01-31 16:07:24,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:24,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-31 16:07:24,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:24,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-31 16:07:24,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-01-31 16:07:24,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:07:24,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 688 transitions, 21588 flow. Second operand has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:24,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:24,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:07:24,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:26,431 INFO L124 PetriNetUnfolderBase]: 2857/5854 cut-off events. [2024-01-31 16:07:26,431 INFO L125 PetriNetUnfolderBase]: For 416370/417222 co-relation queries the response was YES. [2024-01-31 16:07:26,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67600 conditions, 5854 events. 2857/5854 cut-off events. For 416370/417222 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 45863 event pairs, 445 based on Foata normal form. 20/5668 useless extension candidates. Maximal degree in co-relation 67462. Up to 2502 conditions per place. [2024-01-31 16:07:26,514 INFO L140 encePairwiseOnDemand]: 60/73 looper letters, 442 selfloop transitions, 243 changer transitions 2/735 dead transitions. [2024-01-31 16:07:26,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 735 transitions, 23644 flow [2024-01-31 16:07:26,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:07:26,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:07:26,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 235 transitions. [2024-01-31 16:07:26,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4598825831702544 [2024-01-31 16:07:26,515 INFO L175 Difference]: Start difference. First operand has 347 places, 688 transitions, 21588 flow. Second operand 7 states and 235 transitions. [2024-01-31 16:07:26,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 735 transitions, 23644 flow [2024-01-31 16:07:27,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 735 transitions, 23311 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-01-31 16:07:27,649 INFO L231 Difference]: Finished difference. Result has 351 places, 696 transitions, 22015 flow [2024-01-31 16:07:27,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=21259, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=688, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=235, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=22015, PETRI_PLACES=351, PETRI_TRANSITIONS=696} [2024-01-31 16:07:27,650 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 274 predicate places. [2024-01-31 16:07:27,650 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 696 transitions, 22015 flow [2024-01-31 16:07:27,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:27,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:27,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:07:27,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-01-31 16:07:27,650 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:07:27,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:27,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1322024033, now seen corresponding path program 1 times [2024-01-31 16:07:27,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:27,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980000635] [2024-01-31 16:07:27,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:27,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:27,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:27,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:27,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:27,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980000635] [2024-01-31 16:07:27,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980000635] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:27,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:27,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:07:27,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046627953] [2024-01-31 16:07:27,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:27,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:07:27,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:27,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:07:27,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:07:27,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:07:27,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 696 transitions, 22015 flow. Second operand has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:27,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:27,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:07:27,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:29,584 INFO L124 PetriNetUnfolderBase]: 2829/5793 cut-off events. [2024-01-31 16:07:29,584 INFO L125 PetriNetUnfolderBase]: For 423048/423744 co-relation queries the response was YES. [2024-01-31 16:07:29,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68382 conditions, 5793 events. 2829/5793 cut-off events. For 423048/423744 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 45593 event pairs, 641 based on Foata normal form. 46/5669 useless extension candidates. Maximal degree in co-relation 68242. Up to 2577 conditions per place. [2024-01-31 16:07:29,664 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 440 selfloop transitions, 230 changer transitions 15/730 dead transitions. [2024-01-31 16:07:29,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 730 transitions, 23889 flow [2024-01-31 16:07:29,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:07:29,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:07:29,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 232 transitions. [2024-01-31 16:07:29,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45401174168297453 [2024-01-31 16:07:29,665 INFO L175 Difference]: Start difference. First operand has 351 places, 696 transitions, 22015 flow. Second operand 7 states and 232 transitions. [2024-01-31 16:07:29,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 730 transitions, 23889 flow [2024-01-31 16:07:30,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 730 transitions, 23401 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-01-31 16:07:30,841 INFO L231 Difference]: Finished difference. Result has 352 places, 683 transitions, 21733 flow [2024-01-31 16:07:30,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=21527, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=696, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=230, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=466, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=21733, PETRI_PLACES=352, PETRI_TRANSITIONS=683} [2024-01-31 16:07:30,842 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 275 predicate places. [2024-01-31 16:07:30,842 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 683 transitions, 21733 flow [2024-01-31 16:07:30,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:30,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:30,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:07:30,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-01-31 16:07:30,842 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:07:30,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:30,842 INFO L85 PathProgramCache]: Analyzing trace with hash -848491463, now seen corresponding path program 2 times [2024-01-31 16:07:30,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:30,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208110345] [2024-01-31 16:07:30,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:30,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:30,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:30,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:30,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:30,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208110345] [2024-01-31 16:07:30,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208110345] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:30,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:30,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:07:30,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566168324] [2024-01-31 16:07:30,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:30,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:07:30,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:30,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:07:30,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:07:31,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:07:31,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 683 transitions, 21733 flow. Second operand has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:31,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:31,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:07:31,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:32,892 INFO L124 PetriNetUnfolderBase]: 2740/5650 cut-off events. [2024-01-31 16:07:32,892 INFO L125 PetriNetUnfolderBase]: For 412177/412831 co-relation queries the response was YES. [2024-01-31 16:07:32,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66444 conditions, 5650 events. 2740/5650 cut-off events. For 412177/412831 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 44500 event pairs, 625 based on Foata normal form. 36/5515 useless extension candidates. Maximal degree in co-relation 66304. Up to 2577 conditions per place. [2024-01-31 16:07:32,955 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 468 selfloop transitions, 177 changer transitions 28/716 dead transitions. [2024-01-31 16:07:32,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 716 transitions, 23570 flow [2024-01-31 16:07:32,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:07:32,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:07:32,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 233 transitions. [2024-01-31 16:07:32,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45596868884540115 [2024-01-31 16:07:32,956 INFO L175 Difference]: Start difference. First operand has 352 places, 683 transitions, 21733 flow. Second operand 7 states and 233 transitions. [2024-01-31 16:07:32,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 716 transitions, 23570 flow [2024-01-31 16:07:33,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 716 transitions, 23045 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-01-31 16:07:33,924 INFO L231 Difference]: Finished difference. Result has 352 places, 656 transitions, 20883 flow [2024-01-31 16:07:33,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=21212, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=683, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=506, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=20883, PETRI_PLACES=352, PETRI_TRANSITIONS=656} [2024-01-31 16:07:33,925 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 275 predicate places. [2024-01-31 16:07:33,925 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 656 transitions, 20883 flow [2024-01-31 16:07:33,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:33,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:33,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:07:33,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-01-31 16:07:33,926 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:07:33,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:33,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1391541763, now seen corresponding path program 3 times [2024-01-31 16:07:33,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:33,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478038523] [2024-01-31 16:07:33,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:33,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:33,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:34,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:34,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:34,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478038523] [2024-01-31 16:07:34,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478038523] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:34,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:34,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:07:34,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889761887] [2024-01-31 16:07:34,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:34,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:07:34,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:34,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:07:34,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:07:34,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:07:34,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 656 transitions, 20883 flow. Second operand has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:34,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:34,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:07:34,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:35,899 INFO L124 PetriNetUnfolderBase]: 2679/5609 cut-off events. [2024-01-31 16:07:35,899 INFO L125 PetriNetUnfolderBase]: For 399825/400456 co-relation queries the response was YES. [2024-01-31 16:07:35,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65464 conditions, 5609 events. 2679/5609 cut-off events. For 399825/400456 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 44637 event pairs, 664 based on Foata normal form. 35/5469 useless extension candidates. Maximal degree in co-relation 65325. Up to 2987 conditions per place. [2024-01-31 16:07:35,972 INFO L140 encePairwiseOnDemand]: 60/73 looper letters, 491 selfloop transitions, 135 changer transitions 28/697 dead transitions. [2024-01-31 16:07:35,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 697 transitions, 22831 flow [2024-01-31 16:07:35,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:07:35,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:07:35,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 251 transitions. [2024-01-31 16:07:35,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4297945205479452 [2024-01-31 16:07:35,978 INFO L175 Difference]: Start difference. First operand has 352 places, 656 transitions, 20883 flow. Second operand 8 states and 251 transitions. [2024-01-31 16:07:35,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 697 transitions, 22831 flow [2024-01-31 16:07:36,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 697 transitions, 22393 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-01-31 16:07:36,990 INFO L231 Difference]: Finished difference. Result has 351 places, 635 transitions, 20130 flow [2024-01-31 16:07:36,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=20454, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=656, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=526, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=20130, PETRI_PLACES=351, PETRI_TRANSITIONS=635} [2024-01-31 16:07:36,991 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 274 predicate places. [2024-01-31 16:07:36,991 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 635 transitions, 20130 flow [2024-01-31 16:07:36,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:36,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:36,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:07:36,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-01-31 16:07:36,992 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:07:36,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:36,992 INFO L85 PathProgramCache]: Analyzing trace with hash -856199601, now seen corresponding path program 4 times [2024-01-31 16:07:36,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:36,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156698810] [2024-01-31 16:07:36,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:36,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:36,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:37,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:37,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:37,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156698810] [2024-01-31 16:07:37,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156698810] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:37,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:37,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:07:37,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538139478] [2024-01-31 16:07:37,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:37,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:07:37,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:37,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:07:37,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:07:37,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:07:37,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 635 transitions, 20130 flow. Second operand has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:37,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:37,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:07:37,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:38,811 INFO L124 PetriNetUnfolderBase]: 2647/5496 cut-off events. [2024-01-31 16:07:38,811 INFO L125 PetriNetUnfolderBase]: For 385983/386612 co-relation queries the response was YES. [2024-01-31 16:07:38,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63638 conditions, 5496 events. 2647/5496 cut-off events. For 385983/386612 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 43184 event pairs, 697 based on Foata normal form. 35/5340 useless extension candidates. Maximal degree in co-relation 63501. Up to 2469 conditions per place. [2024-01-31 16:07:38,886 INFO L140 encePairwiseOnDemand]: 60/73 looper letters, 456 selfloop transitions, 148 changer transitions 20/667 dead transitions. [2024-01-31 16:07:38,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 667 transitions, 21821 flow [2024-01-31 16:07:38,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:07:38,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:07:38,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 227 transitions. [2024-01-31 16:07:38,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44422700587084146 [2024-01-31 16:07:38,888 INFO L175 Difference]: Start difference. First operand has 351 places, 635 transitions, 20130 flow. Second operand 7 states and 227 transitions. [2024-01-31 16:07:38,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 667 transitions, 21821 flow [2024-01-31 16:07:39,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 667 transitions, 21697 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-01-31 16:07:39,874 INFO L231 Difference]: Finished difference. Result has 354 places, 619 transitions, 19981 flow [2024-01-31 16:07:39,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=20006, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=635, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=19981, PETRI_PLACES=354, PETRI_TRANSITIONS=619} [2024-01-31 16:07:39,875 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 277 predicate places. [2024-01-31 16:07:39,875 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 619 transitions, 19981 flow [2024-01-31 16:07:39,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:39,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:39,875 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, 1, 1] [2024-01-31 16:07:39,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-01-31 16:07:39,875 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:07:39,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:39,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1605977557, now seen corresponding path program 5 times [2024-01-31 16:07:39,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:39,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788812446] [2024-01-31 16:07:39,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:39,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:39,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:40,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:40,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:40,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788812446] [2024-01-31 16:07:40,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788812446] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:40,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:40,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:07:40,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182745674] [2024-01-31 16:07:40,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:40,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:07:40,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:40,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:07:40,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:07:40,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:07:40,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 619 transitions, 19981 flow. Second operand has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:40,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:40,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:07:40,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:41,756 INFO L124 PetriNetUnfolderBase]: 2618/5499 cut-off events. [2024-01-31 16:07:41,756 INFO L125 PetriNetUnfolderBase]: For 397120/397794 co-relation queries the response was YES. [2024-01-31 16:07:41,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64817 conditions, 5499 events. 2618/5499 cut-off events. For 397120/397794 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 43638 event pairs, 631 based on Foata normal form. 52/5388 useless extension candidates. Maximal degree in co-relation 64678. Up to 2211 conditions per place. [2024-01-31 16:07:41,827 INFO L140 encePairwiseOnDemand]: 59/73 looper letters, 457 selfloop transitions, 164 changer transitions 6/670 dead transitions. [2024-01-31 16:07:41,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 670 transitions, 22119 flow [2024-01-31 16:07:41,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:07:41,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:07:41,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 263 transitions. [2024-01-31 16:07:41,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4503424657534247 [2024-01-31 16:07:41,828 INFO L175 Difference]: Start difference. First operand has 354 places, 619 transitions, 19981 flow. Second operand 8 states and 263 transitions. [2024-01-31 16:07:41,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 670 transitions, 22119 flow [2024-01-31 16:07:42,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 670 transitions, 21342 flow, removed 32 selfloop flow, removed 12 redundant places. [2024-01-31 16:07:42,904 INFO L231 Difference]: Finished difference. Result has 351 places, 616 transitions, 19567 flow [2024-01-31 16:07:42,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=19221, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=618, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=19567, PETRI_PLACES=351, PETRI_TRANSITIONS=616} [2024-01-31 16:07:42,905 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 274 predicate places. [2024-01-31 16:07:42,905 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 616 transitions, 19567 flow [2024-01-31 16:07:42,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:42,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:42,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:07:42,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-01-31 16:07:42,905 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:07:42,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:42,906 INFO L85 PathProgramCache]: Analyzing trace with hash 292773103, now seen corresponding path program 6 times [2024-01-31 16:07:42,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:42,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735270128] [2024-01-31 16:07:42,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:42,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:42,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:43,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:43,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:43,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735270128] [2024-01-31 16:07:43,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735270128] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:43,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:43,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:07:43,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56325580] [2024-01-31 16:07:43,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:43,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:07:43,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:43,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:07:43,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:07:43,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:07:43,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 616 transitions, 19567 flow. Second operand has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:43,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:43,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:07:43,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:44,807 INFO L124 PetriNetUnfolderBase]: 2591/5452 cut-off events. [2024-01-31 16:07:44,807 INFO L125 PetriNetUnfolderBase]: For 381437/382098 co-relation queries the response was YES. [2024-01-31 16:07:44,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63211 conditions, 5452 events. 2591/5452 cut-off events. For 381437/382098 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 43285 event pairs, 613 based on Foata normal form. 42/5328 useless extension candidates. Maximal degree in co-relation 63076. Up to 2238 conditions per place. [2024-01-31 16:07:44,878 INFO L140 encePairwiseOnDemand]: 59/73 looper letters, 446 selfloop transitions, 170 changer transitions 6/665 dead transitions. [2024-01-31 16:07:44,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 665 transitions, 21638 flow [2024-01-31 16:07:44,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:07:44,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:07:44,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 262 transitions. [2024-01-31 16:07:44,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486301369863014 [2024-01-31 16:07:44,879 INFO L175 Difference]: Start difference. First operand has 351 places, 616 transitions, 19567 flow. Second operand 8 states and 262 transitions. [2024-01-31 16:07:44,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 665 transitions, 21638 flow [2024-01-31 16:07:45,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 665 transitions, 21273 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-01-31 16:07:45,853 INFO L231 Difference]: Finished difference. Result has 350 places, 610 transitions, 19507 flow [2024-01-31 16:07:45,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=19198, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=615, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=19507, PETRI_PLACES=350, PETRI_TRANSITIONS=610} [2024-01-31 16:07:45,854 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 273 predicate places. [2024-01-31 16:07:45,854 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 610 transitions, 19507 flow [2024-01-31 16:07:45,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:45,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:45,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:07:45,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-01-31 16:07:45,854 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:07:45,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:45,854 INFO L85 PathProgramCache]: Analyzing trace with hash -2079249229, now seen corresponding path program 7 times [2024-01-31 16:07:45,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:45,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127954970] [2024-01-31 16:07:45,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:45,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:45,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:46,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:46,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:46,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127954970] [2024-01-31 16:07:46,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127954970] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:46,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:46,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:07:46,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844576414] [2024-01-31 16:07:46,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:46,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:07:46,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:46,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:07:46,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:07:46,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:07:46,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 610 transitions, 19507 flow. Second operand has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:46,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:46,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:07:46,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:47,718 INFO L124 PetriNetUnfolderBase]: 2576/5423 cut-off events. [2024-01-31 16:07:47,719 INFO L125 PetriNetUnfolderBase]: For 379076/379767 co-relation queries the response was YES. [2024-01-31 16:07:47,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62792 conditions, 5423 events. 2576/5423 cut-off events. For 379076/379767 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 42931 event pairs, 620 based on Foata normal form. 32/5292 useless extension candidates. Maximal degree in co-relation 62658. Up to 2211 conditions per place. [2024-01-31 16:07:47,784 INFO L140 encePairwiseOnDemand]: 60/73 looper letters, 401 selfloop transitions, 169 changer transitions 33/646 dead transitions. [2024-01-31 16:07:47,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 646 transitions, 21184 flow [2024-01-31 16:07:47,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:07:47,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:07:47,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 256 transitions. [2024-01-31 16:07:47,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4383561643835616 [2024-01-31 16:07:47,785 INFO L175 Difference]: Start difference. First operand has 350 places, 610 transitions, 19507 flow. Second operand 8 states and 256 transitions. [2024-01-31 16:07:47,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 646 transitions, 21184 flow [2024-01-31 16:07:48,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 646 transitions, 20335 flow, removed 0 selfloop flow, removed 22 redundant places. [2024-01-31 16:07:48,706 INFO L231 Difference]: Finished difference. Result has 333 places, 575 transitions, 18117 flow [2024-01-31 16:07:48,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=18578, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=608, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=18117, PETRI_PLACES=333, PETRI_TRANSITIONS=575} [2024-01-31 16:07:48,707 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 256 predicate places. [2024-01-31 16:07:48,707 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 575 transitions, 18117 flow [2024-01-31 16:07:48,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:48,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:48,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:07:48,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-01-31 16:07:48,708 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:07:48,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:48,708 INFO L85 PathProgramCache]: Analyzing trace with hash 602955915, now seen corresponding path program 1 times [2024-01-31 16:07:48,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:48,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271481958] [2024-01-31 16:07:48,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:48,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:48,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:48,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:48,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:48,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271481958] [2024-01-31 16:07:48,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271481958] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:48,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:48,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:07:48,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297662485] [2024-01-31 16:07:48,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:48,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:07:48,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:48,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:07:48,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:07:48,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:07:48,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 575 transitions, 18117 flow. Second operand has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:48,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:48,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:07:48,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:50,492 INFO L124 PetriNetUnfolderBase]: 2584/5349 cut-off events. [2024-01-31 16:07:50,492 INFO L125 PetriNetUnfolderBase]: For 354636/355628 co-relation queries the response was YES. [2024-01-31 16:07:50,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60984 conditions, 5349 events. 2584/5349 cut-off events. For 354636/355628 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 41149 event pairs, 581 based on Foata normal form. 29/5212 useless extension candidates. Maximal degree in co-relation 60866. Up to 2503 conditions per place. [2024-01-31 16:07:50,556 INFO L140 encePairwiseOnDemand]: 60/73 looper letters, 433 selfloop transitions, 147 changer transitions 13/636 dead transitions. [2024-01-31 16:07:50,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 636 transitions, 20231 flow [2024-01-31 16:07:50,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:07:50,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:07:50,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 262 transitions. [2024-01-31 16:07:50,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486301369863014 [2024-01-31 16:07:50,557 INFO L175 Difference]: Start difference. First operand has 333 places, 575 transitions, 18117 flow. Second operand 8 states and 262 transitions. [2024-01-31 16:07:50,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 636 transitions, 20231 flow [2024-01-31 16:07:51,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 636 transitions, 19542 flow, removed 10 selfloop flow, removed 13 redundant places. [2024-01-31 16:07:51,440 INFO L231 Difference]: Finished difference. Result has 329 places, 569 transitions, 17664 flow [2024-01-31 16:07:51,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=17446, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=575, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17664, PETRI_PLACES=329, PETRI_TRANSITIONS=569} [2024-01-31 16:07:51,441 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 252 predicate places. [2024-01-31 16:07:51,441 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 569 transitions, 17664 flow [2024-01-31 16:07:51,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:51,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:51,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:07:51,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-01-31 16:07:51,442 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:07:51,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:51,442 INFO L85 PathProgramCache]: Analyzing trace with hash -764280853, now seen corresponding path program 2 times [2024-01-31 16:07:51,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:51,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713453285] [2024-01-31 16:07:51,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:51,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:51,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:51,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:51,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:51,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713453285] [2024-01-31 16:07:51,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713453285] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:51,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:51,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:07:51,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793016530] [2024-01-31 16:07:51,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:51,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:07:51,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:51,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:07:51,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:07:51,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:07:51,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 569 transitions, 17664 flow. Second operand has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:51,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:51,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:07:51,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:53,112 INFO L124 PetriNetUnfolderBase]: 2512/5220 cut-off events. [2024-01-31 16:07:53,112 INFO L125 PetriNetUnfolderBase]: For 337171/337951 co-relation queries the response was YES. [2024-01-31 16:07:53,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58188 conditions, 5220 events. 2512/5220 cut-off events. For 337171/337951 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 40107 event pairs, 568 based on Foata normal form. 27/5076 useless extension candidates. Maximal degree in co-relation 58071. Up to 2184 conditions per place. [2024-01-31 16:07:53,176 INFO L140 encePairwiseOnDemand]: 60/73 looper letters, 406 selfloop transitions, 145 changer transitions 25/617 dead transitions. [2024-01-31 16:07:53,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 617 transitions, 19452 flow [2024-01-31 16:07:53,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:07:53,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:07:53,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 258 transitions. [2024-01-31 16:07:53,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4417808219178082 [2024-01-31 16:07:53,177 INFO L175 Difference]: Start difference. First operand has 329 places, 569 transitions, 17664 flow. Second operand 8 states and 258 transitions. [2024-01-31 16:07:53,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 617 transitions, 19452 flow [2024-01-31 16:07:53,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 617 transitions, 19191 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-01-31 16:07:53,994 INFO L231 Difference]: Finished difference. Result has 331 places, 545 transitions, 17109 flow [2024-01-31 16:07:53,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=17403, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=569, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=17109, PETRI_PLACES=331, PETRI_TRANSITIONS=545} [2024-01-31 16:07:53,995 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 254 predicate places. [2024-01-31 16:07:53,995 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 545 transitions, 17109 flow [2024-01-31 16:07:53,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:53,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:53,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:07:53,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-01-31 16:07:53,995 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:07:53,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:53,995 INFO L85 PathProgramCache]: Analyzing trace with hash -997064799, now seen corresponding path program 3 times [2024-01-31 16:07:53,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:53,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222537017] [2024-01-31 16:07:53,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:53,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:54,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:54,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:54,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:54,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222537017] [2024-01-31 16:07:54,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222537017] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:54,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:54,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:07:54,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209249211] [2024-01-31 16:07:54,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:54,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:07:54,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:54,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:07:54,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:07:54,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:07:54,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 545 transitions, 17109 flow. Second operand has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:54,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:54,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:07:54,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:55,672 INFO L124 PetriNetUnfolderBase]: 2413/5061 cut-off events. [2024-01-31 16:07:55,672 INFO L125 PetriNetUnfolderBase]: For 328703/329482 co-relation queries the response was YES. [2024-01-31 16:07:55,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56358 conditions, 5061 events. 2413/5061 cut-off events. For 328703/329482 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 38853 event pairs, 579 based on Foata normal form. 33/4942 useless extension candidates. Maximal degree in co-relation 56241. Up to 2458 conditions per place. [2024-01-31 16:07:55,732 INFO L140 encePairwiseOnDemand]: 60/73 looper letters, 351 selfloop transitions, 131 changer transitions 66/587 dead transitions. [2024-01-31 16:07:55,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 587 transitions, 18703 flow [2024-01-31 16:07:55,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:07:55,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:07:55,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 259 transitions. [2024-01-31 16:07:55,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4434931506849315 [2024-01-31 16:07:55,733 INFO L175 Difference]: Start difference. First operand has 331 places, 545 transitions, 17109 flow. Second operand 8 states and 259 transitions. [2024-01-31 16:07:55,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 587 transitions, 18703 flow [2024-01-31 16:07:56,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 587 transitions, 18232 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-01-31 16:07:56,544 INFO L231 Difference]: Finished difference. Result has 330 places, 479 transitions, 15223 flow [2024-01-31 16:07:56,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=16638, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15223, PETRI_PLACES=330, PETRI_TRANSITIONS=479} [2024-01-31 16:07:56,545 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 253 predicate places. [2024-01-31 16:07:56,545 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 479 transitions, 15223 flow [2024-01-31 16:07:56,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:56,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:56,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:07:56,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-01-31 16:07:56,545 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:07:56,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:56,545 INFO L85 PathProgramCache]: Analyzing trace with hash -641235985, now seen corresponding path program 4 times [2024-01-31 16:07:56,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:56,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999602159] [2024-01-31 16:07:56,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:56,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:56,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:56,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:56,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:56,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999602159] [2024-01-31 16:07:56,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999602159] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:56,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:56,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:07:56,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595364337] [2024-01-31 16:07:56,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:56,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:07:56,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:56,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:07:56,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:07:56,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:07:56,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 479 transitions, 15223 flow. Second operand has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:56,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:56,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:07:56,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:07:58,017 INFO L124 PetriNetUnfolderBase]: 2237/4696 cut-off events. [2024-01-31 16:07:58,018 INFO L125 PetriNetUnfolderBase]: For 304844/305570 co-relation queries the response was YES. [2024-01-31 16:07:58,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51842 conditions, 4696 events. 2237/4696 cut-off events. For 304844/305570 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 35598 event pairs, 543 based on Foata normal form. 38/4586 useless extension candidates. Maximal degree in co-relation 51726. Up to 1797 conditions per place. [2024-01-31 16:07:58,076 INFO L140 encePairwiseOnDemand]: 60/73 looper letters, 288 selfloop transitions, 169 changer transitions 27/520 dead transitions. [2024-01-31 16:07:58,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 520 transitions, 16637 flow [2024-01-31 16:07:58,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:07:58,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:07:58,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 264 transitions. [2024-01-31 16:07:58,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520547945205479 [2024-01-31 16:07:58,077 INFO L175 Difference]: Start difference. First operand has 330 places, 479 transitions, 15223 flow. Second operand 8 states and 264 transitions. [2024-01-31 16:07:58,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 520 transitions, 16637 flow [2024-01-31 16:07:58,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 520 transitions, 16108 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-01-31 16:07:58,791 INFO L231 Difference]: Finished difference. Result has 326 places, 453 transitions, 14414 flow [2024-01-31 16:07:58,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=14696, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14414, PETRI_PLACES=326, PETRI_TRANSITIONS=453} [2024-01-31 16:07:58,791 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 249 predicate places. [2024-01-31 16:07:58,791 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 453 transitions, 14414 flow [2024-01-31 16:07:58,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:58,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:07:58,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:07:58,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-01-31 16:07:58,792 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:07:58,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:07:58,792 INFO L85 PathProgramCache]: Analyzing trace with hash -2143015321, now seen corresponding path program 5 times [2024-01-31 16:07:58,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:07:58,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364289719] [2024-01-31 16:07:58,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:07:58,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:07:58,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:07:58,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:07:58,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:07:58,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364289719] [2024-01-31 16:07:58,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364289719] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:07:58,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:07:58,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:07:58,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968087526] [2024-01-31 16:07:58,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:07:58,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:07:58,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:07:58,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:07:58,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:07:58,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:07:58,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 453 transitions, 14414 flow. Second operand has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:07:58,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:07:58,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:07:58,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:08:00,202 INFO L124 PetriNetUnfolderBase]: 2060/4383 cut-off events. [2024-01-31 16:08:00,202 INFO L125 PetriNetUnfolderBase]: For 276776/277488 co-relation queries the response was YES. [2024-01-31 16:08:00,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48223 conditions, 4383 events. 2060/4383 cut-off events. For 276776/277488 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 32966 event pairs, 498 based on Foata normal form. 35/4287 useless extension candidates. Maximal degree in co-relation 48109. Up to 1797 conditions per place. [2024-01-31 16:08:00,254 INFO L140 encePairwiseOnDemand]: 60/73 looper letters, 295 selfloop transitions, 134 changer transitions 32/495 dead transitions. [2024-01-31 16:08:00,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 495 transitions, 15809 flow [2024-01-31 16:08:00,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:08:00,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:08:00,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 263 transitions. [2024-01-31 16:08:00,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4503424657534247 [2024-01-31 16:08:00,255 INFO L175 Difference]: Start difference. First operand has 326 places, 453 transitions, 14414 flow. Second operand 8 states and 263 transitions. [2024-01-31 16:08:00,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 495 transitions, 15809 flow [2024-01-31 16:08:00,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 495 transitions, 15208 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-01-31 16:08:00,898 INFO L231 Difference]: Finished difference. Result has 323 places, 421 transitions, 13252 flow [2024-01-31 16:08:00,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=13813, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=13252, PETRI_PLACES=323, PETRI_TRANSITIONS=421} [2024-01-31 16:08:00,898 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 246 predicate places. [2024-01-31 16:08:00,898 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 421 transitions, 13252 flow [2024-01-31 16:08:00,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:08:00,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:08:00,899 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:08:00,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-01-31 16:08:00,899 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:08:00,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:08:00,899 INFO L85 PathProgramCache]: Analyzing trace with hash -843618969, now seen corresponding path program 6 times [2024-01-31 16:08:00,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:08:00,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052882848] [2024-01-31 16:08:00,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:08:00,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:08:00,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:08:01,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:08:01,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:08:01,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052882848] [2024-01-31 16:08:01,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052882848] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:08:01,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:08:01,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:08:01,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250045552] [2024-01-31 16:08:01,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:08:01,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:08:01,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:08:01,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:08:01,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:08:01,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:08:01,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 421 transitions, 13252 flow. Second operand has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:08:01,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:08:01,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:08:01,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:08:02,196 INFO L124 PetriNetUnfolderBase]: 1978/4287 cut-off events. [2024-01-31 16:08:02,196 INFO L125 PetriNetUnfolderBase]: For 246386/247056 co-relation queries the response was YES. [2024-01-31 16:08:02,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46295 conditions, 4287 events. 1978/4287 cut-off events. For 246386/247056 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 32506 event pairs, 532 based on Foata normal form. 31/4192 useless extension candidates. Maximal degree in co-relation 46182. Up to 2301 conditions per place. [2024-01-31 16:08:02,244 INFO L140 encePairwiseOnDemand]: 60/73 looper letters, 294 selfloop transitions, 90 changer transitions 44/462 dead transitions. [2024-01-31 16:08:02,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 462 transitions, 14596 flow [2024-01-31 16:08:02,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-31 16:08:02,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-31 16:08:02,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 252 transitions. [2024-01-31 16:08:02,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4315068493150685 [2024-01-31 16:08:02,245 INFO L175 Difference]: Start difference. First operand has 323 places, 421 transitions, 13252 flow. Second operand 8 states and 252 transitions. [2024-01-31 16:08:02,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 462 transitions, 14596 flow [2024-01-31 16:08:02,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 462 transitions, 14061 flow, removed 3 selfloop flow, removed 15 redundant places. [2024-01-31 16:08:02,811 INFO L231 Difference]: Finished difference. Result has 316 places, 379 transitions, 11905 flow [2024-01-31 16:08:02,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=12717, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11905, PETRI_PLACES=316, PETRI_TRANSITIONS=379} [2024-01-31 16:08:02,811 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 239 predicate places. [2024-01-31 16:08:02,811 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 379 transitions, 11905 flow [2024-01-31 16:08:02,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:08:02,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:08:02,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:08:02,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-01-31 16:08:02,812 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:08:02,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:08:02,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1173414065, now seen corresponding path program 7 times [2024-01-31 16:08:02,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:08:02,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274731295] [2024-01-31 16:08:02,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:08:02,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:08:02,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:08:02,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:08:02,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:08:02,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274731295] [2024-01-31 16:08:02,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274731295] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:08:02,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:08:02,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-01-31 16:08:02,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195739959] [2024-01-31 16:08:02,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:08:02,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-31 16:08:02,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:08:02,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-31 16:08:02,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-01-31 16:08:03,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 73 [2024-01-31 16:08:03,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 379 transitions, 11905 flow. Second operand has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:08:03,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:08:03,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 73 [2024-01-31 16:08:03,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:08:03,987 INFO L124 PetriNetUnfolderBase]: 1902/4041 cut-off events. [2024-01-31 16:08:03,987 INFO L125 PetriNetUnfolderBase]: For 222613/223126 co-relation queries the response was YES. [2024-01-31 16:08:04,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42993 conditions, 4041 events. 1902/4041 cut-off events. For 222613/223126 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 29702 event pairs, 564 based on Foata normal form. 19/3917 useless extension candidates. Maximal degree in co-relation 42882. Up to 1838 conditions per place. [2024-01-31 16:08:04,035 INFO L140 encePairwiseOnDemand]: 60/73 looper letters, 245 selfloop transitions, 101 changer transitions 25/404 dead transitions. [2024-01-31 16:08:04,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 404 transitions, 12885 flow [2024-01-31 16:08:04,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-31 16:08:04,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-31 16:08:04,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 220 transitions. [2024-01-31 16:08:04,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43052837573385516 [2024-01-31 16:08:04,036 INFO L175 Difference]: Start difference. First operand has 316 places, 379 transitions, 11905 flow. Second operand 7 states and 220 transitions. [2024-01-31 16:08:04,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 404 transitions, 12885 flow [2024-01-31 16:08:04,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 404 transitions, 12135 flow, removed 2 selfloop flow, removed 27 redundant places. [2024-01-31 16:08:04,560 INFO L231 Difference]: Finished difference. Result has 293 places, 352 transitions, 10796 flow [2024-01-31 16:08:04,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=11095, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10796, PETRI_PLACES=293, PETRI_TRANSITIONS=352} [2024-01-31 16:08:04,560 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 216 predicate places. [2024-01-31 16:08:04,560 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 352 transitions, 10796 flow [2024-01-31 16:08:04,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.25) internal successors, (186), 8 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 16:08:04,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:08:04,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:08:04,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-01-31 16:08:04,561 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 57 more)] === [2024-01-31 16:08:04,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:08:04,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1317498382, now seen corresponding path program 1 times [2024-01-31 16:08:04,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:08:04,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685930196] [2024-01-31 16:08:04,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:08:04,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:08:04,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:08:04,584 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-31 16:08:04,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:08:04,612 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-31 16:08:04,613 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-31 16:08:04,613 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (59 of 60 remaining) [2024-01-31 16:08:04,615 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT (58 of 60 remaining) [2024-01-31 16:08:04,615 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT (57 of 60 remaining) [2024-01-31 16:08:04,615 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (56 of 60 remaining) [2024-01-31 16:08:04,615 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err3ASSERT_VIOLATIONWITNESS_INVARIANT (55 of 60 remaining) [2024-01-31 16:08:04,615 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT (54 of 60 remaining) [2024-01-31 16:08:04,615 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err5ASSERT_VIOLATIONWITNESS_INVARIANT (53 of 60 remaining) [2024-01-31 16:08:04,615 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err6ASSERT_VIOLATIONWITNESS_INVARIANT (52 of 60 remaining) [2024-01-31 16:08:04,616 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT (51 of 60 remaining) [2024-01-31 16:08:04,616 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err8ASSERT_VIOLATIONWITNESS_INVARIANT (50 of 60 remaining) [2024-01-31 16:08:04,616 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT (49 of 60 remaining) [2024-01-31 16:08:04,616 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err10ASSERT_VIOLATIONWITNESS_INVARIANT (48 of 60 remaining) [2024-01-31 16:08:04,616 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err11ASSERT_VIOLATIONWITNESS_INVARIANT (47 of 60 remaining) [2024-01-31 16:08:04,616 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (46 of 60 remaining) [2024-01-31 16:08:04,616 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (45 of 60 remaining) [2024-01-31 16:08:04,616 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (44 of 60 remaining) [2024-01-31 16:08:04,616 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (43 of 60 remaining) [2024-01-31 16:08:04,617 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (42 of 60 remaining) [2024-01-31 16:08:04,617 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (41 of 60 remaining) [2024-01-31 16:08:04,617 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (40 of 60 remaining) [2024-01-31 16:08:04,617 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (39 of 60 remaining) [2024-01-31 16:08:04,617 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 60 remaining) [2024-01-31 16:08:04,617 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 60 remaining) [2024-01-31 16:08:04,617 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 60 remaining) [2024-01-31 16:08:04,617 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 60 remaining) [2024-01-31 16:08:04,617 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 60 remaining) [2024-01-31 16:08:04,617 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 60 remaining) [2024-01-31 16:08:04,618 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 60 remaining) [2024-01-31 16:08:04,618 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 60 remaining) [2024-01-31 16:08:04,618 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 60 remaining) [2024-01-31 16:08:04,618 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 60 remaining) [2024-01-31 16:08:04,618 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 60 remaining) [2024-01-31 16:08:04,618 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 60 remaining) [2024-01-31 16:08:04,618 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (26 of 60 remaining) [2024-01-31 16:08:04,618 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 60 remaining) [2024-01-31 16:08:04,618 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 60 remaining) [2024-01-31 16:08:04,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 60 remaining) [2024-01-31 16:08:04,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 60 remaining) [2024-01-31 16:08:04,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 60 remaining) [2024-01-31 16:08:04,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err3ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 60 remaining) [2024-01-31 16:08:04,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err4ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 60 remaining) [2024-01-31 16:08:04,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err5ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 60 remaining) [2024-01-31 16:08:04,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err6ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 60 remaining) [2024-01-31 16:08:04,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err7ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 60 remaining) [2024-01-31 16:08:04,619 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err8ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 60 remaining) [2024-01-31 16:08:04,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err9ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 60 remaining) [2024-01-31 16:08:04,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err10ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 60 remaining) [2024-01-31 16:08:04,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err11ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 60 remaining) [2024-01-31 16:08:04,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 60 remaining) [2024-01-31 16:08:04,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 60 remaining) [2024-01-31 16:08:04,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 60 remaining) [2024-01-31 16:08:04,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 60 remaining) [2024-01-31 16:08:04,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 60 remaining) [2024-01-31 16:08:04,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 60 remaining) [2024-01-31 16:08:04,621 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 60 remaining) [2024-01-31 16:08:04,621 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 60 remaining) [2024-01-31 16:08:04,621 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 60 remaining) [2024-01-31 16:08:04,621 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 60 remaining) [2024-01-31 16:08:04,621 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 60 remaining) [2024-01-31 16:08:04,621 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 60 remaining) [2024-01-31 16:08:04,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-01-31 16:08:04,622 INFO L445 BasicCegarLoop]: Path program histogram: [7, 7, 7, 7, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:08:04,626 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-31 16:08:04,627 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-31 16:08:04,652 INFO L503 ceAbstractionStarter]: Automizer considered 33 witness invariants [2024-01-31 16:08:04,652 INFO L504 ceAbstractionStarter]: WitnessConsidered=33 [2024-01-31 16:08:04,653 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 04:08:04 BasicIcfg [2024-01-31 16:08:04,653 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-31 16:08:04,653 INFO L158 Benchmark]: Toolchain (without parser) took 232363.34ms. Allocated memory was 163.6MB in the beginning and 3.3GB in the end (delta: 3.1GB). Free memory was 131.3MB in the beginning and 1.9GB in the end (delta: -1.7GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. [2024-01-31 16:08:04,653 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 102.8MB. Free memory is still 64.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 16:08:04,654 INFO L158 Benchmark]: Witness Parser took 0.12ms. Allocated memory is still 163.6MB. Free memory is still 94.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-31 16:08:04,654 INFO L158 Benchmark]: CACSL2BoogieTranslator took 805.08ms. Allocated memory is still 163.6MB. Free memory was 131.3MB in the beginning and 75.1MB in the end (delta: 56.2MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. [2024-01-31 16:08:04,654 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.68ms. Allocated memory is still 163.6MB. Free memory was 75.1MB in the beginning and 72.5MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-31 16:08:04,654 INFO L158 Benchmark]: Boogie Preprocessor took 76.10ms. Allocated memory is still 163.6MB. Free memory was 72.5MB in the beginning and 69.9MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-01-31 16:08:04,654 INFO L158 Benchmark]: RCFGBuilder took 797.98ms. Allocated memory is still 163.6MB. Free memory was 69.9MB in the beginning and 86.7MB in the end (delta: -16.8MB). Peak memory consumption was 24.7MB. Max. memory is 16.1GB. [2024-01-31 16:08:04,654 INFO L158 Benchmark]: TraceAbstraction took 230611.69ms. Allocated memory was 163.6MB in the beginning and 3.3GB in the end (delta: 3.1GB). Free memory was 85.8MB in the beginning and 1.9GB in the end (delta: -1.8GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. [2024-01-31 16:08:04,655 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 102.8MB. Free memory is still 64.5MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.12ms. Allocated memory is still 163.6MB. Free memory is still 94.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 805.08ms. Allocated memory is still 163.6MB. Free memory was 131.3MB in the beginning and 75.1MB in the end (delta: 56.2MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 66.68ms. Allocated memory is still 163.6MB. Free memory was 75.1MB in the beginning and 72.5MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 76.10ms. Allocated memory is still 163.6MB. Free memory was 72.5MB in the beginning and 69.9MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 797.98ms. Allocated memory is still 163.6MB. Free memory was 69.9MB in the beginning and 86.7MB in the end (delta: -16.8MB). Peak memory consumption was 24.7MB. Max. memory is 16.1GB. * TraceAbstraction took 230611.69ms. Allocated memory was 163.6MB in the beginning and 3.3GB in the end (delta: 3.1GB). Free memory was 85.8MB in the beginning and 1.9GB in the end (delta: -1.8GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 767]: invariant of correctness witness can be violated invariant of correctness witness can be violated We found a FailurePath: [L708] 0 int __unbuffered_cnt = 0; [L709] 0 _Bool main$tmp_guard0; [L710] 0 _Bool main$tmp_guard1; [L712] 0 int x = 0; [L714] 0 int y = 0; [L756] 0 pthread_t t2485; VAL [__unbuffered_cnt=0, main$tmp_guard0=0, main$tmp_guard1=0, t2485={5:0}, x=0, y=0] [L757] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_cnt],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]]]]] [L757] FCALL, FORK 0 pthread_create(&t2485, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t2485={5:0}, x=0, y=0] [L758] 0 pthread_t t2486; [L717] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0] [L759] FCALL, FORK 0 pthread_create(&t2486, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t2485={5:0}, t2486={3:0}, x=0, y=0] [L718] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[127]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[2]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] [L718] 1 y = 2 [L719] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[127]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=2] [L732] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=2] [L720] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=2] [L733] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[127]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[2]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] [L733] 2 x = 2 [L734] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[2]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=2, y=2] [L735] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=2, y=2] [L721] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[127]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[2]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] [L721] 1 x = 1 [L722] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=2] [L723] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=2] [L724] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[127]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[2]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=2] [L725] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=2] [L736] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[127]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[2]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] [L736] 2 y = 1 [L737] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[127]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L738] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L739] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[127]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[2]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L740] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]]] VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L726] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[127]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[2]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] [L726] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L727] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IntegerLiteral[1],IdentifierExpression[__unbuffered_cnt]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[127]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[2]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L741] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[127]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[2]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] [L741] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L742] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IntegerLiteral[1],IdentifierExpression[__unbuffered_cnt]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[127]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,CastExpression[ACSLType[unsigned long],IdentifierExpression[arg]],IntegerLiteral[0UL]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[2]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=2, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L761] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[127]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$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$tmp_guard1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[2]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] [L761] 0 main$tmp_guard0 = __unbuffered_cnt == 2 [L762] 0 CodeAnnotStmt[Assertion[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[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[127]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],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[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[2]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=2, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t2485={5:0}, t2486={3:0}, x=1, y=1] [L763] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L763] RET 0 assume_abort_if_not(main$tmp_guard0) [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[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]]],BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[127]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],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[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[2]]]],BinaryExpression[LOGICOR,BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=2, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t2485={5:0}, t2486={3:0}, x=1, y=1] [L767] 0 CodeAnnotStmt[Assertion[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[y]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[127]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[2]]],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[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]]]] VAL [__unbuffered_cnt=2, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t2485={5:0}, t2486={3:0}, x=1, y=1] - UnprovableResult [Line: 717]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 718]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 719]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 720]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - 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: 732]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 733]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 734]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 735]: 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: 757]: 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: 762]: 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: 768]: 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: 759]: 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: 757]: 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: 230.5s, OverallIterations: 113, TraceHistogramMax: 1, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 213.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8887 SdHoareTripleChecker+Valid, 19.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8157 mSDsluCounter, 1352 SdHoareTripleChecker+Invalid, 15.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1154 mSDsCounter, 1420 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 22210 IncrementalHoareTripleChecker+Invalid, 23630 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1420 mSolverCounterUnsat, 198 mSDtfsCounter, 22210 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 634 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 551 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 4.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22015occurred in iteration=98, InterpolantAutomatonStates: 721, 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: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 15.2s InterpolantComputationTime, 2007 NumberOfCodeBlocks, 2007 NumberOfCodeBlocksAsserted, 113 NumberOfCheckSat, 1867 ConstructedInterpolants, 0 QuantifiedInterpolants, 36791 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 112 InterpolantComputations, 112 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-01-31 16:08:04,682 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